./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/20_lamport.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_f8c8ad45-3c86-4127-b034-b12207b32730/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_f8c8ad45-3c86-4127-b034-b12207b32730/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f8c8ad45-3c86-4127-b034-b12207b32730/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f8c8ad45-3c86-4127-b034-b12207b32730/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/20_lamport.i -s /tmp/vcloud-vcloud-master/worker/run_dir_f8c8ad45-3c86-4127-b034-b12207b32730/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f8c8ad45-3c86-4127-b034-b12207b32730/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4bd0a104431602f65d67040bef1f743648c257ee ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-19 23:36:12,899 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 23:36:12,901 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 23:36:12,915 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 23:36:12,916 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 23:36:12,917 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 23:36:12,919 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 23:36:12,927 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 23:36:12,931 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 23:36:12,935 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 23:36:12,936 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 23:36:12,937 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 23:36:12,937 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 23:36:12,939 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 23:36:12,940 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 23:36:12,941 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 23:36:12,942 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 23:36:12,943 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 23:36:12,945 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 23:36:12,948 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 23:36:12,952 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 23:36:12,954 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 23:36:12,957 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 23:36:12,957 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 23:36:12,959 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 23:36:12,960 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 23:36:12,960 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 23:36:12,961 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 23:36:12,962 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 23:36:12,963 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 23:36:12,963 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 23:36:12,963 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 23:36:12,964 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 23:36:12,965 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 23:36:12,966 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 23:36:12,966 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 23:36:12,966 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 23:36:12,967 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 23:36:12,967 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 23:36:12,968 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 23:36:12,969 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 23:36:12,969 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f8c8ad45-3c86-4127-b034-b12207b32730/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-19 23:36:12,993 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 23:36:13,003 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 23:36:13,004 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 23:36:13,004 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 23:36:13,004 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 23:36:13,005 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 23:36:13,005 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 23:36:13,005 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 23:36:13,005 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 23:36:13,005 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 23:36:13,006 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-19 23:36:13,006 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 23:36:13,007 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-19 23:36:13,007 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 23:36:13,007 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 23:36:13,008 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 23:36:13,008 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-19 23:36:13,008 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 23:36:13,008 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 23:36:13,008 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 23:36:13,009 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-19 23:36:13,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 23:36:13,009 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 23:36:13,009 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 23:36:13,010 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-19 23:36:13,010 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-19 23:36:13,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-19 23:36:13,010 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-19 23:36:13,010 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f8c8ad45-3c86-4127-b034-b12207b32730/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4bd0a104431602f65d67040bef1f743648c257ee [2019-11-19 23:36:13,162 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 23:36:13,173 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 23:36:13,176 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 23:36:13,177 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 23:36:13,177 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 23:36:13,178 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f8c8ad45-3c86-4127-b034-b12207b32730/bin/uautomizer/../../sv-benchmarks/c/pthread-ext/20_lamport.i [2019-11-19 23:36:13,242 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f8c8ad45-3c86-4127-b034-b12207b32730/bin/uautomizer/data/81f2f4ab9/6e50710d9c044f29a450e78ea1309ea7/FLAG6e7e7fb95 [2019-11-19 23:36:13,667 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 23:36:13,668 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f8c8ad45-3c86-4127-b034-b12207b32730/sv-benchmarks/c/pthread-ext/20_lamport.i [2019-11-19 23:36:13,681 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f8c8ad45-3c86-4127-b034-b12207b32730/bin/uautomizer/data/81f2f4ab9/6e50710d9c044f29a450e78ea1309ea7/FLAG6e7e7fb95 [2019-11-19 23:36:13,967 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f8c8ad45-3c86-4127-b034-b12207b32730/bin/uautomizer/data/81f2f4ab9/6e50710d9c044f29a450e78ea1309ea7 [2019-11-19 23:36:13,969 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 23:36:13,970 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 23:36:13,971 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 23:36:13,971 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 23:36:13,974 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 23:36:13,975 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:36:13" (1/1) ... [2019-11-19 23:36:13,977 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10dbc526 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:36:13, skipping insertion in model container [2019-11-19 23:36:13,977 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:36:13" (1/1) ... [2019-11-19 23:36:13,984 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 23:36:14,030 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 23:36:14,374 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 23:36:14,386 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 23:36:14,460 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 23:36:14,536 INFO L192 MainTranslator]: Completed translation [2019-11-19 23:36:14,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:36:14 WrapperNode [2019-11-19 23:36:14,537 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 23:36:14,538 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 23:36:14,538 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 23:36:14,538 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 23:36:14,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:36:14" (1/1) ... [2019-11-19 23:36:14,572 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:36:14" (1/1) ... [2019-11-19 23:36:14,596 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 23:36:14,597 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 23:36:14,597 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 23:36:14,597 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 23:36:14,606 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:36:14" (1/1) ... [2019-11-19 23:36:14,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:36:14" (1/1) ... [2019-11-19 23:36:14,622 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:36:14" (1/1) ... [2019-11-19 23:36:14,623 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:36:14" (1/1) ... [2019-11-19 23:36:14,629 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:36:14" (1/1) ... [2019-11-19 23:36:14,640 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:36:14" (1/1) ... [2019-11-19 23:36:14,646 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:36:14" (1/1) ... [2019-11-19 23:36:14,653 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 23:36:14,655 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 23:36:14,656 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 23:36:14,656 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 23:36:14,657 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:36:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f8c8ad45-3c86-4127-b034-b12207b32730/bin/uautomizer/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 [2019-11-19 23:36:14,722 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2019-11-19 23:36:14,722 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2019-11-19 23:36:14,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-19 23:36:14,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-19 23:36:14,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-19 23:36:14,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 23:36:14,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 23:36:14,725 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-19 23:36:15,072 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 23:36:15,072 INFO L285 CfgBuilder]: Removed 14 assume(true) statements. [2019-11-19 23:36:15,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:36:15 BoogieIcfgContainer [2019-11-19 23:36:15,073 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 23:36:15,075 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-19 23:36:15,077 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-19 23:36:15,078 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-19 23:36:15,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 11:36:13" (1/3) ... [2019-11-19 23:36:15,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e26c2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 11:36:15, skipping insertion in model container [2019-11-19 23:36:15,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:36:14" (2/3) ... [2019-11-19 23:36:15,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e26c2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 11:36:15, skipping insertion in model container [2019-11-19 23:36:15,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:36:15" (3/3) ... [2019-11-19 23:36:15,081 INFO L109 eAbstractionObserver]: Analyzing ICFG 20_lamport.i [2019-11-19 23:36:15,111 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 23:36:15,111 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 23:36:15,111 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 23:36:15,111 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 23:36:15,112 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 23:36:15,112 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 23:36:15,113 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 23:36:15,114 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 23:36:15,114 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 23:36:15,114 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 23:36:15,115 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 23:36:15,115 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 23:36:15,116 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 23:36:15,116 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 23:36:15,116 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 23:36:15,117 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 23:36:15,117 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 23:36:15,118 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 23:36:15,130 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-19 23:36:15,130 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-19 23:36:15,136 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2019-11-19 23:36:15,143 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-11-19 23:36:15,159 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-19 23:36:15,160 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-19 23:36:15,160 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-19 23:36:15,160 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 23:36:15,160 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 23:36:15,160 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-19 23:36:15,161 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 23:36:15,161 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-19 23:36:15,173 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 121 places, 161 transitions [2019-11-19 23:36:15,329 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 2290 states. [2019-11-19 23:36:15,331 INFO L276 IsEmpty]: Start isEmpty. Operand 2290 states. [2019-11-19 23:36:15,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-19 23:36:15,345 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:36:15,346 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:36:15,347 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 23:36:15,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:36:15,354 INFO L82 PathProgramCache]: Analyzing trace with hash -1617836640, now seen corresponding path program 1 times [2019-11-19 23:36:15,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:36:15,362 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977199460] [2019-11-19 23:36:15,362 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:36:15,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:36:15,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:36:15,493 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977199460] [2019-11-19 23:36:15,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:36:15,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-19 23:36:15,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308828190] [2019-11-19 23:36:15,498 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-19 23:36:15,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 23:36:15,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-19 23:36:15,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-19 23:36:15,514 INFO L87 Difference]: Start difference. First operand 2290 states. Second operand 2 states. [2019-11-19 23:36:15,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:36:15,574 INFO L93 Difference]: Finished difference Result 2290 states and 5409 transitions. [2019-11-19 23:36:15,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-19 23:36:15,576 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2019-11-19 23:36:15,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:36:15,619 INFO L225 Difference]: With dead ends: 2290 [2019-11-19 23:36:15,619 INFO L226 Difference]: Without dead ends: 2125 [2019-11-19 23:36:15,621 INFO L630 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 [2019-11-19 23:36:15,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2125 states. [2019-11-19 23:36:15,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2125 to 2125. [2019-11-19 23:36:15,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2125 states. [2019-11-19 23:36:15,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2125 states to 2125 states and 5079 transitions. [2019-11-19 23:36:15,819 INFO L78 Accepts]: Start accepts. Automaton has 2125 states and 5079 transitions. Word has length 18 [2019-11-19 23:36:15,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:36:15,819 INFO L462 AbstractCegarLoop]: Abstraction has 2125 states and 5079 transitions. [2019-11-19 23:36:15,819 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-19 23:36:15,820 INFO L276 IsEmpty]: Start isEmpty. Operand 2125 states and 5079 transitions. [2019-11-19 23:36:15,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-19 23:36:15,829 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:36:15,830 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:36:15,830 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 23:36:15,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:36:15,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1347863924, now seen corresponding path program 1 times [2019-11-19 23:36:15,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:36:15,831 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312300519] [2019-11-19 23:36:15,832 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:36:15,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:36:15,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:36:15,942 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312300519] [2019-11-19 23:36:15,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:36:15,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-19 23:36:15,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276676507] [2019-11-19 23:36:15,944 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-19 23:36:15,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 23:36:15,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 23:36:15,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 23:36:15,945 INFO L87 Difference]: Start difference. First operand 2125 states and 5079 transitions. Second operand 3 states. [2019-11-19 23:36:16,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:36:16,026 INFO L93 Difference]: Finished difference Result 2098 states and 4926 transitions. [2019-11-19 23:36:16,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 23:36:16,028 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2019-11-19 23:36:16,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:36:16,041 INFO L225 Difference]: With dead ends: 2098 [2019-11-19 23:36:16,041 INFO L226 Difference]: Without dead ends: 1570 [2019-11-19 23:36:16,042 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 23:36:16,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1570 states. [2019-11-19 23:36:16,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1570 to 1525. [2019-11-19 23:36:16,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1525 states. [2019-11-19 23:36:16,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 3642 transitions. [2019-11-19 23:36:16,095 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 3642 transitions. Word has length 24 [2019-11-19 23:36:16,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:36:16,096 INFO L462 AbstractCegarLoop]: Abstraction has 1525 states and 3642 transitions. [2019-11-19 23:36:16,098 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-19 23:36:16,099 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 3642 transitions. [2019-11-19 23:36:16,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-19 23:36:16,102 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:36:16,102 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:36:16,102 INFO L410 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 23:36:16,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:36:16,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1067144065, now seen corresponding path program 1 times [2019-11-19 23:36:16,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:36:16,104 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045735709] [2019-11-19 23:36:16,104 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:36:16,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:36:16,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:36:16,169 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045735709] [2019-11-19 23:36:16,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:36:16,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-19 23:36:16,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202402820] [2019-11-19 23:36:16,171 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-19 23:36:16,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 23:36:16,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 23:36:16,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 23:36:16,171 INFO L87 Difference]: Start difference. First operand 1525 states and 3642 transitions. Second operand 3 states. [2019-11-19 23:36:16,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:36:16,223 INFO L93 Difference]: Finished difference Result 1432 states and 3399 transitions. [2019-11-19 23:36:16,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 23:36:16,224 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2019-11-19 23:36:16,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:36:16,233 INFO L225 Difference]: With dead ends: 1432 [2019-11-19 23:36:16,233 INFO L226 Difference]: Without dead ends: 1132 [2019-11-19 23:36:16,236 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 23:36:16,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2019-11-19 23:36:16,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 1132. [2019-11-19 23:36:16,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1132 states. [2019-11-19 23:36:16,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1132 states to 1132 states and 2727 transitions. [2019-11-19 23:36:16,277 INFO L78 Accepts]: Start accepts. Automaton has 1132 states and 2727 transitions. Word has length 28 [2019-11-19 23:36:16,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:36:16,278 INFO L462 AbstractCegarLoop]: Abstraction has 1132 states and 2727 transitions. [2019-11-19 23:36:16,278 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-19 23:36:16,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1132 states and 2727 transitions. [2019-11-19 23:36:16,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-19 23:36:16,283 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:36:16,283 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:36:16,284 INFO L410 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 23:36:16,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:36:16,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1947423709, now seen corresponding path program 1 times [2019-11-19 23:36:16,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:36:16,285 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200138998] [2019-11-19 23:36:16,285 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:36:16,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:36:16,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:36:16,369 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200138998] [2019-11-19 23:36:16,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:36:16,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-19 23:36:16,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143798243] [2019-11-19 23:36:16,370 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-19 23:36:16,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 23:36:16,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 23:36:16,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 23:36:16,371 INFO L87 Difference]: Start difference. First operand 1132 states and 2727 transitions. Second operand 3 states. [2019-11-19 23:36:16,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:36:16,501 INFO L93 Difference]: Finished difference Result 1459 states and 3474 transitions. [2019-11-19 23:36:16,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 23:36:16,501 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2019-11-19 23:36:16,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:36:16,510 INFO L225 Difference]: With dead ends: 1459 [2019-11-19 23:36:16,510 INFO L226 Difference]: Without dead ends: 1198 [2019-11-19 23:36:16,511 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 23:36:16,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1198 states. [2019-11-19 23:36:16,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1198 to 1147. [2019-11-19 23:36:16,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1147 states. [2019-11-19 23:36:16,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 2685 transitions. [2019-11-19 23:36:16,552 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 2685 transitions. Word has length 37 [2019-11-19 23:36:16,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:36:16,553 INFO L462 AbstractCegarLoop]: Abstraction has 1147 states and 2685 transitions. [2019-11-19 23:36:16,553 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-19 23:36:16,553 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 2685 transitions. [2019-11-19 23:36:16,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-19 23:36:16,556 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:36:16,556 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:36:16,557 INFO L410 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 23:36:16,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:36:16,557 INFO L82 PathProgramCache]: Analyzing trace with hash 28888026, now seen corresponding path program 1 times [2019-11-19 23:36:16,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:36:16,558 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997830567] [2019-11-19 23:36:16,558 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:36:16,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:36:16,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:36:16,592 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997830567] [2019-11-19 23:36:16,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:36:16,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-19 23:36:16,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846025308] [2019-11-19 23:36:16,593 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-19 23:36:16,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 23:36:16,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 23:36:16,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 23:36:16,594 INFO L87 Difference]: Start difference. First operand 1147 states and 2685 transitions. Second operand 3 states. [2019-11-19 23:36:16,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:36:16,636 INFO L93 Difference]: Finished difference Result 1687 states and 3681 transitions. [2019-11-19 23:36:16,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 23:36:16,637 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2019-11-19 23:36:16,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:36:16,648 INFO L225 Difference]: With dead ends: 1687 [2019-11-19 23:36:16,649 INFO L226 Difference]: Without dead ends: 1687 [2019-11-19 23:36:16,649 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 23:36:16,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1687 states. [2019-11-19 23:36:16,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1687 to 1210. [2019-11-19 23:36:16,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2019-11-19 23:36:16,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 2769 transitions. [2019-11-19 23:36:16,695 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 2769 transitions. Word has length 37 [2019-11-19 23:36:16,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:36:16,696 INFO L462 AbstractCegarLoop]: Abstraction has 1210 states and 2769 transitions. [2019-11-19 23:36:16,696 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-19 23:36:16,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 2769 transitions. [2019-11-19 23:36:16,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-19 23:36:16,699 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:36:16,699 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:36:16,700 INFO L410 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 23:36:16,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:36:16,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1814822961, now seen corresponding path program 2 times [2019-11-19 23:36:16,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:36:16,701 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10329002] [2019-11-19 23:36:16,701 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:36:16,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:36:16,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:36:16,747 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10329002] [2019-11-19 23:36:16,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:36:16,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-19 23:36:16,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884549279] [2019-11-19 23:36:16,748 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-19 23:36:16,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 23:36:16,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-19 23:36:16,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-19 23:36:16,749 INFO L87 Difference]: Start difference. First operand 1210 states and 2769 transitions. Second operand 4 states. [2019-11-19 23:36:16,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:36:16,793 INFO L93 Difference]: Finished difference Result 1486 states and 3090 transitions. [2019-11-19 23:36:16,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 23:36:16,794 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2019-11-19 23:36:16,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:36:16,803 INFO L225 Difference]: With dead ends: 1486 [2019-11-19 23:36:16,804 INFO L226 Difference]: Without dead ends: 1477 [2019-11-19 23:36:16,810 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-19 23:36:16,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1477 states. [2019-11-19 23:36:16,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1477 to 1129. [2019-11-19 23:36:16,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1129 states. [2019-11-19 23:36:16,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1129 states to 1129 states and 2448 transitions. [2019-11-19 23:36:16,847 INFO L78 Accepts]: Start accepts. Automaton has 1129 states and 2448 transitions. Word has length 37 [2019-11-19 23:36:16,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:36:16,848 INFO L462 AbstractCegarLoop]: Abstraction has 1129 states and 2448 transitions. [2019-11-19 23:36:16,849 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-19 23:36:16,849 INFO L276 IsEmpty]: Start isEmpty. Operand 1129 states and 2448 transitions. [2019-11-19 23:36:16,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-19 23:36:16,851 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:36:16,852 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:36:16,852 INFO L410 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 23:36:16,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:36:16,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1322277612, now seen corresponding path program 2 times [2019-11-19 23:36:16,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:36:16,853 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622291335] [2019-11-19 23:36:16,853 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:36:16,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:36:16,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:36:16,887 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622291335] [2019-11-19 23:36:16,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:36:16,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-19 23:36:16,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487597438] [2019-11-19 23:36:16,888 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-19 23:36:16,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 23:36:16,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 23:36:16,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 23:36:16,889 INFO L87 Difference]: Start difference. First operand 1129 states and 2448 transitions. Second operand 3 states. [2019-11-19 23:36:16,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:36:16,958 INFO L93 Difference]: Finished difference Result 1006 states and 1983 transitions. [2019-11-19 23:36:16,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 23:36:16,959 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2019-11-19 23:36:16,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:36:16,963 INFO L225 Difference]: With dead ends: 1006 [2019-11-19 23:36:16,964 INFO L226 Difference]: Without dead ends: 772 [2019-11-19 23:36:16,964 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 23:36:16,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2019-11-19 23:36:16,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 685. [2019-11-19 23:36:16,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 685 states. [2019-11-19 23:36:16,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 1317 transitions. [2019-11-19 23:36:16,986 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 1317 transitions. Word has length 37 [2019-11-19 23:36:16,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:36:16,987 INFO L462 AbstractCegarLoop]: Abstraction has 685 states and 1317 transitions. [2019-11-19 23:36:16,987 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-19 23:36:16,987 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 1317 transitions. [2019-11-19 23:36:16,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-11-19 23:36:16,989 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:36:16,989 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:36:16,989 INFO L410 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 23:36:16,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:36:16,990 INFO L82 PathProgramCache]: Analyzing trace with hash 515522864, now seen corresponding path program 1 times [2019-11-19 23:36:16,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:36:16,990 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457512907] [2019-11-19 23:36:16,991 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:36:17,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:36:17,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:36:17,032 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457512907] [2019-11-19 23:36:17,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:36:17,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-19 23:36:17,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017030397] [2019-11-19 23:36:17,033 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-19 23:36:17,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 23:36:17,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 23:36:17,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 23:36:17,034 INFO L87 Difference]: Start difference. First operand 685 states and 1317 transitions. Second operand 3 states. [2019-11-19 23:36:17,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:36:17,060 INFO L93 Difference]: Finished difference Result 661 states and 1269 transitions. [2019-11-19 23:36:17,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 23:36:17,061 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2019-11-19 23:36:17,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:36:17,065 INFO L225 Difference]: With dead ends: 661 [2019-11-19 23:36:17,065 INFO L226 Difference]: Without dead ends: 589 [2019-11-19 23:36:17,066 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 23:36:17,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2019-11-19 23:36:17,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 589. [2019-11-19 23:36:17,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 589 states. [2019-11-19 23:36:17,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 1134 transitions. [2019-11-19 23:36:17,106 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 1134 transitions. Word has length 40 [2019-11-19 23:36:17,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:36:17,107 INFO L462 AbstractCegarLoop]: Abstraction has 589 states and 1134 transitions. [2019-11-19 23:36:17,107 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-19 23:36:17,107 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 1134 transitions. [2019-11-19 23:36:17,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-11-19 23:36:17,109 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:36:17,109 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:36:17,109 INFO L410 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 23:36:17,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:36:17,110 INFO L82 PathProgramCache]: Analyzing trace with hash -682160464, now seen corresponding path program 1 times [2019-11-19 23:36:17,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:36:17,110 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922679778] [2019-11-19 23:36:17,111 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:36:17,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:36:17,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:36:17,143 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922679778] [2019-11-19 23:36:17,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:36:17,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-19 23:36:17,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469643937] [2019-11-19 23:36:17,144 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-19 23:36:17,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 23:36:17,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 23:36:17,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 23:36:17,144 INFO L87 Difference]: Start difference. First operand 589 states and 1134 transitions. Second operand 3 states. [2019-11-19 23:36:17,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:36:17,158 INFO L93 Difference]: Finished difference Result 394 states and 822 transitions. [2019-11-19 23:36:17,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 23:36:17,159 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2019-11-19 23:36:17,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:36:17,159 INFO L225 Difference]: With dead ends: 394 [2019-11-19 23:36:17,159 INFO L226 Difference]: Without dead ends: 0 [2019-11-19 23:36:17,160 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 23:36:17,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-19 23:36:17,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-19 23:36:17,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-19 23:36:17,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-19 23:36:17,160 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2019-11-19 23:36:17,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:36:17,161 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 23:36:17,161 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-19 23:36:17,161 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-19 23:36:17,161 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-19 23:36:17,164 INFO L304 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-19 23:36:17,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 11:36:17 BasicIcfg [2019-11-19 23:36:17,165 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-19 23:36:17,170 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 23:36:17,170 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 23:36:17,171 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 23:36:17,171 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:36:15" (3/4) ... [2019-11-19 23:36:17,174 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-19 23:36:17,181 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2019-11-19 23:36:17,200 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2019-11-19 23:36:17,207 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-19 23:36:17,207 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-19 23:36:17,253 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f8c8ad45-3c86-4127-b034-b12207b32730/bin/uautomizer/witness.graphml [2019-11-19 23:36:17,253 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 23:36:17,256 INFO L168 Benchmark]: Toolchain (without parser) took 3284.22 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 234.9 MB). Free memory was 944.7 MB in the beginning and 1.2 GB in the end (delta: -250.8 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 23:36:17,257 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 23:36:17,257 INFO L168 Benchmark]: CACSL2BoogieTranslator took 566.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.7 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -174.6 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2019-11-19 23:36:17,258 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.17 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 23:36:17,259 INFO L168 Benchmark]: Boogie Preprocessor took 58.31 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 23:36:17,266 INFO L168 Benchmark]: RCFGBuilder took 418.11 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 29.0 MB). Peak memory consumption was 29.0 MB. Max. memory is 11.5 GB. [2019-11-19 23:36:17,266 INFO L168 Benchmark]: TraceAbstraction took 2093.51 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 79.2 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -107.8 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 23:36:17,267 INFO L168 Benchmark]: Witness Printer took 83.38 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 11.5 GB. [2019-11-19 23:36:17,268 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 566.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.7 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -174.6 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 59.17 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 58.31 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 418.11 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 29.0 MB). Peak memory consumption was 29.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2093.51 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 79.2 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -107.8 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 83.38 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 698]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 698]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 724]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 698]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 698]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 5 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 138 locations, 5 error locations. Result: SAFE, OverallTime: 2.0s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 1387 SDtfs, 572 SDslu, 856 SDs, 0 SdLazy, 176 SolverSat, 48 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2290occurred 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: 0.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 1008 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 298 NumberOfCodeBlocks, 298 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 289 ConstructedInterpolants, 0 QuantifiedInterpolants, 13311 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...