./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/01_inc.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_6fa4dd1c-a2d0-48c9-95d5-7816d814ff15/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_6fa4dd1c-a2d0-48c9-95d5-7816d814ff15/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6fa4dd1c-a2d0-48c9-95d5-7816d814ff15/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6fa4dd1c-a2d0-48c9-95d5-7816d814ff15/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/01_inc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_6fa4dd1c-a2d0-48c9-95d5-7816d814ff15/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6fa4dd1c-a2d0-48c9-95d5-7816d814ff15/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 4d91aa845889f03c833da32b972f2eb6326d7db9 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 01:19:09,833 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 01:19:09,834 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 01:19:09,848 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 01:19:09,848 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 01:19:09,849 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 01:19:09,851 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 01:19:09,863 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 01:19:09,867 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 01:19:09,870 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 01:19:09,871 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 01:19:09,872 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 01:19:09,873 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 01:19:09,875 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 01:19:09,875 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 01:19:09,876 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 01:19:09,877 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 01:19:09,878 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 01:19:09,880 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 01:19:09,883 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 01:19:09,887 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 01:19:09,888 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 01:19:09,891 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 01:19:09,892 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 01:19:09,894 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 01:19:09,894 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 01:19:09,894 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 01:19:09,895 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 01:19:09,896 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 01:19:09,897 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 01:19:09,897 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 01:19:09,898 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 01:19:09,898 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 01:19:09,899 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 01:19:09,900 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 01:19:09,900 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 01:19:09,900 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 01:19:09,901 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 01:19:09,901 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 01:19:09,901 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 01:19:09,902 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 01:19:09,903 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6fa4dd1c-a2d0-48c9-95d5-7816d814ff15/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 01:19:09,926 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 01:19:09,926 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 01:19:09,927 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 01:19:09,927 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 01:19:09,927 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 01:19:09,928 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 01:19:09,928 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 01:19:09,928 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 01:19:09,928 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 01:19:09,928 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 01:19:09,928 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 01:19:09,929 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 01:19:09,929 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 01:19:09,929 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 01:19:09,929 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 01:19:09,929 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 01:19:09,929 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 01:19:09,930 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 01:19:09,930 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 01:19:09,930 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 01:19:09,930 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 01:19:09,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 01:19:09,931 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 01:19:09,931 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 01:19:09,931 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 01:19:09,931 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 01:19:09,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 01:19:09,932 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 01:19:09,932 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_6fa4dd1c-a2d0-48c9-95d5-7816d814ff15/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 -> 4d91aa845889f03c833da32b972f2eb6326d7db9 [2019-11-20 01:19:10,089 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 01:19:10,098 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 01:19:10,103 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 01:19:10,109 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 01:19:10,110 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 01:19:10,111 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6fa4dd1c-a2d0-48c9-95d5-7816d814ff15/bin/uautomizer/../../sv-benchmarks/c/pthread-ext/01_inc.i [2019-11-20 01:19:10,158 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6fa4dd1c-a2d0-48c9-95d5-7816d814ff15/bin/uautomizer/data/0a2f42a1f/e6d85317a9464c029bfda7b1da3d2202/FLAG062347dd4 [2019-11-20 01:19:10,637 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 01:19:10,638 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6fa4dd1c-a2d0-48c9-95d5-7816d814ff15/sv-benchmarks/c/pthread-ext/01_inc.i [2019-11-20 01:19:10,661 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6fa4dd1c-a2d0-48c9-95d5-7816d814ff15/bin/uautomizer/data/0a2f42a1f/e6d85317a9464c029bfda7b1da3d2202/FLAG062347dd4 [2019-11-20 01:19:10,959 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6fa4dd1c-a2d0-48c9-95d5-7816d814ff15/bin/uautomizer/data/0a2f42a1f/e6d85317a9464c029bfda7b1da3d2202 [2019-11-20 01:19:10,961 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 01:19:10,961 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 01:19:10,964 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 01:19:10,964 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 01:19:10,966 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 01:19:10,967 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 01:19:10" (1/1) ... [2019-11-20 01:19:10,969 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@608095ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:19:10, skipping insertion in model container [2019-11-20 01:19:10,969 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 01:19:10" (1/1) ... [2019-11-20 01:19:10,975 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 01:19:11,013 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 01:19:11,381 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 01:19:11,390 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 01:19:11,440 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 01:19:11,510 INFO L192 MainTranslator]: Completed translation [2019-11-20 01:19:11,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:19:11 WrapperNode [2019-11-20 01:19:11,511 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 01:19:11,512 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 01:19:11,512 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 01:19:11,512 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 01:19:11,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:19:11" (1/1) ... [2019-11-20 01:19:11,531 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:19:11" (1/1) ... [2019-11-20 01:19:11,546 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 01:19:11,547 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 01:19:11,547 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 01:19:11,547 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 01:19:11,555 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:19:11" (1/1) ... [2019-11-20 01:19:11,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:19:11" (1/1) ... [2019-11-20 01:19:11,558 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:19:11" (1/1) ... [2019-11-20 01:19:11,558 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:19:11" (1/1) ... [2019-11-20 01:19:11,562 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:19:11" (1/1) ... [2019-11-20 01:19:11,566 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:19:11" (1/1) ... [2019-11-20 01:19:11,567 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:19:11" (1/1) ... [2019-11-20 01:19:11,570 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 01:19:11,570 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 01:19:11,570 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 01:19:11,570 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 01:19:11,571 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:19:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6fa4dd1c-a2d0-48c9-95d5-7816d814ff15/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 [2019-11-20 01:19:11,631 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2019-11-20 01:19:11,632 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2019-11-20 01:19:11,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-20 01:19:11,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 01:19:11,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 01:19:11,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 01:19:11,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 01:19:11,634 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-20 01:19:11,778 INFO L1494 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_acquire_returnLabel [2019-11-20 01:19:11,778 INFO L1494 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_release_returnLabel [2019-11-20 01:19:11,780 INFO L1494 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_release_returnLabel#2 [2019-11-20 01:19:11,922 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 01:19:11,922 INFO L285 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-20 01:19:11,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:19:11 BoogieIcfgContainer [2019-11-20 01:19:11,924 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 01:19:11,924 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 01:19:11,925 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 01:19:11,927 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 01:19:11,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 01:19:10" (1/3) ... [2019-11-20 01:19:11,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2105258e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 01:19:11, skipping insertion in model container [2019-11-20 01:19:11,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:19:11" (2/3) ... [2019-11-20 01:19:11,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2105258e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 01:19:11, skipping insertion in model container [2019-11-20 01:19:11,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:19:11" (3/3) ... [2019-11-20 01:19:11,930 INFO L109 eAbstractionObserver]: Analyzing ICFG 01_inc.i [2019-11-20 01:19:11,956 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:19:11,956 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:19:11,957 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:19:11,957 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:19:11,957 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork2_~v~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:19:11,957 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:19:11,958 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:19:11,958 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork2_~v~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:19:11,958 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork2_~v~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:19:11,958 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork2_~v~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:19:11,959 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork2_~v~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:19:11,959 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:19:11,959 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:19:11,960 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:19:11,960 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:19:11,960 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:19:11,960 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:19:11,960 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~v~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:19:11,961 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:19:11,961 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:19:11,961 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~v~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:19:11,961 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~v~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:19:11,962 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~v~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:19:11,962 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~v~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:19:11,962 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:19:11,963 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:19:11,963 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:19:11,963 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:19:11,963 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:19:11,964 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:19:11,964 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~v~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:19:11,964 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:19:11,964 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:19:11,965 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~v~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:19:11,965 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~v~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:19:11,965 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~v~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:19:11,965 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~v~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:19:11,966 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:19:11,966 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:19:11,978 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-20 01:19:11,978 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 01:19:11,983 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-20 01:19:11,991 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-20 01:19:12,008 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 01:19:12,009 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 01:19:12,009 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 01:19:12,009 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 01:19:12,009 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 01:19:12,009 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 01:19:12,009 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 01:19:12,009 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 01:19:12,018 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 59 places, 59 transitions [2019-11-20 01:19:13,768 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 19780 states. [2019-11-20 01:19:13,769 INFO L276 IsEmpty]: Start isEmpty. Operand 19780 states. [2019-11-20 01:19:13,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-20 01:19:13,780 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:19:13,781 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:19:13,782 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 01:19:13,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:19:13,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1891034393, now seen corresponding path program 1 times [2019-11-20 01:19:13,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:19:13,792 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227289249] [2019-11-20 01:19:13,792 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:19:13,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:19:14,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:19:14,094 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227289249] [2019-11-20 01:19:14,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 01:19:14,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-20 01:19:14,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598580708] [2019-11-20 01:19:14,102 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 01:19:14,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 01:19:14,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 01:19:14,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-20 01:19:14,118 INFO L87 Difference]: Start difference. First operand 19780 states. Second operand 5 states. [2019-11-20 01:19:14,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:19:14,624 INFO L93 Difference]: Finished difference Result 13175 states and 45395 transitions. [2019-11-20 01:19:14,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 01:19:14,626 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2019-11-20 01:19:14,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:19:14,787 INFO L225 Difference]: With dead ends: 13175 [2019-11-20 01:19:14,787 INFO L226 Difference]: Without dead ends: 12439 [2019-11-20 01:19:14,789 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-20 01:19:14,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12439 states. [2019-11-20 01:19:15,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12439 to 8479. [2019-11-20 01:19:15,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8479 states. [2019-11-20 01:19:15,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8479 states to 8479 states and 29341 transitions. [2019-11-20 01:19:15,309 INFO L78 Accepts]: Start accepts. Automaton has 8479 states and 29341 transitions. Word has length 18 [2019-11-20 01:19:15,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:19:15,309 INFO L462 AbstractCegarLoop]: Abstraction has 8479 states and 29341 transitions. [2019-11-20 01:19:15,309 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 01:19:15,310 INFO L276 IsEmpty]: Start isEmpty. Operand 8479 states and 29341 transitions. [2019-11-20 01:19:15,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-20 01:19:15,313 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:19:15,313 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:19:15,313 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 01:19:15,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:19:15,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1623891675, now seen corresponding path program 1 times [2019-11-20 01:19:15,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:19:15,314 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894006237] [2019-11-20 01:19:15,314 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:19:15,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:19:15,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:19:15,467 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894006237] [2019-11-20 01:19:15,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 01:19:15,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-20 01:19:15,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800340387] [2019-11-20 01:19:15,469 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 01:19:15,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 01:19:15,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 01:19:15,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-20 01:19:15,470 INFO L87 Difference]: Start difference. First operand 8479 states and 29341 transitions. Second operand 5 states. [2019-11-20 01:19:15,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:19:15,800 INFO L93 Difference]: Finished difference Result 13219 states and 44824 transitions. [2019-11-20 01:19:15,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 01:19:15,807 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2019-11-20 01:19:15,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:19:15,880 INFO L225 Difference]: With dead ends: 13219 [2019-11-20 01:19:15,880 INFO L226 Difference]: Without dead ends: 13095 [2019-11-20 01:19:15,882 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-20 01:19:15,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13095 states. [2019-11-20 01:19:16,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13095 to 8883. [2019-11-20 01:19:16,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8883 states. [2019-11-20 01:19:16,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8883 states to 8883 states and 30552 transitions. [2019-11-20 01:19:16,416 INFO L78 Accepts]: Start accepts. Automaton has 8883 states and 30552 transitions. Word has length 18 [2019-11-20 01:19:16,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:19:16,416 INFO L462 AbstractCegarLoop]: Abstraction has 8883 states and 30552 transitions. [2019-11-20 01:19:16,416 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 01:19:16,417 INFO L276 IsEmpty]: Start isEmpty. Operand 8883 states and 30552 transitions. [2019-11-20 01:19:16,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-20 01:19:16,418 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:19:16,418 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:19:16,418 INFO L410 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 01:19:16,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:19:16,419 INFO L82 PathProgramCache]: Analyzing trace with hash 2044456874, now seen corresponding path program 1 times [2019-11-20 01:19:16,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:19:16,419 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104824533] [2019-11-20 01:19:16,420 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:19:16,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:19:16,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:19:16,535 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104824533] [2019-11-20 01:19:16,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 01:19:16,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-20 01:19:16,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457673211] [2019-11-20 01:19:16,536 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 01:19:16,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 01:19:16,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 01:19:16,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-20 01:19:16,537 INFO L87 Difference]: Start difference. First operand 8883 states and 30552 transitions. Second operand 5 states. [2019-11-20 01:19:16,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:19:16,730 INFO L93 Difference]: Finished difference Result 13811 states and 46592 transitions. [2019-11-20 01:19:16,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 01:19:16,731 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2019-11-20 01:19:16,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:19:16,787 INFO L225 Difference]: With dead ends: 13811 [2019-11-20 01:19:16,787 INFO L226 Difference]: Without dead ends: 13687 [2019-11-20 01:19:16,787 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-20 01:19:16,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13687 states. [2019-11-20 01:19:17,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13687 to 9223. [2019-11-20 01:19:17,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9223 states. [2019-11-20 01:19:17,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9223 states to 9223 states and 31483 transitions. [2019-11-20 01:19:17,123 INFO L78 Accepts]: Start accepts. Automaton has 9223 states and 31483 transitions. Word has length 18 [2019-11-20 01:19:17,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:19:17,124 INFO L462 AbstractCegarLoop]: Abstraction has 9223 states and 31483 transitions. [2019-11-20 01:19:17,124 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 01:19:17,124 INFO L276 IsEmpty]: Start isEmpty. Operand 9223 states and 31483 transitions. [2019-11-20 01:19:17,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-20 01:19:17,128 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:19:17,128 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:19:17,129 INFO L410 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 01:19:17,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:19:17,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1672813373, now seen corresponding path program 1 times [2019-11-20 01:19:17,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:19:17,130 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630445939] [2019-11-20 01:19:17,130 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:19:17,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:19:17,316 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:19:17,317 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630445939] [2019-11-20 01:19:17,317 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465156161] [2019-11-20 01:19:17,317 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6fa4dd1c-a2d0-48c9-95d5-7816d814ff15/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 01:19:17,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:19:17,398 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-20 01:19:17,404 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:19:17,509 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:19:17,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 01:19:17,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 11 [2019-11-20 01:19:17,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911531015] [2019-11-20 01:19:17,510 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-20 01:19:17,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 01:19:17,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-20 01:19:17,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-11-20 01:19:17,511 INFO L87 Difference]: Start difference. First operand 9223 states and 31483 transitions. Second operand 11 states. [2019-11-20 01:19:18,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:19:18,505 INFO L93 Difference]: Finished difference Result 12547 states and 41221 transitions. [2019-11-20 01:19:18,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-11-20 01:19:18,506 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2019-11-20 01:19:18,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:19:18,576 INFO L225 Difference]: With dead ends: 12547 [2019-11-20 01:19:18,576 INFO L226 Difference]: Without dead ends: 12547 [2019-11-20 01:19:18,576 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=136, Invalid=464, Unknown=0, NotChecked=0, Total=600 [2019-11-20 01:19:18,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12547 states. [2019-11-20 01:19:18,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12547 to 6391. [2019-11-20 01:19:18,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6391 states. [2019-11-20 01:19:18,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6391 states to 6391 states and 21141 transitions. [2019-11-20 01:19:18,861 INFO L78 Accepts]: Start accepts. Automaton has 6391 states and 21141 transitions. Word has length 27 [2019-11-20 01:19:18,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:19:18,862 INFO L462 AbstractCegarLoop]: Abstraction has 6391 states and 21141 transitions. [2019-11-20 01:19:18,862 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-20 01:19:18,862 INFO L276 IsEmpty]: Start isEmpty. Operand 6391 states and 21141 transitions. [2019-11-20 01:19:18,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-20 01:19:18,866 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:19:18,866 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:19:19,071 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 01:19:19,071 INFO L410 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 01:19:19,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:19:19,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1046195042, now seen corresponding path program 1 times [2019-11-20 01:19:19,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:19:19,072 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542836060] [2019-11-20 01:19:19,072 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:19:19,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:19:19,231 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:19:19,231 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542836060] [2019-11-20 01:19:19,231 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109341223] [2019-11-20 01:19:19,231 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6fa4dd1c-a2d0-48c9-95d5-7816d814ff15/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 01:19:19,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:19:19,288 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-20 01:19:19,289 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:19:19,342 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:19:19,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 01:19:19,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 9 [2019-11-20 01:19:19,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958080845] [2019-11-20 01:19:19,343 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-20 01:19:19,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 01:19:19,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-20 01:19:19,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-20 01:19:19,344 INFO L87 Difference]: Start difference. First operand 6391 states and 21141 transitions. Second operand 9 states. [2019-11-20 01:19:19,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:19:19,614 INFO L93 Difference]: Finished difference Result 8647 states and 28188 transitions. [2019-11-20 01:19:19,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-20 01:19:19,615 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2019-11-20 01:19:19,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:19:19,643 INFO L225 Difference]: With dead ends: 8647 [2019-11-20 01:19:19,644 INFO L226 Difference]: Without dead ends: 8647 [2019-11-20 01:19:19,644 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2019-11-20 01:19:19,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8647 states. [2019-11-20 01:19:19,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8647 to 6511. [2019-11-20 01:19:19,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6511 states. [2019-11-20 01:19:19,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6511 states to 6511 states and 21552 transitions. [2019-11-20 01:19:19,825 INFO L78 Accepts]: Start accepts. Automaton has 6511 states and 21552 transitions. Word has length 27 [2019-11-20 01:19:19,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:19:19,826 INFO L462 AbstractCegarLoop]: Abstraction has 6511 states and 21552 transitions. [2019-11-20 01:19:19,826 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-20 01:19:19,826 INFO L276 IsEmpty]: Start isEmpty. Operand 6511 states and 21552 transitions. [2019-11-20 01:19:19,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-20 01:19:19,829 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:19:19,830 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:19:20,040 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 01:19:20,041 INFO L410 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 01:19:20,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:19:20,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1460906693, now seen corresponding path program 2 times [2019-11-20 01:19:20,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:19:20,041 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139304652] [2019-11-20 01:19:20,041 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:19:20,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:19:20,153 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-20 01:19:20,153 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139304652] [2019-11-20 01:19:20,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 01:19:20,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-20 01:19:20,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006725476] [2019-11-20 01:19:20,154 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 01:19:20,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 01:19:20,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 01:19:20,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-20 01:19:20,154 INFO L87 Difference]: Start difference. First operand 6511 states and 21552 transitions. Second operand 7 states. [2019-11-20 01:19:20,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:19:20,415 INFO L93 Difference]: Finished difference Result 9023 states and 29123 transitions. [2019-11-20 01:19:20,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-20 01:19:20,418 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2019-11-20 01:19:20,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:19:20,445 INFO L225 Difference]: With dead ends: 9023 [2019-11-20 01:19:20,445 INFO L226 Difference]: Without dead ends: 8875 [2019-11-20 01:19:20,446 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2019-11-20 01:19:20,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8875 states. [2019-11-20 01:19:20,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8875 to 5755. [2019-11-20 01:19:20,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5755 states. [2019-11-20 01:19:20,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5755 states to 5755 states and 18648 transitions. [2019-11-20 01:19:20,786 INFO L78 Accepts]: Start accepts. Automaton has 5755 states and 18648 transitions. Word has length 27 [2019-11-20 01:19:20,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:19:20,786 INFO L462 AbstractCegarLoop]: Abstraction has 5755 states and 18648 transitions. [2019-11-20 01:19:20,786 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 01:19:20,786 INFO L276 IsEmpty]: Start isEmpty. Operand 5755 states and 18648 transitions. [2019-11-20 01:19:20,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-20 01:19:20,789 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:19:20,789 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:19:20,789 INFO L410 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 01:19:20,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:19:20,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1960956010, now seen corresponding path program 2 times [2019-11-20 01:19:20,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:19:20,790 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192443889] [2019-11-20 01:19:20,790 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:19:20,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:19:20,900 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-20 01:19:20,900 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192443889] [2019-11-20 01:19:20,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 01:19:20,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-20 01:19:20,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540414095] [2019-11-20 01:19:20,901 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 01:19:20,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 01:19:20,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 01:19:20,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-20 01:19:20,902 INFO L87 Difference]: Start difference. First operand 5755 states and 18648 transitions. Second operand 7 states. [2019-11-20 01:19:21,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:19:21,283 INFO L93 Difference]: Finished difference Result 9407 states and 29822 transitions. [2019-11-20 01:19:21,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-20 01:19:21,284 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2019-11-20 01:19:21,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:19:21,295 INFO L225 Difference]: With dead ends: 9407 [2019-11-20 01:19:21,295 INFO L226 Difference]: Without dead ends: 9259 [2019-11-20 01:19:21,295 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2019-11-20 01:19:21,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9259 states. [2019-11-20 01:19:21,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9259 to 4871. [2019-11-20 01:19:21,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4871 states. [2019-11-20 01:19:21,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4871 states to 4871 states and 15376 transitions. [2019-11-20 01:19:21,445 INFO L78 Accepts]: Start accepts. Automaton has 4871 states and 15376 transitions. Word has length 27 [2019-11-20 01:19:21,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:19:21,446 INFO L462 AbstractCegarLoop]: Abstraction has 4871 states and 15376 transitions. [2019-11-20 01:19:21,446 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 01:19:21,446 INFO L276 IsEmpty]: Start isEmpty. Operand 4871 states and 15376 transitions. [2019-11-20 01:19:21,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-20 01:19:21,449 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:19:21,449 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:19:21,449 INFO L410 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 01:19:21,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:19:21,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1937626090, now seen corresponding path program 1 times [2019-11-20 01:19:21,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:19:21,450 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299774569] [2019-11-20 01:19:21,450 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:19:21,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:19:21,544 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:19:21,544 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299774569] [2019-11-20 01:19:21,544 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501543100] [2019-11-20 01:19:21,544 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6fa4dd1c-a2d0-48c9-95d5-7816d814ff15/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 01:19:21,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:19:21,604 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-20 01:19:21,605 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:19:21,686 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:19:21,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 01:19:21,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 9 [2019-11-20 01:19:21,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649538227] [2019-11-20 01:19:21,687 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-20 01:19:21,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 01:19:21,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-20 01:19:21,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-20 01:19:21,688 INFO L87 Difference]: Start difference. First operand 4871 states and 15376 transitions. Second operand 9 states. [2019-11-20 01:19:21,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:19:21,912 INFO L93 Difference]: Finished difference Result 7491 states and 23505 transitions. [2019-11-20 01:19:21,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-20 01:19:21,913 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2019-11-20 01:19:21,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:19:21,921 INFO L225 Difference]: With dead ends: 7491 [2019-11-20 01:19:21,921 INFO L226 Difference]: Without dead ends: 7347 [2019-11-20 01:19:21,921 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2019-11-20 01:19:21,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7347 states. [2019-11-20 01:19:22,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7347 to 5103. [2019-11-20 01:19:22,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5103 states. [2019-11-20 01:19:22,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5103 states to 5103 states and 16085 transitions. [2019-11-20 01:19:22,044 INFO L78 Accepts]: Start accepts. Automaton has 5103 states and 16085 transitions. Word has length 27 [2019-11-20 01:19:22,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:19:22,045 INFO L462 AbstractCegarLoop]: Abstraction has 5103 states and 16085 transitions. [2019-11-20 01:19:22,045 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-20 01:19:22,045 INFO L276 IsEmpty]: Start isEmpty. Operand 5103 states and 16085 transitions. [2019-11-20 01:19:22,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-20 01:19:22,048 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:19:22,048 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:19:22,250 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 01:19:22,250 INFO L410 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 01:19:22,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:19:22,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1356873630, now seen corresponding path program 2 times [2019-11-20 01:19:22,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:19:22,251 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38880703] [2019-11-20 01:19:22,251 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:19:22,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:19:22,370 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-20 01:19:22,370 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38880703] [2019-11-20 01:19:22,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 01:19:22,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-20 01:19:22,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170637264] [2019-11-20 01:19:22,371 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 01:19:22,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 01:19:22,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 01:19:22,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-20 01:19:22,371 INFO L87 Difference]: Start difference. First operand 5103 states and 16085 transitions. Second operand 7 states. [2019-11-20 01:19:22,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:19:22,648 INFO L93 Difference]: Finished difference Result 8031 states and 24950 transitions. [2019-11-20 01:19:22,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-20 01:19:22,648 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2019-11-20 01:19:22,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:19:22,657 INFO L225 Difference]: With dead ends: 8031 [2019-11-20 01:19:22,657 INFO L226 Difference]: Without dead ends: 7859 [2019-11-20 01:19:22,657 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2019-11-20 01:19:22,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7859 states. [2019-11-20 01:19:22,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7859 to 4247. [2019-11-20 01:19:22,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4247 states. [2019-11-20 01:19:22,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4247 states to 4247 states and 13072 transitions. [2019-11-20 01:19:22,763 INFO L78 Accepts]: Start accepts. Automaton has 4247 states and 13072 transitions. Word has length 27 [2019-11-20 01:19:22,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:19:22,764 INFO L462 AbstractCegarLoop]: Abstraction has 4247 states and 13072 transitions. [2019-11-20 01:19:22,764 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 01:19:22,764 INFO L276 IsEmpty]: Start isEmpty. Operand 4247 states and 13072 transitions. [2019-11-20 01:19:22,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-11-20 01:19:22,771 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:19:22,771 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 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] [2019-11-20 01:19:22,772 INFO L410 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 01:19:22,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:19:22,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1443476226, now seen corresponding path program 1 times [2019-11-20 01:19:22,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:19:22,772 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651359998] [2019-11-20 01:19:22,773 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:19:22,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:19:22,924 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:19:22,925 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651359998] [2019-11-20 01:19:22,925 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310449964] [2019-11-20 01:19:22,925 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6fa4dd1c-a2d0-48c9-95d5-7816d814ff15/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 01:19:22,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:19:22,972 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-20 01:19:22,974 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:19:23,047 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:19:23,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 01:19:23,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 12 [2019-11-20 01:19:23,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174179784] [2019-11-20 01:19:23,048 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-20 01:19:23,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 01:19:23,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-20 01:19:23,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-11-20 01:19:23,049 INFO L87 Difference]: Start difference. First operand 4247 states and 13072 transitions. Second operand 12 states. [2019-11-20 01:19:23,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:19:23,422 INFO L93 Difference]: Finished difference Result 6047 states and 18654 transitions. [2019-11-20 01:19:23,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-20 01:19:23,422 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 36 [2019-11-20 01:19:23,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:19:23,428 INFO L225 Difference]: With dead ends: 6047 [2019-11-20 01:19:23,428 INFO L226 Difference]: Without dead ends: 5371 [2019-11-20 01:19:23,428 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2019-11-20 01:19:23,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5371 states. [2019-11-20 01:19:23,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5371 to 4103. [2019-11-20 01:19:23,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4103 states. [2019-11-20 01:19:23,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4103 states to 4103 states and 12604 transitions. [2019-11-20 01:19:23,502 INFO L78 Accepts]: Start accepts. Automaton has 4103 states and 12604 transitions. Word has length 36 [2019-11-20 01:19:23,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:19:23,503 INFO L462 AbstractCegarLoop]: Abstraction has 4103 states and 12604 transitions. [2019-11-20 01:19:23,503 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-20 01:19:23,503 INFO L276 IsEmpty]: Start isEmpty. Operand 4103 states and 12604 transitions. [2019-11-20 01:19:23,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-11-20 01:19:23,510 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:19:23,510 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 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] [2019-11-20 01:19:23,713 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 01:19:23,713 INFO L410 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 01:19:23,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:19:23,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1851023494, now seen corresponding path program 2 times [2019-11-20 01:19:23,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:19:23,714 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888120021] [2019-11-20 01:19:23,714 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:19:23,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:19:23,882 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-20 01:19:23,882 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888120021] [2019-11-20 01:19:23,882 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577529791] [2019-11-20 01:19:23,882 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6fa4dd1c-a2d0-48c9-95d5-7816d814ff15/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 01:19:23,992 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-20 01:19:23,992 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 01:19:23,992 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-20 01:19:23,994 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:19:24,035 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-20 01:19:24,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-20 01:19:24,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2019-11-20 01:19:24,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828108954] [2019-11-20 01:19:24,036 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 01:19:24,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 01:19:24,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 01:19:24,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2019-11-20 01:19:24,037 INFO L87 Difference]: Start difference. First operand 4103 states and 12604 transitions. Second operand 5 states. [2019-11-20 01:19:24,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:19:24,177 INFO L93 Difference]: Finished difference Result 5983 states and 18590 transitions. [2019-11-20 01:19:24,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 01:19:24,178 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2019-11-20 01:19:24,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:19:24,187 INFO L225 Difference]: With dead ends: 5983 [2019-11-20 01:19:24,187 INFO L226 Difference]: Without dead ends: 5731 [2019-11-20 01:19:24,187 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2019-11-20 01:19:24,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5731 states. [2019-11-20 01:19:24,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5731 to 4039. [2019-11-20 01:19:24,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4039 states. [2019-11-20 01:19:24,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4039 states to 4039 states and 12343 transitions. [2019-11-20 01:19:24,255 INFO L78 Accepts]: Start accepts. Automaton has 4039 states and 12343 transitions. Word has length 36 [2019-11-20 01:19:24,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:19:24,256 INFO L462 AbstractCegarLoop]: Abstraction has 4039 states and 12343 transitions. [2019-11-20 01:19:24,256 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 01:19:24,257 INFO L276 IsEmpty]: Start isEmpty. Operand 4039 states and 12343 transitions. [2019-11-20 01:19:24,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-11-20 01:19:24,262 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:19:24,262 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 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] [2019-11-20 01:19:24,465 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 01:19:24,465 INFO L410 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 01:19:24,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:19:24,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1851023078, now seen corresponding path program 1 times [2019-11-20 01:19:24,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:19:24,466 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141693828] [2019-11-20 01:19:24,466 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:19:24,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:19:24,591 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-20 01:19:24,591 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141693828] [2019-11-20 01:19:24,591 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946678365] [2019-11-20 01:19:24,591 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6fa4dd1c-a2d0-48c9-95d5-7816d814ff15/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 01:19:24,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:19:24,633 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-20 01:19:24,634 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:19:24,681 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-20 01:19:24,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 01:19:24,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 11 [2019-11-20 01:19:24,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049586757] [2019-11-20 01:19:24,682 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-20 01:19:24,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 01:19:24,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-20 01:19:24,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-11-20 01:19:24,682 INFO L87 Difference]: Start difference. First operand 4039 states and 12343 transitions. Second operand 11 states. [2019-11-20 01:19:24,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:19:24,931 INFO L93 Difference]: Finished difference Result 4319 states and 13024 transitions. [2019-11-20 01:19:24,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-20 01:19:24,931 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 36 [2019-11-20 01:19:24,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:19:24,936 INFO L225 Difference]: With dead ends: 4319 [2019-11-20 01:19:24,937 INFO L226 Difference]: Without dead ends: 3643 [2019-11-20 01:19:24,937 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2019-11-20 01:19:24,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3643 states. [2019-11-20 01:19:24,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3643 to 3643. [2019-11-20 01:19:24,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3643 states. [2019-11-20 01:19:24,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3643 states to 3643 states and 11224 transitions. [2019-11-20 01:19:24,991 INFO L78 Accepts]: Start accepts. Automaton has 3643 states and 11224 transitions. Word has length 36 [2019-11-20 01:19:24,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:19:24,991 INFO L462 AbstractCegarLoop]: Abstraction has 3643 states and 11224 transitions. [2019-11-20 01:19:24,992 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-20 01:19:24,992 INFO L276 IsEmpty]: Start isEmpty. Operand 3643 states and 11224 transitions. [2019-11-20 01:19:24,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-11-20 01:19:24,996 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:19:24,996 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 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] [2019-11-20 01:19:25,199 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 01:19:25,199 INFO L410 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 01:19:25,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:19:25,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1837938294, now seen corresponding path program 3 times [2019-11-20 01:19:25,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:19:25,199 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867012213] [2019-11-20 01:19:25,200 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:19:25,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:19:25,343 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-20 01:19:25,343 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867012213] [2019-11-20 01:19:25,343 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090838769] [2019-11-20 01:19:25,343 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6fa4dd1c-a2d0-48c9-95d5-7816d814ff15/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 01:19:25,396 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-11-20 01:19:25,397 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 01:19:25,398 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-20 01:19:25,399 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:19:25,449 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-20 01:19:25,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 01:19:25,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 11 [2019-11-20 01:19:25,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550218145] [2019-11-20 01:19:25,450 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-20 01:19:25,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 01:19:25,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-20 01:19:25,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-11-20 01:19:25,451 INFO L87 Difference]: Start difference. First operand 3643 states and 11224 transitions. Second operand 11 states. [2019-11-20 01:19:25,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:19:25,848 INFO L93 Difference]: Finished difference Result 5267 states and 16158 transitions. [2019-11-20 01:19:25,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-20 01:19:25,848 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 36 [2019-11-20 01:19:25,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:19:25,855 INFO L225 Difference]: With dead ends: 5267 [2019-11-20 01:19:25,855 INFO L226 Difference]: Without dead ends: 4735 [2019-11-20 01:19:25,856 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2019-11-20 01:19:25,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4735 states. [2019-11-20 01:19:25,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4735 to 3259. [2019-11-20 01:19:25,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3259 states. [2019-11-20 01:19:25,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3259 states to 3259 states and 9944 transitions. [2019-11-20 01:19:25,923 INFO L78 Accepts]: Start accepts. Automaton has 3259 states and 9944 transitions. Word has length 36 [2019-11-20 01:19:25,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:19:25,924 INFO L462 AbstractCegarLoop]: Abstraction has 3259 states and 9944 transitions. [2019-11-20 01:19:25,924 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-20 01:19:25,924 INFO L276 IsEmpty]: Start isEmpty. Operand 3259 states and 9944 transitions. [2019-11-20 01:19:25,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-11-20 01:19:25,927 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:19:25,928 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 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] [2019-11-20 01:19:26,139 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 01:19:26,139 INFO L410 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 01:19:26,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:19:26,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1976323242, now seen corresponding path program 2 times [2019-11-20 01:19:26,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:19:26,140 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329371803] [2019-11-20 01:19:26,140 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:19:26,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:19:26,163 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-20 01:19:26,163 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329371803] [2019-11-20 01:19:26,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 01:19:26,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-20 01:19:26,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247114594] [2019-11-20 01:19:26,164 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 01:19:26,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 01:19:26,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 01:19:26,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 01:19:26,165 INFO L87 Difference]: Start difference. First operand 3259 states and 9944 transitions. Second operand 3 states. [2019-11-20 01:19:26,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:19:26,183 INFO L93 Difference]: Finished difference Result 2611 states and 7726 transitions. [2019-11-20 01:19:26,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 01:19:26,184 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2019-11-20 01:19:26,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:19:26,187 INFO L225 Difference]: With dead ends: 2611 [2019-11-20 01:19:26,187 INFO L226 Difference]: Without dead ends: 2467 [2019-11-20 01:19:26,187 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 [2019-11-20 01:19:26,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2467 states. [2019-11-20 01:19:26,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2467 to 2467. [2019-11-20 01:19:26,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2467 states. [2019-11-20 01:19:26,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2467 states to 2467 states and 7306 transitions. [2019-11-20 01:19:26,227 INFO L78 Accepts]: Start accepts. Automaton has 2467 states and 7306 transitions. Word has length 36 [2019-11-20 01:19:26,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:19:26,227 INFO L462 AbstractCegarLoop]: Abstraction has 2467 states and 7306 transitions. [2019-11-20 01:19:26,227 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 01:19:26,227 INFO L276 IsEmpty]: Start isEmpty. Operand 2467 states and 7306 transitions. [2019-11-20 01:19:26,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-11-20 01:19:26,230 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:19:26,230 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 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] [2019-11-20 01:19:26,230 INFO L410 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 01:19:26,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:19:26,231 INFO L82 PathProgramCache]: Analyzing trace with hash -1542268034, now seen corresponding path program 4 times [2019-11-20 01:19:26,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:19:26,231 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741718664] [2019-11-20 01:19:26,231 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:19:26,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:19:26,380 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-20 01:19:26,380 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741718664] [2019-11-20 01:19:26,380 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908519987] [2019-11-20 01:19:26,381 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6fa4dd1c-a2d0-48c9-95d5-7816d814ff15/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 01:19:26,441 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-20 01:19:26,442 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 01:19:26,444 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-20 01:19:26,449 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:19:26,508 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-20 01:19:26,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 01:19:26,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 11 [2019-11-20 01:19:26,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180627881] [2019-11-20 01:19:26,508 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-20 01:19:26,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 01:19:26,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-20 01:19:26,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-11-20 01:19:26,509 INFO L87 Difference]: Start difference. First operand 2467 states and 7306 transitions. Second operand 11 states. [2019-11-20 01:19:26,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:19:26,768 INFO L93 Difference]: Finished difference Result 2999 states and 8869 transitions. [2019-11-20 01:19:26,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-20 01:19:26,769 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 36 [2019-11-20 01:19:26,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:19:26,771 INFO L225 Difference]: With dead ends: 2999 [2019-11-20 01:19:26,771 INFO L226 Difference]: Without dead ends: 2071 [2019-11-20 01:19:26,771 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2019-11-20 01:19:26,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2071 states. [2019-11-20 01:19:26,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2071 to 2071. [2019-11-20 01:19:26,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2071 states. [2019-11-20 01:19:26,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2071 states to 2071 states and 6187 transitions. [2019-11-20 01:19:26,796 INFO L78 Accepts]: Start accepts. Automaton has 2071 states and 6187 transitions. Word has length 36 [2019-11-20 01:19:26,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:19:26,796 INFO L462 AbstractCegarLoop]: Abstraction has 2071 states and 6187 transitions. [2019-11-20 01:19:26,796 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-20 01:19:26,796 INFO L276 IsEmpty]: Start isEmpty. Operand 2071 states and 6187 transitions. [2019-11-20 01:19:26,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-11-20 01:19:26,798 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:19:26,798 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 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] [2019-11-20 01:19:26,998 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 01:19:26,999 INFO L410 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 01:19:26,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:19:26,999 INFO L82 PathProgramCache]: Analyzing trace with hash 481028870, now seen corresponding path program 5 times [2019-11-20 01:19:26,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:19:26,999 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371248531] [2019-11-20 01:19:26,999 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:19:27,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:19:27,146 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-20 01:19:27,146 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371248531] [2019-11-20 01:19:27,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 01:19:27,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-20 01:19:27,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105884858] [2019-11-20 01:19:27,147 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-20 01:19:27,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 01:19:27,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-20 01:19:27,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-20 01:19:27,147 INFO L87 Difference]: Start difference. First operand 2071 states and 6187 transitions. Second operand 9 states. [2019-11-20 01:19:27,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:19:27,330 INFO L93 Difference]: Finished difference Result 1787 states and 5110 transitions. [2019-11-20 01:19:27,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-20 01:19:27,331 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2019-11-20 01:19:27,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:19:27,332 INFO L225 Difference]: With dead ends: 1787 [2019-11-20 01:19:27,332 INFO L226 Difference]: Without dead ends: 1111 [2019-11-20 01:19:27,333 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2019-11-20 01:19:27,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1111 states. [2019-11-20 01:19:27,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1111 to 1111. [2019-11-20 01:19:27,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1111 states. [2019-11-20 01:19:27,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 3079 transitions. [2019-11-20 01:19:27,349 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 3079 transitions. Word has length 36 [2019-11-20 01:19:27,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:19:27,349 INFO L462 AbstractCegarLoop]: Abstraction has 1111 states and 3079 transitions. [2019-11-20 01:19:27,349 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-20 01:19:27,349 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 3079 transitions. [2019-11-20 01:19:27,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-11-20 01:19:27,350 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:19:27,350 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 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] [2019-11-20 01:19:27,350 INFO L410 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 01:19:27,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:19:27,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1313048934, now seen corresponding path program 3 times [2019-11-20 01:19:27,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:19:27,351 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118659875] [2019-11-20 01:19:27,351 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:19:27,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:19:27,494 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-20 01:19:27,495 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118659875] [2019-11-20 01:19:27,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 01:19:27,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-20 01:19:27,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464057890] [2019-11-20 01:19:27,495 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-20 01:19:27,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 01:19:27,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-20 01:19:27,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-20 01:19:27,496 INFO L87 Difference]: Start difference. First operand 1111 states and 3079 transitions. Second operand 9 states. [2019-11-20 01:19:27,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:19:27,657 INFO L93 Difference]: Finished difference Result 791 states and 2023 transitions. [2019-11-20 01:19:27,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-20 01:19:27,658 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2019-11-20 01:19:27,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:19:27,658 INFO L225 Difference]: With dead ends: 791 [2019-11-20 01:19:27,658 INFO L226 Difference]: Without dead ends: 0 [2019-11-20 01:19:27,658 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2019-11-20 01:19:27,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-20 01:19:27,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-20 01:19:27,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-20 01:19:27,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-20 01:19:27,659 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2019-11-20 01:19:27,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:19:27,659 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 01:19:27,659 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-20 01:19:27,659 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-20 01:19:27,659 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-20 01:19:27,662 INFO L304 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-20 01:19:27,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 01:19:27 BasicIcfg [2019-11-20 01:19:27,663 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 01:19:27,664 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 01:19:27,664 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 01:19:27,664 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 01:19:27,665 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:19:11" (3/4) ... [2019-11-20 01:19:27,668 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-20 01:19:27,672 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2019-11-20 01:19:27,674 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-11-20 01:19:27,675 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-20 01:19:27,675 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-20 01:19:27,706 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6fa4dd1c-a2d0-48c9-95d5-7816d814ff15/bin/uautomizer/witness.graphml [2019-11-20 01:19:27,706 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 01:19:27,708 INFO L168 Benchmark]: Toolchain (without parser) took 16746.18 ms. Allocated memory was 1.0 GB in the beginning and 1.8 GB in the end (delta: 817.4 MB). Free memory was 939.3 MB in the beginning and 875.3 MB in the end (delta: 64.0 MB). Peak memory consumption was 881.4 MB. Max. memory is 11.5 GB. [2019-11-20 01:19:27,709 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 01:19:27,709 INFO L168 Benchmark]: CACSL2BoogieTranslator took 547.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.4 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -193.2 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2019-11-20 01:19:27,710 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.10 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-20 01:19:27,710 INFO L168 Benchmark]: Boogie Preprocessor took 22.98 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. [2019-11-20 01:19:27,710 INFO L168 Benchmark]: RCFGBuilder took 353.64 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: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. [2019-11-20 01:19:27,711 INFO L168 Benchmark]: TraceAbstraction took 15739.07 ms. Allocated memory was 1.2 GB in the beginning and 1.8 GB in the end (delta: 658.0 MB). Free memory was 1.1 GB in the beginning and 881.0 MB in the end (delta: 222.5 MB). Peak memory consumption was 880.5 MB. Max. memory is 11.5 GB. [2019-11-20 01:19:27,711 INFO L168 Benchmark]: Witness Printer took 42.77 ms. Allocated memory is still 1.8 GB. Free memory was 881.0 MB in the beginning and 875.3 MB in the end (delta: 5.7 MB). Peak memory consumption was 5.7 MB. Max. memory is 11.5 GB. [2019-11-20 01:19:27,714 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 547.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.4 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -193.2 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 35.10 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.98 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 353.64 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: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 15739.07 ms. Allocated memory was 1.2 GB in the beginning and 1.8 GB in the end (delta: 658.0 MB). Free memory was 1.1 GB in the beginning and 881.0 MB in the end (delta: 222.5 MB). Peak memory consumption was 880.5 MB. Max. memory is 11.5 GB. * Witness Printer took 42.77 ms. Allocated memory is still 1.8 GB. Free memory was 881.0 MB in the beginning and 875.3 MB in the end (delta: 5.7 MB). Peak memory consumption was 5.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 695]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 695]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 695]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 695]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 65 locations, 4 error locations. Result: SAFE, OverallTime: 15.6s, OverallIterations: 17, TraceHistogramMax: 3, AutomataDifference: 5.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 1530 SDtfs, 2552 SDslu, 5066 SDs, 0 SdLazy, 2817 SolverSat, 214 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 457 GetRequests, 261 SyntacticMatches, 8 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19780occurred 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: 2.9s AutomataMinimizationTime, 17 MinimizatonAttempts, 38728 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 765 NumberOfCodeBlocks, 746 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 740 ConstructedInterpolants, 0 QuantifiedInterpolants, 137302 SizeOfPredicates, 48 NumberOfNonLiveVariables, 678 ConjunctsInSsa, 122 ConjunctsInUnsatCore, 25 InterpolantComputations, 10 PerfectInterpolantSequences, 73/157 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...