./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/triangular-2.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_0233d817-c5e7-47d2-a98d-e2479f9fcfdc/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_0233d817-c5e7-47d2-a98d-e2479f9fcfdc/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0233d817-c5e7-47d2-a98d-e2479f9fcfdc/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0233d817-c5e7-47d2-a98d-e2479f9fcfdc/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/triangular-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_0233d817-c5e7-47d2-a98d-e2479f9fcfdc/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0233d817-c5e7-47d2-a98d-e2479f9fcfdc/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 5f3104f8866991317081f2a037cd413a142d8b2f ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-19 22:33:11,946 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 22:33:11,948 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 22:33:11,964 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 22:33:11,964 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 22:33:11,965 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 22:33:11,967 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 22:33:11,976 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 22:33:11,981 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 22:33:11,986 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 22:33:11,987 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 22:33:11,989 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 22:33:11,989 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 22:33:11,992 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 22:33:11,993 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 22:33:11,995 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 22:33:11,996 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 22:33:11,997 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 22:33:12,000 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 22:33:12,004 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 22:33:12,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 22:33:12,011 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 22:33:12,014 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 22:33:12,015 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 22:33:12,018 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 22:33:12,018 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 22:33:12,018 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 22:33:12,020 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 22:33:12,021 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 22:33:12,022 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 22:33:12,022 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 22:33:12,023 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 22:33:12,024 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 22:33:12,025 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 22:33:12,026 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 22:33:12,026 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 22:33:12,027 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 22:33:12,027 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 22:33:12,027 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 22:33:12,028 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 22:33:12,030 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 22:33:12,030 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0233d817-c5e7-47d2-a98d-e2479f9fcfdc/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-19 22:33:12,059 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 22:33:12,070 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 22:33:12,071 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 22:33:12,072 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 22:33:12,072 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 22:33:12,072 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 22:33:12,073 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 22:33:12,073 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 22:33:12,073 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 22:33:12,073 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 22:33:12,074 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-19 22:33:12,074 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 22:33:12,074 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-19 22:33:12,074 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 22:33:12,075 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 22:33:12,075 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 22:33:12,075 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-19 22:33:12,076 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 22:33:12,076 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 22:33:12,076 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 22:33:12,076 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-19 22:33:12,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 22:33:12,077 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 22:33:12,077 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 22:33:12,078 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-19 22:33:12,078 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-19 22:33:12,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-19 22:33:12,078 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-19 22:33:12,079 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_0233d817-c5e7-47d2-a98d-e2479f9fcfdc/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 -> 5f3104f8866991317081f2a037cd413a142d8b2f [2019-11-19 22:33:12,238 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 22:33:12,246 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 22:33:12,249 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 22:33:12,250 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 22:33:12,251 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 22:33:12,251 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0233d817-c5e7-47d2-a98d-e2479f9fcfdc/bin/uautomizer/../../sv-benchmarks/c/pthread/triangular-2.i [2019-11-19 22:33:12,304 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0233d817-c5e7-47d2-a98d-e2479f9fcfdc/bin/uautomizer/data/72c19a789/9780b1811f974d028203646c1b7520c7/FLAG2b9dce46c [2019-11-19 22:33:12,805 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 22:33:12,806 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0233d817-c5e7-47d2-a98d-e2479f9fcfdc/sv-benchmarks/c/pthread/triangular-2.i [2019-11-19 22:33:12,819 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0233d817-c5e7-47d2-a98d-e2479f9fcfdc/bin/uautomizer/data/72c19a789/9780b1811f974d028203646c1b7520c7/FLAG2b9dce46c [2019-11-19 22:33:13,269 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0233d817-c5e7-47d2-a98d-e2479f9fcfdc/bin/uautomizer/data/72c19a789/9780b1811f974d028203646c1b7520c7 [2019-11-19 22:33:13,273 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 22:33:13,274 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 22:33:13,275 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 22:33:13,275 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 22:33:13,278 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 22:33:13,279 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:33:13" (1/1) ... [2019-11-19 22:33:13,281 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@707d5de4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:33:13, skipping insertion in model container [2019-11-19 22:33:13,281 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:33:13" (1/1) ... [2019-11-19 22:33:13,288 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 22:33:13,331 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 22:33:13,702 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 22:33:13,713 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 22:33:13,769 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 22:33:13,854 INFO L192 MainTranslator]: Completed translation [2019-11-19 22:33:13,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:33:13 WrapperNode [2019-11-19 22:33:13,855 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 22:33:13,856 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 22:33:13,856 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 22:33:13,857 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 22:33:13,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:33:13" (1/1) ... [2019-11-19 22:33:13,899 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:33:13" (1/1) ... [2019-11-19 22:33:13,918 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 22:33:13,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 22:33:13,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 22:33:13,919 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 22:33:13,927 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:33:13" (1/1) ... [2019-11-19 22:33:13,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:33:13" (1/1) ... [2019-11-19 22:33:13,930 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:33:13" (1/1) ... [2019-11-19 22:33:13,930 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:33:13" (1/1) ... [2019-11-19 22:33:13,944 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:33:13" (1/1) ... [2019-11-19 22:33:13,947 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:33:13" (1/1) ... [2019-11-19 22:33:13,949 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:33:13" (1/1) ... [2019-11-19 22:33:13,952 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 22:33:13,952 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 22:33:13,952 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 22:33:13,952 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 22:33:13,953 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:33:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0233d817-c5e7-47d2-a98d-e2479f9fcfdc/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 22:33:14,022 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2019-11-19 22:33:14,023 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2019-11-19 22:33:14,023 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2019-11-19 22:33:14,023 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2019-11-19 22:33:14,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-19 22:33:14,025 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-11-19 22:33:14,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-19 22:33:14,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-19 22:33:14,025 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-11-19 22:33:14,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 22:33:14,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 22:33:14,030 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-19 22:33:14,376 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 22:33:14,377 INFO L285 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-19 22:33:14,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:33:14 BoogieIcfgContainer [2019-11-19 22:33:14,378 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 22:33:14,379 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-19 22:33:14,379 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-19 22:33:14,381 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-19 22:33:14,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 10:33:13" (1/3) ... [2019-11-19 22:33:14,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7afc53aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 10:33:14, skipping insertion in model container [2019-11-19 22:33:14,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:33:13" (2/3) ... [2019-11-19 22:33:14,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7afc53aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 10:33:14, skipping insertion in model container [2019-11-19 22:33:14,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:33:14" (3/3) ... [2019-11-19 22:33:14,384 INFO L109 eAbstractionObserver]: Analyzing ICFG triangular-2.i [2019-11-19 22:33:14,426 WARN L315 ript$VariableManager]: TermVariabe |t1Thread2of3ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,426 WARN L315 ript$VariableManager]: TermVariabe |t1Thread2of3ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,427 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,427 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,427 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork3_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,427 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork3_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,427 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork3_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,428 WARN L315 ript$VariableManager]: TermVariabe |t1Thread2of3ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,428 WARN L315 ript$VariableManager]: TermVariabe |t1Thread2of3ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,428 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork3_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,428 WARN L315 ript$VariableManager]: TermVariabe |t1Thread2of3ForFork3_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,428 WARN L315 ript$VariableManager]: TermVariabe |t1Thread2of3ForFork3_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,429 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork3_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,429 WARN L315 ript$VariableManager]: TermVariabe |t1Thread2of3ForFork3_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,429 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,429 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,429 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,429 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,430 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,430 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,430 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,430 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,431 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,431 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,431 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of3ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,431 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of3ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,431 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,432 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of3ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,432 WARN L315 ript$VariableManager]: TermVariabe |t1Thread3of3ForFork5_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,432 WARN L315 ript$VariableManager]: TermVariabe |t1Thread3of3ForFork5_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,432 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork5_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,432 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork5_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,433 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork5_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,433 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork5_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,433 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork5_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,433 WARN L315 ript$VariableManager]: TermVariabe |t1Thread3of3ForFork5_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,433 WARN L315 ript$VariableManager]: TermVariabe |t1Thread3of3ForFork5_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,433 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork5_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,434 WARN L315 ript$VariableManager]: TermVariabe |t1Thread3of3ForFork5_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,434 WARN L315 ript$VariableManager]: TermVariabe |t1Thread3of3ForFork5_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,434 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork5_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,434 WARN L315 ript$VariableManager]: TermVariabe |t1Thread3of3ForFork5_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,435 WARN L315 ript$VariableManager]: TermVariabe |t2Thread2of3ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,435 WARN L315 ript$VariableManager]: TermVariabe |t2Thread2of3ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,435 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,435 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,435 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,436 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,436 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,436 WARN L315 ript$VariableManager]: TermVariabe |t2Thread2of3ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,436 WARN L315 ript$VariableManager]: TermVariabe |t2Thread2of3ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,436 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,437 WARN L315 ript$VariableManager]: TermVariabe |t2Thread2of3ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,437 WARN L315 ript$VariableManager]: TermVariabe |t2Thread2of3ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,437 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,437 WARN L315 ript$VariableManager]: TermVariabe |t2Thread2of3ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,437 WARN L315 ript$VariableManager]: TermVariabe |t2Thread3of3ForFork4_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,438 WARN L315 ript$VariableManager]: TermVariabe |t2Thread3of3ForFork4_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,438 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork4_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,438 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork4_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,438 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork4_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,438 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork4_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,438 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork4_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,439 WARN L315 ript$VariableManager]: TermVariabe |t2Thread3of3ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,439 WARN L315 ript$VariableManager]: TermVariabe |t2Thread3of3ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,439 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork4_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,439 WARN L315 ript$VariableManager]: TermVariabe |t2Thread3of3ForFork4_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,439 WARN L315 ript$VariableManager]: TermVariabe |t2Thread3of3ForFork4_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,440 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork4_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,440 WARN L315 ript$VariableManager]: TermVariabe |t2Thread3of3ForFork4_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,440 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,440 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,440 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,441 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,441 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,449 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,450 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,450 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,450 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,450 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,451 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,451 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,452 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,452 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-19 22:33:14,477 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-19 22:33:14,478 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-19 22:33:14,485 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-19 22:33:14,495 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-19 22:33:14,513 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-19 22:33:14,513 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-19 22:33:14,513 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-19 22:33:14,513 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 22:33:14,513 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 22:33:14,513 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-19 22:33:14,514 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 22:33:14,514 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-19 22:33:14,524 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 95 places, 93 transitions [2019-11-19 22:33:15,264 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 8843 states. [2019-11-19 22:33:15,266 INFO L276 IsEmpty]: Start isEmpty. Operand 8843 states. [2019-11-19 22:33:15,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-19 22:33:15,286 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:33:15,289 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:33:15,290 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 22:33:15,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:33:15,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1140660711, now seen corresponding path program 1 times [2019-11-19 22:33:15,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:33:15,305 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231627528] [2019-11-19 22:33:15,306 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:33:15,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:33:15,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:33:15,733 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231627528] [2019-11-19 22:33:15,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:33:15,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-19 22:33:15,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342513855] [2019-11-19 22:33:15,738 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-19 22:33:15,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:33:15,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-19 22:33:15,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-19 22:33:15,754 INFO L87 Difference]: Start difference. First operand 8843 states. Second operand 5 states. [2019-11-19 22:33:16,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:33:16,203 INFO L93 Difference]: Finished difference Result 15656 states and 45634 transitions. [2019-11-19 22:33:16,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-19 22:33:16,205 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-11-19 22:33:16,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:33:16,269 INFO L225 Difference]: With dead ends: 15656 [2019-11-19 22:33:16,269 INFO L226 Difference]: Without dead ends: 4154 [2019-11-19 22:33:16,271 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-19 22:33:16,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4154 states. [2019-11-19 22:33:16,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4154 to 3146. [2019-11-19 22:33:16,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3146 states. [2019-11-19 22:33:16,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3146 states to 3146 states and 8437 transitions. [2019-11-19 22:33:16,497 INFO L78 Accepts]: Start accepts. Automaton has 3146 states and 8437 transitions. Word has length 20 [2019-11-19 22:33:16,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:33:16,498 INFO L462 AbstractCegarLoop]: Abstraction has 3146 states and 8437 transitions. [2019-11-19 22:33:16,499 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-19 22:33:16,499 INFO L276 IsEmpty]: Start isEmpty. Operand 3146 states and 8437 transitions. [2019-11-19 22:33:16,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-19 22:33:16,502 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:33:16,502 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:33:16,502 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 22:33:16,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:33:16,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1489054159, now seen corresponding path program 1 times [2019-11-19 22:33:16,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:33:16,503 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406494181] [2019-11-19 22:33:16,503 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:33:16,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:33:16,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:33:16,612 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406494181] [2019-11-19 22:33:16,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:33:16,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-19 22:33:16,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355387271] [2019-11-19 22:33:16,613 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-19 22:33:16,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:33:16,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-19 22:33:16,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-19 22:33:16,614 INFO L87 Difference]: Start difference. First operand 3146 states and 8437 transitions. Second operand 5 states. [2019-11-19 22:33:16,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:33:16,745 INFO L93 Difference]: Finished difference Result 3839 states and 9823 transitions. [2019-11-19 22:33:16,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-19 22:33:16,745 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2019-11-19 22:33:16,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:33:16,764 INFO L225 Difference]: With dead ends: 3839 [2019-11-19 22:33:16,765 INFO L226 Difference]: Without dead ends: 2750 [2019-11-19 22:33:16,765 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-19 22:33:16,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2750 states. [2019-11-19 22:33:16,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2750 to 2606. [2019-11-19 22:33:16,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2606 states. [2019-11-19 22:33:16,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2606 states to 2606 states and 6955 transitions. [2019-11-19 22:33:16,845 INFO L78 Accepts]: Start accepts. Automaton has 2606 states and 6955 transitions. Word has length 23 [2019-11-19 22:33:16,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:33:16,845 INFO L462 AbstractCegarLoop]: Abstraction has 2606 states and 6955 transitions. [2019-11-19 22:33:16,845 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-19 22:33:16,846 INFO L276 IsEmpty]: Start isEmpty. Operand 2606 states and 6955 transitions. [2019-11-19 22:33:16,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-19 22:33:16,847 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:33:16,847 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:33:16,847 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 22:33:16,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:33:16,848 INFO L82 PathProgramCache]: Analyzing trace with hash 913376083, now seen corresponding path program 1 times [2019-11-19 22:33:16,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:33:16,848 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278154864] [2019-11-19 22:33:16,848 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:33:16,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:33:16,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:33:16,957 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278154864] [2019-11-19 22:33:16,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:33:16,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-19 22:33:16,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206775610] [2019-11-19 22:33:16,958 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-19 22:33:16,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:33:16,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-19 22:33:16,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-19 22:33:16,959 INFO L87 Difference]: Start difference. First operand 2606 states and 6955 transitions. Second operand 5 states. [2019-11-19 22:33:17,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:33:17,114 INFO L93 Difference]: Finished difference Result 3443 states and 8653 transitions. [2019-11-19 22:33:17,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-19 22:33:17,115 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2019-11-19 22:33:17,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:33:17,131 INFO L225 Difference]: With dead ends: 3443 [2019-11-19 22:33:17,131 INFO L226 Difference]: Without dead ends: 2327 [2019-11-19 22:33:17,132 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-19 22:33:17,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2327 states. [2019-11-19 22:33:17,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2327 to 2327. [2019-11-19 22:33:17,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2327 states. [2019-11-19 22:33:17,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2327 states to 2327 states and 6025 transitions. [2019-11-19 22:33:17,218 INFO L78 Accepts]: Start accepts. Automaton has 2327 states and 6025 transitions. Word has length 23 [2019-11-19 22:33:17,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:33:17,219 INFO L462 AbstractCegarLoop]: Abstraction has 2327 states and 6025 transitions. [2019-11-19 22:33:17,219 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-19 22:33:17,219 INFO L276 IsEmpty]: Start isEmpty. Operand 2327 states and 6025 transitions. [2019-11-19 22:33:17,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-19 22:33:17,221 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:33:17,222 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:33:17,222 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 22:33:17,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:33:17,222 INFO L82 PathProgramCache]: Analyzing trace with hash 597396229, now seen corresponding path program 1 times [2019-11-19 22:33:17,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:33:17,223 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170522057] [2019-11-19 22:33:17,223 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:33:17,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:33:17,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:33:17,357 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170522057] [2019-11-19 22:33:17,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:33:17,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-19 22:33:17,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512111350] [2019-11-19 22:33:17,358 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-19 22:33:17,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:33:17,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-19 22:33:17,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-19 22:33:17,358 INFO L87 Difference]: Start difference. First operand 2327 states and 6025 transitions. Second operand 6 states. [2019-11-19 22:33:17,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:33:17,564 INFO L93 Difference]: Finished difference Result 3650 states and 9112 transitions. [2019-11-19 22:33:17,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-19 22:33:17,565 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2019-11-19 22:33:17,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:33:17,581 INFO L225 Difference]: With dead ends: 3650 [2019-11-19 22:33:17,581 INFO L226 Difference]: Without dead ends: 2498 [2019-11-19 22:33:17,583 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-11-19 22:33:17,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2498 states. [2019-11-19 22:33:17,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2498 to 2408. [2019-11-19 22:33:17,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2408 states. [2019-11-19 22:33:17,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2408 states to 2408 states and 6187 transitions. [2019-11-19 22:33:17,727 INFO L78 Accepts]: Start accepts. Automaton has 2408 states and 6187 transitions. Word has length 26 [2019-11-19 22:33:17,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:33:17,728 INFO L462 AbstractCegarLoop]: Abstraction has 2408 states and 6187 transitions. [2019-11-19 22:33:17,728 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-19 22:33:17,728 INFO L276 IsEmpty]: Start isEmpty. Operand 2408 states and 6187 transitions. [2019-11-19 22:33:17,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-19 22:33:17,730 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:33:17,730 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:33:17,730 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 22:33:17,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:33:17,731 INFO L82 PathProgramCache]: Analyzing trace with hash 570584329, now seen corresponding path program 2 times [2019-11-19 22:33:17,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:33:17,731 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596679827] [2019-11-19 22:33:17,731 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:33:17,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:33:17,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:33:17,846 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596679827] [2019-11-19 22:33:17,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:33:17,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-19 22:33:17,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688575675] [2019-11-19 22:33:17,847 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-19 22:33:17,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:33:17,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-19 22:33:17,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-19 22:33:17,847 INFO L87 Difference]: Start difference. First operand 2408 states and 6187 transitions. Second operand 6 states. [2019-11-19 22:33:18,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:33:18,014 INFO L93 Difference]: Finished difference Result 3821 states and 9454 transitions. [2019-11-19 22:33:18,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-19 22:33:18,014 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2019-11-19 22:33:18,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:33:18,031 INFO L225 Difference]: With dead ends: 3821 [2019-11-19 22:33:18,032 INFO L226 Difference]: Without dead ends: 2642 [2019-11-19 22:33:18,032 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-11-19 22:33:18,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2642 states. [2019-11-19 22:33:18,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2642 to 2642. [2019-11-19 22:33:18,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2642 states. [2019-11-19 22:33:18,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2642 states to 2642 states and 6637 transitions. [2019-11-19 22:33:18,101 INFO L78 Accepts]: Start accepts. Automaton has 2642 states and 6637 transitions. Word has length 26 [2019-11-19 22:33:18,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:33:18,101 INFO L462 AbstractCegarLoop]: Abstraction has 2642 states and 6637 transitions. [2019-11-19 22:33:18,101 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-19 22:33:18,101 INFO L276 IsEmpty]: Start isEmpty. Operand 2642 states and 6637 transitions. [2019-11-19 22:33:18,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-19 22:33:18,104 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:33:18,104 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-19 22:33:18,104 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 22:33:18,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:33:18,105 INFO L82 PathProgramCache]: Analyzing trace with hash 1640032678, now seen corresponding path program 1 times [2019-11-19 22:33:18,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:33:18,105 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220762400] [2019-11-19 22:33:18,106 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:33:18,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:33:18,210 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:33:18,210 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220762400] [2019-11-19 22:33:18,210 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702910670] [2019-11-19 22:33:18,210 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0233d817-c5e7-47d2-a98d-e2479f9fcfdc/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 [2019-11-19 22:33:18,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:33:18,285 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-19 22:33:18,290 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:33:18,331 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:33:18,337 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:33:18,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:33:18,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:33:18,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2019-11-19 22:33:18,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682915334] [2019-11-19 22:33:18,349 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-19 22:33:18,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:33:18,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-19 22:33:18,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-19 22:33:18,350 INFO L87 Difference]: Start difference. First operand 2642 states and 6637 transitions. Second operand 8 states. [2019-11-19 22:33:18,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:33:18,605 INFO L93 Difference]: Finished difference Result 4847 states and 11929 transitions. [2019-11-19 22:33:18,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-19 22:33:18,606 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2019-11-19 22:33:18,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:33:18,626 INFO L225 Difference]: With dead ends: 4847 [2019-11-19 22:33:18,626 INFO L226 Difference]: Without dead ends: 3146 [2019-11-19 22:33:18,627 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2019-11-19 22:33:18,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3146 states. [2019-11-19 22:33:18,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3146 to 3038. [2019-11-19 22:33:18,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3038 states. [2019-11-19 22:33:18,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3038 states to 3038 states and 7465 transitions. [2019-11-19 22:33:18,705 INFO L78 Accepts]: Start accepts. Automaton has 3038 states and 7465 transitions. Word has length 30 [2019-11-19 22:33:18,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:33:18,705 INFO L462 AbstractCegarLoop]: Abstraction has 3038 states and 7465 transitions. [2019-11-19 22:33:18,705 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-19 22:33:18,705 INFO L276 IsEmpty]: Start isEmpty. Operand 3038 states and 7465 transitions. [2019-11-19 22:33:18,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-19 22:33:18,708 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:33:18,708 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-19 22:33:18,913 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:33:18,914 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 22:33:18,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:33:18,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1891987234, now seen corresponding path program 1 times [2019-11-19 22:33:18,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:33:18,914 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620812289] [2019-11-19 22:33:18,915 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:33:18,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:33:19,042 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:33:19,043 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620812289] [2019-11-19 22:33:19,043 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649270207] [2019-11-19 22:33:19,043 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0233d817-c5e7-47d2-a98d-e2479f9fcfdc/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 [2019-11-19 22:33:19,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:33:19,110 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-19 22:33:19,112 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:33:19,140 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:33:19,141 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:33:19,143 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:33:19,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:33:19,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:33:19,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2019-11-19 22:33:19,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044899127] [2019-11-19 22:33:19,146 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-19 22:33:19,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:33:19,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-19 22:33:19,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-19 22:33:19,147 INFO L87 Difference]: Start difference. First operand 3038 states and 7465 transitions. Second operand 8 states. [2019-11-19 22:33:19,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:33:19,350 INFO L93 Difference]: Finished difference Result 5603 states and 13441 transitions. [2019-11-19 22:33:19,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-19 22:33:19,351 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2019-11-19 22:33:19,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:33:19,364 INFO L225 Difference]: With dead ends: 5603 [2019-11-19 22:33:19,364 INFO L226 Difference]: Without dead ends: 3902 [2019-11-19 22:33:19,365 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-11-19 22:33:19,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3902 states. [2019-11-19 22:33:19,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3902 to 3290. [2019-11-19 22:33:19,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3290 states. [2019-11-19 22:33:19,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3290 states to 3290 states and 7933 transitions. [2019-11-19 22:33:19,468 INFO L78 Accepts]: Start accepts. Automaton has 3290 states and 7933 transitions. Word has length 30 [2019-11-19 22:33:19,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:33:19,469 INFO L462 AbstractCegarLoop]: Abstraction has 3290 states and 7933 transitions. [2019-11-19 22:33:19,469 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-19 22:33:19,469 INFO L276 IsEmpty]: Start isEmpty. Operand 3290 states and 7933 transitions. [2019-11-19 22:33:19,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-19 22:33:19,475 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:33:19,475 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 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, 1, 1, 1, 1] [2019-11-19 22:33:19,681 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:33:19,681 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 22:33:19,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:33:19,682 INFO L82 PathProgramCache]: Analyzing trace with hash 913049312, now seen corresponding path program 1 times [2019-11-19 22:33:19,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:33:19,682 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749472706] [2019-11-19 22:33:19,682 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:33:19,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:33:19,838 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:33:19,839 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749472706] [2019-11-19 22:33:19,839 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557683342] [2019-11-19 22:33:19,839 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0233d817-c5e7-47d2-a98d-e2479f9fcfdc/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 [2019-11-19 22:33:19,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:33:19,917 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-19 22:33:19,919 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:33:19,946 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:33:19,947 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:33:19,951 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:33:19,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:33:19,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2019-11-19 22:33:19,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677083428] [2019-11-19 22:33:19,952 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-19 22:33:19,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:33:19,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-19 22:33:19,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-11-19 22:33:19,953 INFO L87 Difference]: Start difference. First operand 3290 states and 7933 transitions. Second operand 10 states. [2019-11-19 22:33:20,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:33:20,390 INFO L93 Difference]: Finished difference Result 6737 states and 16150 transitions. [2019-11-19 22:33:20,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-19 22:33:20,390 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 38 [2019-11-19 22:33:20,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:33:20,399 INFO L225 Difference]: With dead ends: 6737 [2019-11-19 22:33:20,399 INFO L226 Difference]: Without dead ends: 3866 [2019-11-19 22:33:20,400 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2019-11-19 22:33:20,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3866 states. [2019-11-19 22:33:20,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3866 to 3614. [2019-11-19 22:33:20,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3614 states. [2019-11-19 22:33:20,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3614 states to 3614 states and 8617 transitions. [2019-11-19 22:33:20,492 INFO L78 Accepts]: Start accepts. Automaton has 3614 states and 8617 transitions. Word has length 38 [2019-11-19 22:33:20,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:33:20,493 INFO L462 AbstractCegarLoop]: Abstraction has 3614 states and 8617 transitions. [2019-11-19 22:33:20,493 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-19 22:33:20,494 INFO L276 IsEmpty]: Start isEmpty. Operand 3614 states and 8617 transitions. [2019-11-19 22:33:20,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-19 22:33:20,498 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:33:20,498 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 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, 1, 1, 1, 1] [2019-11-19 22:33:20,701 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:33:20,701 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 22:33:20,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:33:20,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1347472476, now seen corresponding path program 2 times [2019-11-19 22:33:20,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:33:20,702 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918158697] [2019-11-19 22:33:20,703 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:33:20,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:33:20,786 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:33:20,786 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918158697] [2019-11-19 22:33:20,786 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292189400] [2019-11-19 22:33:20,786 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0233d817-c5e7-47d2-a98d-e2479f9fcfdc/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 [2019-11-19 22:33:20,862 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-19 22:33:20,862 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 22:33:20,863 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-19 22:33:20,866 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:33:20,892 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:33:20,892 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:33:20,893 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:33:20,896 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:33:20,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:33:20,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2019-11-19 22:33:20,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268608610] [2019-11-19 22:33:20,896 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-19 22:33:20,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:33:20,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-19 22:33:20,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2019-11-19 22:33:20,897 INFO L87 Difference]: Start difference. First operand 3614 states and 8617 transitions. Second operand 10 states. [2019-11-19 22:33:21,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:33:21,340 INFO L93 Difference]: Finished difference Result 5927 states and 14089 transitions. [2019-11-19 22:33:21,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-19 22:33:21,340 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 38 [2019-11-19 22:33:21,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:33:21,349 INFO L225 Difference]: With dead ends: 5927 [2019-11-19 22:33:21,349 INFO L226 Difference]: Without dead ends: 3794 [2019-11-19 22:33:21,350 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2019-11-19 22:33:21,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3794 states. [2019-11-19 22:33:21,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3794 to 2903. [2019-11-19 22:33:21,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2903 states. [2019-11-19 22:33:21,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2903 states to 2903 states and 7159 transitions. [2019-11-19 22:33:21,423 INFO L78 Accepts]: Start accepts. Automaton has 2903 states and 7159 transitions. Word has length 38 [2019-11-19 22:33:21,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:33:21,424 INFO L462 AbstractCegarLoop]: Abstraction has 2903 states and 7159 transitions. [2019-11-19 22:33:21,424 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-19 22:33:21,424 INFO L276 IsEmpty]: Start isEmpty. Operand 2903 states and 7159 transitions. [2019-11-19 22:33:21,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-11-19 22:33:21,428 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:33:21,428 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 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, 1] [2019-11-19 22:33:21,631 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:33:21,631 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 22:33:21,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:33:21,632 INFO L82 PathProgramCache]: Analyzing trace with hash -994596995, now seen corresponding path program 3 times [2019-11-19 22:33:21,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:33:21,632 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447426464] [2019-11-19 22:33:21,632 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:33:21,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:33:21,767 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:33:21,767 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447426464] [2019-11-19 22:33:21,767 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59929260] [2019-11-19 22:33:21,767 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0233d817-c5e7-47d2-a98d-e2479f9fcfdc/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 [2019-11-19 22:33:21,833 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-19 22:33:21,833 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 22:33:21,834 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-19 22:33:21,837 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:33:21,872 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:33:21,873 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:33:21,876 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:33:21,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:33:21,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2019-11-19 22:33:21,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697276616] [2019-11-19 22:33:21,878 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-19 22:33:21,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:33:21,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-19 22:33:21,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-11-19 22:33:21,879 INFO L87 Difference]: Start difference. First operand 2903 states and 7159 transitions. Second operand 11 states. [2019-11-19 22:33:22,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:33:22,254 INFO L93 Difference]: Finished difference Result 6107 states and 14449 transitions. [2019-11-19 22:33:22,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-19 22:33:22,254 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 42 [2019-11-19 22:33:22,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:33:22,266 INFO L225 Difference]: With dead ends: 6107 [2019-11-19 22:33:22,266 INFO L226 Difference]: Without dead ends: 4406 [2019-11-19 22:33:22,267 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2019-11-19 22:33:22,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4406 states. [2019-11-19 22:33:22,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4406 to 4046. [2019-11-19 22:33:22,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4046 states. [2019-11-19 22:33:22,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4046 states to 4046 states and 9481 transitions. [2019-11-19 22:33:22,412 INFO L78 Accepts]: Start accepts. Automaton has 4046 states and 9481 transitions. Word has length 42 [2019-11-19 22:33:22,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:33:22,413 INFO L462 AbstractCegarLoop]: Abstraction has 4046 states and 9481 transitions. [2019-11-19 22:33:22,413 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-19 22:33:22,413 INFO L276 IsEmpty]: Start isEmpty. Operand 4046 states and 9481 transitions. [2019-11-19 22:33:22,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-11-19 22:33:22,418 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:33:22,418 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 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, 1] [2019-11-19 22:33:22,621 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:33:22,621 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 22:33:22,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:33:22,622 INFO L82 PathProgramCache]: Analyzing trace with hash -2010428902, now seen corresponding path program 4 times [2019-11-19 22:33:22,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:33:22,622 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100501605] [2019-11-19 22:33:22,622 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:33:22,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:33:22,742 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:33:22,742 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100501605] [2019-11-19 22:33:22,742 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347468665] [2019-11-19 22:33:22,742 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0233d817-c5e7-47d2-a98d-e2479f9fcfdc/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 [2019-11-19 22:33:22,806 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-19 22:33:22,806 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 22:33:22,807 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-19 22:33:22,809 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:33:22,827 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:33:22,828 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:33:22,832 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:33:22,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:33:22,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2019-11-19 22:33:22,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493196330] [2019-11-19 22:33:22,833 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-19 22:33:22,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:33:22,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-19 22:33:22,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2019-11-19 22:33:22,834 INFO L87 Difference]: Start difference. First operand 4046 states and 9481 transitions. Second operand 12 states. [2019-11-19 22:33:23,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:33:23,215 INFO L93 Difference]: Finished difference Result 6503 states and 15241 transitions. [2019-11-19 22:33:23,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-19 22:33:23,216 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 46 [2019-11-19 22:33:23,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:33:23,223 INFO L225 Difference]: With dead ends: 6503 [2019-11-19 22:33:23,223 INFO L226 Difference]: Without dead ends: 4802 [2019-11-19 22:33:23,224 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2019-11-19 22:33:23,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4802 states. [2019-11-19 22:33:23,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4802 to 3407. [2019-11-19 22:33:23,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3407 states. [2019-11-19 22:33:23,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3407 states to 3407 states and 8167 transitions. [2019-11-19 22:33:23,295 INFO L78 Accepts]: Start accepts. Automaton has 3407 states and 8167 transitions. Word has length 46 [2019-11-19 22:33:23,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:33:23,295 INFO L462 AbstractCegarLoop]: Abstraction has 3407 states and 8167 transitions. [2019-11-19 22:33:23,296 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-19 22:33:23,296 INFO L276 IsEmpty]: Start isEmpty. Operand 3407 states and 8167 transitions. [2019-11-19 22:33:23,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-11-19 22:33:23,300 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:33:23,300 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:33:23,504 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:33:23,512 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 22:33:23,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:33:23,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1322188215, now seen corresponding path program 5 times [2019-11-19 22:33:23,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:33:23,512 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958954676] [2019-11-19 22:33:23,512 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:33:23,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:33:23,663 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:33:23,663 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958954676] [2019-11-19 22:33:23,663 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165028545] [2019-11-19 22:33:23,663 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0233d817-c5e7-47d2-a98d-e2479f9fcfdc/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 [2019-11-19 22:33:23,742 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-11-19 22:33:23,742 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 22:33:23,743 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-19 22:33:23,752 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:33:23,774 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:33:23,775 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:33:23,779 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:33:23,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:33:23,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2019-11-19 22:33:23,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776446116] [2019-11-19 22:33:23,780 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-19 22:33:23,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:33:23,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-19 22:33:23,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2019-11-19 22:33:23,780 INFO L87 Difference]: Start difference. First operand 3407 states and 8167 transitions. Second operand 13 states. [2019-11-19 22:33:24,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:33:24,181 INFO L93 Difference]: Finished difference Result 7745 states and 18166 transitions. [2019-11-19 22:33:24,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-19 22:33:24,181 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 50 [2019-11-19 22:33:24,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:33:24,189 INFO L225 Difference]: With dead ends: 7745 [2019-11-19 22:33:24,190 INFO L226 Difference]: Without dead ends: 4658 [2019-11-19 22:33:24,190 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=154, Invalid=398, Unknown=0, NotChecked=0, Total=552 [2019-11-19 22:33:24,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4658 states. [2019-11-19 22:33:24,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4658 to 3326. [2019-11-19 22:33:24,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3326 states. [2019-11-19 22:33:24,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3326 states to 3326 states and 7999 transitions. [2019-11-19 22:33:24,264 INFO L78 Accepts]: Start accepts. Automaton has 3326 states and 7999 transitions. Word has length 50 [2019-11-19 22:33:24,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:33:24,265 INFO L462 AbstractCegarLoop]: Abstraction has 3326 states and 7999 transitions. [2019-11-19 22:33:24,265 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-19 22:33:24,265 INFO L276 IsEmpty]: Start isEmpty. Operand 3326 states and 7999 transitions. [2019-11-19 22:33:24,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-11-19 22:33:24,269 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:33:24,269 INFO L410 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:33:24,473 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:33:24,474 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 22:33:24,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:33:24,474 INFO L82 PathProgramCache]: Analyzing trace with hash 729330516, now seen corresponding path program 6 times [2019-11-19 22:33:24,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:33:24,474 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848315117] [2019-11-19 22:33:24,475 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:33:24,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:33:24,653 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:33:24,653 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848315117] [2019-11-19 22:33:24,653 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871861422] [2019-11-19 22:33:24,654 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0233d817-c5e7-47d2-a98d-e2479f9fcfdc/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 [2019-11-19 22:33:24,718 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-11-19 22:33:24,718 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 22:33:24,719 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-19 22:33:24,720 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:33:24,743 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:33:24,744 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:33:24,748 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:33:24,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:33:24,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2019-11-19 22:33:24,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435585833] [2019-11-19 22:33:24,749 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-19 22:33:24,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:33:24,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-19 22:33:24,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2019-11-19 22:33:24,749 INFO L87 Difference]: Start difference. First operand 3326 states and 7999 transitions. Second operand 14 states. [2019-11-19 22:33:25,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:33:25,196 INFO L93 Difference]: Finished difference Result 6863 states and 15961 transitions. [2019-11-19 22:33:25,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-19 22:33:25,197 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 54 [2019-11-19 22:33:25,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:33:25,205 INFO L225 Difference]: With dead ends: 6863 [2019-11-19 22:33:25,205 INFO L226 Difference]: Without dead ends: 5162 [2019-11-19 22:33:25,205 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=430, Unknown=0, NotChecked=0, Total=600 [2019-11-19 22:33:25,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5162 states. [2019-11-19 22:33:25,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5162 to 4910. [2019-11-19 22:33:25,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4910 states. [2019-11-19 22:33:25,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4910 states to 4910 states and 11209 transitions. [2019-11-19 22:33:25,285 INFO L78 Accepts]: Start accepts. Automaton has 4910 states and 11209 transitions. Word has length 54 [2019-11-19 22:33:25,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:33:25,286 INFO L462 AbstractCegarLoop]: Abstraction has 4910 states and 11209 transitions. [2019-11-19 22:33:25,286 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-19 22:33:25,286 INFO L276 IsEmpty]: Start isEmpty. Operand 4910 states and 11209 transitions. [2019-11-19 22:33:25,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-11-19 22:33:25,293 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:33:25,293 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:33:25,496 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:33:25,496 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 22:33:25,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:33:25,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1722907121, now seen corresponding path program 7 times [2019-11-19 22:33:25,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:33:25,497 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455087130] [2019-11-19 22:33:25,497 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:33:25,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:33:25,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:33:25,576 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 22:33:25,576 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-19 22:33:25,663 INFO L304 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-19 22:33:25,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 10:33:25 BasicIcfg [2019-11-19 22:33:25,669 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-19 22:33:25,669 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 22:33:25,669 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 22:33:25,670 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 22:33:25,670 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:33:14" (3/4) ... [2019-11-19 22:33:25,672 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-19 22:33:25,787 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_0233d817-c5e7-47d2-a98d-e2479f9fcfdc/bin/uautomizer/witness.graphml [2019-11-19 22:33:25,788 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 22:33:25,791 INFO L168 Benchmark]: Toolchain (without parser) took 12515.99 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 363.3 MB). Free memory was 939.3 MB in the beginning and 1.2 GB in the end (delta: -276.1 MB). Peak memory consumption was 87.2 MB. Max. memory is 11.5 GB. [2019-11-19 22:33:25,791 INFO L168 Benchmark]: CDTParser took 0.17 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. [2019-11-19 22:33:25,792 INFO L168 Benchmark]: CACSL2BoogieTranslator took 580.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 188.2 MB). Free memory was 939.3 MB in the beginning and 1.2 GB in the end (delta: -220.7 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2019-11-19 22:33:25,792 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.46 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-19 22:33:25,794 INFO L168 Benchmark]: Boogie Preprocessor took 33.00 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 22:33:25,795 INFO L168 Benchmark]: RCFGBuilder took 425.95 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2019-11-19 22:33:25,795 INFO L168 Benchmark]: TraceAbstraction took 11290.25 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 175.1 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -103.0 MB). Peak memory consumption was 72.1 MB. Max. memory is 11.5 GB. [2019-11-19 22:33:25,796 INFO L168 Benchmark]: Witness Printer took 119.36 ms. Allocated memory is still 1.4 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. [2019-11-19 22:33:25,798 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 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 580.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 188.2 MB). Free memory was 939.3 MB in the beginning and 1.2 GB in the end (delta: -220.7 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 62.46 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 33.00 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 425.95 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 11290.25 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 175.1 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -103.0 MB). Peak memory consumption was 72.1 MB. Max. memory is 11.5 GB. * Witness Printer took 119.36 ms. Allocated memory is still 1.4 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 703]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L675] 0 int i = 3, j = 6; VAL [i=3, j=6] [L693] 0 pthread_t id1, id2; VAL [i=3, j=6] [L694] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [arg={0:0}, i=3, j=6] [L677] 1 int k = 0; VAL [arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L695] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L685] 2 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L677] COND TRUE 1 k < 5 [L679] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=0] [L677] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=1, k=0] [L685] COND TRUE 2 k < 5 [L687] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=0] [L685] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L677] COND TRUE 1 k < 5 [L679] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=1] [L677] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L685] COND TRUE 2 k < 5 [L687] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=1] [L685] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L677] COND TRUE 1 k < 5 [L679] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=2] [L677] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=3, k=2] [L685] COND TRUE 2 k < 5 [L687] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=2] [L685] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L677] COND TRUE 1 k < 5 [L679] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=3] [L677] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L685] COND TRUE 2 k < 5 [L687] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=3] [L685] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L677] COND TRUE 1 k < 5 [L679] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=4] [L685] COND TRUE 2 k < 5 [L687] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=4] [L697] 0 int condI = i >= (2*5 +6); [L700] 0 int condJ = j >= (2*5 +6); VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=4] [L702] COND TRUE 0 condI || condJ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=4] [L703] 0 __VERIFIER_error() VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=4] - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 101 locations, 1 error locations. Result: UNSAFE, OverallTime: 11.1s, OverallIterations: 14, TraceHistogramMax: 5, AutomataDifference: 4.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 1737 SDtfs, 5942 SDslu, 7487 SDs, 0 SdLazy, 1492 SolverSat, 884 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 500 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8843occurred 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: 1.3s AutomataMinimizationTime, 13 MinimizatonAttempts, 6444 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 832 NumberOfCodeBlocks, 832 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 753 ConstructedInterpolants, 0 QuantifiedInterpolants, 88587 SizeOfPredicates, 70 NumberOfNonLiveVariables, 888 ConjunctsInSsa, 95 ConjunctsInUnsatCore, 21 InterpolantComputations, 5 PerfectInterpolantSequences, 0/244 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 incorrect! Received shutdown request...