./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_ground-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_5eecd702-4937-4e26-962c-8bd6020ba151/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_5eecd702-4937-4e26-962c-8bd6020ba151/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_5eecd702-4937-4e26-962c-8bd6020ba151/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_5eecd702-4937-4e26-962c-8bd6020ba151/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_ground-2.i -s /tmp/vcloud-vcloud-master/worker/working_dir_5eecd702-4937-4e26-962c-8bd6020ba151/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_5eecd702-4937-4e26-962c-8bd6020ba151/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 08759f15decf079626360375bcbe361f0d9f1187 ............................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_5eecd702-4937-4e26-962c-8bd6020ba151/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_5eecd702-4937-4e26-962c-8bd6020ba151/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_5eecd702-4937-4e26-962c-8bd6020ba151/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_5eecd702-4937-4e26-962c-8bd6020ba151/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_ground-2.i -s /tmp/vcloud-vcloud-master/worker/working_dir_5eecd702-4937-4e26-962c-8bd6020ba151/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_5eecd702-4937-4e26-962c-8bd6020ba151/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 08759f15decf079626360375bcbe361f0d9f1187 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: IllegalStateException: Do not try to interpolate when trace is feasible --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 11:25:56,007 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:25:56,008 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:25:56,023 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:25:56,024 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:25:56,025 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:25:56,026 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:25:56,028 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:25:56,031 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:25:56,032 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:25:56,034 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:25:56,035 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:25:56,041 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:25:56,043 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:25:56,044 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:25:56,044 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:25:56,045 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:25:56,046 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:25:56,047 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:25:56,051 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:25:56,054 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:25:56,056 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:25:56,058 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:25:56,059 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:25:56,061 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:25:56,061 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:25:56,061 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:25:56,062 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:25:56,062 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:25:56,063 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:25:56,065 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:25:56,066 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:25:56,066 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:25:56,067 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:25:56,068 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:25:56,068 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:25:56,069 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:25:56,069 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:25:56,070 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:25:56,070 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:25:56,073 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:25:56,074 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_5eecd702-4937-4e26-962c-8bd6020ba151/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:25:56,086 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:25:56,087 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:25:56,096 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:25:56,096 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:25:56,096 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:25:56,096 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:25:56,096 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:25:56,097 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:25:56,097 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:25:56,097 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:25:56,097 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:25:56,097 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:25:56,098 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:25:56,098 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:25:56,098 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:25:56,099 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:25:56,099 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:25:56,099 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:25:56,101 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:25:56,101 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:25:56,102 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:25:56,102 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:25:56,102 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:25:56,102 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:25:56,102 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:25:56,103 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:25:56,103 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:25:56,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:25:56,103 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:25:56,103 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:25:56,104 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:25:56,104 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:25:56,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:25:56,104 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:25:56,104 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:25:56,104 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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/working_dir_5eecd702-4937-4e26-962c-8bd6020ba151/bin/utaipan 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 -> Taipan 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 -> 08759f15decf079626360375bcbe361f0d9f1187 [2019-10-22 11:25:56,141 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:25:56,152 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:25:56,155 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:25:56,156 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:25:56,156 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:25:56,157 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_5eecd702-4937-4e26-962c-8bd6020ba151/bin/utaipan/../../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_ground-2.i [2019-10-22 11:25:56,203 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5eecd702-4937-4e26-962c-8bd6020ba151/bin/utaipan/data/8069c60ee/40a2eb43ee994f26947808354a2b34c9/FLAG24840bcea [2019-10-22 11:25:56,603 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:25:56,604 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_5eecd702-4937-4e26-962c-8bd6020ba151/sv-benchmarks/c/array-examples/data_structures_set_multi_proc_ground-2.i [2019-10-22 11:25:56,609 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5eecd702-4937-4e26-962c-8bd6020ba151/bin/utaipan/data/8069c60ee/40a2eb43ee994f26947808354a2b34c9/FLAG24840bcea [2019-10-22 11:25:56,620 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_5eecd702-4937-4e26-962c-8bd6020ba151/bin/utaipan/data/8069c60ee/40a2eb43ee994f26947808354a2b34c9 [2019-10-22 11:25:56,622 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:25:56,623 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:25:56,624 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:25:56,624 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:25:56,628 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:25:56,629 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:25:56" (1/1) ... [2019-10-22 11:25:56,631 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3615377b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:56, skipping insertion in model container [2019-10-22 11:25:56,632 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:25:56" (1/1) ... [2019-10-22 11:25:56,639 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:25:56,656 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:25:56,826 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:25:56,907 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:25:56,929 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:25:56,945 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:25:56,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:56 WrapperNode [2019-10-22 11:25:56,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:25:56,946 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:25:56,946 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:25:56,946 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:25:56,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:56" (1/1) ... [2019-10-22 11:25:56,968 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:56" (1/1) ... [2019-10-22 11:25:56,987 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:25:56,988 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:25:56,988 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:25:56,988 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:25:56,996 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:56" (1/1) ... [2019-10-22 11:25:56,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:56" (1/1) ... [2019-10-22 11:25:56,998 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:56" (1/1) ... [2019-10-22 11:25:56,999 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:56" (1/1) ... [2019-10-22 11:25:57,005 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:56" (1/1) ... [2019-10-22 11:25:57,011 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:56" (1/1) ... [2019-10-22 11:25:57,012 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:56" (1/1) ... [2019-10-22 11:25:57,017 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:25:57,017 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:25:57,018 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:25:57,018 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:25:57,018 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:56" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5eecd702-4937-4e26-962c-8bd6020ba151/bin/utaipan/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 [2019-10-22 11:25:57,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 11:25:57,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:25:57,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:25:57,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 11:25:57,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:25:57,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 11:25:57,322 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:25:57,322 INFO L284 CfgBuilder]: Removed 20 assume(true) statements. [2019-10-22 11:25:57,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:57 BoogieIcfgContainer [2019-10-22 11:25:57,323 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:25:57,324 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:25:57,324 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:25:57,327 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:25:57,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:25:56" (1/3) ... [2019-10-22 11:25:57,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64de890 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:25:57, skipping insertion in model container [2019-10-22 11:25:57,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:56" (2/3) ... [2019-10-22 11:25:57,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64de890 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:25:57, skipping insertion in model container [2019-10-22 11:25:57,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:57" (3/3) ... [2019-10-22 11:25:57,330 INFO L109 eAbstractionObserver]: Analyzing ICFG data_structures_set_multi_proc_ground-2.i [2019-10-22 11:25:57,339 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:25:57,346 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-10-22 11:25:57,356 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-10-22 11:25:57,400 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:25:57,401 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:25:57,401 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:25:57,401 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:25:57,401 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:25:57,401 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:25:57,401 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:25:57,401 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:25:57,416 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2019-10-22 11:25:57,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-10-22 11:25:57,422 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:57,424 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:25:57,426 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:57,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:57,432 INFO L82 PathProgramCache]: Analyzing trace with hash 212109301, now seen corresponding path program 1 times [2019-10-22 11:25:57,441 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:57,442 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982087653] [2019-10-22 11:25:57,442 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:57,442 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:57,442 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:57,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:57,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:57,610 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982087653] [2019-10-22 11:25:57,611 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:57,612 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:25:57,613 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307926764] [2019-10-22 11:25:57,617 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:25:57,618 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:57,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:25:57,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:25:57,629 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 3 states. [2019-10-22 11:25:57,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:57,722 INFO L93 Difference]: Finished difference Result 110 states and 165 transitions. [2019-10-22 11:25:57,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:25:57,724 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-10-22 11:25:57,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:57,733 INFO L225 Difference]: With dead ends: 110 [2019-10-22 11:25:57,733 INFO L226 Difference]: Without dead ends: 67 [2019-10-22 11:25:57,736 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:25:57,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2019-10-22 11:25:57,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 36. [2019-10-22 11:25:57,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-10-22 11:25:57,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 45 transitions. [2019-10-22 11:25:57,770 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 45 transitions. Word has length 8 [2019-10-22 11:25:57,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:57,770 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 45 transitions. [2019-10-22 11:25:57,771 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:25:57,771 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 45 transitions. [2019-10-22 11:25:57,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-22 11:25:57,771 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:57,771 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:25:57,772 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:57,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:57,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1436007159, now seen corresponding path program 1 times [2019-10-22 11:25:57,772 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:57,772 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144107039] [2019-10-22 11:25:57,772 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:57,773 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:57,773 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:57,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:57,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:57,813 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144107039] [2019-10-22 11:25:57,813 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672207313] [2019-10-22 11:25:57,813 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5eecd702-4937-4e26-962c-8bd6020ba151/bin/utaipan/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 [2019-10-22 11:25:57,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:57,865 INFO L256 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-22 11:25:57,869 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:25:57,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:57,890 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:25:57,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:57,917 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1711531202] [2019-10-22 11:25:57,923 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 11 [2019-10-22 11:25:57,961 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-10-22 11:25:57,961 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-22 11:25:58,254 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:25:58,254 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: inappropriate decl info IMPLEMENTATION at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Boogie2SmtSymbolTable.getBoogieVar(Boogie2SmtSymbolTable.java:222) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.getBoogieVar(NonrelationalStatementProcessor.java:348) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.handleHavocStatement(NonrelationalStatementProcessor.java:325) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.processStatement(NonrelationalStatementProcessor.java:159) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.process(NonrelationalStatementProcessor.java:138) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.process(NonrelationalStatementProcessor.java:107) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.handleInternalTransition(NonrelationalPostOperator.java:422) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.handleInternalTransition(NonrelationalPostOperator.java:413) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.apply(NonrelationalPostOperator.java:140) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.apply(NonrelationalPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.applyInternally(CompoundDomainPostOperator.java:306) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.apply(CompoundDomainPostOperator.java:131) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.apply(CompoundDomainPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormanCachedPostOperation.restoreOriginalStateVariables(PoormanCachedPostOperation.java:322) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.applyPost(PoormansAbstractPostOperator.java:217) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:120) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.lambda$17(DisjunctiveAbstractState.java:323) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.mapCollection(DisjunctiveAbstractState.java:519) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.apply(DisjunctiveAbstractState.java:323) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateAbstractPost(FixpointEngine.java:249) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateFixpoint(FixpointEngine.java:134) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.run(FixpointEngine.java:105) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.tool.AbstractInterpreter.runWithoutTimeoutAndResults(AbstractInterpreter.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner.generateFixpoints(CegarAbsIntRunner.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner.(CegarAbsIntRunner.java:158) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleAbstractInterpretation.getOrConstructRunner(IpTcStrategyModuleAbstractInterpretation.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleAbstractInterpretation.construct(IpTcStrategyModuleAbstractInterpretation.java:81) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:299) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-10-22 11:25:58,260 INFO L168 Benchmark]: Toolchain (without parser) took 1635.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 944.5 MB in the beginning and 1.0 GB in the end (delta: -96.4 MB). Peak memory consumption was 38.8 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:58,261 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:25:58,262 INFO L168 Benchmark]: CACSL2BoogieTranslator took 321.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -181.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:58,262 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.67 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:25:58,263 INFO L168 Benchmark]: Boogie Preprocessor took 29.52 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:25:58,263 INFO L168 Benchmark]: RCFGBuilder took 306.15 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 30.7 MB). Peak memory consumption was 30.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:58,264 INFO L168 Benchmark]: TraceAbstraction took 933.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 54.4 MB). Peak memory consumption was 54.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:58,268 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 321.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -181.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 41.67 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 29.52 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 306.15 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 30.7 MB). Peak memory consumption was 30.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 933.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 54.4 MB). Peak memory consumption was 54.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: inappropriate decl info IMPLEMENTATION de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: inappropriate decl info IMPLEMENTATION: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Boogie2SmtSymbolTable.getBoogieVar(Boogie2SmtSymbolTable.java:222) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-cad4683 [2019-10-22 11:26:00,430 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:26:00,432 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:26:00,441 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:26:00,442 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:26:00,443 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:26:00,444 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:26:00,445 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:26:00,446 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:26:00,447 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:26:00,452 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:26:00,453 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:26:00,459 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:26:00,460 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:26:00,460 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:26:00,461 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:26:00,462 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:26:00,463 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:26:00,466 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:26:00,467 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:26:00,470 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:26:00,471 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:26:00,472 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:26:00,472 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:26:00,474 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:26:00,474 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:26:00,474 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:26:00,475 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:26:00,478 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:26:00,479 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:26:00,480 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:26:00,481 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:26:00,481 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:26:00,482 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:26:00,483 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:26:00,484 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:26:00,485 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:26:00,485 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:26:00,485 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:26:00,486 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:26:00,489 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:26:00,490 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_5eecd702-4937-4e26-962c-8bd6020ba151/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-10-22 11:26:00,514 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:26:00,515 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:26:00,515 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:26:00,515 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:26:00,516 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:26:00,516 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:26:00,516 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:26:00,516 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:26:00,516 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:26:00,517 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:26:00,517 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:26:00,517 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:26:00,517 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:26:00,517 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:26:00,517 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:26:00,517 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:26:00,518 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-10-22 11:26:00,518 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-10-22 11:26:00,518 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:26:00,518 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:26:00,518 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 11:26:00,518 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:26:00,518 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:26:00,519 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:26:00,519 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:26:00,519 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:26:00,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:26:00,519 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:26:00,522 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:26:00,522 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:26:00,522 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-10-22 11:26:00,522 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-10-22 11:26:00,522 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:26:00,523 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:26:00,523 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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/working_dir_5eecd702-4937-4e26-962c-8bd6020ba151/bin/utaipan 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 -> Taipan 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 -> 08759f15decf079626360375bcbe361f0d9f1187 [2019-10-22 11:26:00,563 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:26:00,576 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:26:00,581 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:26:00,583 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:26:00,584 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:26:00,584 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_5eecd702-4937-4e26-962c-8bd6020ba151/bin/utaipan/../../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_ground-2.i [2019-10-22 11:26:00,634 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5eecd702-4937-4e26-962c-8bd6020ba151/bin/utaipan/data/f74011bad/4836e1bfcd8e42aca4d9c97fc67fffc1/FLAGc54fdbe10 [2019-10-22 11:26:01,010 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:26:01,011 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_5eecd702-4937-4e26-962c-8bd6020ba151/sv-benchmarks/c/array-examples/data_structures_set_multi_proc_ground-2.i [2019-10-22 11:26:01,018 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5eecd702-4937-4e26-962c-8bd6020ba151/bin/utaipan/data/f74011bad/4836e1bfcd8e42aca4d9c97fc67fffc1/FLAGc54fdbe10 [2019-10-22 11:26:01,032 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_5eecd702-4937-4e26-962c-8bd6020ba151/bin/utaipan/data/f74011bad/4836e1bfcd8e42aca4d9c97fc67fffc1 [2019-10-22 11:26:01,034 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:26:01,036 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:26:01,037 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:26:01,037 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:26:01,044 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:26:01,045 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:26:01" (1/1) ... [2019-10-22 11:26:01,047 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a93105e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:01, skipping insertion in model container [2019-10-22 11:26:01,047 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:26:01" (1/1) ... [2019-10-22 11:26:01,053 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:26:01,072 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:26:01,235 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:26:01,248 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:26:01,273 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:26:01,287 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:26:01,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:01 WrapperNode [2019-10-22 11:26:01,287 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:26:01,288 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:26:01,288 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:26:01,288 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:26:01,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:01" (1/1) ... [2019-10-22 11:26:01,359 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:01" (1/1) ... [2019-10-22 11:26:01,379 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:26:01,380 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:26:01,380 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:26:01,380 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:26:01,388 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:01" (1/1) ... [2019-10-22 11:26:01,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:01" (1/1) ... [2019-10-22 11:26:01,391 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:01" (1/1) ... [2019-10-22 11:26:01,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:01" (1/1) ... [2019-10-22 11:26:01,400 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:01" (1/1) ... [2019-10-22 11:26:01,405 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:01" (1/1) ... [2019-10-22 11:26:01,406 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:01" (1/1) ... [2019-10-22 11:26:01,409 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:26:01,409 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:26:01,410 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:26:01,410 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:26:01,410 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5eecd702-4937-4e26-962c-8bd6020ba151/bin/utaipan/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 [2019-10-22 11:26:01,452 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-10-22 11:26:01,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:26:01,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:26:01,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:26:01,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 11:26:01,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-10-22 11:26:01,712 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:26:01,712 INFO L284 CfgBuilder]: Removed 20 assume(true) statements. [2019-10-22 11:26:01,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:01 BoogieIcfgContainer [2019-10-22 11:26:01,713 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:26:01,714 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:26:01,714 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:26:01,717 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:26:01,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:26:01" (1/3) ... [2019-10-22 11:26:01,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5202c522 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:26:01, skipping insertion in model container [2019-10-22 11:26:01,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:01" (2/3) ... [2019-10-22 11:26:01,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5202c522 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:26:01, skipping insertion in model container [2019-10-22 11:26:01,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:01" (3/3) ... [2019-10-22 11:26:01,720 INFO L109 eAbstractionObserver]: Analyzing ICFG data_structures_set_multi_proc_ground-2.i [2019-10-22 11:26:01,727 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:26:01,733 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-10-22 11:26:01,751 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-10-22 11:26:01,775 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:26:01,775 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:26:01,775 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:26:01,775 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:26:01,775 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:26:01,776 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:26:01,776 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:26:01,776 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:26:01,792 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2019-10-22 11:26:01,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-10-22 11:26:01,800 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:01,801 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:01,803 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:01,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:01,811 INFO L82 PathProgramCache]: Analyzing trace with hash 212109301, now seen corresponding path program 1 times [2019-10-22 11:26:01,818 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:26:01,818 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1289621884] [2019-10-22 11:26:01,818 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5eecd702-4937-4e26-962c-8bd6020ba151/bin/utaipan/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:01,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:01,905 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:26:01,909 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:26:01,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:01,938 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:26:01,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:01,954 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1289621884] [2019-10-22 11:26:01,954 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:01,954 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-10-22 11:26:01,955 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002405840] [2019-10-22 11:26:01,958 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:26:01,958 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:26:01,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:26:01,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:26:01,972 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 4 states. [2019-10-22 11:26:02,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:02,095 INFO L93 Difference]: Finished difference Result 145 states and 219 transitions. [2019-10-22 11:26:02,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:26:02,098 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-10-22 11:26:02,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:02,106 INFO L225 Difference]: With dead ends: 145 [2019-10-22 11:26:02,107 INFO L226 Difference]: Without dead ends: 98 [2019-10-22 11:26:02,111 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:26:02,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2019-10-22 11:26:02,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 38. [2019-10-22 11:26:02,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-10-22 11:26:02,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2019-10-22 11:26:02,140 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 47 transitions. Word has length 8 [2019-10-22 11:26:02,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:02,141 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 47 transitions. [2019-10-22 11:26:02,141 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:26:02,141 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions. [2019-10-22 11:26:02,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-22 11:26:02,141 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:02,142 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:02,342 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:02,343 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:02,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:02,343 INFO L82 PathProgramCache]: Analyzing trace with hash 780809593, now seen corresponding path program 1 times [2019-10-22 11:26:02,343 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:26:02,344 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1968144809] [2019-10-22 11:26:02,344 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5eecd702-4937-4e26-962c-8bd6020ba151/bin/utaipan/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:02,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:02,431 INFO L256 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 11:26:02,432 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:26:02,452 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:02,452 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:26:02,495 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:02,495 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1968144809] [2019-10-22 11:26:02,495 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767688239] [2019-10-22 11:26:02,495 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5eecd702-4937-4e26-962c-8bd6020ba151/bin/utaipan/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 [2019-10-22 11:26:02,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:02,543 INFO L256 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-22 11:26:02,544 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:26:02,590 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-22 11:26:02,590 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:26:02,629 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-22 11:26:02,629 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2019-10-22 11:26:02,629 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 12 [2019-10-22 11:26:02,630 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497631782] [2019-10-22 11:26:02,631 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 11:26:02,634 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:26:02,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 11:26:02,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2019-10-22 11:26:02,635 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand 6 states. [2019-10-22 11:26:02,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:02,740 INFO L93 Difference]: Finished difference Result 73 states and 93 transitions. [2019-10-22 11:26:02,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:26:02,743 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2019-10-22 11:26:02,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:02,743 INFO L225 Difference]: With dead ends: 73 [2019-10-22 11:26:02,744 INFO L226 Difference]: Without dead ends: 41 [2019-10-22 11:26:02,745 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2019-10-22 11:26:02,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-10-22 11:26:02,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2019-10-22 11:26:02,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-10-22 11:26:02,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 49 transitions. [2019-10-22 11:26:02,753 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 49 transitions. Word has length 12 [2019-10-22 11:26:02,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:02,753 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 49 transitions. [2019-10-22 11:26:02,753 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 11:26:02,753 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions. [2019-10-22 11:26:02,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-22 11:26:02,754 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:02,754 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:03,159 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:26:03,160 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:03,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:03,160 INFO L82 PathProgramCache]: Analyzing trace with hash 27211895, now seen corresponding path program 1 times [2019-10-22 11:26:03,160 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:26:03,160 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [273952067] [2019-10-22 11:26:03,161 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5eecd702-4937-4e26-962c-8bd6020ba151/bin/utaipan/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:03,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:03,280 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 11:26:03,282 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:26:03,304 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 11:26:03,305 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:26:03,350 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 11:26:03,351 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [273952067] [2019-10-22 11:26:03,351 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587508673] [2019-10-22 11:26:03,351 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5eecd702-4937-4e26-962c-8bd6020ba151/bin/utaipan/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 [2019-10-22 11:26:03,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:03,413 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:26:03,414 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:26:03,437 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-22 11:26:03,438 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:26:03,461 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-22 11:26:03,462 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2019-10-22 11:26:03,462 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2019-10-22 11:26:03,462 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771823227] [2019-10-22 11:26:03,462 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:26:03,463 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:26:03,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:26:03,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-10-22 11:26:03,465 INFO L87 Difference]: Start difference. First operand 39 states and 49 transitions. Second operand 4 states. [2019-10-22 11:26:03,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:03,534 INFO L93 Difference]: Finished difference Result 81 states and 105 transitions. [2019-10-22 11:26:03,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:26:03,535 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2019-10-22 11:26:03,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:03,536 INFO L225 Difference]: With dead ends: 81 [2019-10-22 11:26:03,536 INFO L226 Difference]: Without dead ends: 54 [2019-10-22 11:26:03,537 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-10-22 11:26:03,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-10-22 11:26:03,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2019-10-22 11:26:03,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-10-22 11:26:03,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 65 transitions. [2019-10-22 11:26:03,545 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 65 transitions. Word has length 25 [2019-10-22 11:26:03,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:03,545 INFO L462 AbstractCegarLoop]: Abstraction has 52 states and 65 transitions. [2019-10-22 11:26:03,546 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:26:03,546 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 65 transitions. [2019-10-22 11:26:03,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-10-22 11:26:03,546 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:03,547 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:03,947 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:26:03,948 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:03,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:03,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1747591459, now seen corresponding path program 1 times [2019-10-22 11:26:03,949 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:26:03,949 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [231384098] [2019-10-22 11:26:03,949 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5eecd702-4937-4e26-962c-8bd6020ba151/bin/utaipan/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:04,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:04,025 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-22 11:26:04,027 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:26:04,043 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-22 11:26:04,043 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:26:04,047 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-22 11:26:04,047 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [231384098] [2019-10-22 11:26:04,048 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:04,048 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-10-22 11:26:04,048 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716945711] [2019-10-22 11:26:04,048 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:26:04,049 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:26:04,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:26:04,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:26:04,049 INFO L87 Difference]: Start difference. First operand 52 states and 65 transitions. Second operand 4 states. [2019-10-22 11:26:04,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:04,086 INFO L93 Difference]: Finished difference Result 99 states and 125 transitions. [2019-10-22 11:26:04,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:26:04,087 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2019-10-22 11:26:04,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:04,089 INFO L225 Difference]: With dead ends: 99 [2019-10-22 11:26:04,089 INFO L226 Difference]: Without dead ends: 73 [2019-10-22 11:26:04,090 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:26:04,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2019-10-22 11:26:04,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 55. [2019-10-22 11:26:04,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-10-22 11:26:04,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 68 transitions. [2019-10-22 11:26:04,098 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 68 transitions. Word has length 35 [2019-10-22 11:26:04,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:04,099 INFO L462 AbstractCegarLoop]: Abstraction has 55 states and 68 transitions. [2019-10-22 11:26:04,099 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:26:04,099 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 68 transitions. [2019-10-22 11:26:04,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-10-22 11:26:04,100 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:04,100 INFO L380 BasicCegarLoop]: trace histogram [2, 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] [2019-10-22 11:26:04,301 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:04,301 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:04,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:04,301 INFO L82 PathProgramCache]: Analyzing trace with hash 525581159, now seen corresponding path program 1 times [2019-10-22 11:26:04,302 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:26:04,302 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [960895573] [2019-10-22 11:26:04,302 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5eecd702-4937-4e26-962c-8bd6020ba151/bin/utaipan/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:04,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:04,436 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 11:26:04,437 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:26:04,454 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-22 11:26:04,454 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:26:04,498 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-22 11:26:04,499 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [960895573] [2019-10-22 11:26:04,499 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28667141] [2019-10-22 11:26:04,499 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5eecd702-4937-4e26-962c-8bd6020ba151/bin/utaipan/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 [2019-10-22 11:26:04,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:04,563 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 11:26:04,566 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:26:04,570 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-22 11:26:04,570 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:26:04,576 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-22 11:26:04,576 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-22 11:26:04,577 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5] total 8 [2019-10-22 11:26:04,577 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382359113] [2019-10-22 11:26:04,577 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 11:26:04,578 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:26:04,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 11:26:04,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:26:04,578 INFO L87 Difference]: Start difference. First operand 55 states and 68 transitions. Second operand 8 states. [2019-10-22 11:26:04,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:04,784 INFO L93 Difference]: Finished difference Result 159 states and 194 transitions. [2019-10-22 11:26:04,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 11:26:04,785 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2019-10-22 11:26:04,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:04,786 INFO L225 Difference]: With dead ends: 159 [2019-10-22 11:26:04,786 INFO L226 Difference]: Without dead ends: 111 [2019-10-22 11:26:04,786 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2019-10-22 11:26:04,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2019-10-22 11:26:04,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 63. [2019-10-22 11:26:04,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2019-10-22 11:26:04,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 76 transitions. [2019-10-22 11:26:04,795 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 76 transitions. Word has length 35 [2019-10-22 11:26:04,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:04,796 INFO L462 AbstractCegarLoop]: Abstraction has 63 states and 76 transitions. [2019-10-22 11:26:04,796 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 11:26:04,796 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 76 transitions. [2019-10-22 11:26:04,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-10-22 11:26:04,797 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:04,797 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 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] [2019-10-22 11:26:05,197 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:05,198 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:05,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:05,198 INFO L82 PathProgramCache]: Analyzing trace with hash 429350239, now seen corresponding path program 2 times [2019-10-22 11:26:05,198 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:26:05,199 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1064990113] [2019-10-22 11:26:05,199 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5eecd702-4937-4e26-962c-8bd6020ba151/bin/utaipan/cvc4 Starting monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:05,354 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 11:26:05,355 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 11:26:05,357 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 11:26:05,358 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:26:05,429 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-22 11:26:05,429 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:26:05,649 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-22 11:26:05,650 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1064990113] [2019-10-22 11:26:05,650 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203098273] [2019-10-22 11:26:05,650 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5eecd702-4937-4e26-962c-8bd6020ba151/bin/utaipan/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:26:05,723 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 11:26:05,723 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 11:26:05,728 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 11:26:05,730 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:26:05,815 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-22 11:26:05,815 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:26:05,935 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-22 11:26:05,935 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-22 11:26:05,935 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 5, 5] total 22 [2019-10-22 11:26:05,936 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511850618] [2019-10-22 11:26:05,936 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-10-22 11:26:05,937 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:26:05,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-10-22 11:26:05,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2019-10-22 11:26:05,938 INFO L87 Difference]: Start difference. First operand 63 states and 76 transitions. Second operand 22 states. [2019-10-22 11:26:07,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:07,456 INFO L93 Difference]: Finished difference Result 321 states and 400 transitions. [2019-10-22 11:26:07,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-22 11:26:07,457 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 43 [2019-10-22 11:26:07,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:07,459 INFO L225 Difference]: With dead ends: 321 [2019-10-22 11:26:07,459 INFO L226 Difference]: Without dead ends: 273 [2019-10-22 11:26:07,460 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2019-10-22 11:26:07,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2019-10-22 11:26:07,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 159. [2019-10-22 11:26:07,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2019-10-22 11:26:07,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 196 transitions. [2019-10-22 11:26:07,492 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 196 transitions. Word has length 43 [2019-10-22 11:26:07,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:07,493 INFO L462 AbstractCegarLoop]: Abstraction has 159 states and 196 transitions. [2019-10-22 11:26:07,493 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-10-22 11:26:07,493 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 196 transitions. [2019-10-22 11:26:07,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2019-10-22 11:26:07,495 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:07,495 INFO L380 BasicCegarLoop]: trace histogram [14, 14, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:07,899 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 cvc4 --incremental --print-success --lang smt --rewrite-divk,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:26:07,900 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:07,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:07,900 INFO L82 PathProgramCache]: Analyzing trace with hash 482346007, now seen corresponding path program 3 times [2019-10-22 11:26:07,901 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:26:07,901 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1264701433] [2019-10-22 11:26:07,901 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5eecd702-4937-4e26-962c-8bd6020ba151/bin/utaipan/cvc4 Starting monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:08,063 ERROR L273 tionRefinementEngine]: Caught known exception: Array theory solver does not yet support write-chains connecting two different constant arrays [2019-10-22 11:26:08,064 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [509036096] [2019-10-22 11:26:08,065 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5eecd702-4937-4e26-962c-8bd6020ba151/bin/utaipan/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:26:08,219 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-10-22 11:26:08,219 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 11:26:08,225 INFO L256 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 11:26:08,227 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:26:08,319 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2019-10-22 11:26:08,319 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:26:08,426 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2019-10-22 11:26:08,426 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1264701433] [2019-10-22 11:26:08,627 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:26:08,628 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: Do not try to interpolate when trace is feasible at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:328) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-10-22 11:26:08,638 INFO L168 Benchmark]: Toolchain (without parser) took 7600.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 194.0 MB). Free memory was 952.3 MB in the beginning and 972.4 MB in the end (delta: -20.1 MB). Peak memory consumption was 173.9 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:08,642 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 977.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:26:08,644 INFO L168 Benchmark]: CACSL2BoogieTranslator took 250.96 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:08,644 INFO L168 Benchmark]: Boogie Procedure Inliner took 91.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.2 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -170.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:08,644 INFO L168 Benchmark]: Boogie Preprocessor took 29.38 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:26:08,645 INFO L168 Benchmark]: RCFGBuilder took 303.84 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.7 MB). Peak memory consumption was 32.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:08,645 INFO L168 Benchmark]: TraceAbstraction took 6920.75 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 70.8 MB). Free memory was 1.1 GB in the beginning and 972.4 MB in the end (delta: 106.5 MB). Peak memory consumption was 177.3 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:08,649 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 977.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 250.96 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 91.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.2 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -170.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 29.38 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 303.84 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.7 MB). Peak memory consumption was 32.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6920.75 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 70.8 MB). Free memory was 1.1 GB in the beginning and 972.4 MB in the end (delta: 106.5 MB). Peak memory consumption was 177.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: Do not try to interpolate when trace is feasible de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: Do not try to interpolate when trace is feasible : de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:328) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...