./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product43.cil.c --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_bafdffbc-a90c-41a1-bd73-1f383aa3c08c/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_bafdffbc-a90c-41a1-bd73-1f383aa3c08c/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_bafdffbc-a90c-41a1-bd73-1f383aa3c08c/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_bafdffbc-a90c-41a1-bd73-1f383aa3c08c/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product43.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_bafdffbc-a90c-41a1-bd73-1f383aa3c08c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_bafdffbc-a90c-41a1-bd73-1f383aa3c08c/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 437b76c0cd9dd6f0417f690a0c81e41159d0829e .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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_bafdffbc-a90c-41a1-bd73-1f383aa3c08c/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_bafdffbc-a90c-41a1-bd73-1f383aa3c08c/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_bafdffbc-a90c-41a1-bd73-1f383aa3c08c/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_bafdffbc-a90c-41a1-bd73-1f383aa3c08c/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product43.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_bafdffbc-a90c-41a1-bd73-1f383aa3c08c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_bafdffbc-a90c-41a1-bd73-1f383aa3c08c/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 437b76c0cd9dd6f0417f690a0c81e41159d0829e ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 11:26:27,615 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:26:27,619 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:26:27,631 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:26:27,632 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:26:27,633 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:26:27,635 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:26:27,637 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:26:27,641 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:26:27,641 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:26:27,642 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:26:27,643 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:26:27,644 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:26:27,645 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:26:27,646 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:26:27,646 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:26:27,647 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:26:27,648 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:26:27,650 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:26:27,651 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:26:27,658 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:26:27,659 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:26:27,660 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:26:27,661 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:26:27,663 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:26:27,663 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:26:27,663 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:26:27,665 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:26:27,666 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:26:27,667 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:26:27,667 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:26:27,668 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:26:27,669 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:26:27,669 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:26:27,670 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:26:27,670 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:26:27,671 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:26:27,671 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:26:27,671 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:26:27,672 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:26:27,677 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:26:27,677 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_bafdffbc-a90c-41a1-bd73-1f383aa3c08c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:26:27,695 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:26:27,695 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:26:27,696 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:26:27,696 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:26:27,696 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:26:27,696 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:26:27,697 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:26:27,697 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:26:27,697 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:26:27,697 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:26:27,697 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:26:27,697 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:26:27,698 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:26:27,698 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:26:27,699 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:26:27,699 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:26:27,699 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:26:27,699 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:26:27,699 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:26:27,699 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:26:27,700 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:26:27,700 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:26:27,700 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:26:27,701 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:26:27,701 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:26:27,701 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:26:27,701 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:26:27,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:26:27,702 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:26:27,702 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:26:27,702 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:26:27,702 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:26:27,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:26:27,702 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:26:27,703 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:26:27,703 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_bafdffbc-a90c-41a1-bd73-1f383aa3c08c/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 -> 437b76c0cd9dd6f0417f690a0c81e41159d0829e [2019-10-22 11:26:27,731 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:26:27,743 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:26:27,746 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:26:27,748 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:26:27,748 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:26:27,749 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_bafdffbc-a90c-41a1-bd73-1f383aa3c08c/bin/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec4_product43.cil.c [2019-10-22 11:26:27,801 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_bafdffbc-a90c-41a1-bd73-1f383aa3c08c/bin/utaipan/data/e597ca67c/b1641500c70249898b416d0be72c5d9a/FLAG74d1634e7 [2019-10-22 11:26:28,233 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:26:28,234 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_bafdffbc-a90c-41a1-bd73-1f383aa3c08c/sv-benchmarks/c/product-lines/minepump_spec4_product43.cil.c [2019-10-22 11:26:28,247 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_bafdffbc-a90c-41a1-bd73-1f383aa3c08c/bin/utaipan/data/e597ca67c/b1641500c70249898b416d0be72c5d9a/FLAG74d1634e7 [2019-10-22 11:26:28,552 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_bafdffbc-a90c-41a1-bd73-1f383aa3c08c/bin/utaipan/data/e597ca67c/b1641500c70249898b416d0be72c5d9a [2019-10-22 11:26:28,555 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:26:28,556 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:26:28,558 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:26:28,558 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:26:28,569 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:26:28,569 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:26:28" (1/1) ... [2019-10-22 11:26:28,572 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38c4d0b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:28, skipping insertion in model container [2019-10-22 11:26:28,572 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:26:28" (1/1) ... [2019-10-22 11:26:28,580 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:26:28,635 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:26:29,026 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:26:29,039 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:26:29,114 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:26:29,151 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:26:29,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:29 WrapperNode [2019-10-22 11:26:29,151 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:26:29,153 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:26:29,153 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:26:29,153 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:26:29,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:29" (1/1) ... [2019-10-22 11:26:29,195 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:29" (1/1) ... [2019-10-22 11:26:29,246 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:26:29,247 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:26:29,248 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:26:29,248 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:26:29,258 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:29" (1/1) ... [2019-10-22 11:26:29,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:29" (1/1) ... [2019-10-22 11:26:29,262 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:29" (1/1) ... [2019-10-22 11:26:29,262 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:29" (1/1) ... [2019-10-22 11:26:29,275 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:29" (1/1) ... [2019-10-22 11:26:29,282 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:29" (1/1) ... [2019-10-22 11:26:29,284 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:29" (1/1) ... [2019-10-22 11:26:29,289 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:26:29,289 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:26:29,289 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:26:29,290 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:26:29,293 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:29" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bafdffbc-a90c-41a1-bd73-1f383aa3c08c/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 11:26:29,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:26:29,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-22 11:26:29,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:26:29,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:26:30,335 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:26:30,335 INFO L284 CfgBuilder]: Removed 118 assume(true) statements. [2019-10-22 11:26:30,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:30 BoogieIcfgContainer [2019-10-22 11:26:30,337 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:26:30,338 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:26:30,339 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:26:30,342 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:26:30,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:26:28" (1/3) ... [2019-10-22 11:26:30,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34898a3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:26:30, skipping insertion in model container [2019-10-22 11:26:30,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:29" (2/3) ... [2019-10-22 11:26:30,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34898a3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:26:30, skipping insertion in model container [2019-10-22 11:26:30,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:30" (3/3) ... [2019-10-22 11:26:30,354 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product43.cil.c [2019-10-22 11:26:30,377 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:26:30,388 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-10-22 11:26:30,397 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-10-22 11:26:30,423 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:26:30,423 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:26:30,423 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:26:30,424 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:26:30,424 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:26:30,424 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:26:30,424 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:26:30,424 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:26:30,442 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states. [2019-10-22 11:26:30,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-22 11:26:30,451 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:30,451 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:30,454 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:30,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:30,460 INFO L82 PathProgramCache]: Analyzing trace with hash 929673937, now seen corresponding path program 1 times [2019-10-22 11:26:30,470 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:30,470 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301736859] [2019-10-22 11:26:30,471 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:30,471 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:30,471 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:30,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:30,746 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 11:26:30,747 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301736859] [2019-10-22 11:26:30,748 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:30,748 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:26:30,748 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384098673] [2019-10-22 11:26:30,752 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:26:30,753 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:30,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:26:30,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:26:30,767 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 2 states. [2019-10-22 11:26:30,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:30,799 INFO L93 Difference]: Finished difference Result 172 states and 257 transitions. [2019-10-22 11:26:30,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:26:30,801 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-10-22 11:26:30,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:30,811 INFO L225 Difference]: With dead ends: 172 [2019-10-22 11:26:30,811 INFO L226 Difference]: Without dead ends: 85 [2019-10-22 11:26:30,815 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:26:30,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2019-10-22 11:26:30,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2019-10-22 11:26:30,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2019-10-22 11:26:30,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 120 transitions. [2019-10-22 11:26:30,872 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 120 transitions. Word has length 16 [2019-10-22 11:26:30,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:30,872 INFO L462 AbstractCegarLoop]: Abstraction has 85 states and 120 transitions. [2019-10-22 11:26:30,873 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:26:30,873 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 120 transitions. [2019-10-22 11:26:30,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 11:26:30,874 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:30,874 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:30,874 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:30,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:30,875 INFO L82 PathProgramCache]: Analyzing trace with hash -117082960, now seen corresponding path program 1 times [2019-10-22 11:26:30,875 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:30,875 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519042084] [2019-10-22 11:26:30,875 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:30,875 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:30,876 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:30,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:30,969 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 11:26:30,970 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519042084] [2019-10-22 11:26:30,970 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:30,970 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:26:30,970 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851559844] [2019-10-22 11:26:30,972 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:26:30,972 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:30,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:26:30,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:26:30,973 INFO L87 Difference]: Start difference. First operand 85 states and 120 transitions. Second operand 3 states. [2019-10-22 11:26:30,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:30,986 INFO L93 Difference]: Finished difference Result 85 states and 120 transitions. [2019-10-22 11:26:30,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:26:30,987 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-10-22 11:26:30,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:30,988 INFO L225 Difference]: With dead ends: 85 [2019-10-22 11:26:30,988 INFO L226 Difference]: Without dead ends: 39 [2019-10-22 11:26:30,989 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 11:26:30,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-10-22 11:26:30,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2019-10-22 11:26:30,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-10-22 11:26:30,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 55 transitions. [2019-10-22 11:26:30,998 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 55 transitions. Word has length 17 [2019-10-22 11:26:30,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:30,999 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 55 transitions. [2019-10-22 11:26:30,999 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:26:30,999 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 55 transitions. [2019-10-22 11:26:30,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-22 11:26:31,000 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:31,000 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:31,000 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:31,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:31,001 INFO L82 PathProgramCache]: Analyzing trace with hash 337421565, now seen corresponding path program 1 times [2019-10-22 11:26:31,001 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:31,001 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326548670] [2019-10-22 11:26:31,001 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:31,001 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:31,001 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:31,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:31,167 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 11:26:31,168 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326548670] [2019-10-22 11:26:31,168 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:31,171 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:26:31,171 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53868440] [2019-10-22 11:26:31,172 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 11:26:31,174 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:31,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 11:26:31,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:26:31,175 INFO L87 Difference]: Start difference. First operand 39 states and 55 transitions. Second operand 6 states. [2019-10-22 11:26:31,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:31,314 INFO L93 Difference]: Finished difference Result 128 states and 187 transitions. [2019-10-22 11:26:31,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:26:31,316 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2019-10-22 11:26:31,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:31,317 INFO L225 Difference]: With dead ends: 128 [2019-10-22 11:26:31,317 INFO L226 Difference]: Without dead ends: 95 [2019-10-22 11:26:31,318 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:26:31,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2019-10-22 11:26:31,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 58. [2019-10-22 11:26:31,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-10-22 11:26:31,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 84 transitions. [2019-10-22 11:26:31,331 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 84 transitions. Word has length 22 [2019-10-22 11:26:31,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:31,331 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 84 transitions. [2019-10-22 11:26:31,331 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 11:26:31,332 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 84 transitions. [2019-10-22 11:26:31,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-22 11:26:31,333 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:31,333 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:31,333 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:31,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:31,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1224569535, now seen corresponding path program 1 times [2019-10-22 11:26:31,334 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:31,334 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239821857] [2019-10-22 11:26:31,334 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:31,334 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:31,334 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:31,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:31,386 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 11:26:31,386 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239821857] [2019-10-22 11:26:31,386 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:31,387 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:26:31,387 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599306840] [2019-10-22 11:26:31,387 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:26:31,387 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:31,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:26:31,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:26:31,388 INFO L87 Difference]: Start difference. First operand 58 states and 84 transitions. Second operand 3 states. [2019-10-22 11:26:31,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:31,448 INFO L93 Difference]: Finished difference Result 131 states and 192 transitions. [2019-10-22 11:26:31,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:26:31,449 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2019-10-22 11:26:31,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:31,450 INFO L225 Difference]: With dead ends: 131 [2019-10-22 11:26:31,450 INFO L226 Difference]: Without dead ends: 79 [2019-10-22 11:26:31,450 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 11:26:31,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2019-10-22 11:26:31,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2019-10-22 11:26:31,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2019-10-22 11:26:31,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 109 transitions. [2019-10-22 11:26:31,461 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 109 transitions. Word has length 23 [2019-10-22 11:26:31,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:31,462 INFO L462 AbstractCegarLoop]: Abstraction has 77 states and 109 transitions. [2019-10-22 11:26:31,462 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:26:31,462 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 109 transitions. [2019-10-22 11:26:31,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-22 11:26:31,463 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:31,463 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:31,463 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:31,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:31,463 INFO L82 PathProgramCache]: Analyzing trace with hash -840484654, now seen corresponding path program 1 times [2019-10-22 11:26:31,464 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:31,464 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791583362] [2019-10-22 11:26:31,464 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:31,465 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:31,465 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:31,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:31,528 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 11:26:31,529 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791583362] [2019-10-22 11:26:31,529 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:31,529 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:26:31,529 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723881489] [2019-10-22 11:26:31,530 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:26:31,530 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:31,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:26:31,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:26:31,531 INFO L87 Difference]: Start difference. First operand 77 states and 109 transitions. Second operand 5 states. [2019-10-22 11:26:31,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:31,664 INFO L93 Difference]: Finished difference Result 281 states and 406 transitions. [2019-10-22 11:26:31,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:26:31,665 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2019-10-22 11:26:31,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:31,667 INFO L225 Difference]: With dead ends: 281 [2019-10-22 11:26:31,667 INFO L226 Difference]: Without dead ends: 210 [2019-10-22 11:26:31,668 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:26:31,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2019-10-22 11:26:31,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 138. [2019-10-22 11:26:31,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2019-10-22 11:26:31,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 191 transitions. [2019-10-22 11:26:31,691 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 191 transitions. Word has length 25 [2019-10-22 11:26:31,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:31,692 INFO L462 AbstractCegarLoop]: Abstraction has 138 states and 191 transitions. [2019-10-22 11:26:31,692 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:26:31,692 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 191 transitions. [2019-10-22 11:26:31,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-10-22 11:26:31,693 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:31,694 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:31,694 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:31,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:31,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1495173652, now seen corresponding path program 1 times [2019-10-22 11:26:31,695 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:31,695 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699027905] [2019-10-22 11:26:31,695 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:31,695 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:31,695 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:31,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:31,783 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 11:26:31,783 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699027905] [2019-10-22 11:26:31,783 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:31,784 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:26:31,784 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290503164] [2019-10-22 11:26:31,784 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:26:31,784 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:31,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:26:31,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:26:31,785 INFO L87 Difference]: Start difference. First operand 138 states and 191 transitions. Second operand 5 states. [2019-10-22 11:26:31,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:31,963 INFO L93 Difference]: Finished difference Result 277 states and 391 transitions. [2019-10-22 11:26:31,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-22 11:26:31,966 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2019-10-22 11:26:31,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:31,968 INFO L225 Difference]: With dead ends: 277 [2019-10-22 11:26:31,968 INFO L226 Difference]: Without dead ends: 275 [2019-10-22 11:26:31,969 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-22 11:26:31,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2019-10-22 11:26:32,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 138. [2019-10-22 11:26:32,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2019-10-22 11:26:32,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 189 transitions. [2019-10-22 11:26:32,009 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 189 transitions. Word has length 26 [2019-10-22 11:26:32,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:32,009 INFO L462 AbstractCegarLoop]: Abstraction has 138 states and 189 transitions. [2019-10-22 11:26:32,010 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:26:32,010 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 189 transitions. [2019-10-22 11:26:32,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-10-22 11:26:32,011 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:32,011 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:32,011 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:32,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:32,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1499969411, now seen corresponding path program 1 times [2019-10-22 11:26:32,016 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:32,016 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158559349] [2019-10-22 11:26:32,017 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:32,017 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:32,017 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:32,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:32,110 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 11:26:32,111 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158559349] [2019-10-22 11:26:32,111 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:32,111 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:26:32,111 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484063399] [2019-10-22 11:26:32,112 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:26:32,113 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:32,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:26:32,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:26:32,114 INFO L87 Difference]: Start difference. First operand 138 states and 189 transitions. Second operand 5 states. [2019-10-22 11:26:32,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:32,191 INFO L93 Difference]: Finished difference Result 422 states and 578 transitions. [2019-10-22 11:26:32,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:26:32,192 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2019-10-22 11:26:32,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:32,194 INFO L225 Difference]: With dead ends: 422 [2019-10-22 11:26:32,194 INFO L226 Difference]: Without dead ends: 290 [2019-10-22 11:26:32,195 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:26:32,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2019-10-22 11:26:32,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 144. [2019-10-22 11:26:32,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2019-10-22 11:26:32,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 195 transitions. [2019-10-22 11:26:32,236 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 195 transitions. Word has length 33 [2019-10-22 11:26:32,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:32,238 INFO L462 AbstractCegarLoop]: Abstraction has 144 states and 195 transitions. [2019-10-22 11:26:32,238 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:26:32,238 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 195 transitions. [2019-10-22 11:26:32,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-10-22 11:26:32,240 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:32,240 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:32,240 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:32,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:32,241 INFO L82 PathProgramCache]: Analyzing trace with hash -2086775425, now seen corresponding path program 1 times [2019-10-22 11:26:32,241 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:32,241 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597221554] [2019-10-22 11:26:32,241 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:32,241 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:32,242 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:32,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:32,308 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 11:26:32,308 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597221554] [2019-10-22 11:26:32,308 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:32,308 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:26:32,309 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989444320] [2019-10-22 11:26:32,309 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:26:32,309 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:32,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:26:32,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:26:32,310 INFO L87 Difference]: Start difference. First operand 144 states and 195 transitions. Second operand 4 states. [2019-10-22 11:26:32,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:32,361 INFO L93 Difference]: Finished difference Result 335 states and 455 transitions. [2019-10-22 11:26:32,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:26:32,362 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2019-10-22 11:26:32,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:32,364 INFO L225 Difference]: With dead ends: 335 [2019-10-22 11:26:32,364 INFO L226 Difference]: Without dead ends: 197 [2019-10-22 11:26:32,365 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 11:26:32,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2019-10-22 11:26:32,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 123. [2019-10-22 11:26:32,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2019-10-22 11:26:32,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 164 transitions. [2019-10-22 11:26:32,410 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 164 transitions. Word has length 33 [2019-10-22 11:26:32,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:32,411 INFO L462 AbstractCegarLoop]: Abstraction has 123 states and 164 transitions. [2019-10-22 11:26:32,412 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:26:32,412 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 164 transitions. [2019-10-22 11:26:32,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-10-22 11:26:32,415 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:32,415 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:32,415 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:32,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:32,416 INFO L82 PathProgramCache]: Analyzing trace with hash 928328193, now seen corresponding path program 1 times [2019-10-22 11:26:32,416 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:32,416 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024003787] [2019-10-22 11:26:32,416 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:32,417 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:32,417 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:32,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:32,476 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 11:26:32,477 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024003787] [2019-10-22 11:26:32,477 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:32,477 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:26:32,477 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156306300] [2019-10-22 11:26:32,478 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:26:32,478 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:32,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:26:32,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:26:32,478 INFO L87 Difference]: Start difference. First operand 123 states and 164 transitions. Second operand 5 states. [2019-10-22 11:26:32,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:32,619 INFO L93 Difference]: Finished difference Result 308 states and 427 transitions. [2019-10-22 11:26:32,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:26:32,620 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2019-10-22 11:26:32,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:32,621 INFO L225 Difference]: With dead ends: 308 [2019-10-22 11:26:32,622 INFO L226 Difference]: Without dead ends: 232 [2019-10-22 11:26:32,622 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:26:32,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2019-10-22 11:26:32,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 179. [2019-10-22 11:26:32,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2019-10-22 11:26:32,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 238 transitions. [2019-10-22 11:26:32,659 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 238 transitions. Word has length 33 [2019-10-22 11:26:32,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:32,660 INFO L462 AbstractCegarLoop]: Abstraction has 179 states and 238 transitions. [2019-10-22 11:26:32,660 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:26:32,660 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 238 transitions. [2019-10-22 11:26:32,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-10-22 11:26:32,669 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:32,669 INFO L380 BasicCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:32,670 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:32,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:32,670 INFO L82 PathProgramCache]: Analyzing trace with hash -423849614, now seen corresponding path program 1 times [2019-10-22 11:26:32,670 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:32,671 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973887827] [2019-10-22 11:26:32,671 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:32,671 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:32,671 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:32,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:32,759 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:32,759 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973887827] [2019-10-22 11:26:32,759 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897186999] [2019-10-22 11:26:32,759 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bafdffbc-a90c-41a1-bd73-1f383aa3c08c/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 11:26:32,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:32,885 INFO L256 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 11:26:32,892 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:26:32,922 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:32,926 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:26:32,952 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:32,953 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [882788560] [2019-10-22 11:26:32,959 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 49 [2019-10-22 11:26:33,004 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-10-22 11:26:33,004 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-22 11:26:33,436 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:26:33,437 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 11:26:33,442 INFO L168 Benchmark]: Toolchain (without parser) took 4885.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 937.8 MB in the beginning and 1.0 GB in the end (delta: -72.6 MB). Peak memory consumption was 67.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:33,443 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:26:33,443 INFO L168 Benchmark]: CACSL2BoogieTranslator took 594.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 937.8 MB in the beginning and 1.1 GB in the end (delta: -184.7 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:33,444 INFO L168 Benchmark]: Boogie Procedure Inliner took 94.76 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: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:33,445 INFO L168 Benchmark]: Boogie Preprocessor took 41.36 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 11:26:33,446 INFO L168 Benchmark]: RCFGBuilder took 1047.71 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: 54.6 MB). Peak memory consumption was 54.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:33,446 INFO L168 Benchmark]: TraceAbstraction took 3102.26 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: 45.4 MB). Peak memory consumption was 45.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:33,449 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 594.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 937.8 MB in the beginning and 1.1 GB in the end (delta: -184.7 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 94.76 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: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 41.36 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 1047.71 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: 54.6 MB). Peak memory consumption was 54.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3102.26 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: 45.4 MB). Peak memory consumption was 45.4 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 11:26:35,773 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:26:35,774 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:26:35,791 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:26:35,791 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:26:35,792 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:26:35,793 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:26:35,795 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:26:35,798 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:26:35,799 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:26:35,799 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:26:35,801 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:26:35,802 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:26:35,802 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:26:35,803 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:26:35,805 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:26:35,817 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:26:35,818 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:26:35,819 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:26:35,821 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:26:35,822 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:26:35,823 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:26:35,824 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:26:35,825 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:26:35,832 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:26:35,832 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:26:35,833 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:26:35,833 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:26:35,834 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:26:35,835 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:26:35,835 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:26:35,835 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:26:35,836 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:26:35,837 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:26:35,838 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:26:35,838 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:26:35,839 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:26:35,839 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:26:35,839 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:26:35,840 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:26:35,841 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:26:35,842 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_bafdffbc-a90c-41a1-bd73-1f383aa3c08c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-10-22 11:26:35,855 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:26:35,855 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:26:35,856 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:26:35,856 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:26:35,856 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:26:35,856 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:26:35,857 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:26:35,857 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:26:35,857 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:26:35,858 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:26:35,858 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:26:35,858 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:26:35,858 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:26:35,858 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:26:35,859 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:26:35,859 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:26:35,859 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-10-22 11:26:35,859 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-10-22 11:26:35,859 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:26:35,860 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:26:35,860 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 11:26:35,860 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:26:35,861 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:26:35,861 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:26:35,861 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:26:35,861 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:26:35,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:26:35,862 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:26:35,862 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:26:35,862 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:26:35,862 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-10-22 11:26:35,862 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-10-22 11:26:35,863 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:26:35,863 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:26:35,863 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_bafdffbc-a90c-41a1-bd73-1f383aa3c08c/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 -> 437b76c0cd9dd6f0417f690a0c81e41159d0829e [2019-10-22 11:26:35,895 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:26:35,906 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:26:35,909 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:26:35,911 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:26:35,911 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:26:35,912 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_bafdffbc-a90c-41a1-bd73-1f383aa3c08c/bin/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec4_product43.cil.c [2019-10-22 11:26:35,971 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_bafdffbc-a90c-41a1-bd73-1f383aa3c08c/bin/utaipan/data/bc7925325/8759a121fad047c1b3c3511c6412a1ad/FLAGbc35ac2a4 [2019-10-22 11:26:36,439 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:26:36,440 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_bafdffbc-a90c-41a1-bd73-1f383aa3c08c/sv-benchmarks/c/product-lines/minepump_spec4_product43.cil.c [2019-10-22 11:26:36,465 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_bafdffbc-a90c-41a1-bd73-1f383aa3c08c/bin/utaipan/data/bc7925325/8759a121fad047c1b3c3511c6412a1ad/FLAGbc35ac2a4 [2019-10-22 11:26:36,759 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_bafdffbc-a90c-41a1-bd73-1f383aa3c08c/bin/utaipan/data/bc7925325/8759a121fad047c1b3c3511c6412a1ad [2019-10-22 11:26:36,761 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:26:36,763 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:26:36,764 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:26:36,764 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:26:36,768 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:26:36,769 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:26:36" (1/1) ... [2019-10-22 11:26:36,771 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c3670d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:36, skipping insertion in model container [2019-10-22 11:26:36,772 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:26:36" (1/1) ... [2019-10-22 11:26:36,779 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:26:36,828 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:26:37,147 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:26:37,239 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:26:37,329 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:26:37,372 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:26:37,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:37 WrapperNode [2019-10-22 11:26:37,372 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:26:37,373 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:26:37,373 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:26:37,374 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:26:37,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:37" (1/1) ... [2019-10-22 11:26:37,400 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:37" (1/1) ... [2019-10-22 11:26:37,438 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:26:37,438 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:26:37,438 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:26:37,439 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:26:37,451 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:37" (1/1) ... [2019-10-22 11:26:37,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:37" (1/1) ... [2019-10-22 11:26:37,458 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:37" (1/1) ... [2019-10-22 11:26:37,458 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:37" (1/1) ... [2019-10-22 11:26:37,471 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:37" (1/1) ... [2019-10-22 11:26:37,479 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:37" (1/1) ... [2019-10-22 11:26:37,482 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:37" (1/1) ... [2019-10-22 11:26:37,486 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:26:37,487 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:26:37,487 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:26:37,487 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:26:37,488 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bafdffbc-a90c-41a1-bd73-1f383aa3c08c/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 11:26:37,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:26:37,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2019-10-22 11:26:37,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:26:37,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:26:38,523 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:26:38,524 INFO L284 CfgBuilder]: Removed 118 assume(true) statements. [2019-10-22 11:26:38,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:38 BoogieIcfgContainer [2019-10-22 11:26:38,525 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:26:38,526 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:26:38,526 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:26:38,531 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:26:38,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:26:36" (1/3) ... [2019-10-22 11:26:38,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22d11bb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:26:38, skipping insertion in model container [2019-10-22 11:26:38,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:37" (2/3) ... [2019-10-22 11:26:38,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22d11bb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:26:38, skipping insertion in model container [2019-10-22 11:26:38,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:38" (3/3) ... [2019-10-22 11:26:38,536 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product43.cil.c [2019-10-22 11:26:38,549 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:26:38,561 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-10-22 11:26:38,573 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-10-22 11:26:38,607 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:26:38,607 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:26:38,608 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:26:38,608 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:26:38,608 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:26:38,609 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:26:38,609 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:26:38,609 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:26:38,629 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states. [2019-10-22 11:26:38,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-22 11:26:38,639 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:38,640 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:38,642 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:38,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:38,650 INFO L82 PathProgramCache]: Analyzing trace with hash 929673937, now seen corresponding path program 1 times [2019-10-22 11:26:38,663 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:26:38,664 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [145509797] [2019-10-22 11:26:38,665 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bafdffbc-a90c-41a1-bd73-1f383aa3c08c/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 11:26:38,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:38,914 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-22 11:26:38,920 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:26:38,936 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 11:26:38,937 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:26:38,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:38,943 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [145509797] [2019-10-22 11:26:38,944 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:38,944 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-10-22 11:26:38,945 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571492212] [2019-10-22 11:26:38,949 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:26:38,950 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:26:38,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:26:38,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:26:38,968 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 2 states. [2019-10-22 11:26:38,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:38,999 INFO L93 Difference]: Finished difference Result 172 states and 257 transitions. [2019-10-22 11:26:38,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:26:39,001 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-10-22 11:26:39,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:39,014 INFO L225 Difference]: With dead ends: 172 [2019-10-22 11:26:39,014 INFO L226 Difference]: Without dead ends: 85 [2019-10-22 11:26:39,018 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:26:39,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2019-10-22 11:26:39,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2019-10-22 11:26:39,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2019-10-22 11:26:39,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 120 transitions. [2019-10-22 11:26:39,068 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 120 transitions. Word has length 16 [2019-10-22 11:26:39,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:39,069 INFO L462 AbstractCegarLoop]: Abstraction has 85 states and 120 transitions. [2019-10-22 11:26:39,069 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:26:39,069 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 120 transitions. [2019-10-22 11:26:39,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 11:26:39,070 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:39,070 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:39,273 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:39,273 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:39,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:39,274 INFO L82 PathProgramCache]: Analyzing trace with hash -117082960, now seen corresponding path program 1 times [2019-10-22 11:26:39,275 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:26:39,275 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2067276559] [2019-10-22 11:26:39,275 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bafdffbc-a90c-41a1-bd73-1f383aa3c08c/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 11:26:39,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:39,479 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:26:39,480 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:26:39,510 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 11:26:39,513 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:26:39,539 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 11:26:39,542 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2067276559] [2019-10-22 11:26:39,542 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:39,542 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-10-22 11:26:39,542 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647289908] [2019-10-22 11:26:39,544 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:26:39,544 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:26:39,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:26:39,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:26:39,545 INFO L87 Difference]: Start difference. First operand 85 states and 120 transitions. Second operand 4 states. [2019-10-22 11:26:39,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:39,627 INFO L93 Difference]: Finished difference Result 292 states and 417 transitions. [2019-10-22 11:26:39,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:26:39,628 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2019-10-22 11:26:39,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:39,631 INFO L225 Difference]: With dead ends: 292 [2019-10-22 11:26:39,631 INFO L226 Difference]: Without dead ends: 213 [2019-10-22 11:26:39,632 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 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 11:26:39,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2019-10-22 11:26:39,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 126. [2019-10-22 11:26:39,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2019-10-22 11:26:39,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 180 transitions. [2019-10-22 11:26:39,668 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 180 transitions. Word has length 17 [2019-10-22 11:26:39,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:39,668 INFO L462 AbstractCegarLoop]: Abstraction has 126 states and 180 transitions. [2019-10-22 11:26:39,669 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:26:39,669 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 180 transitions. [2019-10-22 11:26:39,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-22 11:26:39,670 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:39,670 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:39,873 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:39,873 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:39,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:39,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1865659463, now seen corresponding path program 1 times [2019-10-22 11:26:39,874 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:26:39,875 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1838333035] [2019-10-22 11:26:39,875 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bafdffbc-a90c-41a1-bd73-1f383aa3c08c/bin/utaipan/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:40,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:40,039 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:26:40,040 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:26:40,047 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 11:26:40,047 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:26:40,049 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 11:26:40,050 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1838333035] [2019-10-22 11:26:40,050 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:40,050 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-22 11:26:40,051 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010796720] [2019-10-22 11:26:40,051 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:26:40,051 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:26:40,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:26:40,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:26:40,052 INFO L87 Difference]: Start difference. First operand 126 states and 180 transitions. Second operand 3 states. [2019-10-22 11:26:40,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:40,192 INFO L93 Difference]: Finished difference Result 291 states and 413 transitions. [2019-10-22 11:26:40,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:26:40,193 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2019-10-22 11:26:40,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:40,195 INFO L225 Difference]: With dead ends: 291 [2019-10-22 11:26:40,195 INFO L226 Difference]: Without dead ends: 171 [2019-10-22 11:26:40,196 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 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 11:26:40,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2019-10-22 11:26:40,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 165. [2019-10-22 11:26:40,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2019-10-22 11:26:40,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 226 transitions. [2019-10-22 11:26:40,240 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 226 transitions. Word has length 18 [2019-10-22 11:26:40,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:40,241 INFO L462 AbstractCegarLoop]: Abstraction has 165 states and 226 transitions. [2019-10-22 11:26:40,241 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:26:40,241 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 226 transitions. [2019-10-22 11:26:40,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-22 11:26:40,242 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:40,242 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:40,442 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:40,443 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:40,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:40,444 INFO L82 PathProgramCache]: Analyzing trace with hash -369678789, now seen corresponding path program 1 times [2019-10-22 11:26:40,444 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:26:40,445 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [756179317] [2019-10-22 11:26:40,445 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bafdffbc-a90c-41a1-bd73-1f383aa3c08c/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 11:26:40,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:40,624 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 11:26:40,626 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:26:40,652 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 11:26:40,652 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:26:40,693 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 11:26:40,694 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [756179317] [2019-10-22 11:26:40,694 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:40,694 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2019-10-22 11:26:40,695 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775494000] [2019-10-22 11:26:40,695 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 11:26:40,695 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:26:40,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 11:26:40,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:26:40,696 INFO L87 Difference]: Start difference. First operand 165 states and 226 transitions. Second operand 8 states. [2019-10-22 11:26:41,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:41,314 INFO L93 Difference]: Finished difference Result 1043 states and 1461 transitions. [2019-10-22 11:26:41,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-22 11:26:41,315 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2019-10-22 11:26:41,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:41,320 INFO L225 Difference]: With dead ends: 1043 [2019-10-22 11:26:41,323 INFO L226 Difference]: Without dead ends: 884 [2019-10-22 11:26:41,325 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2019-10-22 11:26:41,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2019-10-22 11:26:41,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 426. [2019-10-22 11:26:41,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2019-10-22 11:26:41,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 564 transitions. [2019-10-22 11:26:41,416 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 564 transitions. Word has length 24 [2019-10-22 11:26:41,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:41,419 INFO L462 AbstractCegarLoop]: Abstraction has 426 states and 564 transitions. [2019-10-22 11:26:41,420 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 11:26:41,420 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 564 transitions. [2019-10-22 11:26:41,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-22 11:26:41,425 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:41,425 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:41,626 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:41,626 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:41,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:41,627 INFO L82 PathProgramCache]: Analyzing trace with hash 415517223, now seen corresponding path program 1 times [2019-10-22 11:26:41,627 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:26:41,627 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1836688860] [2019-10-22 11:26:41,628 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bafdffbc-a90c-41a1-bd73-1f383aa3c08c/bin/utaipan/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:41,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:41,815 INFO L256 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 11:26:41,817 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:26:41,841 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 11:26:41,841 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:26:41,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:41,846 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1836688860] [2019-10-22 11:26:41,846 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:41,846 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-10-22 11:26:41,846 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339788346] [2019-10-22 11:26:41,846 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:26:41,847 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:26:41,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:26:41,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:26:41,847 INFO L87 Difference]: Start difference. First operand 426 states and 564 transitions. Second operand 5 states. [2019-10-22 11:26:42,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:42,007 INFO L93 Difference]: Finished difference Result 1310 states and 1707 transitions. [2019-10-22 11:26:42,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:26:42,008 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2019-10-22 11:26:42,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:42,012 INFO L225 Difference]: With dead ends: 1310 [2019-10-22 11:26:42,012 INFO L226 Difference]: Without dead ends: 890 [2019-10-22 11:26:42,013 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:26:42,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2019-10-22 11:26:42,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 453. [2019-10-22 11:26:42,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2019-10-22 11:26:42,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 591 transitions. [2019-10-22 11:26:42,065 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 591 transitions. Word has length 38 [2019-10-22 11:26:42,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:42,065 INFO L462 AbstractCegarLoop]: Abstraction has 453 states and 591 transitions. [2019-10-22 11:26:42,065 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:26:42,065 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 591 transitions. [2019-10-22 11:26:42,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-22 11:26:42,067 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:42,068 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:42,268 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:42,268 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:42,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:42,269 INFO L82 PathProgramCache]: Analyzing trace with hash 281503717, now seen corresponding path program 1 times [2019-10-22 11:26:42,269 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:26:42,270 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1726816024] [2019-10-22 11:26:42,270 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bafdffbc-a90c-41a1-bd73-1f383aa3c08c/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 11:26:42,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:42,440 INFO L256 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 11:26:42,442 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:26:42,459 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 11:26:42,459 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:26:42,480 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 11:26:42,481 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1726816024] [2019-10-22 11:26:42,481 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:42,481 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-10-22 11:26:42,481 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742317221] [2019-10-22 11:26:42,482 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 11:26:42,482 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:26:42,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 11:26:42,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:26:42,482 INFO L87 Difference]: Start difference. First operand 453 states and 591 transitions. Second operand 6 states. [2019-10-22 11:26:42,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:42,653 INFO L93 Difference]: Finished difference Result 1151 states and 1489 transitions. [2019-10-22 11:26:42,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:26:42,654 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2019-10-22 11:26:42,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:42,657 INFO L225 Difference]: With dead ends: 1151 [2019-10-22 11:26:42,657 INFO L226 Difference]: Without dead ends: 637 [2019-10-22 11:26:42,658 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:26:42,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2019-10-22 11:26:42,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 344. [2019-10-22 11:26:42,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2019-10-22 11:26:42,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 450 transitions. [2019-10-22 11:26:42,703 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 450 transitions. Word has length 38 [2019-10-22 11:26:42,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:42,704 INFO L462 AbstractCegarLoop]: Abstraction has 344 states and 450 transitions. [2019-10-22 11:26:42,704 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 11:26:42,704 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 450 transitions. [2019-10-22 11:26:42,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-10-22 11:26:42,707 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:42,707 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2019-10-22 11:26:42,907 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:42,908 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:42,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:42,909 INFO L82 PathProgramCache]: Analyzing trace with hash -249317709, now seen corresponding path program 1 times [2019-10-22 11:26:42,909 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:26:42,910 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1773215017] [2019-10-22 11:26:42,910 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bafdffbc-a90c-41a1-bd73-1f383aa3c08c/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 11:26:43,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:43,069 INFO L256 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 11:26:43,071 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:26:43,091 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-22 11:26:43,091 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:26:43,095 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-22 11:26:43,095 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1773215017] [2019-10-22 11:26:43,095 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:43,095 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-10-22 11:26:43,096 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786362836] [2019-10-22 11:26:43,099 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:26:43,100 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:26:43,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:26:43,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:26:43,100 INFO L87 Difference]: Start difference. First operand 344 states and 450 transitions. Second operand 5 states. [2019-10-22 11:26:43,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:43,463 INFO L93 Difference]: Finished difference Result 883 states and 1154 transitions. [2019-10-22 11:26:43,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-22 11:26:43,463 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2019-10-22 11:26:43,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:43,467 INFO L225 Difference]: With dead ends: 883 [2019-10-22 11:26:43,467 INFO L226 Difference]: Without dead ends: 877 [2019-10-22 11:26:43,468 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-22 11:26:43,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2019-10-22 11:26:43,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 344. [2019-10-22 11:26:43,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2019-10-22 11:26:43,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 444 transitions. [2019-10-22 11:26:43,515 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 444 transitions. Word has length 40 [2019-10-22 11:26:43,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:43,516 INFO L462 AbstractCegarLoop]: Abstraction has 344 states and 444 transitions. [2019-10-22 11:26:43,516 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:26:43,516 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 444 transitions. [2019-10-22 11:26:43,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-10-22 11:26:43,519 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:43,519 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:43,720 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:43,721 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:43,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:43,721 INFO L82 PathProgramCache]: Analyzing trace with hash -2093548753, now seen corresponding path program 1 times [2019-10-22 11:26:43,722 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:26:43,722 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2060172662] [2019-10-22 11:26:43,722 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bafdffbc-a90c-41a1-bd73-1f383aa3c08c/bin/utaipan/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:43,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:43,889 INFO L256 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:26:43,891 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:26:43,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:43,905 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:26:43,911 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:43,911 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2060172662] [2019-10-22 11:26:43,911 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:43,911 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-22 11:26:43,912 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125658010] [2019-10-22 11:26:43,912 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:26:43,913 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:26:43,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:26:43,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:26:43,913 INFO L87 Difference]: Start difference. First operand 344 states and 444 transitions. Second operand 3 states. [2019-10-22 11:26:43,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:43,942 INFO L93 Difference]: Finished difference Result 344 states and 444 transitions. [2019-10-22 11:26:43,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:26:43,944 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2019-10-22 11:26:43,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:43,946 INFO L225 Difference]: With dead ends: 344 [2019-10-22 11:26:43,946 INFO L226 Difference]: Without dead ends: 180 [2019-10-22 11:26:43,946 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 83 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 11:26:43,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2019-10-22 11:26:43,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2019-10-22 11:26:43,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2019-10-22 11:26:43,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 242 transitions. [2019-10-22 11:26:43,982 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 242 transitions. Word has length 43 [2019-10-22 11:26:43,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:43,983 INFO L462 AbstractCegarLoop]: Abstraction has 180 states and 242 transitions. [2019-10-22 11:26:43,983 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:26:43,983 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 242 transitions. [2019-10-22 11:26:43,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-10-22 11:26:43,985 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:43,986 INFO L380 BasicCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:44,186 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:44,187 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:44,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:44,188 INFO L82 PathProgramCache]: Analyzing trace with hash -423849614, now seen corresponding path program 1 times [2019-10-22 11:26:44,188 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:26:44,188 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1052467380] [2019-10-22 11:26:44,189 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bafdffbc-a90c-41a1-bd73-1f383aa3c08c/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 11:26:44,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:44,376 INFO L256 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 11:26:44,378 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:26:44,416 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-22 11:26:44,417 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:26:44,477 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-22 11:26:44,477 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1052467380] [2019-10-22 11:26:44,490 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223059079] [2019-10-22 11:26:44,490 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bafdffbc-a90c-41a1-bd73-1f383aa3c08c/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 11:26:44,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:44,615 INFO L256 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 11:26:44,617 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:26:44,625 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-22 11:26:44,625 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:26:44,638 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-22 11:26:44,639 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-22 11:26:44,639 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5] total 9 [2019-10-22 11:26:44,639 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798666737] [2019-10-22 11:26:44,639 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-22 11:26:44,640 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:26:44,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-22 11:26:44,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-22 11:26:44,640 INFO L87 Difference]: Start difference. First operand 180 states and 242 transitions. Second operand 10 states. [2019-10-22 11:26:45,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:45,451 INFO L93 Difference]: Finished difference Result 1066 states and 1487 transitions. [2019-10-22 11:26:45,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-10-22 11:26:45,452 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 48 [2019-10-22 11:26:45,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:45,457 INFO L225 Difference]: With dead ends: 1066 [2019-10-22 11:26:45,457 INFO L226 Difference]: Without dead ends: 933 [2019-10-22 11:26:45,458 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2019-10-22 11:26:45,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2019-10-22 11:26:45,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 300. [2019-10-22 11:26:45,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2019-10-22 11:26:45,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 410 transitions. [2019-10-22 11:26:45,506 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 410 transitions. Word has length 48 [2019-10-22 11:26:45,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:45,506 INFO L462 AbstractCegarLoop]: Abstraction has 300 states and 410 transitions. [2019-10-22 11:26:45,506 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-22 11:26:45,507 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 410 transitions. [2019-10-22 11:26:45,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-10-22 11:26:45,507 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:45,507 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:45,908 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 11:26:45,909 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:45,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:45,909 INFO L82 PathProgramCache]: Analyzing trace with hash -568509983, now seen corresponding path program 2 times [2019-10-22 11:26:45,910 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:26:45,910 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [300811378] [2019-10-22 11:26:45,910 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bafdffbc-a90c-41a1-bd73-1f383aa3c08c/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 11:26:47,802 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 11:26:47,802 INFO L250 tOrderPrioritization]: Conjunction of SSA is sat [2019-10-22 11:26:49,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:26:50,230 INFO L168 tionRefinementEngine]: Strategy WALRUS found a feasible trace [2019-10-22 11:26:50,230 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 11:26:50,430 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:50,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:26:50 BoogieIcfgContainer [2019-10-22 11:26:50,608 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:26:50,608 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:26:50,608 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:26:50,609 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:26:50,609 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:38" (3/4) ... [2019-10-22 11:26:50,612 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 11:26:50,735 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_bafdffbc-a90c-41a1-bd73-1f383aa3c08c/bin/utaipan/witness.graphml [2019-10-22 11:26:50,735 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:26:50,738 INFO L168 Benchmark]: Toolchain (without parser) took 13974.32 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 282.1 MB). Free memory was 948.3 MB in the beginning and 1.0 GB in the end (delta: -61.9 MB). Peak memory consumption was 220.1 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:50,738 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 972.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:26:50,739 INFO L168 Benchmark]: CACSL2BoogieTranslator took 609.21 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.2 MB). Free memory was 948.3 MB in the beginning and 1.1 GB in the end (delta: -198.9 MB). Peak memory consumption was 30.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:50,739 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.75 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: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:50,739 INFO L168 Benchmark]: Boogie Preprocessor took 48.19 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:50,740 INFO L168 Benchmark]: RCFGBuilder took 1038.61 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: 57.4 MB). Peak memory consumption was 57.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:50,740 INFO L168 Benchmark]: TraceAbstraction took 12081.68 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 116.9 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 46.5 MB). Peak memory consumption was 163.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:50,741 INFO L168 Benchmark]: Witness Printer took 127.18 ms. Allocated memory is still 1.3 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 24.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:50,743 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 972.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 609.21 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.2 MB). Free memory was 948.3 MB in the beginning and 1.1 GB in the end (delta: -198.9 MB). Peak memory consumption was 30.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 64.75 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: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 48.19 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1038.61 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: 57.4 MB). Peak memory consumption was 57.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 12081.68 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 116.9 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 46.5 MB). Peak memory consumption was 163.4 MB. Max. memory is 11.5 GB. * Witness Printer took 127.18 ms. Allocated memory is still 1.3 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 24.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 310]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L120] int pumpRunning = 0; [L121] int systemActive = 1; [L315] int cleanupTimeShifts = 4; [L415] int waterLevel = 1; [L416] int methaneLevelCritical = 0; [L713] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L391] int retValue_acc ; [L392] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L535] int retValue_acc ; [L538] retValue_acc = 1 [L539] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L398] tmp = valid_product() [L400] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L46] int splverifierCounter ; [L47] int tmp ; [L48] int tmp___0 ; [L49] int tmp___1 ; [L50] int tmp___2 ; [L53] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L55] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L57] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L63] tmp = __VERIFIER_nondet_int() [L65] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L433] COND TRUE waterLevel < 2 [L434] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L73] tmp___0 = __VERIFIER_nondet_int() [L75] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L83] tmp___2 = __VERIFIER_nondet_int() [L85] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L128] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L135] COND TRUE \read(systemActive) [L157] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L160] COND TRUE ! pumpRunning [L272] int retValue_acc ; [L273] int tmp ; [L274] int tmp___0 ; [L495] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L498] COND FALSE !(waterLevel < 2) [L502] retValue_acc = 0 [L503] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L278] tmp = isHighWaterSensorDry() [L280] COND FALSE !(\read(tmp)) [L283] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L285] retValue_acc = tmp___0 [L286] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L162] tmp = isHighWaterLevel() [L164] COND TRUE \read(tmp) [L191] int tmp ; [L216] int retValue_acc ; [L454] int retValue_acc ; [L457] retValue_acc = methaneLevelCritical [L458] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L220] retValue_acc = isMethaneLevelCritical() [L222] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L195] tmp = isMethaneAlarm() [L197] COND FALSE !(\read(tmp)) [L185] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L911] int tmp ; [L912] int tmp___0 ; [L486] int retValue_acc ; [L489] retValue_acc = waterLevel [L490] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L916] tmp = getWaterLevel() [L918] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L55] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L57] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L63] tmp = __VERIFIER_nondet_int() [L65] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L73] tmp___0 = __VERIFIER_nondet_int() [L75] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L83] tmp___2 = __VERIFIER_nondet_int() [L85] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L128] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L421] COND TRUE waterLevel > 0 [L422] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L135] COND TRUE \read(systemActive) [L157] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L160] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L911] int tmp ; [L912] int tmp___0 ; [L486] int retValue_acc ; [L489] retValue_acc = waterLevel [L490] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L916] tmp = getWaterLevel() [L918] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L55] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L57] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L63] tmp = __VERIFIER_nondet_int() [L65] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L73] tmp___0 = __VERIFIER_nondet_int() [L75] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L83] tmp___2 = __VERIFIER_nondet_int() [L85] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L128] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L421] COND TRUE waterLevel > 0 [L422] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L135] COND TRUE \read(systemActive) [L157] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L160] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L911] int tmp ; [L912] int tmp___0 ; [L486] int retValue_acc ; [L489] retValue_acc = waterLevel [L490] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L916] tmp = getWaterLevel() [L918] COND TRUE tmp == 0 [L227] int retValue_acc ; [L230] retValue_acc = pumpRunning [L231] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L920] tmp___0 = isPumpRunning() [L922] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L310] __VERIFIER_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 89 locations, 3 error locations. Result: UNSAFE, OverallTime: 11.9s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 1313 SDtfs, 3171 SDslu, 3202 SDs, 0 SdLazy, 562 SolverSat, 178 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 679 GetRequests, 618 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=453occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 2447 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.5s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 393 NumberOfCodeBlocks, 393 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 640 ConstructedInterpolants, 0 QuantifiedInterpolants, 57078 SizeOfPredicates, 24 NumberOfNonLiveVariables, 1981 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 20 InterpolantComputations, 16 PerfectInterpolantSequences, 52/88 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...