./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product39.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_175894f3-76b6-4e20-aeaf-2c3a2950ebdc/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_175894f3-76b6-4e20-aeaf-2c3a2950ebdc/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_175894f3-76b6-4e20-aeaf-2c3a2950ebdc/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_175894f3-76b6-4e20-aeaf-2c3a2950ebdc/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_175894f3-76b6-4e20-aeaf-2c3a2950ebdc/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_175894f3-76b6-4e20-aeaf-2c3a2950ebdc/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 c228d9f74ddd17cda7010ca670107d7221f92470 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_175894f3-76b6-4e20-aeaf-2c3a2950ebdc/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_175894f3-76b6-4e20-aeaf-2c3a2950ebdc/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_175894f3-76b6-4e20-aeaf-2c3a2950ebdc/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_175894f3-76b6-4e20-aeaf-2c3a2950ebdc/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_175894f3-76b6-4e20-aeaf-2c3a2950ebdc/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_175894f3-76b6-4e20-aeaf-2c3a2950ebdc/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 c228d9f74ddd17cda7010ca670107d7221f92470 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 11:27:00,937 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:27:00,939 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:27:00,950 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:27:00,950 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:27:00,951 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:27:00,952 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:27:00,954 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:27:00,956 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:27:00,956 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:27:00,957 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:27:00,959 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:27:00,959 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:27:00,960 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:27:00,961 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:27:00,962 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:27:00,963 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:27:00,963 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:27:00,965 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:27:00,967 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:27:00,968 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:27:00,969 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:27:00,970 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:27:00,971 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:27:00,973 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:27:00,974 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:27:00,974 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:27:00,975 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:27:00,975 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:27:00,976 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:27:00,977 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:27:00,977 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:27:00,978 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:27:00,979 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:27:00,980 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:27:00,980 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:27:00,981 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:27:00,981 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:27:00,981 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:27:00,982 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:27:00,983 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:27:00,984 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_175894f3-76b6-4e20-aeaf-2c3a2950ebdc/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:27:00,997 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:27:00,997 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:27:00,998 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:27:00,998 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:27:00,998 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:27:00,998 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:27:00,999 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:27:00,999 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:27:00,999 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:27:00,999 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:27:01,000 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:27:01,000 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:27:01,001 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:27:01,001 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:27:01,001 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:27:01,001 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:27:01,002 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:27:01,002 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:27:01,002 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:27:01,002 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:27:01,002 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:27:01,003 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:27:01,003 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:27:01,003 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:27:01,003 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:27:01,004 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:27:01,004 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:27:01,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:27:01,004 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:27:01,004 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:27:01,005 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:27:01,005 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:27:01,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:27:01,005 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:27:01,006 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:27:01,006 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_175894f3-76b6-4e20-aeaf-2c3a2950ebdc/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 -> c228d9f74ddd17cda7010ca670107d7221f92470 [2019-10-22 11:27:01,035 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:27:01,047 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:27:01,051 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:27:01,052 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:27:01,053 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:27:01,053 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_175894f3-76b6-4e20-aeaf-2c3a2950ebdc/bin/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c [2019-10-22 11:27:01,108 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_175894f3-76b6-4e20-aeaf-2c3a2950ebdc/bin/utaipan/data/786ef5bc9/2459d11892ce4a7ba6c53360fcc0b20c/FLAGdda1e7e76 [2019-10-22 11:27:01,561 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:27:01,561 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_175894f3-76b6-4e20-aeaf-2c3a2950ebdc/sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c [2019-10-22 11:27:01,575 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_175894f3-76b6-4e20-aeaf-2c3a2950ebdc/bin/utaipan/data/786ef5bc9/2459d11892ce4a7ba6c53360fcc0b20c/FLAGdda1e7e76 [2019-10-22 11:27:01,925 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_175894f3-76b6-4e20-aeaf-2c3a2950ebdc/bin/utaipan/data/786ef5bc9/2459d11892ce4a7ba6c53360fcc0b20c [2019-10-22 11:27:01,928 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:27:01,929 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:27:01,930 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:27:01,930 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:27:01,934 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:27:01,935 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:27:01" (1/1) ... [2019-10-22 11:27:01,938 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bcd7b63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:27:01, skipping insertion in model container [2019-10-22 11:27:01,938 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:27:01" (1/1) ... [2019-10-22 11:27:01,945 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:27:02,002 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:27:02,399 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:27:02,422 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:27:02,565 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:27:02,598 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:27:02,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:27:02 WrapperNode [2019-10-22 11:27:02,599 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:27:02,600 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:27:02,600 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:27:02,600 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:27:02,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:27:02" (1/1) ... [2019-10-22 11:27:02,627 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:27:02" (1/1) ... [2019-10-22 11:27:02,672 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:27:02,672 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:27:02,672 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:27:02,673 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:27:02,684 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:27:02" (1/1) ... [2019-10-22 11:27:02,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:27:02" (1/1) ... [2019-10-22 11:27:02,689 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:27:02" (1/1) ... [2019-10-22 11:27:02,689 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:27:02" (1/1) ... [2019-10-22 11:27:02,717 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:27:02" (1/1) ... [2019-10-22 11:27:02,726 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:27:02" (1/1) ... [2019-10-22 11:27:02,729 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:27:02" (1/1) ... [2019-10-22 11:27:02,742 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:27:02,746 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:27:02,747 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:27:02,747 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:27:02,748 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:27:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_175894f3-76b6-4e20-aeaf-2c3a2950ebdc/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 11:27:02,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:27:02,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-22 11:27:02,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:27:02,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:27:03,644 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:27:03,644 INFO L284 CfgBuilder]: Removed 160 assume(true) statements. [2019-10-22 11:27:03,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:27:03 BoogieIcfgContainer [2019-10-22 11:27:03,645 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:27:03,646 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:27:03,646 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:27:03,649 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:27:03,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:27:01" (1/3) ... [2019-10-22 11:27:03,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54120a14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:27:03, skipping insertion in model container [2019-10-22 11:27:03,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:27:02" (2/3) ... [2019-10-22 11:27:03,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54120a14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:27:03, skipping insertion in model container [2019-10-22 11:27:03,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:27:03" (3/3) ... [2019-10-22 11:27:03,653 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product39.cil.c [2019-10-22 11:27:03,662 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:27:03,669 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-10-22 11:27:03,677 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-10-22 11:27:03,703 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:27:03,703 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:27:03,703 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:27:03,703 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:27:03,703 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:27:03,703 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:27:03,704 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:27:03,704 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:27:03,721 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states. [2019-10-22 11:27:03,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-22 11:27:03,727 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:27:03,728 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:27:03,730 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:27:03,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:27:03,736 INFO L82 PathProgramCache]: Analyzing trace with hash 1221872895, now seen corresponding path program 1 times [2019-10-22 11:27:03,744 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:27:03,745 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697536312] [2019-10-22 11:27:03,745 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:27:03,745 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:27:03,745 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:27:03,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:27:03,960 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 11:27:03,961 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697536312] [2019-10-22 11:27:03,962 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:27:03,962 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:27:03,963 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537756564] [2019-10-22 11:27:03,968 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:27:03,969 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:27:03,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:27:03,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:27:03,987 INFO L87 Difference]: Start difference. First operand 113 states. Second operand 2 states. [2019-10-22 11:27:04,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:27:04,022 INFO L93 Difference]: Finished difference Result 220 states and 335 transitions. [2019-10-22 11:27:04,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:27:04,024 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-10-22 11:27:04,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:27:04,035 INFO L225 Difference]: With dead ends: 220 [2019-10-22 11:27:04,035 INFO L226 Difference]: Without dead ends: 109 [2019-10-22 11:27:04,038 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 11:27:04,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2019-10-22 11:27:04,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2019-10-22 11:27:04,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2019-10-22 11:27:04,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 159 transitions. [2019-10-22 11:27:04,082 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 159 transitions. Word has length 16 [2019-10-22 11:27:04,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:27:04,082 INFO L462 AbstractCegarLoop]: Abstraction has 109 states and 159 transitions. [2019-10-22 11:27:04,082 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:27:04,082 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 159 transitions. [2019-10-22 11:27:04,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 11:27:04,083 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:27:04,084 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 11:27:04,084 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:27:04,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:27:04,084 INFO L82 PathProgramCache]: Analyzing trace with hash 175115998, now seen corresponding path program 1 times [2019-10-22 11:27:04,085 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:27:04,085 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607781982] [2019-10-22 11:27:04,085 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:27:04,085 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:27:04,085 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:27:04,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:27:04,170 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 11:27:04,170 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607781982] [2019-10-22 11:27:04,170 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:27:04,170 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:27:04,171 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442305214] [2019-10-22 11:27:04,172 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:27:04,172 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:27:04,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:27:04,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:27:04,173 INFO L87 Difference]: Start difference. First operand 109 states and 159 transitions. Second operand 3 states. [2019-10-22 11:27:04,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:27:04,187 INFO L93 Difference]: Finished difference Result 109 states and 159 transitions. [2019-10-22 11:27:04,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:27:04,188 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-10-22 11:27:04,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:27:04,189 INFO L225 Difference]: With dead ends: 109 [2019-10-22 11:27:04,189 INFO L226 Difference]: Without dead ends: 47 [2019-10-22 11:27:04,190 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 11:27:04,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-10-22 11:27:04,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2019-10-22 11:27:04,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-10-22 11:27:04,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 68 transitions. [2019-10-22 11:27:04,196 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 68 transitions. Word has length 17 [2019-10-22 11:27:04,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:27:04,197 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 68 transitions. [2019-10-22 11:27:04,197 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:27:04,197 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 68 transitions. [2019-10-22 11:27:04,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-22 11:27:04,198 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:27:04,198 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 11:27:04,198 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:27:04,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:27:04,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1744081540, now seen corresponding path program 1 times [2019-10-22 11:27:04,199 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:27:04,199 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247828545] [2019-10-22 11:27:04,200 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:27:04,200 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:27:04,200 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:27:04,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:27:04,294 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 11:27:04,294 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247828545] [2019-10-22 11:27:04,294 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:27:04,294 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:27:04,295 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615859398] [2019-10-22 11:27:04,295 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:27:04,295 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:27:04,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:27:04,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:27:04,296 INFO L87 Difference]: Start difference. First operand 47 states and 68 transitions. Second operand 3 states. [2019-10-22 11:27:04,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:27:04,346 INFO L93 Difference]: Finished difference Result 129 states and 192 transitions. [2019-10-22 11:27:04,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:27:04,348 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2019-10-22 11:27:04,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:27:04,350 INFO L225 Difference]: With dead ends: 129 [2019-10-22 11:27:04,350 INFO L226 Difference]: Without dead ends: 88 [2019-10-22 11:27:04,351 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 11:27:04,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2019-10-22 11:27:04,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2019-10-22 11:27:04,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2019-10-22 11:27:04,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 125 transitions. [2019-10-22 11:27:04,371 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 125 transitions. Word has length 22 [2019-10-22 11:27:04,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:27:04,371 INFO L462 AbstractCegarLoop]: Abstraction has 84 states and 125 transitions. [2019-10-22 11:27:04,371 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:27:04,371 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 125 transitions. [2019-10-22 11:27:04,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-22 11:27:04,372 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:27:04,372 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 11:27:04,373 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:27:04,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:27:04,373 INFO L82 PathProgramCache]: Analyzing trace with hash -595366227, now seen corresponding path program 1 times [2019-10-22 11:27:04,373 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:27:04,373 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306319139] [2019-10-22 11:27:04,374 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:27:04,374 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:27:04,374 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:27:04,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:27:04,461 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 11:27:04,461 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306319139] [2019-10-22 11:27:04,461 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:27:04,462 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:27:04,462 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115897345] [2019-10-22 11:27:04,462 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:27:04,462 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:27:04,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:27:04,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:27:04,463 INFO L87 Difference]: Start difference. First operand 84 states and 125 transitions. Second operand 3 states. [2019-10-22 11:27:04,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:27:04,533 INFO L93 Difference]: Finished difference Result 203 states and 306 transitions. [2019-10-22 11:27:04,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:27:04,534 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2019-10-22 11:27:04,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:27:04,535 INFO L225 Difference]: With dead ends: 203 [2019-10-22 11:27:04,535 INFO L226 Difference]: Without dead ends: 125 [2019-10-22 11:27:04,536 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 11:27:04,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2019-10-22 11:27:04,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 123. [2019-10-22 11:27:04,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2019-10-22 11:27:04,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 179 transitions. [2019-10-22 11:27:04,554 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 179 transitions. Word has length 24 [2019-10-22 11:27:04,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:27:04,554 INFO L462 AbstractCegarLoop]: Abstraction has 123 states and 179 transitions. [2019-10-22 11:27:04,558 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:27:04,559 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 179 transitions. [2019-10-22 11:27:04,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-22 11:27:04,559 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:27:04,560 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 11:27:04,560 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:27:04,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:27:04,560 INFO L82 PathProgramCache]: Analyzing trace with hash 566175321, now seen corresponding path program 1 times [2019-10-22 11:27:04,561 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:27:04,561 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412422887] [2019-10-22 11:27:04,561 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:27:04,561 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:27:04,561 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:27:04,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:27:04,639 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 11:27:04,639 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412422887] [2019-10-22 11:27:04,639 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:27:04,640 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:27:04,640 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079482101] [2019-10-22 11:27:04,640 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:27:04,640 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:27:04,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:27:04,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:27:04,641 INFO L87 Difference]: Start difference. First operand 123 states and 179 transitions. Second operand 5 states. [2019-10-22 11:27:04,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:27:04,784 INFO L93 Difference]: Finished difference Result 439 states and 645 transitions. [2019-10-22 11:27:04,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:27:04,785 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2019-10-22 11:27:04,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:27:04,787 INFO L225 Difference]: With dead ends: 439 [2019-10-22 11:27:04,788 INFO L226 Difference]: Without dead ends: 322 [2019-10-22 11:27:04,789 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 11:27:04,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2019-10-22 11:27:04,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 206. [2019-10-22 11:27:04,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2019-10-22 11:27:04,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 290 transitions. [2019-10-22 11:27:04,833 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 290 transitions. Word has length 25 [2019-10-22 11:27:04,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:27:04,834 INFO L462 AbstractCegarLoop]: Abstraction has 206 states and 290 transitions. [2019-10-22 11:27:04,834 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:27:04,834 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 290 transitions. [2019-10-22 11:27:04,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-10-22 11:27:04,841 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:27:04,842 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 11:27:04,842 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:27:04,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:27:04,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1393133669, now seen corresponding path program 1 times [2019-10-22 11:27:04,843 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:27:04,843 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000459899] [2019-10-22 11:27:04,843 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:27:04,843 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:27:04,843 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:27:04,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:27:04,933 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 11:27:04,934 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000459899] [2019-10-22 11:27:04,934 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:27:04,934 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:27:04,934 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221453163] [2019-10-22 11:27:04,935 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:27:04,935 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:27:04,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:27:04,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:27:04,936 INFO L87 Difference]: Start difference. First operand 206 states and 290 transitions. Second operand 5 states. [2019-10-22 11:27:05,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:27:05,104 INFO L93 Difference]: Finished difference Result 438 states and 630 transitions. [2019-10-22 11:27:05,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-22 11:27:05,106 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2019-10-22 11:27:05,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:27:05,108 INFO L225 Difference]: With dead ends: 438 [2019-10-22 11:27:05,109 INFO L226 Difference]: Without dead ends: 436 [2019-10-22 11:27:05,109 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 11:27:05,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2019-10-22 11:27:05,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 206. [2019-10-22 11:27:05,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2019-10-22 11:27:05,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 288 transitions. [2019-10-22 11:27:05,145 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 288 transitions. Word has length 26 [2019-10-22 11:27:05,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:27:05,145 INFO L462 AbstractCegarLoop]: Abstraction has 206 states and 288 transitions. [2019-10-22 11:27:05,145 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:27:05,146 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 288 transitions. [2019-10-22 11:27:05,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-22 11:27:05,148 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:27:05,149 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] [2019-10-22 11:27:05,149 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:27:05,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:27:05,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1756729668, now seen corresponding path program 1 times [2019-10-22 11:27:05,150 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:27:05,150 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160978071] [2019-10-22 11:27:05,150 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:27:05,150 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:27:05,151 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:27:05,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:27:05,230 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 11:27:05,230 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160978071] [2019-10-22 11:27:05,231 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:27:05,231 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:27:05,231 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706034207] [2019-10-22 11:27:05,231 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:27:05,232 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:27:05,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:27:05,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:27:05,232 INFO L87 Difference]: Start difference. First operand 206 states and 288 transitions. Second operand 5 states. [2019-10-22 11:27:05,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:27:05,321 INFO L93 Difference]: Finished difference Result 577 states and 799 transitions. [2019-10-22 11:27:05,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:27:05,322 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2019-10-22 11:27:05,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:27:05,324 INFO L225 Difference]: With dead ends: 577 [2019-10-22 11:27:05,324 INFO L226 Difference]: Without dead ends: 377 [2019-10-22 11:27:05,325 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 11:27:05,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2019-10-22 11:27:05,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 224. [2019-10-22 11:27:05,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2019-10-22 11:27:05,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 306 transitions. [2019-10-22 11:27:05,346 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 306 transitions. Word has length 31 [2019-10-22 11:27:05,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:27:05,348 INFO L462 AbstractCegarLoop]: Abstraction has 224 states and 306 transitions. [2019-10-22 11:27:05,348 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:27:05,349 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 306 transitions. [2019-10-22 11:27:05,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-22 11:27:05,350 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:27:05,350 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] [2019-10-22 11:27:05,350 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:27:05,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:27:05,351 INFO L82 PathProgramCache]: Analyzing trace with hash 2145210618, now seen corresponding path program 1 times [2019-10-22 11:27:05,351 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:27:05,351 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818237224] [2019-10-22 11:27:05,351 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:27:05,351 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:27:05,352 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:27:05,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:27:05,427 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 11:27:05,427 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818237224] [2019-10-22 11:27:05,427 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:27:05,428 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:27:05,428 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882045790] [2019-10-22 11:27:05,428 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:27:05,428 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:27:05,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:27:05,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:27:05,429 INFO L87 Difference]: Start difference. First operand 224 states and 306 transitions. Second operand 5 states. [2019-10-22 11:27:05,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:27:05,548 INFO L93 Difference]: Finished difference Result 555 states and 749 transitions. [2019-10-22 11:27:05,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-22 11:27:05,549 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2019-10-22 11:27:05,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:27:05,551 INFO L225 Difference]: With dead ends: 555 [2019-10-22 11:27:05,551 INFO L226 Difference]: Without dead ends: 337 [2019-10-22 11:27:05,552 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 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 11:27:05,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2019-10-22 11:27:05,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 193. [2019-10-22 11:27:05,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2019-10-22 11:27:05,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 258 transitions. [2019-10-22 11:27:05,570 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 258 transitions. Word has length 31 [2019-10-22 11:27:05,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:27:05,571 INFO L462 AbstractCegarLoop]: Abstraction has 193 states and 258 transitions. [2019-10-22 11:27:05,571 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:27:05,571 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 258 transitions. [2019-10-22 11:27:05,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-22 11:27:05,572 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:27:05,572 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] [2019-10-22 11:27:05,572 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:27:05,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:27:05,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1891591240, now seen corresponding path program 1 times [2019-10-22 11:27:05,573 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:27:05,573 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267431136] [2019-10-22 11:27:05,573 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:27:05,574 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:27:05,574 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:27:05,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:27:05,621 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 11:27:05,621 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267431136] [2019-10-22 11:27:05,621 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:27:05,622 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:27:05,622 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695561584] [2019-10-22 11:27:05,622 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:27:05,623 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:27:05,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:27:05,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:27:05,623 INFO L87 Difference]: Start difference. First operand 193 states and 258 transitions. Second operand 5 states. [2019-10-22 11:27:05,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:27:05,773 INFO L93 Difference]: Finished difference Result 534 states and 732 transitions. [2019-10-22 11:27:05,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:27:05,773 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2019-10-22 11:27:05,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:27:05,775 INFO L225 Difference]: With dead ends: 534 [2019-10-22 11:27:05,775 INFO L226 Difference]: Without dead ends: 397 [2019-10-22 11:27:05,776 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 11:27:05,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2019-10-22 11:27:05,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 278. [2019-10-22 11:27:05,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2019-10-22 11:27:05,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 367 transitions. [2019-10-22 11:27:05,800 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 367 transitions. Word has length 31 [2019-10-22 11:27:05,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:27:05,800 INFO L462 AbstractCegarLoop]: Abstraction has 278 states and 367 transitions. [2019-10-22 11:27:05,800 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:27:05,800 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 367 transitions. [2019-10-22 11:27:05,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-10-22 11:27:05,801 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:27:05,802 INFO L380 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2019-10-22 11:27:05,802 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:27:05,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:27:05,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1736126716, now seen corresponding path program 1 times [2019-10-22 11:27:05,802 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:27:05,805 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667879785] [2019-10-22 11:27:05,805 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:27:05,805 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:27:05,805 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:27:05,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:27:05,874 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-22 11:27:05,875 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667879785] [2019-10-22 11:27:05,875 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:27:05,875 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:27:05,875 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816117308] [2019-10-22 11:27:05,875 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:27:05,876 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:27:05,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:27:05,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:27:05,876 INFO L87 Difference]: Start difference. First operand 278 states and 367 transitions. Second operand 3 states. [2019-10-22 11:27:05,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:27:05,930 INFO L93 Difference]: Finished difference Result 344 states and 454 transitions. [2019-10-22 11:27:05,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:27:05,931 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2019-10-22 11:27:05,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:27:05,932 INFO L225 Difference]: With dead ends: 344 [2019-10-22 11:27:05,932 INFO L226 Difference]: Without dead ends: 139 [2019-10-22 11:27:05,933 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 11:27:05,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2019-10-22 11:27:05,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2019-10-22 11:27:05,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2019-10-22 11:27:05,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 175 transitions. [2019-10-22 11:27:05,944 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 175 transitions. Word has length 48 [2019-10-22 11:27:05,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:27:05,945 INFO L462 AbstractCegarLoop]: Abstraction has 139 states and 175 transitions. [2019-10-22 11:27:05,945 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:27:05,946 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 175 transitions. [2019-10-22 11:27:05,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-10-22 11:27:05,946 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:27:05,946 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, 1, 1] [2019-10-22 11:27:05,947 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:27:05,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:27:05,947 INFO L82 PathProgramCache]: Analyzing trace with hash -2038322788, now seen corresponding path program 1 times [2019-10-22 11:27:05,947 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:27:05,947 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785189088] [2019-10-22 11:27:05,947 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:27:05,947 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:27:05,948 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:27:05,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:27:06,009 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 11:27:06,009 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785189088] [2019-10-22 11:27:06,009 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707258100] [2019-10-22 11:27:06,009 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_175894f3-76b6-4e20-aeaf-2c3a2950ebdc/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 11:27:06,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:27:06,119 INFO L256 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 11:27:06,125 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:27:06,157 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 11:27:06,157 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:27:06,189 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 11:27:06,190 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [2006353815] [2019-10-22 11:27:06,196 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 51 [2019-10-22 11:27:06,241 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-10-22 11:27:06,241 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-22 11:27:06,697 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:27:06,698 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 11:27:06,706 INFO L168 Benchmark]: Toolchain (without parser) took 4776.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 208.7 MB). Free memory was 945.9 MB in the beginning and 1.1 GB in the end (delta: -142.2 MB). Peak memory consumption was 66.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:27:06,714 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:27:06,715 INFO L168 Benchmark]: CACSL2BoogieTranslator took 669.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 945.9 MB in the beginning and 1.1 GB in the end (delta: -166.1 MB). Peak memory consumption was 17.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:27:06,715 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.15 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-10-22 11:27:06,716 INFO L168 Benchmark]: Boogie Preprocessor took 73.87 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 11:27:06,716 INFO L168 Benchmark]: RCFGBuilder took 898.95 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: 76.5 MB). Peak memory consumption was 76.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:27:06,717 INFO L168 Benchmark]: TraceAbstraction took 3057.80 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 79.2 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -59.4 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:27:06,719 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 669.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 945.9 MB in the beginning and 1.1 GB in the end (delta: -166.1 MB). Peak memory consumption was 17.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 72.15 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 73.87 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 898.95 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: 76.5 MB). Peak memory consumption was 76.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3057.80 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 79.2 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -59.4 MB). Peak memory consumption was 19.7 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 11:27:09,055 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:27:09,058 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:27:09,070 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:27:09,074 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:27:09,075 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:27:09,076 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:27:09,078 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:27:09,080 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:27:09,081 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:27:09,081 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:27:09,082 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:27:09,083 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:27:09,084 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:27:09,084 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:27:09,085 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:27:09,086 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:27:09,087 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:27:09,089 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:27:09,090 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:27:09,092 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:27:09,093 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:27:09,094 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:27:09,095 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:27:09,097 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:27:09,097 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:27:09,097 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:27:09,098 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:27:09,099 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:27:09,100 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:27:09,100 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:27:09,101 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:27:09,101 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:27:09,102 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:27:09,103 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:27:09,103 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:27:09,104 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:27:09,104 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:27:09,104 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:27:09,105 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:27:09,106 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:27:09,107 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_175894f3-76b6-4e20-aeaf-2c3a2950ebdc/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-10-22 11:27:09,120 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:27:09,120 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:27:09,121 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:27:09,121 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:27:09,122 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:27:09,122 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:27:09,122 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:27:09,122 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:27:09,122 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:27:09,123 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:27:09,123 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:27:09,123 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:27:09,123 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:27:09,124 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:27:09,124 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:27:09,124 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:27:09,124 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-10-22 11:27:09,124 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-10-22 11:27:09,125 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:27:09,125 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:27:09,125 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 11:27:09,125 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:27:09,125 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:27:09,125 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:27:09,126 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:27:09,126 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:27:09,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:27:09,126 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:27:09,126 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:27:09,127 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:27:09,127 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-10-22 11:27:09,127 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-10-22 11:27:09,127 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:27:09,127 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:27:09,128 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_175894f3-76b6-4e20-aeaf-2c3a2950ebdc/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 -> c228d9f74ddd17cda7010ca670107d7221f92470 [2019-10-22 11:27:09,166 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:27:09,181 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:27:09,185 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:27:09,187 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:27:09,187 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:27:09,188 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_175894f3-76b6-4e20-aeaf-2c3a2950ebdc/bin/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c [2019-10-22 11:27:09,245 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_175894f3-76b6-4e20-aeaf-2c3a2950ebdc/bin/utaipan/data/b1dc3ceea/6955ec52a51b4cf59db63a3b8bb76037/FLAGf48ad7128 [2019-10-22 11:27:09,690 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:27:09,691 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_175894f3-76b6-4e20-aeaf-2c3a2950ebdc/sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c [2019-10-22 11:27:09,710 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_175894f3-76b6-4e20-aeaf-2c3a2950ebdc/bin/utaipan/data/b1dc3ceea/6955ec52a51b4cf59db63a3b8bb76037/FLAGf48ad7128 [2019-10-22 11:27:10,032 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_175894f3-76b6-4e20-aeaf-2c3a2950ebdc/bin/utaipan/data/b1dc3ceea/6955ec52a51b4cf59db63a3b8bb76037 [2019-10-22 11:27:10,035 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:27:10,037 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:27:10,038 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:27:10,038 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:27:10,042 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:27:10,043 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:27:10" (1/1) ... [2019-10-22 11:27:10,046 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 11:27:10, skipping insertion in model container [2019-10-22 11:27:10,046 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:27:10" (1/1) ... [2019-10-22 11:27:10,054 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:27:10,096 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:27:10,460 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:27:10,553 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:27:10,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:27:10,706 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:27:10,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:27:10 WrapperNode [2019-10-22 11:27:10,706 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:27:10,707 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:27:10,707 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:27:10,708 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:27:10,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:27:10" (1/1) ... [2019-10-22 11:27:10,737 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:27:10" (1/1) ... [2019-10-22 11:27:10,786 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:27:10,786 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:27:10,786 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:27:10,786 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:27:10,797 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:27:10" (1/1) ... [2019-10-22 11:27:10,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:27:10" (1/1) ... [2019-10-22 11:27:10,803 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:27:10" (1/1) ... [2019-10-22 11:27:10,803 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:27:10" (1/1) ... [2019-10-22 11:27:10,815 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:27:10" (1/1) ... [2019-10-22 11:27:10,830 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:27:10" (1/1) ... [2019-10-22 11:27:10,833 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:27:10" (1/1) ... [2019-10-22 11:27:10,838 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:27:10,847 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:27:10,847 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:27:10,847 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:27:10,848 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:27:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_175894f3-76b6-4e20-aeaf-2c3a2950ebdc/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 11:27:10,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:27:10,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2019-10-22 11:27:10,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:27:10,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:27:11,900 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:27:11,900 INFO L284 CfgBuilder]: Removed 160 assume(true) statements. [2019-10-22 11:27:11,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:27:11 BoogieIcfgContainer [2019-10-22 11:27:11,902 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:27:11,904 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:27:11,904 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:27:11,908 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:27:11,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:27:10" (1/3) ... [2019-10-22 11:27:11,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c6f8cd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:27:11, skipping insertion in model container [2019-10-22 11:27:11,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:27:10" (2/3) ... [2019-10-22 11:27:11,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c6f8cd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:27:11, skipping insertion in model container [2019-10-22 11:27:11,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:27:11" (3/3) ... [2019-10-22 11:27:11,912 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product39.cil.c [2019-10-22 11:27:11,929 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:27:11,940 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-10-22 11:27:11,953 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-10-22 11:27:11,986 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:27:11,986 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:27:11,987 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:27:11,987 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:27:11,988 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:27:11,988 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:27:11,988 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:27:11,989 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:27:12,002 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states. [2019-10-22 11:27:12,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-22 11:27:12,009 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:27:12,010 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:27:12,012 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:27:12,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:27:12,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1221872895, now seen corresponding path program 1 times [2019-10-22 11:27:12,029 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:27:12,029 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [887493316] [2019-10-22 11:27:12,029 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_175894f3-76b6-4e20-aeaf-2c3a2950ebdc/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 11:27:12,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:27:12,260 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-22 11:27:12,266 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:27:12,284 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 11:27:12,284 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:27:12,290 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 11:27:12,291 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [887493316] [2019-10-22 11:27:12,292 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:27:12,292 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-10-22 11:27:12,293 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064877472] [2019-10-22 11:27:12,300 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:27:12,301 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:27:12,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:27:12,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:27:12,320 INFO L87 Difference]: Start difference. First operand 113 states. Second operand 2 states. [2019-10-22 11:27:12,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:27:12,361 INFO L93 Difference]: Finished difference Result 220 states and 335 transitions. [2019-10-22 11:27:12,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:27:12,363 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-10-22 11:27:12,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:27:12,378 INFO L225 Difference]: With dead ends: 220 [2019-10-22 11:27:12,378 INFO L226 Difference]: Without dead ends: 109 [2019-10-22 11:27:12,383 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 11:27:12,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2019-10-22 11:27:12,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2019-10-22 11:27:12,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2019-10-22 11:27:12,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 159 transitions. [2019-10-22 11:27:12,437 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 159 transitions. Word has length 16 [2019-10-22 11:27:12,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:27:12,438 INFO L462 AbstractCegarLoop]: Abstraction has 109 states and 159 transitions. [2019-10-22 11:27:12,438 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:27:12,438 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 159 transitions. [2019-10-22 11:27:12,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 11:27:12,447 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:27:12,447 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 11:27:12,648 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:27:12,648 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:27:12,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:27:12,649 INFO L82 PathProgramCache]: Analyzing trace with hash 175115998, now seen corresponding path program 1 times [2019-10-22 11:27:12,649 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:27:12,649 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1632509210] [2019-10-22 11:27:12,650 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_175894f3-76b6-4e20-aeaf-2c3a2950ebdc/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 11:27:12,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:27:12,830 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:27:12,832 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:27:12,860 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 11:27:12,861 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:27:12,870 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 11:27:12,870 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1632509210] [2019-10-22 11:27:12,870 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:27:12,871 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-10-22 11:27:12,871 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300756833] [2019-10-22 11:27:12,872 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:27:12,873 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:27:12,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:27:12,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:27:12,874 INFO L87 Difference]: Start difference. First operand 109 states and 159 transitions. Second operand 4 states. [2019-10-22 11:27:12,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:27:12,965 INFO L93 Difference]: Finished difference Result 364 states and 534 transitions. [2019-10-22 11:27:12,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:27:12,966 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2019-10-22 11:27:12,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:27:12,969 INFO L225 Difference]: With dead ends: 364 [2019-10-22 11:27:12,969 INFO L226 Difference]: Without dead ends: 261 [2019-10-22 11:27:12,971 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 11:27:12,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2019-10-22 11:27:13,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 150. [2019-10-22 11:27:13,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2019-10-22 11:27:13,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 219 transitions. [2019-10-22 11:27:13,012 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 219 transitions. Word has length 17 [2019-10-22 11:27:13,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:27:13,013 INFO L462 AbstractCegarLoop]: Abstraction has 150 states and 219 transitions. [2019-10-22 11:27:13,013 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:27:13,013 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 219 transitions. [2019-10-22 11:27:13,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-22 11:27:13,014 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:27:13,021 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:27:13,223 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:27:13,223 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:27:13,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:27:13,223 INFO L82 PathProgramCache]: Analyzing trace with hash -837727097, now seen corresponding path program 1 times [2019-10-22 11:27:13,224 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:27:13,224 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1004019956] [2019-10-22 11:27:13,224 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_175894f3-76b6-4e20-aeaf-2c3a2950ebdc/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 11:27:13,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:27:13,396 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:27:13,397 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:27:13,406 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 11:27:13,406 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:27:13,408 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 11:27:13,409 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1004019956] [2019-10-22 11:27:13,409 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:27:13,409 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-22 11:27:13,409 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062713253] [2019-10-22 11:27:13,410 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:27:13,412 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:27:13,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:27:13,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:27:13,413 INFO L87 Difference]: Start difference. First operand 150 states and 219 transitions. Second operand 3 states. [2019-10-22 11:27:13,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:27:13,582 INFO L93 Difference]: Finished difference Result 339 states and 491 transitions. [2019-10-22 11:27:13,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:27:13,583 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-10-22 11:27:13,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:27:13,584 INFO L225 Difference]: With dead ends: 339 [2019-10-22 11:27:13,585 INFO L226 Difference]: Without dead ends: 195 [2019-10-22 11:27:13,585 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 35 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 11:27:13,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2019-10-22 11:27:13,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 189. [2019-10-22 11:27:13,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2019-10-22 11:27:13,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 262 transitions. [2019-10-22 11:27:13,628 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 262 transitions. Word has length 19 [2019-10-22 11:27:13,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:27:13,628 INFO L462 AbstractCegarLoop]: Abstraction has 189 states and 262 transitions. [2019-10-22 11:27:13,628 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:27:13,628 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 262 transitions. [2019-10-22 11:27:13,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-22 11:27:13,629 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:27:13,629 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 11:27:13,831 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:27:13,832 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:27:13,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:27:13,832 INFO L82 PathProgramCache]: Analyzing trace with hash 566175321, now seen corresponding path program 1 times [2019-10-22 11:27:13,832 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:27:13,833 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1588833810] [2019-10-22 11:27:13,833 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_175894f3-76b6-4e20-aeaf-2c3a2950ebdc/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 11:27:13,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:27:13,964 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 11:27:13,965 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:27:13,996 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 11:27:13,997 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:27:14,030 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 11:27:14,030 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1588833810] [2019-10-22 11:27:14,030 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:27:14,030 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 8 [2019-10-22 11:27:14,031 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663526479] [2019-10-22 11:27:14,031 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-22 11:27:14,031 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:27:14,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-22 11:27:14,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-10-22 11:27:14,032 INFO L87 Difference]: Start difference. First operand 189 states and 262 transitions. Second operand 9 states. [2019-10-22 11:27:14,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:27:14,750 INFO L93 Difference]: Finished difference Result 1213 states and 1716 transitions. [2019-10-22 11:27:14,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-22 11:27:14,750 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2019-10-22 11:27:14,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:27:14,754 INFO L225 Difference]: With dead ends: 1213 [2019-10-22 11:27:14,754 INFO L226 Difference]: Without dead ends: 1030 [2019-10-22 11:27:14,755 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2019-10-22 11:27:14,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2019-10-22 11:27:14,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 468. [2019-10-22 11:27:14,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2019-10-22 11:27:14,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 627 transitions. [2019-10-22 11:27:14,829 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 627 transitions. Word has length 25 [2019-10-22 11:27:14,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:27:14,829 INFO L462 AbstractCegarLoop]: Abstraction has 468 states and 627 transitions. [2019-10-22 11:27:14,830 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-22 11:27:14,830 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 627 transitions. [2019-10-22 11:27:14,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-22 11:27:14,835 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:27:14,835 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, 1] [2019-10-22 11:27:15,036 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:27:15,036 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:27:15,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:27:15,036 INFO L82 PathProgramCache]: Analyzing trace with hash 436215253, now seen corresponding path program 1 times [2019-10-22 11:27:15,037 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:27:15,037 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [66983591] [2019-10-22 11:27:15,037 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_175894f3-76b6-4e20-aeaf-2c3a2950ebdc/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 11:27:15,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:27:15,173 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 11:27:15,174 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:27:15,190 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 11:27:15,190 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:27:15,193 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 11:27:15,194 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [66983591] [2019-10-22 11:27:15,194 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:27:15,194 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-10-22 11:27:15,194 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798787332] [2019-10-22 11:27:15,195 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:27:15,195 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:27:15,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:27:15,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:27:15,195 INFO L87 Difference]: Start difference. First operand 468 states and 627 transitions. Second operand 5 states. [2019-10-22 11:27:15,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:27:15,382 INFO L93 Difference]: Finished difference Result 1415 states and 1860 transitions. [2019-10-22 11:27:15,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:27:15,382 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2019-10-22 11:27:15,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:27:15,385 INFO L225 Difference]: With dead ends: 1415 [2019-10-22 11:27:15,385 INFO L226 Difference]: Without dead ends: 953 [2019-10-22 11:27:15,387 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 75 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 11:27:15,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 953 states. [2019-10-22 11:27:15,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 953 to 513. [2019-10-22 11:27:15,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2019-10-22 11:27:15,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 672 transitions. [2019-10-22 11:27:15,429 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 672 transitions. Word has length 39 [2019-10-22 11:27:15,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:27:15,429 INFO L462 AbstractCegarLoop]: Abstraction has 513 states and 672 transitions. [2019-10-22 11:27:15,429 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:27:15,430 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 672 transitions. [2019-10-22 11:27:15,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-22 11:27:15,431 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:27:15,431 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, 1] [2019-10-22 11:27:15,632 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:27:15,632 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:27:15,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:27:15,632 INFO L82 PathProgramCache]: Analyzing trace with hash 302201747, now seen corresponding path program 1 times [2019-10-22 11:27:15,633 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:27:15,633 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [589351717] [2019-10-22 11:27:15,633 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_175894f3-76b6-4e20-aeaf-2c3a2950ebdc/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 11:27:15,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:27:15,768 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 11:27:15,769 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:27:15,781 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 11:27:15,782 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:27:15,796 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 11:27:15,796 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [589351717] [2019-10-22 11:27:15,796 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:27:15,796 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-10-22 11:27:15,796 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163045567] [2019-10-22 11:27:15,797 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 11:27:15,797 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:27:15,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 11:27:15,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:27:15,797 INFO L87 Difference]: Start difference. First operand 513 states and 672 transitions. Second operand 6 states. [2019-10-22 11:27:15,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:27:15,969 INFO L93 Difference]: Finished difference Result 1337 states and 1731 transitions. [2019-10-22 11:27:15,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:27:15,970 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2019-10-22 11:27:15,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:27:15,972 INFO L225 Difference]: With dead ends: 1337 [2019-10-22 11:27:15,972 INFO L226 Difference]: Without dead ends: 759 [2019-10-22 11:27:15,973 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 73 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 11:27:15,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2019-10-22 11:27:16,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 417. [2019-10-22 11:27:16,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2019-10-22 11:27:16,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 544 transitions. [2019-10-22 11:27:16,010 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 544 transitions. Word has length 39 [2019-10-22 11:27:16,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:27:16,010 INFO L462 AbstractCegarLoop]: Abstraction has 417 states and 544 transitions. [2019-10-22 11:27:16,010 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 11:27:16,010 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 544 transitions. [2019-10-22 11:27:16,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-10-22 11:27:16,011 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:27:16,011 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 11:27:16,212 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:27:16,212 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:27:16,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:27:16,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1054930310, now seen corresponding path program 1 times [2019-10-22 11:27:16,213 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:27:16,213 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [316330343] [2019-10-22 11:27:16,213 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_175894f3-76b6-4e20-aeaf-2c3a2950ebdc/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 11:27:16,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:27:16,332 INFO L256 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 11:27:16,333 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:27:16,349 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 11:27:16,349 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:27:16,352 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 11:27:16,353 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [316330343] [2019-10-22 11:27:16,353 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:27:16,353 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-10-22 11:27:16,353 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111779169] [2019-10-22 11:27:16,353 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:27:16,354 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:27:16,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:27:16,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:27:16,354 INFO L87 Difference]: Start difference. First operand 417 states and 544 transitions. Second operand 5 states. [2019-10-22 11:27:16,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:27:16,680 INFO L93 Difference]: Finished difference Result 1079 states and 1404 transitions. [2019-10-22 11:27:16,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-22 11:27:16,680 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2019-10-22 11:27:16,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:27:16,684 INFO L225 Difference]: With dead ends: 1079 [2019-10-22 11:27:16,684 INFO L226 Difference]: Without dead ends: 1073 [2019-10-22 11:27:16,684 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 11:27:16,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2019-10-22 11:27:16,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 417. [2019-10-22 11:27:16,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2019-10-22 11:27:16,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 538 transitions. [2019-10-22 11:27:16,733 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 538 transitions. Word has length 40 [2019-10-22 11:27:16,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:27:16,733 INFO L462 AbstractCegarLoop]: Abstraction has 417 states and 538 transitions. [2019-10-22 11:27:16,733 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:27:16,734 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 538 transitions. [2019-10-22 11:27:16,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-10-22 11:27:16,735 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:27:16,735 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, 1, 1] [2019-10-22 11:27:16,935 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:27:16,935 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:27:16,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:27:16,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1656429568, now seen corresponding path program 1 times [2019-10-22 11:27:16,936 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:27:16,936 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1386935435] [2019-10-22 11:27:16,937 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_175894f3-76b6-4e20-aeaf-2c3a2950ebdc/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 11:27:17,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:27:17,084 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:27:17,085 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:27:17,102 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 11:27:17,103 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:27:17,108 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 11:27:17,109 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1386935435] [2019-10-22 11:27:17,109 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:27:17,109 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-22 11:27:17,109 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638611324] [2019-10-22 11:27:17,110 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:27:17,110 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:27:17,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:27:17,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:27:17,111 INFO L87 Difference]: Start difference. First operand 417 states and 538 transitions. Second operand 3 states. [2019-10-22 11:27:17,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:27:17,154 INFO L93 Difference]: Finished difference Result 417 states and 538 transitions. [2019-10-22 11:27:17,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:27:17,155 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2019-10-22 11:27:17,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:27:17,156 INFO L225 Difference]: With dead ends: 417 [2019-10-22 11:27:17,156 INFO L226 Difference]: Without dead ends: 205 [2019-10-22 11:27:17,156 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 87 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 11:27:17,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2019-10-22 11:27:17,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2019-10-22 11:27:17,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2019-10-22 11:27:17,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 274 transitions. [2019-10-22 11:27:17,176 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 274 transitions. Word has length 45 [2019-10-22 11:27:17,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:27:17,177 INFO L462 AbstractCegarLoop]: Abstraction has 205 states and 274 transitions. [2019-10-22 11:27:17,177 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:27:17,177 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 274 transitions. [2019-10-22 11:27:17,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-10-22 11:27:17,177 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:27:17,178 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, 1, 1] [2019-10-22 11:27:17,378 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:27:17,379 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:27:17,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:27:17,379 INFO L82 PathProgramCache]: Analyzing trace with hash -2038322788, now seen corresponding path program 1 times [2019-10-22 11:27:17,380 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:27:17,380 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1216350789] [2019-10-22 11:27:17,380 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_175894f3-76b6-4e20-aeaf-2c3a2950ebdc/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 11:27:17,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:27:17,497 INFO L256 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 11:27:17,498 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:27:17,525 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 11:27:17,525 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:27:17,575 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 11:27:17,575 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1216350789] [2019-10-22 11:27:17,575 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116773847] [2019-10-22 11:27:17,576 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_175894f3-76b6-4e20-aeaf-2c3a2950ebdc/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 11:27:17,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:27:17,684 INFO L256 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 11:27:17,685 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:27:17,694 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 11:27:17,698 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:27:17,703 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 11:27:17,704 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-22 11:27:17,704 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5] total 9 [2019-10-22 11:27:17,704 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016866009] [2019-10-22 11:27:17,704 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-22 11:27:17,705 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:27:17,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-22 11:27:17,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-22 11:27:17,705 INFO L87 Difference]: Start difference. First operand 205 states and 274 transitions. Second operand 10 states. [2019-10-22 11:27:18,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:27:18,376 INFO L93 Difference]: Finished difference Result 1275 states and 1752 transitions. [2019-10-22 11:27:18,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-10-22 11:27:18,377 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 50 [2019-10-22 11:27:18,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:27:18,380 INFO L225 Difference]: With dead ends: 1275 [2019-10-22 11:27:18,380 INFO L226 Difference]: Without dead ends: 1118 [2019-10-22 11:27:18,381 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 187 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2019-10-22 11:27:18,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1118 states. [2019-10-22 11:27:18,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1118 to 341. [2019-10-22 11:27:18,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2019-10-22 11:27:18,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 463 transitions. [2019-10-22 11:27:18,424 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 463 transitions. Word has length 50 [2019-10-22 11:27:18,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:27:18,424 INFO L462 AbstractCegarLoop]: Abstraction has 341 states and 463 transitions. [2019-10-22 11:27:18,424 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-22 11:27:18,424 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 463 transitions. [2019-10-22 11:27:18,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-10-22 11:27:18,425 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:27:18,425 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-10-22 11:27:18,825 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 11:27:18,826 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:27:18,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:27:18,826 INFO L82 PathProgramCache]: Analyzing trace with hash 564554040, now seen corresponding path program 2 times [2019-10-22 11:27:18,826 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:27:18,826 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1519023762] [2019-10-22 11:27:18,826 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_175894f3-76b6-4e20-aeaf-2c3a2950ebdc/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 11:27:20,538 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 11:27:20,539 INFO L250 tOrderPrioritization]: Conjunction of SSA is sat [2019-10-22 11:27:22,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:27:22,970 INFO L168 tionRefinementEngine]: Strategy WALRUS found a feasible trace [2019-10-22 11:27:22,970 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 11:27:23,171 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:27:23,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:27:23 BoogieIcfgContainer [2019-10-22 11:27:23,304 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:27:23,304 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:27:23,305 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:27:23,305 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:27:23,305 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:27:11" (3/4) ... [2019-10-22 11:27:23,308 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 11:27:23,454 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_175894f3-76b6-4e20-aeaf-2c3a2950ebdc/bin/utaipan/witness.graphml [2019-10-22 11:27:23,454 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:27:23,456 INFO L168 Benchmark]: Toolchain (without parser) took 13419.43 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 294.6 MB). Free memory was 945.6 MB in the beginning and 948.3 MB in the end (delta: -2.7 MB). Peak memory consumption was 291.9 MB. Max. memory is 11.5 GB. [2019-10-22 11:27:23,456 INFO L168 Benchmark]: CDTParser took 0.23 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 11:27:23,457 INFO L168 Benchmark]: CACSL2BoogieTranslator took 668.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 174.6 MB). Free memory was 945.6 MB in the beginning and 1.2 GB in the end (delta: -209.6 MB). Peak memory consumption was 30.1 MB. Max. memory is 11.5 GB. [2019-10-22 11:27:23,457 INFO L168 Benchmark]: Boogie Procedure Inliner took 78.60 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:27:23,457 INFO L168 Benchmark]: Boogie Preprocessor took 51.69 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:27:23,457 INFO L168 Benchmark]: RCFGBuilder took 1055.35 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: 69.1 MB). Peak memory consumption was 69.1 MB. Max. memory is 11.5 GB. [2019-10-22 11:27:23,458 INFO L168 Benchmark]: TraceAbstraction took 11400.40 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 120.1 MB). Free memory was 1.1 GB in the beginning and 973.7 MB in the end (delta: 106.0 MB). Peak memory consumption was 226.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:27:23,458 INFO L168 Benchmark]: Witness Printer took 150.07 ms. Allocated memory is still 1.3 GB. Free memory was 973.7 MB in the beginning and 948.3 MB in the end (delta: 25.3 MB). Peak memory consumption was 25.3 MB. Max. memory is 11.5 GB. [2019-10-22 11:27:23,460 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 668.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 174.6 MB). Free memory was 945.6 MB in the beginning and 1.2 GB in the end (delta: -209.6 MB). Peak memory consumption was 30.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 78.60 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 51.69 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1055.35 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: 69.1 MB). Peak memory consumption was 69.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 11400.40 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 120.1 MB). Free memory was 1.1 GB in the beginning and 973.7 MB in the end (delta: 106.0 MB). Peak memory consumption was 226.0 MB. Max. memory is 11.5 GB. * Witness Printer took 150.07 ms. Allocated memory is still 1.3 GB. Free memory was 973.7 MB in the beginning and 948.3 MB in the end (delta: 25.3 MB). Peak memory consumption was 25.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 722]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L247] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L524] int pumpRunning = 0; [L525] int systemActive = 1; [L728] int waterLevel = 1; [L729] int methaneLevelCritical = 0; [L822] int cleanupTimeShifts = 4; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L895] int retValue_acc ; [L896] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L902] tmp = valid_product() [L904] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L450] int splverifierCounter ; [L451] int tmp ; [L452] int tmp___0 ; [L453] int tmp___1 ; [L454] int tmp___2 ; [L457] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L459] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L461] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L467] tmp = __VERIFIER_nondet_int() [L469] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L746] COND TRUE waterLevel < 2 [L747] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L477] tmp___0 = __VERIFIER_nondet_int() [L479] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L487] tmp___2 = __VERIFIER_nondet_int() [L489] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L532] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L539] COND TRUE \read(systemActive) [L587] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L590] COND FALSE !(\read(pumpRunning)) [L561] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L564] COND TRUE ! pumpRunning [L684] int retValue_acc ; [L685] int tmp ; [L686] int tmp___0 ; [L808] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L811] COND FALSE !(waterLevel < 2) [L815] retValue_acc = 0 [L816] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L690] tmp = isHighWaterSensorDry() [L692] COND FALSE !(\read(tmp)) [L695] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L697] retValue_acc = tmp___0 [L698] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L566] tmp = isHighWaterLevel() [L568] COND TRUE \read(tmp) [L615] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L919] int tmp ; [L920] int tmp___0 ; [L799] int retValue_acc ; [L802] retValue_acc = waterLevel [L803] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L924] tmp = getWaterLevel() [L926] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L459] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L461] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L467] tmp = __VERIFIER_nondet_int() [L469] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L477] tmp___0 = __VERIFIER_nondet_int() [L479] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L487] tmp___2 = __VERIFIER_nondet_int() [L489] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L532] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L734] COND TRUE waterLevel > 0 [L735] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L539] COND TRUE \read(systemActive) [L587] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L590] COND TRUE \read(pumpRunning) [L628] int retValue_acc ; [L767] int retValue_acc ; [L770] retValue_acc = methaneLevelCritical [L771] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L632] retValue_acc = isMethaneLevelCritical() [L634] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L592] tmp = isMethaneAlarm() [L594] COND FALSE !(\read(tmp)) [L561] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L564] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L919] int tmp ; [L920] int tmp___0 ; [L799] int retValue_acc ; [L802] retValue_acc = waterLevel [L803] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L924] tmp = getWaterLevel() [L926] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L459] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L461] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L467] tmp = __VERIFIER_nondet_int() [L469] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L477] tmp___0 = __VERIFIER_nondet_int() [L479] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L487] tmp___2 = __VERIFIER_nondet_int() [L489] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L532] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L734] COND TRUE waterLevel > 0 [L735] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L539] COND TRUE \read(systemActive) [L587] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L590] COND TRUE \read(pumpRunning) [L628] int retValue_acc ; [L767] int retValue_acc ; [L770] retValue_acc = methaneLevelCritical [L771] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L632] retValue_acc = isMethaneLevelCritical() [L634] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L592] tmp = isMethaneAlarm() [L594] COND FALSE !(\read(tmp)) [L561] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L564] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L919] int tmp ; [L920] int tmp___0 ; [L799] int retValue_acc ; [L802] retValue_acc = waterLevel [L803] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L924] tmp = getWaterLevel() [L926] COND TRUE tmp == 0 [L639] int retValue_acc ; [L642] retValue_acc = pumpRunning [L643] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L928] tmp___0 = isPumpRunning() [L930] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L722] __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, 113 locations, 3 error locations. Result: UNSAFE, OverallTime: 11.3s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 1685 SDtfs, 4227 SDslu, 4163 SDs, 0 SdLazy, 803 SolverSat, 245 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 699 GetRequests, 636 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=513occurred 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: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 2894 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 409 NumberOfCodeBlocks, 409 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 660 ConstructedInterpolants, 0 QuantifiedInterpolants, 61756 SizeOfPredicates, 26 NumberOfNonLiveVariables, 1990 ConjunctsInSsa, 44 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...