./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product47.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_f9cb6c24-e3ea-4d1a-b702-e2b64b440873/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_f9cb6c24-e3ea-4d1a-b702-e2b64b440873/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_f9cb6c24-e3ea-4d1a-b702-e2b64b440873/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_f9cb6c24-e3ea-4d1a-b702-e2b64b440873/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product47.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_f9cb6c24-e3ea-4d1a-b702-e2b64b440873/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_f9cb6c24-e3ea-4d1a-b702-e2b64b440873/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 982cd7c832ad69be85d11abb6d88a1915810e691 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_f9cb6c24-e3ea-4d1a-b702-e2b64b440873/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_f9cb6c24-e3ea-4d1a-b702-e2b64b440873/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_f9cb6c24-e3ea-4d1a-b702-e2b64b440873/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_f9cb6c24-e3ea-4d1a-b702-e2b64b440873/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product47.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_f9cb6c24-e3ea-4d1a-b702-e2b64b440873/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_f9cb6c24-e3ea-4d1a-b702-e2b64b440873/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 982cd7c832ad69be85d11abb6d88a1915810e691 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 11:25:37,087 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:25:37,090 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:25:37,100 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:25:37,100 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:25:37,101 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:25:37,103 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:25:37,105 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:25:37,107 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:25:37,109 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:25:37,111 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:25:37,112 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:25:37,112 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:25:37,113 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:25:37,114 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:25:37,115 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:25:37,115 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:25:37,123 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:25:37,125 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:25:37,128 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:25:37,131 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:25:37,133 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:25:37,135 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:25:37,136 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:25:37,138 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:25:37,138 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:25:37,138 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:25:37,138 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:25:37,139 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:25:37,141 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:25:37,141 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:25:37,142 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:25:37,143 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:25:37,143 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:25:37,144 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:25:37,145 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:25:37,145 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:25:37,146 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:25:37,146 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:25:37,146 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:25:37,149 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:25:37,149 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_f9cb6c24-e3ea-4d1a-b702-e2b64b440873/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:25:37,161 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:25:37,170 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:25:37,170 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:25:37,171 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:25:37,171 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:25:37,171 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:25:37,171 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:25:37,171 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:25:37,171 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:25:37,171 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:25:37,172 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:25:37,172 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:25:37,172 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:25:37,172 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:25:37,173 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:25:37,173 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:25:37,173 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:25:37,173 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:25:37,173 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:25:37,173 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:25:37,174 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:25:37,174 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:25:37,174 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:25:37,174 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:25:37,174 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:25:37,174 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:25:37,174 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:25:37,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:25:37,175 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:25:37,175 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:25:37,175 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:25:37,177 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:25:37,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:25:37,178 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:25:37,178 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:25:37,178 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_f9cb6c24-e3ea-4d1a-b702-e2b64b440873/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 -> 982cd7c832ad69be85d11abb6d88a1915810e691 [2019-10-22 11:25:37,208 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:25:37,218 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:25:37,221 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:25:37,223 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:25:37,223 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:25:37,224 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_f9cb6c24-e3ea-4d1a-b702-e2b64b440873/bin/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec4_product47.cil.c [2019-10-22 11:25:37,268 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f9cb6c24-e3ea-4d1a-b702-e2b64b440873/bin/utaipan/data/6537d80eb/089f6621480c4eafa4d4b0df88096555/FLAG6050a6916 [2019-10-22 11:25:37,730 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:25:37,731 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_f9cb6c24-e3ea-4d1a-b702-e2b64b440873/sv-benchmarks/c/product-lines/minepump_spec4_product47.cil.c [2019-10-22 11:25:37,744 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f9cb6c24-e3ea-4d1a-b702-e2b64b440873/bin/utaipan/data/6537d80eb/089f6621480c4eafa4d4b0df88096555/FLAG6050a6916 [2019-10-22 11:25:38,071 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_f9cb6c24-e3ea-4d1a-b702-e2b64b440873/bin/utaipan/data/6537d80eb/089f6621480c4eafa4d4b0df88096555 [2019-10-22 11:25:38,074 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:25:38,076 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:25:38,077 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:25:38,077 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:25:38,084 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:25:38,085 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:25:38" (1/1) ... [2019-10-22 11:25:38,088 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dde477f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:38, skipping insertion in model container [2019-10-22 11:25:38,088 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:25:38" (1/1) ... [2019-10-22 11:25:38,095 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:25:38,142 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:25:38,488 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:25:38,498 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:25:38,574 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:25:38,601 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:25:38,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:38 WrapperNode [2019-10-22 11:25:38,601 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:25:38,602 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:25:38,602 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:25:38,602 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:25:38,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:38" (1/1) ... [2019-10-22 11:25:38,627 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:38" (1/1) ... [2019-10-22 11:25:38,667 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:25:38,667 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:25:38,668 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:25:38,668 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:25:38,677 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:38" (1/1) ... [2019-10-22 11:25:38,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:38" (1/1) ... [2019-10-22 11:25:38,681 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:38" (1/1) ... [2019-10-22 11:25:38,682 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:38" (1/1) ... [2019-10-22 11:25:38,692 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:38" (1/1) ... [2019-10-22 11:25:38,699 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:38" (1/1) ... [2019-10-22 11:25:38,701 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:38" (1/1) ... [2019-10-22 11:25:38,705 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:25:38,706 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:25:38,706 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:25:38,706 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:25:38,707 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f9cb6c24-e3ea-4d1a-b702-e2b64b440873/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:25:38,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:25:38,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-22 11:25:38,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:25:38,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:25:39,518 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:25:39,518 INFO L284 CfgBuilder]: Removed 196 assume(true) statements. [2019-10-22 11:25:39,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:39 BoogieIcfgContainer [2019-10-22 11:25:39,519 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:25:39,520 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:25:39,520 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:25:39,523 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:25:39,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:25:38" (1/3) ... [2019-10-22 11:25:39,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c4872fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:25:39, skipping insertion in model container [2019-10-22 11:25:39,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:38" (2/3) ... [2019-10-22 11:25:39,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c4872fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:25:39, skipping insertion in model container [2019-10-22 11:25:39,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:39" (3/3) ... [2019-10-22 11:25:39,529 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product47.cil.c [2019-10-22 11:25:39,538 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:25:39,547 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-10-22 11:25:39,557 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-10-22 11:25:39,591 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:25:39,591 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:25:39,591 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:25:39,592 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:25:39,592 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:25:39,592 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:25:39,592 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:25:39,592 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:25:39,612 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states. [2019-10-22 11:25:39,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-22 11:25:39,619 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:39,620 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:25:39,622 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:39,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:39,628 INFO L82 PathProgramCache]: Analyzing trace with hash -330245923, now seen corresponding path program 1 times [2019-10-22 11:25:39,636 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:39,636 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190848961] [2019-10-22 11:25:39,637 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:39,637 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:39,637 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:39,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:39,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:39,873 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190848961] [2019-10-22 11:25:39,874 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:39,874 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:25:39,874 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072079921] [2019-10-22 11:25:39,877 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:25:39,879 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:39,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:25:39,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:25:39,889 INFO L87 Difference]: Start difference. First operand 131 states. Second operand 2 states. [2019-10-22 11:25:39,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:39,917 INFO L93 Difference]: Finished difference Result 256 states and 383 transitions. [2019-10-22 11:25:39,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:25:39,918 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-10-22 11:25:39,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:39,927 INFO L225 Difference]: With dead ends: 256 [2019-10-22 11:25:39,927 INFO L226 Difference]: Without dead ends: 127 [2019-10-22 11:25:39,930 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 11:25:39,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2019-10-22 11:25:39,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2019-10-22 11:25:39,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2019-10-22 11:25:39,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 183 transitions. [2019-10-22 11:25:39,967 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 183 transitions. Word has length 16 [2019-10-22 11:25:39,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:39,967 INFO L462 AbstractCegarLoop]: Abstraction has 127 states and 183 transitions. [2019-10-22 11:25:39,967 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:25:39,967 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 183 transitions. [2019-10-22 11:25:39,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 11:25:39,968 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:39,968 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 11:25:39,969 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:39,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:39,969 INFO L82 PathProgramCache]: Analyzing trace with hash 450073546, now seen corresponding path program 1 times [2019-10-22 11:25:39,969 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:39,969 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047192831] [2019-10-22 11:25:39,969 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:39,970 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:39,970 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:40,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:40,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:40,051 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047192831] [2019-10-22 11:25:40,051 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:40,052 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:25:40,052 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921614275] [2019-10-22 11:25:40,053 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:25:40,053 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:40,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:25:40,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:25:40,054 INFO L87 Difference]: Start difference. First operand 127 states and 183 transitions. Second operand 3 states. [2019-10-22 11:25:40,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:40,065 INFO L93 Difference]: Finished difference Result 127 states and 183 transitions. [2019-10-22 11:25:40,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:25:40,066 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-10-22 11:25:40,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:40,066 INFO L225 Difference]: With dead ends: 127 [2019-10-22 11:25:40,067 INFO L226 Difference]: Without dead ends: 53 [2019-10-22 11:25:40,067 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:25:40,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-10-22 11:25:40,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2019-10-22 11:25:40,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-10-22 11:25:40,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 76 transitions. [2019-10-22 11:25:40,073 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 76 transitions. Word has length 17 [2019-10-22 11:25:40,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:40,073 INFO L462 AbstractCegarLoop]: Abstraction has 53 states and 76 transitions. [2019-10-22 11:25:40,073 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:25:40,073 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 76 transitions. [2019-10-22 11:25:40,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-22 11:25:40,074 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:40,074 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 11:25:40,074 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:40,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:40,075 INFO L82 PathProgramCache]: Analyzing trace with hash 445162074, now seen corresponding path program 1 times [2019-10-22 11:25:40,075 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:40,075 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436211317] [2019-10-22 11:25:40,076 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:40,076 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:40,076 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:40,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:40,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:40,186 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436211317] [2019-10-22 11:25:40,186 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:40,187 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:25:40,187 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039537944] [2019-10-22 11:25:40,187 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 11:25:40,187 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:40,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 11:25:40,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:25:40,188 INFO L87 Difference]: Start difference. First operand 53 states and 76 transitions. Second operand 6 states. [2019-10-22 11:25:40,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:40,296 INFO L93 Difference]: Finished difference Result 170 states and 250 transitions. [2019-10-22 11:25:40,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:25:40,297 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2019-10-22 11:25:40,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:40,298 INFO L225 Difference]: With dead ends: 170 [2019-10-22 11:25:40,298 INFO L226 Difference]: Without dead ends: 123 [2019-10-22 11:25:40,298 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:25:40,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2019-10-22 11:25:40,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 72. [2019-10-22 11:25:40,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2019-10-22 11:25:40,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 105 transitions. [2019-10-22 11:25:40,308 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 105 transitions. Word has length 22 [2019-10-22 11:25:40,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:40,308 INFO L462 AbstractCegarLoop]: Abstraction has 72 states and 105 transitions. [2019-10-22 11:25:40,308 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 11:25:40,308 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 105 transitions. [2019-10-22 11:25:40,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-22 11:25:40,309 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:40,309 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 11:25:40,309 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:40,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:40,309 INFO L82 PathProgramCache]: Analyzing trace with hash 96758808, now seen corresponding path program 1 times [2019-10-22 11:25:40,310 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:40,310 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022210548] [2019-10-22 11:25:40,310 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:40,310 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:40,310 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:40,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:40,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:40,357 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022210548] [2019-10-22 11:25:40,357 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:40,357 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:25:40,357 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706303876] [2019-10-22 11:25:40,357 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:25:40,358 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:40,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:25:40,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:25:40,358 INFO L87 Difference]: Start difference. First operand 72 states and 105 transitions. Second operand 3 states. [2019-10-22 11:25:40,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:40,410 INFO L93 Difference]: Finished difference Result 159 states and 234 transitions. [2019-10-22 11:25:40,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:25:40,411 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2019-10-22 11:25:40,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:40,411 INFO L225 Difference]: With dead ends: 159 [2019-10-22 11:25:40,412 INFO L226 Difference]: Without dead ends: 93 [2019-10-22 11:25:40,412 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 11:25:40,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2019-10-22 11:25:40,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2019-10-22 11:25:40,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2019-10-22 11:25:40,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 129 transitions. [2019-10-22 11:25:40,425 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 129 transitions. Word has length 24 [2019-10-22 11:25:40,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:40,425 INFO L462 AbstractCegarLoop]: Abstraction has 91 states and 129 transitions. [2019-10-22 11:25:40,425 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:25:40,425 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 129 transitions. [2019-10-22 11:25:40,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-22 11:25:40,427 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:40,428 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 11:25:40,428 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:40,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:40,428 INFO L82 PathProgramCache]: Analyzing trace with hash -732744145, now seen corresponding path program 1 times [2019-10-22 11:25:40,428 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:40,429 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151918609] [2019-10-22 11:25:40,429 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:40,429 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:40,429 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:40,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:40,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:40,539 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151918609] [2019-10-22 11:25:40,540 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:40,540 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:25:40,540 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701010658] [2019-10-22 11:25:40,540 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:25:40,541 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:40,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:25:40,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:25:40,541 INFO L87 Difference]: Start difference. First operand 91 states and 129 transitions. Second operand 5 states. [2019-10-22 11:25:40,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:40,647 INFO L93 Difference]: Finished difference Result 325 states and 468 transitions. [2019-10-22 11:25:40,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:25:40,648 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2019-10-22 11:25:40,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:40,650 INFO L225 Difference]: With dead ends: 325 [2019-10-22 11:25:40,650 INFO L226 Difference]: Without dead ends: 240 [2019-10-22 11:25:40,650 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 11:25:40,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2019-10-22 11:25:40,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 153. [2019-10-22 11:25:40,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2019-10-22 11:25:40,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 212 transitions. [2019-10-22 11:25:40,678 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 212 transitions. Word has length 25 [2019-10-22 11:25:40,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:40,678 INFO L462 AbstractCegarLoop]: Abstraction has 153 states and 212 transitions. [2019-10-22 11:25:40,678 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:25:40,679 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 212 transitions. [2019-10-22 11:25:40,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-10-22 11:25:40,679 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:40,679 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 11:25:40,680 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:40,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:40,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1602914161, now seen corresponding path program 1 times [2019-10-22 11:25:40,680 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:40,681 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93274908] [2019-10-22 11:25:40,681 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:40,681 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:40,681 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:40,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:40,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:40,751 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93274908] [2019-10-22 11:25:40,752 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:40,752 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:25:40,752 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506037389] [2019-10-22 11:25:40,752 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:25:40,753 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:40,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:25:40,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:25:40,753 INFO L87 Difference]: Start difference. First operand 153 states and 212 transitions. Second operand 5 states. [2019-10-22 11:25:40,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:40,890 INFO L93 Difference]: Finished difference Result 321 states and 453 transitions. [2019-10-22 11:25:40,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-22 11:25:40,890 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2019-10-22 11:25:40,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:40,892 INFO L225 Difference]: With dead ends: 321 [2019-10-22 11:25:40,892 INFO L226 Difference]: Without dead ends: 319 [2019-10-22 11:25:40,892 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 11:25:40,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2019-10-22 11:25:40,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 153. [2019-10-22 11:25:40,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2019-10-22 11:25:40,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 210 transitions. [2019-10-22 11:25:40,908 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 210 transitions. Word has length 26 [2019-10-22 11:25:40,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:40,909 INFO L462 AbstractCegarLoop]: Abstraction has 153 states and 210 transitions. [2019-10-22 11:25:40,909 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:25:40,909 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 210 transitions. [2019-10-22 11:25:40,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-10-22 11:25:40,910 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:40,910 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] [2019-10-22 11:25:40,910 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:40,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:40,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1235666169, now seen corresponding path program 1 times [2019-10-22 11:25:40,911 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:40,912 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443059980] [2019-10-22 11:25:40,912 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:40,912 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:40,912 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:40,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:40,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:40,951 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443059980] [2019-10-22 11:25:40,951 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:40,951 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:25:40,951 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558908337] [2019-10-22 11:25:40,952 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:25:40,952 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:40,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:25:40,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:25:40,953 INFO L87 Difference]: Start difference. First operand 153 states and 210 transitions. Second operand 4 states. [2019-10-22 11:25:41,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:41,017 INFO L93 Difference]: Finished difference Result 459 states and 638 transitions. [2019-10-22 11:25:41,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:25:41,017 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2019-10-22 11:25:41,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:41,019 INFO L225 Difference]: With dead ends: 459 [2019-10-22 11:25:41,019 INFO L226 Difference]: Without dead ends: 374 [2019-10-22 11:25:41,020 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:25:41,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2019-10-22 11:25:41,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 157. [2019-10-22 11:25:41,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2019-10-22 11:25:41,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 214 transitions. [2019-10-22 11:25:41,034 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 214 transitions. Word has length 34 [2019-10-22 11:25:41,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:41,034 INFO L462 AbstractCegarLoop]: Abstraction has 157 states and 214 transitions. [2019-10-22 11:25:41,034 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:25:41,035 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 214 transitions. [2019-10-22 11:25:41,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-10-22 11:25:41,036 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:41,036 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] [2019-10-22 11:25:41,036 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:41,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:41,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1822472183, now seen corresponding path program 1 times [2019-10-22 11:25:41,037 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:41,037 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78400835] [2019-10-22 11:25:41,037 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:41,037 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:41,037 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:41,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:41,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:41,096 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78400835] [2019-10-22 11:25:41,096 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:41,096 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:25:41,096 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523728777] [2019-10-22 11:25:41,097 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:25:41,097 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:41,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:25:41,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:25:41,097 INFO L87 Difference]: Start difference. First operand 157 states and 214 transitions. Second operand 5 states. [2019-10-22 11:25:41,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:41,230 INFO L93 Difference]: Finished difference Result 388 states and 543 transitions. [2019-10-22 11:25:41,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:25:41,231 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2019-10-22 11:25:41,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:41,232 INFO L225 Difference]: With dead ends: 388 [2019-10-22 11:25:41,232 INFO L226 Difference]: Without dead ends: 299 [2019-10-22 11:25:41,233 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 11:25:41,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2019-10-22 11:25:41,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 222. [2019-10-22 11:25:41,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2019-10-22 11:25:41,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 301 transitions. [2019-10-22 11:25:41,269 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 301 transitions. Word has length 34 [2019-10-22 11:25:41,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:41,269 INFO L462 AbstractCegarLoop]: Abstraction has 222 states and 301 transitions. [2019-10-22 11:25:41,270 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:25:41,270 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 301 transitions. [2019-10-22 11:25:41,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-10-22 11:25:41,274 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:41,274 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] [2019-10-22 11:25:41,275 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:41,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:41,275 INFO L82 PathProgramCache]: Analyzing trace with hash 44197509, now seen corresponding path program 1 times [2019-10-22 11:25:41,275 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:41,275 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058118519] [2019-10-22 11:25:41,276 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:41,276 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:41,276 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:41,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:41,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:41,328 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058118519] [2019-10-22 11:25:41,328 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:41,329 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:25:41,329 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152452701] [2019-10-22 11:25:41,329 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:25:41,329 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:41,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:25:41,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:25:41,330 INFO L87 Difference]: Start difference. First operand 222 states and 301 transitions. Second operand 5 states. [2019-10-22 11:25:41,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:41,450 INFO L93 Difference]: Finished difference Result 660 states and 894 transitions. [2019-10-22 11:25:41,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:25:41,451 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2019-10-22 11:25:41,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:41,452 INFO L225 Difference]: With dead ends: 660 [2019-10-22 11:25:41,452 INFO L226 Difference]: Without dead ends: 444 [2019-10-22 11:25:41,453 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 11:25:41,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2019-10-22 11:25:41,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 231. [2019-10-22 11:25:41,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2019-10-22 11:25:41,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 310 transitions. [2019-10-22 11:25:41,477 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 310 transitions. Word has length 34 [2019-10-22 11:25:41,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:41,477 INFO L462 AbstractCegarLoop]: Abstraction has 231 states and 310 transitions. [2019-10-22 11:25:41,477 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:25:41,478 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 310 transitions. [2019-10-22 11:25:41,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-10-22 11:25:41,478 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:41,478 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] [2019-10-22 11:25:41,479 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:41,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:41,479 INFO L82 PathProgramCache]: Analyzing trace with hash -542608505, now seen corresponding path program 1 times [2019-10-22 11:25:41,479 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:41,486 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265168232] [2019-10-22 11:25:41,486 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:41,486 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:41,486 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:41,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:41,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:41,541 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265168232] [2019-10-22 11:25:41,541 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:41,541 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-22 11:25:41,542 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080890207] [2019-10-22 11:25:41,542 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 11:25:41,542 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:41,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 11:25:41,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:25:41,543 INFO L87 Difference]: Start difference. First operand 231 states and 310 transitions. Second operand 6 states. [2019-10-22 11:25:41,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:41,626 INFO L93 Difference]: Finished difference Result 523 states and 704 transitions. [2019-10-22 11:25:41,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:25:41,626 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2019-10-22 11:25:41,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:41,627 INFO L225 Difference]: With dead ends: 523 [2019-10-22 11:25:41,627 INFO L226 Difference]: Without dead ends: 298 [2019-10-22 11:25:41,628 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-22 11:25:41,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2019-10-22 11:25:41,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 197. [2019-10-22 11:25:41,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2019-10-22 11:25:41,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 260 transitions. [2019-10-22 11:25:41,646 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 260 transitions. Word has length 34 [2019-10-22 11:25:41,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:41,646 INFO L462 AbstractCegarLoop]: Abstraction has 197 states and 260 transitions. [2019-10-22 11:25:41,646 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 11:25:41,646 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 260 transitions. [2019-10-22 11:25:41,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-22 11:25:41,647 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:41,649 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, 1, 1, 1] [2019-10-22 11:25:41,649 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:41,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:41,650 INFO L82 PathProgramCache]: Analyzing trace with hash 134497996, now seen corresponding path program 1 times [2019-10-22 11:25:41,650 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:41,650 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202095208] [2019-10-22 11:25:41,650 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:41,650 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:41,650 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:41,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:41,713 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 11:25:41,713 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202095208] [2019-10-22 11:25:41,713 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477086551] [2019-10-22 11:25:41,714 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f9cb6c24-e3ea-4d1a-b702-e2b64b440873/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:25:41,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:41,823 INFO L256 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 11:25:41,830 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:25:41,854 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 11:25:41,855 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:25:41,885 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 11:25:41,885 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1888514606] [2019-10-22 11:25:41,890 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 54 [2019-10-22 11:25:41,932 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-10-22 11:25:41,932 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-22 11:25:42,372 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:25:42,373 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: inappropriate decl info IMPLEMENTATION at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Boogie2SmtSymbolTable.getBoogieVar(Boogie2SmtSymbolTable.java:222) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.getBoogieVar(NonrelationalStatementProcessor.java:348) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.handleHavocStatement(NonrelationalStatementProcessor.java:325) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.processStatement(NonrelationalStatementProcessor.java:159) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.process(NonrelationalStatementProcessor.java:138) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.process(NonrelationalStatementProcessor.java:107) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.handleInternalTransition(NonrelationalPostOperator.java:422) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.handleInternalTransition(NonrelationalPostOperator.java:413) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.apply(NonrelationalPostOperator.java:140) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.apply(NonrelationalPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.applyInternally(CompoundDomainPostOperator.java:306) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.apply(CompoundDomainPostOperator.java:131) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.apply(CompoundDomainPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormanCachedPostOperation.restoreOriginalStateVariables(PoormanCachedPostOperation.java:322) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.applyPost(PoormansAbstractPostOperator.java:217) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:120) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.lambda$17(DisjunctiveAbstractState.java:323) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.mapCollection(DisjunctiveAbstractState.java:519) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.apply(DisjunctiveAbstractState.java:323) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateAbstractPost(FixpointEngine.java:249) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateFixpoint(FixpointEngine.java:134) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.run(FixpointEngine.java:105) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.tool.AbstractInterpreter.runWithoutTimeoutAndResults(AbstractInterpreter.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner.generateFixpoints(CegarAbsIntRunner.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner.(CegarAbsIntRunner.java:158) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleAbstractInterpretation.getOrConstructRunner(IpTcStrategyModuleAbstractInterpretation.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleAbstractInterpretation.construct(IpTcStrategyModuleAbstractInterpretation.java:81) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:299) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-10-22 11:25:42,380 INFO L168 Benchmark]: Toolchain (without parser) took 4303.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 190.8 MB). Free memory was 948.5 MB in the beginning and 1.0 GB in the end (delta: -89.7 MB). Peak memory consumption was 101.1 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:42,380 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:25:42,381 INFO L168 Benchmark]: CACSL2BoogieTranslator took 524.53 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 99.6 MB). Free memory was 943.2 MB in the beginning and 1.1 GB in the end (delta: -131.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:42,382 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.08 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:25:42,382 INFO L168 Benchmark]: Boogie Preprocessor took 38.48 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:42,383 INFO L168 Benchmark]: RCFGBuilder took 813.31 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 63.5 MB). Peak memory consumption was 63.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:42,384 INFO L168 Benchmark]: TraceAbstraction took 2857.98 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 91.2 MB). Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: -33.8 MB). Peak memory consumption was 57.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:42,388 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 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 524.53 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 99.6 MB). Free memory was 943.2 MB in the beginning and 1.1 GB in the end (delta: -131.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 65.08 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 38.48 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 813.31 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 63.5 MB). Peak memory consumption was 63.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2857.98 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 91.2 MB). Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: -33.8 MB). Peak memory consumption was 57.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: inappropriate decl info IMPLEMENTATION de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: inappropriate decl info IMPLEMENTATION: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Boogie2SmtSymbolTable.getBoogieVar(Boogie2SmtSymbolTable.java:222) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-cad4683 [2019-10-22 11:25:44,367 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:25:44,369 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:25:44,378 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:25:44,378 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:25:44,379 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:25:44,380 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:25:44,381 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:25:44,383 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:25:44,384 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:25:44,384 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:25:44,385 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:25:44,386 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:25:44,386 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:25:44,387 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:25:44,388 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:25:44,389 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:25:44,389 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:25:44,391 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:25:44,392 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:25:44,394 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:25:44,394 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:25:44,395 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:25:44,396 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:25:44,398 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:25:44,398 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:25:44,399 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:25:44,399 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:25:44,400 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:25:44,401 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:25:44,401 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:25:44,401 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:25:44,402 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:25:44,403 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:25:44,404 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:25:44,404 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:25:44,404 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:25:44,405 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:25:44,405 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:25:44,405 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:25:44,406 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:25:44,406 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_f9cb6c24-e3ea-4d1a-b702-e2b64b440873/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-10-22 11:25:44,418 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:25:44,418 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:25:44,419 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:25:44,419 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:25:44,419 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:25:44,419 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:25:44,419 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:25:44,420 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:25:44,420 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:25:44,420 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:25:44,420 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:25:44,421 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:25:44,421 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:25:44,421 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:25:44,421 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:25:44,421 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:25:44,421 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-10-22 11:25:44,421 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-10-22 11:25:44,422 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:25:44,422 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:25:44,422 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 11:25:44,422 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:25:44,422 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:25:44,422 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:25:44,423 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:25:44,423 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:25:44,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:25:44,423 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:25:44,423 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:25:44,424 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:25:44,424 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-10-22 11:25:44,424 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-10-22 11:25:44,424 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:25:44,424 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:25:44,424 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_f9cb6c24-e3ea-4d1a-b702-e2b64b440873/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 -> 982cd7c832ad69be85d11abb6d88a1915810e691 [2019-10-22 11:25:44,451 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:25:44,461 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:25:44,464 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:25:44,466 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:25:44,466 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:25:44,466 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_f9cb6c24-e3ea-4d1a-b702-e2b64b440873/bin/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec4_product47.cil.c [2019-10-22 11:25:44,513 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f9cb6c24-e3ea-4d1a-b702-e2b64b440873/bin/utaipan/data/d529544a1/cd3986f271694578893c648d8e398e42/FLAG37af90182 [2019-10-22 11:25:44,964 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:25:44,965 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_f9cb6c24-e3ea-4d1a-b702-e2b64b440873/sv-benchmarks/c/product-lines/minepump_spec4_product47.cil.c [2019-10-22 11:25:44,974 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f9cb6c24-e3ea-4d1a-b702-e2b64b440873/bin/utaipan/data/d529544a1/cd3986f271694578893c648d8e398e42/FLAG37af90182 [2019-10-22 11:25:45,296 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_f9cb6c24-e3ea-4d1a-b702-e2b64b440873/bin/utaipan/data/d529544a1/cd3986f271694578893c648d8e398e42 [2019-10-22 11:25:45,298 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:25:45,299 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:25:45,300 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:25:45,300 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:25:45,303 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:25:45,304 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:25:45" (1/1) ... [2019-10-22 11:25:45,306 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c8789c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:45, skipping insertion in model container [2019-10-22 11:25:45,306 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:25:45" (1/1) ... [2019-10-22 11:25:45,312 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:25:45,342 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:25:45,718 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:25:45,738 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:25:45,823 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:25:45,870 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:25:45,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:45 WrapperNode [2019-10-22 11:25:45,870 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:25:45,871 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:25:45,871 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:25:45,871 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:25:45,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:45" (1/1) ... [2019-10-22 11:25:45,900 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:45" (1/1) ... [2019-10-22 11:25:45,936 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:25:45,936 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:25:45,936 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:25:45,936 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:25:45,948 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:45" (1/1) ... [2019-10-22 11:25:45,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:45" (1/1) ... [2019-10-22 11:25:45,952 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:45" (1/1) ... [2019-10-22 11:25:45,952 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:45" (1/1) ... [2019-10-22 11:25:45,964 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:45" (1/1) ... [2019-10-22 11:25:45,980 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:45" (1/1) ... [2019-10-22 11:25:45,983 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:45" (1/1) ... [2019-10-22 11:25:45,994 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:25:45,997 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:25:46,000 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:25:46,000 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:25:46,001 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:45" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f9cb6c24-e3ea-4d1a-b702-e2b64b440873/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:25:46,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:25:46,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2019-10-22 11:25:46,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:25:46,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:25:46,902 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:25:46,902 INFO L284 CfgBuilder]: Removed 196 assume(true) statements. [2019-10-22 11:25:46,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:46 BoogieIcfgContainer [2019-10-22 11:25:46,904 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:25:46,905 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:25:46,905 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:25:46,908 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:25:46,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:25:45" (1/3) ... [2019-10-22 11:25:46,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bb5305b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:25:46, skipping insertion in model container [2019-10-22 11:25:46,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:45" (2/3) ... [2019-10-22 11:25:46,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bb5305b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:25:46, skipping insertion in model container [2019-10-22 11:25:46,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:46" (3/3) ... [2019-10-22 11:25:46,911 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product47.cil.c [2019-10-22 11:25:46,920 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:25:46,926 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-10-22 11:25:46,936 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-10-22 11:25:46,955 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:25:46,956 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:25:46,956 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:25:46,956 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:25:46,956 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:25:46,956 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:25:46,956 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:25:46,956 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:25:46,967 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states. [2019-10-22 11:25:46,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-22 11:25:46,973 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:46,973 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:25:46,975 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:46,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:46,978 INFO L82 PathProgramCache]: Analyzing trace with hash -330245923, now seen corresponding path program 1 times [2019-10-22 11:25:46,987 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:25:46,987 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [555384974] [2019-10-22 11:25:46,987 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f9cb6c24-e3ea-4d1a-b702-e2b64b440873/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 11:25:47,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:47,144 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-22 11:25:47,149 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:25:47,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:47,164 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:25:47,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:47,171 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [555384974] [2019-10-22 11:25:47,171 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:47,171 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-10-22 11:25:47,172 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909186229] [2019-10-22 11:25:47,175 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:25:47,176 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:25:47,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:25:47,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:25:47,190 INFO L87 Difference]: Start difference. First operand 131 states. Second operand 2 states. [2019-10-22 11:25:47,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:47,221 INFO L93 Difference]: Finished difference Result 256 states and 383 transitions. [2019-10-22 11:25:47,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:25:47,222 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-10-22 11:25:47,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:47,232 INFO L225 Difference]: With dead ends: 256 [2019-10-22 11:25:47,232 INFO L226 Difference]: Without dead ends: 127 [2019-10-22 11:25:47,235 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 11:25:47,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2019-10-22 11:25:47,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2019-10-22 11:25:47,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2019-10-22 11:25:47,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 183 transitions. [2019-10-22 11:25:47,275 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 183 transitions. Word has length 16 [2019-10-22 11:25:47,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:47,275 INFO L462 AbstractCegarLoop]: Abstraction has 127 states and 183 transitions. [2019-10-22 11:25:47,276 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:25:47,276 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 183 transitions. [2019-10-22 11:25:47,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 11:25:47,277 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:47,277 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 11:25:47,477 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:25:47,478 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:47,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:47,478 INFO L82 PathProgramCache]: Analyzing trace with hash 450073546, now seen corresponding path program 1 times [2019-10-22 11:25:47,479 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:25:47,479 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [295175078] [2019-10-22 11:25:47,479 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f9cb6c24-e3ea-4d1a-b702-e2b64b440873/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 11:25:47,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:47,618 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:25:47,619 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:25:47,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:47,641 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:25:47,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:47,649 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [295175078] [2019-10-22 11:25:47,649 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:47,649 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-10-22 11:25:47,649 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28921689] [2019-10-22 11:25:47,651 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:25:47,651 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:25:47,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:25:47,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:25:47,652 INFO L87 Difference]: Start difference. First operand 127 states and 183 transitions. Second operand 4 states. [2019-10-22 11:25:47,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:47,754 INFO L93 Difference]: Finished difference Result 418 states and 606 transitions. [2019-10-22 11:25:47,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:25:47,754 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2019-10-22 11:25:47,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:47,757 INFO L225 Difference]: With dead ends: 418 [2019-10-22 11:25:47,757 INFO L226 Difference]: Without dead ends: 297 [2019-10-22 11:25:47,758 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 11:25:47,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2019-10-22 11:25:47,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 168. [2019-10-22 11:25:47,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2019-10-22 11:25:47,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 243 transitions. [2019-10-22 11:25:47,793 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 243 transitions. Word has length 17 [2019-10-22 11:25:47,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:47,793 INFO L462 AbstractCegarLoop]: Abstraction has 168 states and 243 transitions. [2019-10-22 11:25:47,794 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:25:47,794 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 243 transitions. [2019-10-22 11:25:47,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-22 11:25:47,795 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:47,795 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 11:25:47,995 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:25:47,996 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:47,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:47,996 INFO L82 PathProgramCache]: Analyzing trace with hash 521720904, now seen corresponding path program 1 times [2019-10-22 11:25:47,997 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:25:47,997 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [750489306] [2019-10-22 11:25:47,997 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f9cb6c24-e3ea-4d1a-b702-e2b64b440873/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 11:25:48,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:48,138 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:25:48,139 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:25:48,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:48,150 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:25:48,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:48,152 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [750489306] [2019-10-22 11:25:48,152 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:48,152 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-22 11:25:48,153 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570735143] [2019-10-22 11:25:48,153 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:25:48,153 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:25:48,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:25:48,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:25:48,154 INFO L87 Difference]: Start difference. First operand 168 states and 243 transitions. Second operand 3 states. [2019-10-22 11:25:48,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:48,309 INFO L93 Difference]: Finished difference Result 375 states and 539 transitions. [2019-10-22 11:25:48,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:25:48,310 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-10-22 11:25:48,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:48,311 INFO L225 Difference]: With dead ends: 375 [2019-10-22 11:25:48,312 INFO L226 Difference]: Without dead ends: 213 [2019-10-22 11:25:48,312 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 11:25:48,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2019-10-22 11:25:48,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 207. [2019-10-22 11:25:48,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2019-10-22 11:25:48,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 286 transitions. [2019-10-22 11:25:48,356 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 286 transitions. Word has length 19 [2019-10-22 11:25:48,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:48,356 INFO L462 AbstractCegarLoop]: Abstraction has 207 states and 286 transitions. [2019-10-22 11:25:48,356 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:25:48,356 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 286 transitions. [2019-10-22 11:25:48,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-22 11:25:48,357 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:48,357 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 11:25:48,558 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:25:48,558 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:48,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:48,559 INFO L82 PathProgramCache]: Analyzing trace with hash -732744145, now seen corresponding path program 1 times [2019-10-22 11:25:48,559 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:25:48,559 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1545484241] [2019-10-22 11:25:48,559 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f9cb6c24-e3ea-4d1a-b702-e2b64b440873/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 11:25:48,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:48,686 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 11:25:48,687 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:25:48,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:48,724 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:25:48,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:48,764 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1545484241] [2019-10-22 11:25:48,764 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:48,764 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 8 [2019-10-22 11:25:48,764 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086048491] [2019-10-22 11:25:48,765 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-22 11:25:48,765 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:25:48,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-22 11:25:48,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-10-22 11:25:48,765 INFO L87 Difference]: Start difference. First operand 207 states and 286 transitions. Second operand 9 states. [2019-10-22 11:25:49,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:49,563 INFO L93 Difference]: Finished difference Result 1390 states and 1952 transitions. [2019-10-22 11:25:49,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-22 11:25:49,564 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2019-10-22 11:25:49,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:49,571 INFO L225 Difference]: With dead ends: 1390 [2019-10-22 11:25:49,572 INFO L226 Difference]: Without dead ends: 1189 [2019-10-22 11:25:49,573 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 11:25:49,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2019-10-22 11:25:49,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 513. [2019-10-22 11:25:49,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2019-10-22 11:25:49,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 687 transitions. [2019-10-22 11:25:49,654 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 687 transitions. Word has length 25 [2019-10-22 11:25:49,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:49,654 INFO L462 AbstractCegarLoop]: Abstraction has 513 states and 687 transitions. [2019-10-22 11:25:49,655 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-22 11:25:49,655 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 687 transitions. [2019-10-22 11:25:49,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-10-22 11:25:49,658 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:49,659 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 11:25:49,859 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:25:49,860 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:49,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:49,860 INFO L82 PathProgramCache]: Analyzing trace with hash 32404688, now seen corresponding path program 1 times [2019-10-22 11:25:49,860 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:25:49,860 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1222951915] [2019-10-22 11:25:49,860 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f9cb6c24-e3ea-4d1a-b702-e2b64b440873/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 11:25:49,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:49,988 INFO L256 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 11:25:49,989 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:25:50,008 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 11:25:50,008 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:25:50,011 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 11:25:50,012 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1222951915] [2019-10-22 11:25:50,012 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:50,012 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-10-22 11:25:50,012 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511534333] [2019-10-22 11:25:50,012 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:25:50,013 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:25:50,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:25:50,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:25:50,013 INFO L87 Difference]: Start difference. First operand 513 states and 687 transitions. Second operand 5 states. [2019-10-22 11:25:50,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:50,347 INFO L93 Difference]: Finished difference Result 1205 states and 1637 transitions. [2019-10-22 11:25:50,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-22 11:25:50,348 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2019-10-22 11:25:50,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:50,352 INFO L225 Difference]: With dead ends: 1205 [2019-10-22 11:25:50,352 INFO L226 Difference]: Without dead ends: 1199 [2019-10-22 11:25:50,353 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 11:25:50,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2019-10-22 11:25:50,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 513. [2019-10-22 11:25:50,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2019-10-22 11:25:50,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 681 transitions. [2019-10-22 11:25:50,403 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 681 transitions. Word has length 40 [2019-10-22 11:25:50,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:50,403 INFO L462 AbstractCegarLoop]: Abstraction has 513 states and 681 transitions. [2019-10-22 11:25:50,404 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:25:50,404 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 681 transitions. [2019-10-22 11:25:50,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-10-22 11:25:50,406 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:50,406 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, 1, 1, 1, 1] [2019-10-22 11:25:50,607 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:25:50,607 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:50,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:50,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1511993871, now seen corresponding path program 1 times [2019-10-22 11:25:50,608 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:25:50,608 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1136453793] [2019-10-22 11:25:50,608 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f9cb6c24-e3ea-4d1a-b702-e2b64b440873/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 11:25:50,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:50,772 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 11:25:50,773 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:25:50,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:50,787 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:25:50,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:50,792 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1136453793] [2019-10-22 11:25:50,792 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:50,792 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-10-22 11:25:50,792 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787168555] [2019-10-22 11:25:50,792 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:25:50,793 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:25:50,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:25:50,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:25:50,793 INFO L87 Difference]: Start difference. First operand 513 states and 681 transitions. Second operand 5 states. [2019-10-22 11:25:50,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:50,997 INFO L93 Difference]: Finished difference Result 1508 states and 1965 transitions. [2019-10-22 11:25:50,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:25:50,998 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2019-10-22 11:25:50,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:51,001 INFO L225 Difference]: With dead ends: 1508 [2019-10-22 11:25:51,001 INFO L226 Difference]: Without dead ends: 1001 [2019-10-22 11:25:51,002 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 83 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 11:25:51,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2019-10-22 11:25:51,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 558. [2019-10-22 11:25:51,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 558 states. [2019-10-22 11:25:51,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 726 transitions. [2019-10-22 11:25:51,049 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 726 transitions. Word has length 43 [2019-10-22 11:25:51,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:51,049 INFO L462 AbstractCegarLoop]: Abstraction has 558 states and 726 transitions. [2019-10-22 11:25:51,049 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:25:51,049 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 726 transitions. [2019-10-22 11:25:51,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-10-22 11:25:51,050 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:51,051 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, 1, 1, 1, 1] [2019-10-22 11:25:51,251 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:25:51,251 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:51,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:51,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1002520781, now seen corresponding path program 1 times [2019-10-22 11:25:51,252 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:25:51,252 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [292320340] [2019-10-22 11:25:51,252 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f9cb6c24-e3ea-4d1a-b702-e2b64b440873/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 11:25:51,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:51,377 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 11:25:51,379 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:25:51,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:51,396 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:25:51,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:51,413 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [292320340] [2019-10-22 11:25:51,413 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:51,413 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-10-22 11:25:51,413 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158396862] [2019-10-22 11:25:51,414 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 11:25:51,414 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:25:51,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 11:25:51,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:25:51,414 INFO L87 Difference]: Start difference. First operand 558 states and 726 transitions. Second operand 6 states. [2019-10-22 11:25:51,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:51,593 INFO L93 Difference]: Finished difference Result 1388 states and 1788 transitions. [2019-10-22 11:25:51,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:25:51,594 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 43 [2019-10-22 11:25:51,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:51,596 INFO L225 Difference]: With dead ends: 1388 [2019-10-22 11:25:51,596 INFO L226 Difference]: Without dead ends: 765 [2019-10-22 11:25:51,597 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 81 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 11:25:51,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2019-10-22 11:25:51,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 435. [2019-10-22 11:25:51,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2019-10-22 11:25:51,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 562 transitions. [2019-10-22 11:25:51,644 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 562 transitions. Word has length 43 [2019-10-22 11:25:51,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:51,645 INFO L462 AbstractCegarLoop]: Abstraction has 435 states and 562 transitions. [2019-10-22 11:25:51,645 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 11:25:51,645 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 562 transitions. [2019-10-22 11:25:51,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-10-22 11:25:51,646 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:51,646 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, 1, 1, 1] [2019-10-22 11:25:51,846 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:25:51,846 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:51,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:51,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1995216740, now seen corresponding path program 1 times [2019-10-22 11:25:51,847 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:25:51,847 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1644681861] [2019-10-22 11:25:51,848 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f9cb6c24-e3ea-4d1a-b702-e2b64b440873/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 11:25:51,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:51,991 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:25:51,992 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:25:52,003 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 11:25:52,004 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:25:52,009 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 11:25:52,012 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1644681861] [2019-10-22 11:25:52,012 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:52,012 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-22 11:25:52,012 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368934854] [2019-10-22 11:25:52,013 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:25:52,013 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:25:52,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:25:52,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:25:52,014 INFO L87 Difference]: Start difference. First operand 435 states and 562 transitions. Second operand 3 states. [2019-10-22 11:25:52,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:52,039 INFO L93 Difference]: Finished difference Result 435 states and 562 transitions. [2019-10-22 11:25:52,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:25:52,040 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2019-10-22 11:25:52,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:52,045 INFO L225 Difference]: With dead ends: 435 [2019-10-22 11:25:52,045 INFO L226 Difference]: Without dead ends: 211 [2019-10-22 11:25:52,046 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:25:52,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2019-10-22 11:25:52,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2019-10-22 11:25:52,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2019-10-22 11:25:52,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 282 transitions. [2019-10-22 11:25:52,068 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 282 transitions. Word has length 48 [2019-10-22 11:25:52,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:52,068 INFO L462 AbstractCegarLoop]: Abstraction has 211 states and 282 transitions. [2019-10-22 11:25:52,068 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:25:52,068 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 282 transitions. [2019-10-22 11:25:52,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-22 11:25:52,070 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:52,070 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, 1, 1, 1] [2019-10-22 11:25:52,270 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:25:52,270 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:52,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:52,271 INFO L82 PathProgramCache]: Analyzing trace with hash 134497996, now seen corresponding path program 1 times [2019-10-22 11:25:52,271 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:25:52,271 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [502233487] [2019-10-22 11:25:52,271 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f9cb6c24-e3ea-4d1a-b702-e2b64b440873/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 11:25:52,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:52,414 INFO L256 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 11:25:52,416 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:25:52,457 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 11:25:52,457 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:25:52,501 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 11:25:52,501 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [502233487] [2019-10-22 11:25:52,502 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091554118] [2019-10-22 11:25:52,502 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f9cb6c24-e3ea-4d1a-b702-e2b64b440873/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 11:25:52,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:52,596 INFO L256 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 11:25:52,597 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:25:52,608 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 11:25:52,610 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:25:52,620 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 11:25:52,621 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-22 11:25:52,621 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5] total 9 [2019-10-22 11:25:52,621 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603798679] [2019-10-22 11:25:52,622 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-22 11:25:52,622 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:25:52,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-22 11:25:52,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-22 11:25:52,622 INFO L87 Difference]: Start difference. First operand 211 states and 282 transitions. Second operand 10 states. [2019-10-22 11:25:53,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:53,397 INFO L93 Difference]: Finished difference Result 1314 states and 1804 transitions. [2019-10-22 11:25:53,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-10-22 11:25:53,397 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 53 [2019-10-22 11:25:53,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:53,401 INFO L225 Difference]: With dead ends: 1314 [2019-10-22 11:25:53,401 INFO L226 Difference]: Without dead ends: 1151 [2019-10-22 11:25:53,402 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 199 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2019-10-22 11:25:53,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1151 states. [2019-10-22 11:25:53,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 350. [2019-10-22 11:25:53,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350 states. [2019-10-22 11:25:53,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 475 transitions. [2019-10-22 11:25:53,439 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 475 transitions. Word has length 53 [2019-10-22 11:25:53,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:53,440 INFO L462 AbstractCegarLoop]: Abstraction has 350 states and 475 transitions. [2019-10-22 11:25:53,440 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-22 11:25:53,440 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 475 transitions. [2019-10-22 11:25:53,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2019-10-22 11:25:53,440 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:53,440 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, 1, 1, 1] [2019-10-22 11:25:53,841 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 11:25:53,841 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:53,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:53,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1809371945, now seen corresponding path program 2 times [2019-10-22 11:25:53,842 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:25:53,842 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [337952763] [2019-10-22 11:25:53,842 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f9cb6c24-e3ea-4d1a-b702-e2b64b440873/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 11:25:55,556 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 11:25:55,556 INFO L250 tOrderPrioritization]: Conjunction of SSA is sat [2019-10-22 11:25:57,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:25:57,894 INFO L168 tionRefinementEngine]: Strategy WALRUS found a feasible trace [2019-10-22 11:25:57,894 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 11:25:58,096 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:25:58,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:25:58 BoogieIcfgContainer [2019-10-22 11:25:58,272 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:25:58,273 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:25:58,273 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:25:58,273 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:25:58,273 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:46" (3/4) ... [2019-10-22 11:25:58,276 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 11:25:58,420 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_f9cb6c24-e3ea-4d1a-b702-e2b64b440873/bin/utaipan/witness.graphml [2019-10-22 11:25:58,420 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:25:58,422 INFO L168 Benchmark]: Toolchain (without parser) took 13122.59 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 282.6 MB). Free memory was 945.6 MB in the beginning and 933.5 MB in the end (delta: 12.1 MB). Peak memory consumption was 294.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:58,423 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:25:58,423 INFO L168 Benchmark]: CACSL2BoogieTranslator took 570.47 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.5 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -133.4 MB). Peak memory consumption was 24.2 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:58,424 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.17 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:58,424 INFO L168 Benchmark]: Boogie Preprocessor took 60.43 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:25:58,424 INFO L168 Benchmark]: RCFGBuilder took 907.02 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 68.6 MB). Peak memory consumption was 68.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:58,424 INFO L168 Benchmark]: TraceAbstraction took 11367.54 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 175.1 MB). Free memory was 1.0 GB in the beginning and 960.8 MB in the end (delta: 42.6 MB). Peak memory consumption was 217.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:58,425 INFO L168 Benchmark]: Witness Printer took 148.05 ms. Allocated memory is still 1.3 GB. Free memory was 960.8 MB in the beginning and 933.5 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:58,426 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 570.47 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.5 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -133.4 MB). Peak memory consumption was 24.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 65.17 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 60.43 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 907.02 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 68.6 MB). Peak memory consumption was 68.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 11367.54 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 175.1 MB). Free memory was 1.0 GB in the beginning and 960.8 MB in the end (delta: 42.6 MB). Peak memory consumption was 217.7 MB. Max. memory is 11.5 GB. * Witness Printer took 148.05 ms. Allocated memory is still 1.3 GB. Free memory was 960.8 MB in the beginning and 933.5 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 828]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L219] int pumpRunning = 0; [L220] int systemActive = 1; [L599] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L868] int waterLevel = 1; [L869] int methaneLevelCritical = 0; [L121] int retValue_acc ; [L122] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L859] int retValue_acc ; [L862] retValue_acc = 1 [L863] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L146] int splverifierCounter ; [L147] int tmp ; [L148] int tmp___0 ; [L149] int tmp___1 ; [L150] int tmp___2 ; [L153] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L155] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L157] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L163] tmp = __VERIFIER_nondet_int() [L165] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L886] COND TRUE waterLevel < 2 [L887] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L173] tmp___0 = __VERIFIER_nondet_int() [L175] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L183] tmp___2 = __VERIFIER_nondet_int() [L185] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L227] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L234] COND TRUE \read(systemActive) [L282] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L285] COND FALSE !(\read(pumpRunning)) [L256] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L259] COND TRUE ! pumpRunning [L396] int retValue_acc ; [L397] int tmp ; [L398] int tmp___0 ; [L948] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L951] COND FALSE !(waterLevel < 2) [L955] retValue_acc = 0 [L956] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L402] tmp = isHighWaterSensorDry() [L404] COND FALSE !(\read(tmp)) [L407] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L409] retValue_acc = tmp___0 [L410] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L261] tmp = isHighWaterLevel() [L263] COND TRUE \read(tmp) [L315] int tmp ; [L340] int retValue_acc ; [L907] int retValue_acc ; [L910] retValue_acc = methaneLevelCritical [L911] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L344] retValue_acc = isMethaneLevelCritical() [L346] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L319] tmp = isMethaneAlarm() [L321] COND FALSE !(\read(tmp)) [L310] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L799] int tmp ; [L800] int tmp___0 ; [L939] int retValue_acc ; [L942] retValue_acc = waterLevel [L943] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L804] tmp = getWaterLevel() [L806] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L155] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L157] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L163] tmp = __VERIFIER_nondet_int() [L165] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L173] tmp___0 = __VERIFIER_nondet_int() [L175] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L183] tmp___2 = __VERIFIER_nondet_int() [L185] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L227] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L874] COND TRUE waterLevel > 0 [L875] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L234] COND TRUE \read(systemActive) [L282] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L285] COND TRUE \read(pumpRunning) [L340] int retValue_acc ; [L907] int retValue_acc ; [L910] retValue_acc = methaneLevelCritical [L911] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L344] retValue_acc = isMethaneLevelCritical() [L346] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L287] tmp = isMethaneAlarm() [L289] COND FALSE !(\read(tmp)) [L256] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L259] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L799] int tmp ; [L800] int tmp___0 ; [L939] int retValue_acc ; [L942] retValue_acc = waterLevel [L943] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L804] tmp = getWaterLevel() [L806] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L155] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L157] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L163] tmp = __VERIFIER_nondet_int() [L165] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L173] tmp___0 = __VERIFIER_nondet_int() [L175] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L183] tmp___2 = __VERIFIER_nondet_int() [L185] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L227] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L874] COND TRUE waterLevel > 0 [L875] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L234] COND TRUE \read(systemActive) [L282] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L285] COND TRUE \read(pumpRunning) [L340] int retValue_acc ; [L907] int retValue_acc ; [L910] retValue_acc = methaneLevelCritical [L911] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L344] retValue_acc = isMethaneLevelCritical() [L346] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L287] tmp = isMethaneAlarm() [L289] COND FALSE !(\read(tmp)) [L256] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L259] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L799] int tmp ; [L800] int tmp___0 ; [L939] int retValue_acc ; [L942] retValue_acc = waterLevel [L943] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L804] tmp = getWaterLevel() [L806] COND TRUE tmp == 0 [L351] int retValue_acc ; [L354] retValue_acc = pumpRunning [L355] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L808] tmp___0 = isPumpRunning() [L810] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L828] __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, 131 locations, 3 error locations. Result: UNSAFE, OverallTime: 11.3s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 1920 SDtfs, 4305 SDslu, 5189 SDs, 0 SdLazy, 864 SolverSat, 234 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 733 GetRequests, 670 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=558occurred in iteration=6, 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, 3071 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 429 NumberOfCodeBlocks, 429 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 694 ConstructedInterpolants, 0 QuantifiedInterpolants, 68730 SizeOfPredicates, 26 NumberOfNonLiveVariables, 2020 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...