./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/reducercommutativity/rangesum05.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_03c2e3da-b4b2-4b9e-988a-a4d2f6565c01/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_03c2e3da-b4b2-4b9e-988a-a4d2f6565c01/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_03c2e3da-b4b2-4b9e-988a-a4d2f6565c01/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_03c2e3da-b4b2-4b9e-988a-a4d2f6565c01/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/reducercommutativity/rangesum05.i -s /tmp/vcloud-vcloud-master/worker/run_dir_03c2e3da-b4b2-4b9e-988a-a4d2f6565c01/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_03c2e3da-b4b2-4b9e-988a-a4d2f6565c01/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1633e43e3f340ce4ae371cafc3d1ea0a9dad5739 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.1.25-f470102 [2019-12-07 11:31:48,339 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 11:31:48,340 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 11:31:48,347 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 11:31:48,348 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 11:31:48,348 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 11:31:48,349 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 11:31:48,351 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 11:31:48,352 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 11:31:48,352 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 11:31:48,353 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 11:31:48,354 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 11:31:48,354 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 11:31:48,355 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 11:31:48,355 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 11:31:48,356 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 11:31:48,357 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 11:31:48,357 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 11:31:48,359 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 11:31:48,361 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 11:31:48,362 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 11:31:48,362 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 11:31:48,363 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 11:31:48,364 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 11:31:48,365 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 11:31:48,366 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 11:31:48,366 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 11:31:48,366 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 11:31:48,367 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 11:31:48,367 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 11:31:48,367 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 11:31:48,368 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 11:31:48,368 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 11:31:48,369 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 11:31:48,369 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 11:31:48,369 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 11:31:48,370 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 11:31:48,370 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 11:31:48,370 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 11:31:48,370 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 11:31:48,371 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 11:31:48,371 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_03c2e3da-b4b2-4b9e-988a-a4d2f6565c01/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 11:31:48,380 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 11:31:48,380 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 11:31:48,381 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 11:31:48,381 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 11:31:48,381 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 11:31:48,382 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 11:31:48,382 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 11:31:48,382 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 11:31:48,382 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 11:31:48,382 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 11:31:48,382 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 11:31:48,382 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 11:31:48,382 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 11:31:48,382 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 11:31:48,383 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 11:31:48,383 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 11:31:48,383 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 11:31:48,383 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 11:31:48,383 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 11:31:48,383 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 11:31:48,383 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 11:31:48,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 11:31:48,383 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 11:31:48,384 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 11:31:48,384 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 11:31:48,384 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 11:31:48,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 11:31:48,384 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 11:31:48,384 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 11:31:48,384 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_03c2e3da-b4b2-4b9e-988a-a4d2f6565c01/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1633e43e3f340ce4ae371cafc3d1ea0a9dad5739 [2019-12-07 11:31:48,486 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 11:31:48,496 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 11:31:48,499 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 11:31:48,500 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 11:31:48,501 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 11:31:48,501 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_03c2e3da-b4b2-4b9e-988a-a4d2f6565c01/bin/uautomizer/../../sv-benchmarks/c/reducercommutativity/rangesum05.i [2019-12-07 11:31:48,542 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_03c2e3da-b4b2-4b9e-988a-a4d2f6565c01/bin/uautomizer/data/171c2ff50/8b24726ad9d34d1cb8ed7e0ea6a9008c/FLAGb7e89f04a [2019-12-07 11:31:48,856 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 11:31:48,857 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_03c2e3da-b4b2-4b9e-988a-a4d2f6565c01/sv-benchmarks/c/reducercommutativity/rangesum05.i [2019-12-07 11:31:48,860 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_03c2e3da-b4b2-4b9e-988a-a4d2f6565c01/bin/uautomizer/data/171c2ff50/8b24726ad9d34d1cb8ed7e0ea6a9008c/FLAGb7e89f04a [2019-12-07 11:31:48,869 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_03c2e3da-b4b2-4b9e-988a-a4d2f6565c01/bin/uautomizer/data/171c2ff50/8b24726ad9d34d1cb8ed7e0ea6a9008c [2019-12-07 11:31:48,871 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 11:31:48,872 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 11:31:48,872 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 11:31:48,873 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 11:31:48,875 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 11:31:48,875 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 11:31:48" (1/1) ... [2019-12-07 11:31:48,877 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@505a923d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:31:48, skipping insertion in model container [2019-12-07 11:31:48,877 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 11:31:48" (1/1) ... [2019-12-07 11:31:48,882 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 11:31:48,893 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 11:31:48,993 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 11:31:49,032 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 11:31:49,050 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 11:31:49,060 INFO L208 MainTranslator]: Completed translation [2019-12-07 11:31:49,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:31:49 WrapperNode [2019-12-07 11:31:49,060 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 11:31:49,061 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 11:31:49,061 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 11:31:49,061 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 11:31:49,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:31:49" (1/1) ... [2019-12-07 11:31:49,072 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:31:49" (1/1) ... [2019-12-07 11:31:49,095 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 11:31:49,095 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 11:31:49,095 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 11:31:49,095 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 11:31:49,102 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:31:49" (1/1) ... [2019-12-07 11:31:49,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:31:49" (1/1) ... [2019-12-07 11:31:49,104 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:31:49" (1/1) ... [2019-12-07 11:31:49,105 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:31:49" (1/1) ... [2019-12-07 11:31:49,110 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:31:49" (1/1) ... [2019-12-07 11:31:49,114 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:31:49" (1/1) ... [2019-12-07 11:31:49,115 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:31:49" (1/1) ... [2019-12-07 11:31:49,117 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 11:31:49,117 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 11:31:49,117 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 11:31:49,117 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 11:31:49,118 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:31:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_03c2e3da-b4b2-4b9e-988a-a4d2f6565c01/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 11:31:49,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 11:31:49,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 11:31:49,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 11:31:49,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 11:31:49,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 11:31:49,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 11:31:49,339 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 11:31:49,340 INFO L287 CfgBuilder]: Removed 17 assume(true) statements. [2019-12-07 11:31:49,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:31:49 BoogieIcfgContainer [2019-12-07 11:31:49,341 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 11:31:49,341 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 11:31:49,341 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 11:31:49,343 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 11:31:49,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 11:31:48" (1/3) ... [2019-12-07 11:31:49,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65bcb7b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 11:31:49, skipping insertion in model container [2019-12-07 11:31:49,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:31:49" (2/3) ... [2019-12-07 11:31:49,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65bcb7b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 11:31:49, skipping insertion in model container [2019-12-07 11:31:49,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:31:49" (3/3) ... [2019-12-07 11:31:49,345 INFO L109 eAbstractionObserver]: Analyzing ICFG rangesum05.i [2019-12-07 11:31:49,351 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 11:31:49,355 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 11:31:49,363 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 11:31:49,378 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 11:31:49,378 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 11:31:49,378 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 11:31:49,378 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 11:31:49,378 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 11:31:49,378 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 11:31:49,378 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 11:31:49,378 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 11:31:49,388 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-12-07 11:31:49,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-07 11:31:49,392 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:31:49,393 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:31:49,393 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:31:49,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:31:49,397 INFO L82 PathProgramCache]: Analyzing trace with hash -919167012, now seen corresponding path program 1 times [2019-12-07 11:31:49,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:31:49,404 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238044059] [2019-12-07 11:31:49,404 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:31:49,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:31:49,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:31:49,495 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238044059] [2019-12-07 11:31:49,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:31:49,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 11:31:49,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549536049] [2019-12-07 11:31:49,499 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 11:31:49,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:31:49,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 11:31:49,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 11:31:49,509 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2019-12-07 11:31:49,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:31:49,522 INFO L93 Difference]: Finished difference Result 56 states and 86 transitions. [2019-12-07 11:31:49,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 11:31:49,523 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2019-12-07 11:31:49,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:31:49,528 INFO L225 Difference]: With dead ends: 56 [2019-12-07 11:31:49,529 INFO L226 Difference]: Without dead ends: 26 [2019-12-07 11:31:49,532 INFO L630 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 [2019-12-07 11:31:49,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-12-07 11:31:49,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-12-07 11:31:49,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-12-07 11:31:49,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 36 transitions. [2019-12-07 11:31:49,554 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 36 transitions. Word has length 17 [2019-12-07 11:31:49,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:31:49,554 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 36 transitions. [2019-12-07 11:31:49,554 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 11:31:49,555 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions. [2019-12-07 11:31:49,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-07 11:31:49,555 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:31:49,555 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:31:49,555 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:31:49,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:31:49,556 INFO L82 PathProgramCache]: Analyzing trace with hash 164788593, now seen corresponding path program 1 times [2019-12-07 11:31:49,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:31:49,556 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738007687] [2019-12-07 11:31:49,556 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:31:49,565 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 11:31:49,565 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1415465703] [2019-12-07 11:31:49,565 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_03c2e3da-b4b2-4b9e-988a-a4d2f6565c01/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:31:49,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:31:49,618 INFO L264 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 11:31:49,622 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:31:49,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:31:49,641 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738007687] [2019-12-07 11:31:49,641 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 11:31:49,642 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415465703] [2019-12-07 11:31:49,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:31:49,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 11:31:49,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781971079] [2019-12-07 11:31:49,643 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 11:31:49,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:31:49,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 11:31:49,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 11:31:49,644 INFO L87 Difference]: Start difference. First operand 26 states and 36 transitions. Second operand 3 states. [2019-12-07 11:31:49,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:31:49,658 INFO L93 Difference]: Finished difference Result 50 states and 70 transitions. [2019-12-07 11:31:49,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 11:31:49,659 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-12-07 11:31:49,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:31:49,659 INFO L225 Difference]: With dead ends: 50 [2019-12-07 11:31:49,660 INFO L226 Difference]: Without dead ends: 28 [2019-12-07 11:31:49,660 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 11:31:49,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-12-07 11:31:49,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2019-12-07 11:31:49,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-12-07 11:31:49,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2019-12-07 11:31:49,665 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 17 [2019-12-07 11:31:49,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:31:49,666 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2019-12-07 11:31:49,666 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 11:31:49,666 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2019-12-07 11:31:49,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-07 11:31:49,667 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:31:49,667 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:31:49,867 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:31:49,868 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:31:49,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:31:49,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1403287377, now seen corresponding path program 1 times [2019-12-07 11:31:49,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:31:49,870 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622208899] [2019-12-07 11:31:49,870 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:31:49,911 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 11:31:49,911 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1263876470] [2019-12-07 11:31:49,911 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_03c2e3da-b4b2-4b9e-988a-a4d2f6565c01/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:31:49,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:31:49,956 INFO L264 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 11:31:49,957 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:31:49,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 11:31:49,964 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622208899] [2019-12-07 11:31:49,964 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 11:31:49,964 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263876470] [2019-12-07 11:31:49,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:31:49,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 11:31:49,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924066774] [2019-12-07 11:31:49,965 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 11:31:49,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:31:49,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 11:31:49,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 11:31:49,966 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 3 states. [2019-12-07 11:31:50,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:31:50,000 INFO L93 Difference]: Finished difference Result 57 states and 82 transitions. [2019-12-07 11:31:50,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 11:31:50,000 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-12-07 11:31:50,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:31:50,001 INFO L225 Difference]: With dead ends: 57 [2019-12-07 11:31:50,001 INFO L226 Difference]: Without dead ends: 36 [2019-12-07 11:31:50,002 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 11:31:50,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-12-07 11:31:50,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2019-12-07 11:31:50,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-12-07 11:31:50,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2019-12-07 11:31:50,007 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 43 transitions. Word has length 19 [2019-12-07 11:31:50,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:31:50,007 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 43 transitions. [2019-12-07 11:31:50,007 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 11:31:50,007 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions. [2019-12-07 11:31:50,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-12-07 11:31:50,008 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:31:50,008 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:31:50,209 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:31:50,209 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:31:50,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:31:50,211 INFO L82 PathProgramCache]: Analyzing trace with hash -1132417868, now seen corresponding path program 1 times [2019-12-07 11:31:50,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:31:50,212 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757337111] [2019-12-07 11:31:50,212 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:31:50,244 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 11:31:50,244 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [255420842] [2019-12-07 11:31:50,244 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_03c2e3da-b4b2-4b9e-988a-a4d2f6565c01/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:31:50,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:31:50,278 INFO L264 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 11:31:50,280 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:31:50,286 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-12-07 11:31:50,286 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757337111] [2019-12-07 11:31:50,286 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 11:31:50,286 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255420842] [2019-12-07 11:31:50,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:31:50,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 11:31:50,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584794678] [2019-12-07 11:31:50,287 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 11:31:50,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:31:50,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 11:31:50,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 11:31:50,288 INFO L87 Difference]: Start difference. First operand 33 states and 43 transitions. Second operand 3 states. [2019-12-07 11:31:50,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:31:50,350 INFO L93 Difference]: Finished difference Result 75 states and 100 transitions. [2019-12-07 11:31:50,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 11:31:50,350 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2019-12-07 11:31:50,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:31:50,351 INFO L225 Difference]: With dead ends: 75 [2019-12-07 11:31:50,351 INFO L226 Difference]: Without dead ends: 54 [2019-12-07 11:31:50,351 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 11:31:50,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-12-07 11:31:50,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 45. [2019-12-07 11:31:50,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-12-07 11:31:50,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 61 transitions. [2019-12-07 11:31:50,356 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 61 transitions. Word has length 28 [2019-12-07 11:31:50,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:31:50,356 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 61 transitions. [2019-12-07 11:31:50,356 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 11:31:50,356 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 61 transitions. [2019-12-07 11:31:50,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-12-07 11:31:50,357 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:31:50,357 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:31:50,557 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:31:50,558 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:31:50,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:31:50,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1168464304, now seen corresponding path program 1 times [2019-12-07 11:31:50,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:31:50,560 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258545812] [2019-12-07 11:31:50,560 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:31:50,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:31:50,633 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 11:31:50,634 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258545812] [2019-12-07 11:31:50,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:31:50,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 11:31:50,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717978951] [2019-12-07 11:31:50,634 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 11:31:50,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:31:50,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 11:31:50,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 11:31:50,635 INFO L87 Difference]: Start difference. First operand 45 states and 61 transitions. Second operand 4 states. [2019-12-07 11:31:50,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:31:50,675 INFO L93 Difference]: Finished difference Result 85 states and 118 transitions. [2019-12-07 11:31:50,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 11:31:50,676 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2019-12-07 11:31:50,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:31:50,676 INFO L225 Difference]: With dead ends: 85 [2019-12-07 11:31:50,677 INFO L226 Difference]: Without dead ends: 54 [2019-12-07 11:31:50,677 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 11:31:50,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-12-07 11:31:50,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 39. [2019-12-07 11:31:50,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-12-07 11:31:50,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 49 transitions. [2019-12-07 11:31:50,682 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 49 transitions. Word has length 28 [2019-12-07 11:31:50,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:31:50,682 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 49 transitions. [2019-12-07 11:31:50,682 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 11:31:50,683 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions. [2019-12-07 11:31:50,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-12-07 11:31:50,684 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:31:50,684 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-12-07 11:31:50,684 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:31:50,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:31:50,684 INFO L82 PathProgramCache]: Analyzing trace with hash -483510003, now seen corresponding path program 1 times [2019-12-07 11:31:50,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:31:50,685 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939926765] [2019-12-07 11:31:50,685 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:31:50,695 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 11:31:50,695 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [781727128] [2019-12-07 11:31:50,696 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_03c2e3da-b4b2-4b9e-988a-a4d2f6565c01/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:31:50,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:31:50,732 INFO L264 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 11:31:50,734 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:31:50,741 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-12-07 11:31:50,741 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939926765] [2019-12-07 11:31:50,741 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 11:31:50,741 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781727128] [2019-12-07 11:31:50,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:31:50,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 11:31:50,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435929549] [2019-12-07 11:31:50,742 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 11:31:50,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:31:50,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 11:31:50,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 11:31:50,743 INFO L87 Difference]: Start difference. First operand 39 states and 49 transitions. Second operand 3 states. [2019-12-07 11:31:50,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:31:50,753 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2019-12-07 11:31:50,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 11:31:50,754 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2019-12-07 11:31:50,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:31:50,755 INFO L225 Difference]: With dead ends: 54 [2019-12-07 11:31:50,755 INFO L226 Difference]: Without dead ends: 41 [2019-12-07 11:31:50,755 INFO L630 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 [2019-12-07 11:31:50,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-12-07 11:31:50,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2019-12-07 11:31:50,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-12-07 11:31:50,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2019-12-07 11:31:50,760 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 50 transitions. Word has length 37 [2019-12-07 11:31:50,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:31:50,761 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 50 transitions. [2019-12-07 11:31:50,761 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 11:31:50,761 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 50 transitions. [2019-12-07 11:31:50,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-12-07 11:31:50,762 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:31:50,762 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-12-07 11:31:50,962 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:31:50,963 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:31:50,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:31:50,963 INFO L82 PathProgramCache]: Analyzing trace with hash -623311861, now seen corresponding path program 1 times [2019-12-07 11:31:50,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:31:50,963 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624130012] [2019-12-07 11:31:50,963 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:31:50,972 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 11:31:50,972 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [295654325] [2019-12-07 11:31:50,973 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_03c2e3da-b4b2-4b9e-988a-a4d2f6565c01/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:31:51,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:31:51,013 INFO L264 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 11:31:51,015 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:31:51,024 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-12-07 11:31:51,024 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624130012] [2019-12-07 11:31:51,024 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 11:31:51,025 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295654325] [2019-12-07 11:31:51,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-12-07 11:31:51,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2019-12-07 11:31:51,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654721597] [2019-12-07 11:31:51,026 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 11:31:51,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:31:51,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 11:31:51,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 11:31:51,027 INFO L87 Difference]: Start difference. First operand 40 states and 50 transitions. Second operand 4 states. [2019-12-07 11:31:51,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:31:51,039 INFO L93 Difference]: Finished difference Result 78 states and 98 transitions. [2019-12-07 11:31:51,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 11:31:51,039 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2019-12-07 11:31:51,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:31:51,040 INFO L225 Difference]: With dead ends: 78 [2019-12-07 11:31:51,040 INFO L226 Difference]: Without dead ends: 43 [2019-12-07 11:31:51,040 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 11:31:51,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-12-07 11:31:51,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2019-12-07 11:31:51,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-12-07 11:31:51,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 52 transitions. [2019-12-07 11:31:51,044 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 52 transitions. Word has length 39 [2019-12-07 11:31:51,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:31:51,044 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 52 transitions. [2019-12-07 11:31:51,044 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 11:31:51,045 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 52 transitions. [2019-12-07 11:31:51,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-12-07 11:31:51,045 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:31:51,045 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:31:51,246 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:31:51,247 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:31:51,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:31:51,248 INFO L82 PathProgramCache]: Analyzing trace with hash -526389047, now seen corresponding path program 2 times [2019-12-07 11:31:51,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:31:51,249 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269233646] [2019-12-07 11:31:51,250 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:31:51,280 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 11:31:51,281 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1086313193] [2019-12-07 11:31:51,281 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_03c2e3da-b4b2-4b9e-988a-a4d2f6565c01/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:31:51,350 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 11:31:51,350 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 11:31:51,351 INFO L264 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 11:31:51,353 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:31:51,364 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-12-07 11:31:51,364 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269233646] [2019-12-07 11:31:51,365 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 11:31:51,365 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086313193] [2019-12-07 11:31:51,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-12-07 11:31:51,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2019-12-07 11:31:51,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673314469] [2019-12-07 11:31:51,366 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 11:31:51,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:31:51,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 11:31:51,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 11:31:51,366 INFO L87 Difference]: Start difference. First operand 42 states and 52 transitions. Second operand 4 states. [2019-12-07 11:31:51,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:31:51,407 INFO L93 Difference]: Finished difference Result 86 states and 108 transitions. [2019-12-07 11:31:51,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 11:31:51,408 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2019-12-07 11:31:51,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:31:51,409 INFO L225 Difference]: With dead ends: 86 [2019-12-07 11:31:51,409 INFO L226 Difference]: Without dead ends: 54 [2019-12-07 11:31:51,409 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 11:31:51,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-12-07 11:31:51,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2019-12-07 11:31:51,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2019-12-07 11:31:51,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2019-12-07 11:31:51,414 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 41 [2019-12-07 11:31:51,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:31:51,415 INFO L462 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2019-12-07 11:31:51,415 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 11:31:51,415 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2019-12-07 11:31:51,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-12-07 11:31:51,415 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:31:51,416 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:31:51,616 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:31:51,617 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:31:51,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:31:51,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1393104750, now seen corresponding path program 3 times [2019-12-07 11:31:51,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:31:51,619 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016175609] [2019-12-07 11:31:51,619 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:31:51,652 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 11:31:51,653 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [493166192] [2019-12-07 11:31:51,653 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_03c2e3da-b4b2-4b9e-988a-a4d2f6565c01/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:31:51,772 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-12-07 11:31:51,772 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 11:31:51,773 INFO L264 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 11:31:51,775 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:31:51,789 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-12-07 11:31:51,789 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016175609] [2019-12-07 11:31:51,789 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 11:31:51,790 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493166192] [2019-12-07 11:31:51,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-12-07 11:31:51,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2019-12-07 11:31:51,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897462548] [2019-12-07 11:31:51,790 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 11:31:51,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:31:51,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 11:31:51,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 11:31:51,791 INFO L87 Difference]: Start difference. First operand 51 states and 61 transitions. Second operand 4 states. [2019-12-07 11:31:51,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:31:51,803 INFO L93 Difference]: Finished difference Result 70 states and 83 transitions. [2019-12-07 11:31:51,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 11:31:51,804 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2019-12-07 11:31:51,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:31:51,804 INFO L225 Difference]: With dead ends: 70 [2019-12-07 11:31:51,804 INFO L226 Difference]: Without dead ends: 54 [2019-12-07 11:31:51,805 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 11:31:51,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-12-07 11:31:51,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2019-12-07 11:31:51,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-12-07 11:31:51,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 63 transitions. [2019-12-07 11:31:51,809 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 63 transitions. Word has length 50 [2019-12-07 11:31:51,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:31:51,809 INFO L462 AbstractCegarLoop]: Abstraction has 53 states and 63 transitions. [2019-12-07 11:31:51,809 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 11:31:51,809 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 63 transitions. [2019-12-07 11:31:51,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-12-07 11:31:51,810 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:31:51,810 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-12-07 11:31:52,011 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:31:52,012 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:31:52,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:31:52,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1656359148, now seen corresponding path program 4 times [2019-12-07 11:31:52,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:31:52,014 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805510150] [2019-12-07 11:31:52,014 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:31:52,047 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 11:31:52,048 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1397163891] [2019-12-07 11:31:52,048 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_03c2e3da-b4b2-4b9e-988a-a4d2f6565c01/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:31:52,177 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 11:31:52,177 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 11:31:52,179 INFO L264 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 11:31:52,183 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:31:52,203 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-12-07 11:31:52,203 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805510150] [2019-12-07 11:31:52,203 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 11:31:52,203 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397163891] [2019-12-07 11:31:52,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-12-07 11:31:52,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-12-07 11:31:52,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78548348] [2019-12-07 11:31:52,204 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 11:31:52,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:31:52,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 11:31:52,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-12-07 11:31:52,205 INFO L87 Difference]: Start difference. First operand 53 states and 63 transitions. Second operand 5 states. [2019-12-07 11:31:52,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:31:52,248 INFO L93 Difference]: Finished difference Result 102 states and 124 transitions. [2019-12-07 11:31:52,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 11:31:52,248 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2019-12-07 11:31:52,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:31:52,249 INFO L225 Difference]: With dead ends: 102 [2019-12-07 11:31:52,249 INFO L226 Difference]: Without dead ends: 62 [2019-12-07 11:31:52,249 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-12-07 11:31:52,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2019-12-07 11:31:52,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2019-12-07 11:31:52,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2019-12-07 11:31:52,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 72 transitions. [2019-12-07 11:31:52,253 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 72 transitions. Word has length 52 [2019-12-07 11:31:52,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:31:52,254 INFO L462 AbstractCegarLoop]: Abstraction has 62 states and 72 transitions. [2019-12-07 11:31:52,254 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 11:31:52,254 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 72 transitions. [2019-12-07 11:31:52,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-12-07 11:31:52,254 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:31:52,254 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:31:52,455 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:31:52,456 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:31:52,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:31:52,457 INFO L82 PathProgramCache]: Analyzing trace with hash -2133276057, now seen corresponding path program 5 times [2019-12-07 11:31:52,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:31:52,458 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99917307] [2019-12-07 11:31:52,471 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:31:52,499 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 11:31:52,499 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1932588942] [2019-12-07 11:31:52,500 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_03c2e3da-b4b2-4b9e-988a-a4d2f6565c01/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:31:52,574 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2019-12-07 11:31:52,574 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 11:31:52,575 INFO L264 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 11:31:52,577 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:31:52,586 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2019-12-07 11:31:52,587 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99917307] [2019-12-07 11:31:52,587 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 11:31:52,587 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932588942] [2019-12-07 11:31:52,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:31:52,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 11:31:52,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634730920] [2019-12-07 11:31:52,587 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 11:31:52,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:31:52,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 11:31:52,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 11:31:52,588 INFO L87 Difference]: Start difference. First operand 62 states and 72 transitions. Second operand 4 states. [2019-12-07 11:31:52,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:31:52,607 INFO L93 Difference]: Finished difference Result 111 states and 130 transitions. [2019-12-07 11:31:52,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 11:31:52,607 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2019-12-07 11:31:52,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:31:52,608 INFO L225 Difference]: With dead ends: 111 [2019-12-07 11:31:52,608 INFO L226 Difference]: Without dead ends: 71 [2019-12-07 11:31:52,608 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 11:31:52,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2019-12-07 11:31:52,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 62. [2019-12-07 11:31:52,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2019-12-07 11:31:52,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 69 transitions. [2019-12-07 11:31:52,612 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 69 transitions. Word has length 61 [2019-12-07 11:31:52,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:31:52,613 INFO L462 AbstractCegarLoop]: Abstraction has 62 states and 69 transitions. [2019-12-07 11:31:52,613 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 11:31:52,613 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 69 transitions. [2019-12-07 11:31:52,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-12-07 11:31:52,613 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:31:52,613 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:31:52,814 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:31:52,815 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:31:52,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:31:52,816 INFO L82 PathProgramCache]: Analyzing trace with hash 2021142629, now seen corresponding path program 1 times [2019-12-07 11:31:52,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:31:52,816 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102823860] [2019-12-07 11:31:52,817 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:31:52,831 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 11:31:52,831 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1920615293] [2019-12-07 11:31:52,831 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_03c2e3da-b4b2-4b9e-988a-a4d2f6565c01/bin/uautomizer/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 [2019-12-07 11:31:52,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:31:52,876 INFO L264 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 11:31:52,878 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:31:52,891 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-12-07 11:31:52,891 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102823860] [2019-12-07 11:31:52,891 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 11:31:52,891 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920615293] [2019-12-07 11:31:52,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-12-07 11:31:52,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-12-07 11:31:52,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215210933] [2019-12-07 11:31:52,892 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 11:31:52,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:31:52,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 11:31:52,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-12-07 11:31:52,892 INFO L87 Difference]: Start difference. First operand 62 states and 69 transitions. Second operand 5 states. [2019-12-07 11:31:52,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:31:52,904 INFO L93 Difference]: Finished difference Result 120 states and 134 transitions. [2019-12-07 11:31:52,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 11:31:52,904 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2019-12-07 11:31:52,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:31:52,905 INFO L225 Difference]: With dead ends: 120 [2019-12-07 11:31:52,905 INFO L226 Difference]: Without dead ends: 65 [2019-12-07 11:31:52,905 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-12-07 11:31:52,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2019-12-07 11:31:52,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2019-12-07 11:31:52,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2019-12-07 11:31:52,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 71 transitions. [2019-12-07 11:31:52,909 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 71 transitions. Word has length 61 [2019-12-07 11:31:52,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:31:52,909 INFO L462 AbstractCegarLoop]: Abstraction has 64 states and 71 transitions. [2019-12-07 11:31:52,909 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 11:31:52,909 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 71 transitions. [2019-12-07 11:31:52,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-12-07 11:31:52,910 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:31:52,910 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:31:53,110 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:31:53,111 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:31:53,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:31:53,112 INFO L82 PathProgramCache]: Analyzing trace with hash 265673379, now seen corresponding path program 2 times [2019-12-07 11:31:53,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:31:53,113 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999110765] [2019-12-07 11:31:53,113 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:31:53,124 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 11:31:53,125 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1010546924] [2019-12-07 11:31:53,125 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_03c2e3da-b4b2-4b9e-988a-a4d2f6565c01/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:31:53,163 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 11:31:53,163 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 11:31:53,164 INFO L264 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 11:31:53,165 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:31:53,184 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-12-07 11:31:53,184 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999110765] [2019-12-07 11:31:53,184 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 11:31:53,184 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010546924] [2019-12-07 11:31:53,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-12-07 11:31:53,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-12-07 11:31:53,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009242119] [2019-12-07 11:31:53,185 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 11:31:53,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:31:53,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 11:31:53,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-12-07 11:31:53,185 INFO L87 Difference]: Start difference. First operand 64 states and 71 transitions. Second operand 6 states. [2019-12-07 11:31:53,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:31:53,198 INFO L93 Difference]: Finished difference Result 122 states and 136 transitions. [2019-12-07 11:31:53,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 11:31:53,199 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 63 [2019-12-07 11:31:53,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:31:53,199 INFO L225 Difference]: With dead ends: 122 [2019-12-07 11:31:53,199 INFO L226 Difference]: Without dead ends: 67 [2019-12-07 11:31:53,200 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-12-07 11:31:53,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2019-12-07 11:31:53,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2019-12-07 11:31:53,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2019-12-07 11:31:53,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 73 transitions. [2019-12-07 11:31:53,203 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 73 transitions. Word has length 63 [2019-12-07 11:31:53,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:31:53,203 INFO L462 AbstractCegarLoop]: Abstraction has 66 states and 73 transitions. [2019-12-07 11:31:53,203 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 11:31:53,203 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 73 transitions. [2019-12-07 11:31:53,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-12-07 11:31:53,204 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:31:53,204 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:31:53,404 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:31:53,405 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:31:53,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:31:53,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1181871457, now seen corresponding path program 3 times [2019-12-07 11:31:53,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:31:53,407 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637417571] [2019-12-07 11:31:53,407 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:31:53,434 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 11:31:53,435 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [980825085] [2019-12-07 11:31:53,435 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_03c2e3da-b4b2-4b9e-988a-a4d2f6565c01/bin/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:31:53,505 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-12-07 11:31:53,505 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 11:31:53,506 INFO L264 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 11:31:53,507 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:31:53,519 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2019-12-07 11:31:53,519 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637417571] [2019-12-07 11:31:53,519 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 11:31:53,519 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980825085] [2019-12-07 11:31:53,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-12-07 11:31:53,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-12-07 11:31:53,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266744336] [2019-12-07 11:31:53,520 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 11:31:53,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:31:53,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 11:31:53,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-12-07 11:31:53,520 INFO L87 Difference]: Start difference. First operand 66 states and 73 transitions. Second operand 5 states. [2019-12-07 11:31:53,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:31:53,533 INFO L93 Difference]: Finished difference Result 88 states and 97 transitions. [2019-12-07 11:31:53,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 11:31:53,534 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2019-12-07 11:31:53,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:31:53,534 INFO L225 Difference]: With dead ends: 88 [2019-12-07 11:31:53,534 INFO L226 Difference]: Without dead ends: 69 [2019-12-07 11:31:53,535 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-12-07 11:31:53,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2019-12-07 11:31:53,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2019-12-07 11:31:53,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2019-12-07 11:31:53,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 75 transitions. [2019-12-07 11:31:53,538 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 75 transitions. Word has length 65 [2019-12-07 11:31:53,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:31:53,538 INFO L462 AbstractCegarLoop]: Abstraction has 68 states and 75 transitions. [2019-12-07 11:31:53,538 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 11:31:53,538 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 75 transitions. [2019-12-07 11:31:53,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-12-07 11:31:53,539 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:31:53,539 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:31:53,739 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:31:53,740 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:31:53,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:31:53,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1302328097, now seen corresponding path program 4 times [2019-12-07 11:31:53,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:31:53,742 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908986121] [2019-12-07 11:31:53,742 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:31:53,773 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 11:31:53,774 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1784954650] [2019-12-07 11:31:53,774 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_03c2e3da-b4b2-4b9e-988a-a4d2f6565c01/bin/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:31:53,823 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 11:31:53,823 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 11:31:53,823 INFO L264 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 11:31:53,824 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:31:53,847 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2019-12-07 11:31:53,847 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908986121] [2019-12-07 11:31:53,847 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 11:31:53,847 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784954650] [2019-12-07 11:31:53,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-12-07 11:31:53,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-12-07 11:31:53,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399299287] [2019-12-07 11:31:53,848 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 11:31:53,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:31:53,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 11:31:53,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-12-07 11:31:53,848 INFO L87 Difference]: Start difference. First operand 68 states and 75 transitions. Second operand 7 states. [2019-12-07 11:31:53,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:31:53,900 INFO L93 Difference]: Finished difference Result 120 states and 137 transitions. [2019-12-07 11:31:53,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 11:31:53,900 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 67 [2019-12-07 11:31:53,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:31:53,900 INFO L225 Difference]: With dead ends: 120 [2019-12-07 11:31:53,901 INFO L226 Difference]: Without dead ends: 77 [2019-12-07 11:31:53,901 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-12-07 11:31:53,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2019-12-07 11:31:53,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2019-12-07 11:31:53,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2019-12-07 11:31:53,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 87 transitions. [2019-12-07 11:31:53,905 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 87 transitions. Word has length 67 [2019-12-07 11:31:53,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:31:53,905 INFO L462 AbstractCegarLoop]: Abstraction has 77 states and 87 transitions. [2019-12-07 11:31:53,905 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 11:31:53,905 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 87 transitions. [2019-12-07 11:31:53,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2019-12-07 11:31:53,906 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:31:53,906 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:31:54,106 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:31:54,107 INFO L410 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:31:54,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:31:54,108 INFO L82 PathProgramCache]: Analyzing trace with hash -153484414, now seen corresponding path program 5 times [2019-12-07 11:31:54,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:31:54,109 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567969107] [2019-12-07 11:31:54,109 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:31:54,143 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 11:31:54,143 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1183091405] [2019-12-07 11:31:54,143 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_03c2e3da-b4b2-4b9e-988a-a4d2f6565c01/bin/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:31:54,209 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-12-07 11:31:54,209 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 11:31:54,210 INFO L264 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 11:31:54,211 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:31:54,230 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2019-12-07 11:31:54,230 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567969107] [2019-12-07 11:31:54,231 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 11:31:54,231 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183091405] [2019-12-07 11:31:54,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-12-07 11:31:54,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-12-07 11:31:54,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452311710] [2019-12-07 11:31:54,231 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 11:31:54,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:31:54,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 11:31:54,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-12-07 11:31:54,232 INFO L87 Difference]: Start difference. First operand 77 states and 87 transitions. Second operand 7 states. [2019-12-07 11:31:54,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:31:54,247 INFO L93 Difference]: Finished difference Result 145 states and 165 transitions. [2019-12-07 11:31:54,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 11:31:54,247 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 76 [2019-12-07 11:31:54,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:31:54,248 INFO L225 Difference]: With dead ends: 145 [2019-12-07 11:31:54,248 INFO L226 Difference]: Without dead ends: 79 [2019-12-07 11:31:54,248 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-12-07 11:31:54,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2019-12-07 11:31:54,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2019-12-07 11:31:54,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2019-12-07 11:31:54,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 89 transitions. [2019-12-07 11:31:54,252 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 89 transitions. Word has length 76 [2019-12-07 11:31:54,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:31:54,252 INFO L462 AbstractCegarLoop]: Abstraction has 79 states and 89 transitions. [2019-12-07 11:31:54,252 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 11:31:54,253 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 89 transitions. [2019-12-07 11:31:54,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-12-07 11:31:54,253 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:31:54,253 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:31:54,454 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:31:54,454 INFO L410 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:31:54,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:31:54,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1735993980, now seen corresponding path program 6 times [2019-12-07 11:31:54,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:31:54,455 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563873851] [2019-12-07 11:31:54,455 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:31:54,465 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 11:31:54,465 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [85480380] [2019-12-07 11:31:54,465 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_03c2e3da-b4b2-4b9e-988a-a4d2f6565c01/bin/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:32:13,378 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2019-12-07 11:32:13,378 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 11:32:13,379 INFO L264 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 11:32:13,380 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:32:13,397 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2019-12-07 11:32:13,397 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563873851] [2019-12-07 11:32:13,397 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 11:32:13,397 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85480380] [2019-12-07 11:32:13,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-12-07 11:32:13,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-12-07 11:32:13,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616339460] [2019-12-07 11:32:13,398 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 11:32:13,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:32:13,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 11:32:13,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-12-07 11:32:13,398 INFO L87 Difference]: Start difference. First operand 79 states and 89 transitions. Second operand 6 states. [2019-12-07 11:32:13,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:32:13,410 INFO L93 Difference]: Finished difference Result 103 states and 116 transitions. [2019-12-07 11:32:13,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 11:32:13,410 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2019-12-07 11:32:13,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:32:13,411 INFO L225 Difference]: With dead ends: 103 [2019-12-07 11:32:13,411 INFO L226 Difference]: Without dead ends: 81 [2019-12-07 11:32:13,411 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-12-07 11:32:13,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2019-12-07 11:32:13,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2019-12-07 11:32:13,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2019-12-07 11:32:13,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 91 transitions. [2019-12-07 11:32:13,414 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 91 transitions. Word has length 78 [2019-12-07 11:32:13,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:32:13,414 INFO L462 AbstractCegarLoop]: Abstraction has 81 states and 91 transitions. [2019-12-07 11:32:13,414 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 11:32:13,414 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 91 transitions. [2019-12-07 11:32:13,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-12-07 11:32:13,414 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:32:13,414 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:32:13,615 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:32:13,615 INFO L410 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:32:13,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:32:13,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1345801862, now seen corresponding path program 7 times [2019-12-07 11:32:13,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:32:13,617 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600924230] [2019-12-07 11:32:13,617 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:32:13,638 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 11:32:13,639 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1327577465] [2019-12-07 11:32:13,639 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_03c2e3da-b4b2-4b9e-988a-a4d2f6565c01/bin/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:32:13,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:32:14,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:32:14,046 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:32:14,046 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 11:32:14,247 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:32:14,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 11:32:14 BoogieIcfgContainer [2019-12-07 11:32:14,299 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 11:32:14,299 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 11:32:14,299 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 11:32:14,299 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 11:32:14,299 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:31:49" (3/4) ... [2019-12-07 11:32:14,301 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 11:32:14,355 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_03c2e3da-b4b2-4b9e-988a-a4d2f6565c01/bin/uautomizer/witness.graphml [2019-12-07 11:32:14,356 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 11:32:14,357 INFO L168 Benchmark]: Toolchain (without parser) took 25484.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -190.3 MB). Peak memory consumption was 209.0 MB. Max. memory is 11.5 GB. [2019-12-07 11:32:14,357 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 955.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:32:14,357 INFO L168 Benchmark]: CACSL2BoogieTranslator took 188.23 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 95.4 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -150.9 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-12-07 11:32:14,358 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.75 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. [2019-12-07 11:32:14,358 INFO L168 Benchmark]: Boogie Preprocessor took 22.04 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 11:32:14,358 INFO L168 Benchmark]: RCFGBuilder took 223.51 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: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. [2019-12-07 11:32:14,358 INFO L168 Benchmark]: TraceAbstraction took 24957.66 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 824.9 MB in the end (delta: 236.8 MB). Peak memory consumption was 236.8 MB. Max. memory is 11.5 GB. [2019-12-07 11:32:14,358 INFO L168 Benchmark]: Witness Printer took 56.62 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 34.6 MB). Free memory was 824.9 MB in the beginning and 1.1 GB in the end (delta: -303.4 MB). Peak memory consumption was 483.7 kB. Max. memory is 11.5 GB. [2019-12-07 11:32:14,360 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 955.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 188.23 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 95.4 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -150.9 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 33.75 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 22.04 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 223.51 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: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 24957.66 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 824.9 MB in the end (delta: 236.8 MB). Peak memory consumption was 236.8 MB. Max. memory is 11.5 GB. * Witness Printer took 56.62 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 34.6 MB). Free memory was 824.9 MB in the beginning and 1.1 GB in the end (delta: -303.4 MB). Peak memory consumption was 483.7 kB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 50]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L31] int x[5]; [L5] int i; [L6] i = 0 [L6] COND TRUE i < 5 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 5 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 5 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 5 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 5 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND FALSE !(i < 5) [L33] int temp; [L34] int ret; [L35] int ret2; [L36] int ret5; [L13] int i; [L14] long long ret; [L15] ret = 0 [L16] int cnt = 0; [L17] i = 0 [L17] COND TRUE i < 5 [L18] COND FALSE !(i > 5/2) [L17] i++ [L17] COND TRUE i < 5 [L18] COND FALSE !(i > 5/2) [L17] i++ [L17] COND TRUE i < 5 [L18] COND FALSE !(i > 5/2) [L17] i++ [L17] COND TRUE i < 5 [L18] COND TRUE i > 5/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 5 [L18] COND TRUE i > 5/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND FALSE !(i < 5) [L23] COND TRUE cnt !=0 [L24] return ret / cnt; [L38] ret = rangesum(x) [L40] EXPR x[0] [L40] temp=x[0] [L40] EXPR x[1] [L40] x[0] = x[1] [L40] x[1] = temp [L13] int i; [L14] long long ret; [L15] ret = 0 [L16] int cnt = 0; [L17] i = 0 [L17] COND TRUE i < 5 [L18] COND FALSE !(i > 5/2) [L17] i++ [L17] COND TRUE i < 5 [L18] COND FALSE !(i > 5/2) [L17] i++ [L17] COND TRUE i < 5 [L18] COND FALSE !(i > 5/2) [L17] i++ [L17] COND TRUE i < 5 [L18] COND TRUE i > 5/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 5 [L18] COND TRUE i > 5/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND FALSE !(i < 5) [L23] COND TRUE cnt !=0 [L24] return ret / cnt; [L41] ret2 = rangesum(x) [L42] EXPR x[0] [L42] temp=x[0] [L43] int i =0 ; [L43] COND TRUE i<5 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<5 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<5 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<5 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ [L43] COND FALSE !(i<5 -1) [L46] x[5 -1] = temp [L13] int i; [L14] long long ret; [L15] ret = 0 [L16] int cnt = 0; [L17] i = 0 [L17] COND TRUE i < 5 [L18] COND FALSE !(i > 5/2) [L17] i++ [L17] COND TRUE i < 5 [L18] COND FALSE !(i > 5/2) [L17] i++ [L17] COND TRUE i < 5 [L18] COND FALSE !(i > 5/2) [L17] i++ [L17] COND TRUE i < 5 [L18] COND TRUE i > 5/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 5 [L18] COND TRUE i > 5/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND FALSE !(i < 5) [L23] COND TRUE cnt !=0 [L24] return ret / cnt; [L47] ret5 = rangesum(x) [L49] COND TRUE ret != ret2 || ret !=ret5 [L50] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 1 error locations. Result: UNSAFE, OverallTime: 24.8s, OverallIterations: 18, TraceHistogramMax: 5, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 523 SDtfs, 187 SDslu, 565 SDs, 0 SdLazy, 304 SolverSat, 107 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 745 GetRequests, 704 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81occurred in iteration=17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 17 MinimizatonAttempts, 46 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 19.3s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 879 NumberOfCodeBlocks, 816 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 782 ConstructedInterpolants, 0 QuantifiedInterpolants, 52874 SizeOfPredicates, 14 NumberOfNonLiveVariables, 2308 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 17 InterpolantComputations, 7 PerfectInterpolantSequences, 745/820 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...