./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench/cohendiv.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_06667406-82e6-4335-8ee3-5aa124df73bd/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_06667406-82e6-4335-8ee3-5aa124df73bd/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_06667406-82e6-4335-8ee3-5aa124df73bd/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_06667406-82e6-4335-8ee3-5aa124df73bd/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench/cohendiv.c -s /tmp/vcloud-vcloud-master/worker/run_dir_06667406-82e6-4335-8ee3-5aa124df73bd/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_06667406-82e6-4335-8ee3-5aa124df73bd/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 4602cfc6f42e03e10f97d6280c5c53ef543e38cc ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 08:08:22,309 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 08:08:22,311 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 08:08:22,321 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 08:08:22,322 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 08:08:22,323 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 08:08:22,324 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 08:08:22,326 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 08:08:22,328 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 08:08:22,329 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 08:08:22,330 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 08:08:22,331 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 08:08:22,331 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 08:08:22,332 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 08:08:22,333 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 08:08:22,334 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 08:08:22,335 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 08:08:22,335 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 08:08:22,337 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 08:08:22,340 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 08:08:22,341 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 08:08:22,343 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 08:08:22,344 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 08:08:22,344 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 08:08:22,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 08:08:22,347 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 08:08:22,347 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 08:08:22,348 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 08:08:22,348 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 08:08:22,349 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 08:08:22,349 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 08:08:22,350 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 08:08:22,351 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 08:08:22,351 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 08:08:22,352 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 08:08:22,352 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 08:08:22,353 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 08:08:22,353 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 08:08:22,353 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 08:08:22,354 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 08:08:22,355 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 08:08:22,355 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_06667406-82e6-4335-8ee3-5aa124df73bd/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 08:08:22,369 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 08:08:22,369 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 08:08:22,370 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 08:08:22,370 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 08:08:22,370 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 08:08:22,371 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 08:08:22,371 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 08:08:22,371 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 08:08:22,371 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 08:08:22,372 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 08:08:22,372 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 08:08:22,372 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 08:08:22,372 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 08:08:22,373 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 08:08:22,373 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 08:08:22,373 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 08:08:22,373 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 08:08:22,374 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 08:08:22,374 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 08:08:22,374 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 08:08:22,374 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 08:08:22,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 08:08:22,375 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 08:08:22,375 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 08:08:22,375 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 08:08:22,375 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 08:08:22,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 08:08:22,376 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 08:08:22,376 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_06667406-82e6-4335-8ee3-5aa124df73bd/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 -> 4602cfc6f42e03e10f97d6280c5c53ef543e38cc [2019-11-20 08:08:22,516 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 08:08:22,526 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 08:08:22,529 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 08:08:22,531 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 08:08:22,531 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 08:08:22,532 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_06667406-82e6-4335-8ee3-5aa124df73bd/bin/uautomizer/../../sv-benchmarks/c/nla-digbench/cohendiv.c [2019-11-20 08:08:22,604 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_06667406-82e6-4335-8ee3-5aa124df73bd/bin/uautomizer/data/d97b5cb14/01f53dcd20cf4508a3841dc9b0d26105/FLAGc471e7051 [2019-11-20 08:08:23,023 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 08:08:23,024 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_06667406-82e6-4335-8ee3-5aa124df73bd/sv-benchmarks/c/nla-digbench/cohendiv.c [2019-11-20 08:08:23,031 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_06667406-82e6-4335-8ee3-5aa124df73bd/bin/uautomizer/data/d97b5cb14/01f53dcd20cf4508a3841dc9b0d26105/FLAGc471e7051 [2019-11-20 08:08:23,434 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_06667406-82e6-4335-8ee3-5aa124df73bd/bin/uautomizer/data/d97b5cb14/01f53dcd20cf4508a3841dc9b0d26105 [2019-11-20 08:08:23,437 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 08:08:23,439 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 08:08:23,440 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 08:08:23,440 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 08:08:23,443 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 08:08:23,444 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:08:23" (1/1) ... [2019-11-20 08:08:23,446 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54d55c6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:08:23, skipping insertion in model container [2019-11-20 08:08:23,446 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:08:23" (1/1) ... [2019-11-20 08:08:23,453 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 08:08:23,470 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 08:08:23,618 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 08:08:23,621 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 08:08:23,719 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 08:08:23,731 INFO L192 MainTranslator]: Completed translation [2019-11-20 08:08:23,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:08:23 WrapperNode [2019-11-20 08:08:23,732 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 08:08:23,733 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 08:08:23,733 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 08:08:23,733 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 08:08:23,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:08:23" (1/1) ... [2019-11-20 08:08:23,746 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:08:23" (1/1) ... [2019-11-20 08:08:23,766 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 08:08:23,767 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 08:08:23,767 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 08:08:23,767 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 08:08:23,776 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:08:23" (1/1) ... [2019-11-20 08:08:23,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:08:23" (1/1) ... [2019-11-20 08:08:23,777 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:08:23" (1/1) ... [2019-11-20 08:08:23,777 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:08:23" (1/1) ... [2019-11-20 08:08:23,781 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:08:23" (1/1) ... [2019-11-20 08:08:23,785 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:08:23" (1/1) ... [2019-11-20 08:08:23,787 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:08:23" (1/1) ... [2019-11-20 08:08:23,789 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 08:08:23,789 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 08:08:23,790 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 08:08:23,790 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 08:08:23,791 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:08:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_06667406-82e6-4335-8ee3-5aa124df73bd/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 [2019-11-20 08:08:23,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 08:08:23,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 08:08:24,149 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 08:08:24,149 INFO L285 CfgBuilder]: Removed 20 assume(true) statements. [2019-11-20 08:08:24,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:08:24 BoogieIcfgContainer [2019-11-20 08:08:24,150 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 08:08:24,152 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 08:08:24,152 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 08:08:24,165 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 08:08:24,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:08:23" (1/3) ... [2019-11-20 08:08:24,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a7d8c6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:08:24, skipping insertion in model container [2019-11-20 08:08:24,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:08:23" (2/3) ... [2019-11-20 08:08:24,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a7d8c6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:08:24, skipping insertion in model container [2019-11-20 08:08:24,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:08:24" (3/3) ... [2019-11-20 08:08:24,177 INFO L109 eAbstractionObserver]: Analyzing ICFG cohendiv.c [2019-11-20 08:08:24,186 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 08:08:24,205 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2019-11-20 08:08:24,217 INFO L249 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2019-11-20 08:08:24,273 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 08:08:24,274 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 08:08:24,274 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 08:08:24,274 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 08:08:24,274 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 08:08:24,274 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 08:08:24,274 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 08:08:24,275 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 08:08:24,296 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2019-11-20 08:08:24,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-20 08:08:24,301 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:08:24,302 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-20 08:08:24,303 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 08:08:24,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:08:24,309 INFO L82 PathProgramCache]: Analyzing trace with hash 963340, now seen corresponding path program 1 times [2019-11-20 08:08:24,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 08:08:24,320 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257861063] [2019-11-20 08:08:24,320 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 08:08:24,410 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-20 08:08:24,411 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1407355405] [2019-11-20 08:08:24,411 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_06667406-82e6-4335-8ee3-5aa124df73bd/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 [2019-11-20 08:08:24,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 08:08:24,470 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-20 08:08:24,475 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 08:08:24,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 08:08:24,560 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257861063] [2019-11-20 08:08:24,560 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-20 08:08:24,560 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407355405] [2019-11-20 08:08:24,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 08:08:24,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-20 08:08:24,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094456115] [2019-11-20 08:08:24,567 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 08:08:24,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 08:08:24,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 08:08:24,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 08:08:24,580 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 4 states. [2019-11-20 08:08:24,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 08:08:24,719 INFO L93 Difference]: Finished difference Result 86 states and 115 transitions. [2019-11-20 08:08:24,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 08:08:24,721 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-11-20 08:08:24,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 08:08:24,728 INFO L225 Difference]: With dead ends: 86 [2019-11-20 08:08:24,728 INFO L226 Difference]: Without dead ends: 43 [2019-11-20 08:08:24,732 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-20 08:08:24,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-11-20 08:08:24,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 34. [2019-11-20 08:08:24,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-20 08:08:24,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2019-11-20 08:08:24,772 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 4 [2019-11-20 08:08:24,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 08:08:24,772 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2019-11-20 08:08:24,772 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 08:08:24,772 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2019-11-20 08:08:24,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-20 08:08:24,773 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:08:24,773 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-20 08:08:24,974 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 08:08:24,975 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 08:08:24,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:08:24,975 INFO L82 PathProgramCache]: Analyzing trace with hash 925925231, now seen corresponding path program 1 times [2019-11-20 08:08:24,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 08:08:24,976 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947949889] [2019-11-20 08:08:24,976 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 08:08:24,988 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-20 08:08:24,988 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1243637457] [2019-11-20 08:08:24,988 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_06667406-82e6-4335-8ee3-5aa124df73bd/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 [2019-11-20 08:08:25,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 08:08:25,027 INFO L255 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-20 08:08:25,028 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 08:08:25,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 08:08:25,054 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947949889] [2019-11-20 08:08:25,054 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-20 08:08:25,054 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243637457] [2019-11-20 08:08:25,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 08:08:25,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-20 08:08:25,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127585611] [2019-11-20 08:08:25,056 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 08:08:25,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 08:08:25,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 08:08:25,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 08:08:25,057 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 4 states. [2019-11-20 08:08:25,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 08:08:25,200 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2019-11-20 08:08:25,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 08:08:25,200 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2019-11-20 08:08:25,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 08:08:25,202 INFO L225 Difference]: With dead ends: 62 [2019-11-20 08:08:25,202 INFO L226 Difference]: Without dead ends: 54 [2019-11-20 08:08:25,203 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-20 08:08:25,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-11-20 08:08:25,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 46. [2019-11-20 08:08:25,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-11-20 08:08:25,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2019-11-20 08:08:25,213 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 6 [2019-11-20 08:08:25,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 08:08:25,213 INFO L462 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2019-11-20 08:08:25,213 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 08:08:25,214 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2019-11-20 08:08:25,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-20 08:08:25,214 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:08:25,214 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 08:08:25,418 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 08:08:25,419 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 08:08:25,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:08:25,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1963542107, now seen corresponding path program 1 times [2019-11-20 08:08:25,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 08:08:25,420 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191805438] [2019-11-20 08:08:25,420 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 08:08:25,425 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-20 08:08:25,426 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [836895402] [2019-11-20 08:08:25,426 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_06667406-82e6-4335-8ee3-5aa124df73bd/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 [2019-11-20 08:08:25,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 08:08:25,462 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-20 08:08:25,463 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 08:08:25,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 08:08:25,497 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191805438] [2019-11-20 08:08:25,497 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-20 08:08:25,497 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836895402] [2019-11-20 08:08:25,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 08:08:25,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-20 08:08:25,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977600692] [2019-11-20 08:08:25,498 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 08:08:25,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 08:08:25,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 08:08:25,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-20 08:08:25,499 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand 5 states. [2019-11-20 08:08:25,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 08:08:25,645 INFO L93 Difference]: Finished difference Result 88 states and 98 transitions. [2019-11-20 08:08:25,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 08:08:25,646 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-11-20 08:08:25,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 08:08:25,647 INFO L225 Difference]: With dead ends: 88 [2019-11-20 08:08:25,648 INFO L226 Difference]: Without dead ends: 82 [2019-11-20 08:08:25,648 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-20 08:08:25,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2019-11-20 08:08:25,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 65. [2019-11-20 08:08:25,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2019-11-20 08:08:25,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2019-11-20 08:08:25,663 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 9 [2019-11-20 08:08:25,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 08:08:25,663 INFO L462 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2019-11-20 08:08:25,664 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 08:08:25,664 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2019-11-20 08:08:25,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-20 08:08:25,664 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:08:25,665 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 08:08:25,876 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 08:08:25,877 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 08:08:25,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:08:25,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1326217983, now seen corresponding path program 1 times [2019-11-20 08:08:25,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 08:08:25,878 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070506686] [2019-11-20 08:08:25,878 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 08:08:25,883 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-20 08:08:25,883 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1999973650] [2019-11-20 08:08:25,884 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_06667406-82e6-4335-8ee3-5aa124df73bd/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 [2019-11-20 08:08:25,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 08:08:25,911 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-20 08:08:25,912 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 08:08:25,929 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 08:08:25,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 08:08:25,947 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070506686] [2019-11-20 08:08:25,947 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-20 08:08:25,947 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999973650] [2019-11-20 08:08:25,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 08:08:25,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-20 08:08:25,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673835777] [2019-11-20 08:08:25,948 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 08:08:25,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 08:08:25,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 08:08:25,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 08:08:25,949 INFO L87 Difference]: Start difference. First operand 65 states and 75 transitions. Second operand 5 states. [2019-11-20 08:08:26,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 08:08:26,065 INFO L93 Difference]: Finished difference Result 65 states and 75 transitions. [2019-11-20 08:08:26,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 08:08:26,066 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-11-20 08:08:26,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 08:08:26,067 INFO L225 Difference]: With dead ends: 65 [2019-11-20 08:08:26,067 INFO L226 Difference]: Without dead ends: 63 [2019-11-20 08:08:26,068 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-20 08:08:26,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-11-20 08:08:26,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2019-11-20 08:08:26,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2019-11-20 08:08:26,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 70 transitions. [2019-11-20 08:08:26,079 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 70 transitions. Word has length 13 [2019-11-20 08:08:26,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 08:08:26,080 INFO L462 AbstractCegarLoop]: Abstraction has 63 states and 70 transitions. [2019-11-20 08:08:26,080 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 08:08:26,080 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 70 transitions. [2019-11-20 08:08:26,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-20 08:08:26,081 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:08:26,081 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 08:08:26,284 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 08:08:26,284 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 08:08:26,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:08:26,285 INFO L82 PathProgramCache]: Analyzing trace with hash 64703206, now seen corresponding path program 1 times [2019-11-20 08:08:26,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 08:08:26,285 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997343279] [2019-11-20 08:08:26,286 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 08:08:26,298 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-20 08:08:26,303 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [165901532] [2019-11-20 08:08:26,305 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_06667406-82e6-4335-8ee3-5aa124df73bd/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 [2019-11-20 08:08:26,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 08:08:26,348 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-20 08:08:26,350 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 08:08:26,387 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 08:08:26,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 08:08:26,403 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997343279] [2019-11-20 08:08:26,403 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-20 08:08:26,404 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165901532] [2019-11-20 08:08:26,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-20 08:08:26,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-11-20 08:08:26,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672873679] [2019-11-20 08:08:26,405 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 08:08:26,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 08:08:26,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 08:08:26,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-20 08:08:26,405 INFO L87 Difference]: Start difference. First operand 63 states and 70 transitions. Second operand 6 states. [2019-11-20 08:08:26,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 08:08:26,658 INFO L93 Difference]: Finished difference Result 116 states and 126 transitions. [2019-11-20 08:08:26,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 08:08:26,659 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2019-11-20 08:08:26,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 08:08:26,661 INFO L225 Difference]: With dead ends: 116 [2019-11-20 08:08:26,661 INFO L226 Difference]: Without dead ends: 110 [2019-11-20 08:08:26,662 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-11-20 08:08:26,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2019-11-20 08:08:26,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 81. [2019-11-20 08:08:26,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2019-11-20 08:08:26,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 91 transitions. [2019-11-20 08:08:26,693 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 91 transitions. Word has length 18 [2019-11-20 08:08:26,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 08:08:26,695 INFO L462 AbstractCegarLoop]: Abstraction has 81 states and 91 transitions. [2019-11-20 08:08:26,695 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 08:08:26,696 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 91 transitions. [2019-11-20 08:08:26,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-20 08:08:26,697 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:08:26,697 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 08:08:26,900 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 08:08:26,900 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 08:08:26,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:08:26,901 INFO L82 PathProgramCache]: Analyzing trace with hash 353712754, now seen corresponding path program 1 times [2019-11-20 08:08:26,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 08:08:26,901 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229540026] [2019-11-20 08:08:26,901 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 08:08:26,912 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-20 08:08:26,913 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2067940747] [2019-11-20 08:08:26,913 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_06667406-82e6-4335-8ee3-5aa124df73bd/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 [2019-11-20 08:08:26,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 08:08:26,946 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-20 08:08:26,947 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 08:08:27,025 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 08:08:27,026 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229540026] [2019-11-20 08:08:27,026 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-20 08:08:27,026 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067940747] [2019-11-20 08:08:27,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-20 08:08:27,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-11-20 08:08:27,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922283464] [2019-11-20 08:08:27,027 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 08:08:27,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 08:08:27,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 08:08:27,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-20 08:08:27,028 INFO L87 Difference]: Start difference. First operand 81 states and 91 transitions. Second operand 6 states. [2019-11-20 08:08:27,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 08:08:27,234 INFO L93 Difference]: Finished difference Result 133 states and 146 transitions. [2019-11-20 08:08:27,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 08:08:27,235 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2019-11-20 08:08:27,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 08:08:27,236 INFO L225 Difference]: With dead ends: 133 [2019-11-20 08:08:27,236 INFO L226 Difference]: Without dead ends: 125 [2019-11-20 08:08:27,237 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-11-20 08:08:27,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2019-11-20 08:08:27,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 94. [2019-11-20 08:08:27,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2019-11-20 08:08:27,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 105 transitions. [2019-11-20 08:08:27,264 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 105 transitions. Word has length 19 [2019-11-20 08:08:27,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 08:08:27,265 INFO L462 AbstractCegarLoop]: Abstraction has 94 states and 105 transitions. [2019-11-20 08:08:27,265 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 08:08:27,265 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 105 transitions. [2019-11-20 08:08:27,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-20 08:08:27,266 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:08:27,266 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 08:08:27,466 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 08:08:27,467 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 08:08:27,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:08:27,467 INFO L82 PathProgramCache]: Analyzing trace with hash -890359109, now seen corresponding path program 2 times [2019-11-20 08:08:27,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 08:08:27,468 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383464791] [2019-11-20 08:08:27,468 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 08:08:27,473 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-20 08:08:27,475 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1271281445] [2019-11-20 08:08:27,476 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_06667406-82e6-4335-8ee3-5aa124df73bd/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 [2019-11-20 08:08:27,516 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 08:08:27,516 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 08:08:27,517 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-20 08:08:27,519 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 08:08:27,585 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 08:08:27,597 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 08:08:27,597 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383464791] [2019-11-20 08:08:27,597 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-20 08:08:27,598 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271281445] [2019-11-20 08:08:27,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-20 08:08:27,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-11-20 08:08:27,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412161068] [2019-11-20 08:08:27,599 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 08:08:27,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 08:08:27,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 08:08:27,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-20 08:08:27,600 INFO L87 Difference]: Start difference. First operand 94 states and 105 transitions. Second operand 7 states. [2019-11-20 08:08:27,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 08:08:27,891 INFO L93 Difference]: Finished difference Result 161 states and 174 transitions. [2019-11-20 08:08:27,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-20 08:08:27,894 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2019-11-20 08:08:27,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 08:08:27,897 INFO L225 Difference]: With dead ends: 161 [2019-11-20 08:08:27,897 INFO L226 Difference]: Without dead ends: 155 [2019-11-20 08:08:27,897 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2019-11-20 08:08:27,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2019-11-20 08:08:27,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 112. [2019-11-20 08:08:27,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2019-11-20 08:08:27,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 126 transitions. [2019-11-20 08:08:27,923 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 126 transitions. Word has length 27 [2019-11-20 08:08:27,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 08:08:27,923 INFO L462 AbstractCegarLoop]: Abstraction has 112 states and 126 transitions. [2019-11-20 08:08:27,927 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 08:08:27,927 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 126 transitions. [2019-11-20 08:08:27,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-20 08:08:27,928 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:08:27,928 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 08:08:28,132 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 08:08:28,132 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 08:08:28,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:08:28,133 INFO L82 PathProgramCache]: Analyzing trace with hash 811552061, now seen corresponding path program 1 times [2019-11-20 08:08:28,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 08:08:28,133 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338512601] [2019-11-20 08:08:28,134 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 08:08:28,154 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-20 08:08:28,157 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1925991863] [2019-11-20 08:08:28,157 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_06667406-82e6-4335-8ee3-5aa124df73bd/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 [2019-11-20 08:08:28,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 08:08:28,191 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-20 08:08:28,193 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 08:08:28,271 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 08:08:28,272 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338512601] [2019-11-20 08:08:28,272 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-20 08:08:28,272 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925991863] [2019-11-20 08:08:28,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-20 08:08:28,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-11-20 08:08:28,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65681510] [2019-11-20 08:08:28,273 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 08:08:28,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 08:08:28,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 08:08:28,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-20 08:08:28,274 INFO L87 Difference]: Start difference. First operand 112 states and 126 transitions. Second operand 7 states. [2019-11-20 08:08:28,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 08:08:28,579 INFO L93 Difference]: Finished difference Result 201 states and 225 transitions. [2019-11-20 08:08:28,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-20 08:08:28,579 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2019-11-20 08:08:28,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 08:08:28,581 INFO L225 Difference]: With dead ends: 201 [2019-11-20 08:08:28,581 INFO L226 Difference]: Without dead ends: 193 [2019-11-20 08:08:28,582 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-11-20 08:08:28,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2019-11-20 08:08:28,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 121. [2019-11-20 08:08:28,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2019-11-20 08:08:28,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 136 transitions. [2019-11-20 08:08:28,606 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 136 transitions. Word has length 28 [2019-11-20 08:08:28,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 08:08:28,607 INFO L462 AbstractCegarLoop]: Abstraction has 121 states and 136 transitions. [2019-11-20 08:08:28,608 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 08:08:28,608 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 136 transitions. [2019-11-20 08:08:28,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-20 08:08:28,611 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:08:28,611 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2019-11-20 08:08:28,814 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 08:08:28,815 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 08:08:28,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:08:28,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1852720049, now seen corresponding path program 2 times [2019-11-20 08:08:28,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 08:08:28,816 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499532867] [2019-11-20 08:08:28,816 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 08:08:28,821 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-20 08:08:28,821 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1531176812] [2019-11-20 08:08:28,822 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_06667406-82e6-4335-8ee3-5aa124df73bd/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 [2019-11-20 08:08:28,863 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 08:08:28,864 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 08:08:28,864 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 08:08:28,866 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 08:08:28,895 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 08:08:28,896 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499532867] [2019-11-20 08:08:28,896 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-20 08:08:28,896 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531176812] [2019-11-20 08:08:28,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 08:08:28,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-20 08:08:28,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068137852] [2019-11-20 08:08:28,897 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 08:08:28,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 08:08:28,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 08:08:28,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-20 08:08:28,897 INFO L87 Difference]: Start difference. First operand 121 states and 136 transitions. Second operand 5 states. [2019-11-20 08:08:28,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 08:08:28,970 INFO L93 Difference]: Finished difference Result 234 states and 261 transitions. [2019-11-20 08:08:28,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 08:08:28,970 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2019-11-20 08:08:28,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 08:08:28,972 INFO L225 Difference]: With dead ends: 234 [2019-11-20 08:08:28,972 INFO L226 Difference]: Without dead ends: 135 [2019-11-20 08:08:28,973 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-20 08:08:28,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2019-11-20 08:08:28,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 127. [2019-11-20 08:08:28,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2019-11-20 08:08:28,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 142 transitions. [2019-11-20 08:08:28,987 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 142 transitions. Word has length 32 [2019-11-20 08:08:28,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 08:08:28,987 INFO L462 AbstractCegarLoop]: Abstraction has 127 states and 142 transitions. [2019-11-20 08:08:28,987 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 08:08:28,988 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 142 transitions. [2019-11-20 08:08:28,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-11-20 08:08:28,989 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:08:28,989 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 08:08:29,200 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 08:08:29,201 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 08:08:29,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:08:29,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1581927046, now seen corresponding path program 3 times [2019-11-20 08:08:29,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 08:08:29,201 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795852383] [2019-11-20 08:08:29,202 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 08:08:29,206 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-20 08:08:29,210 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [499645109] [2019-11-20 08:08:29,210 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_06667406-82e6-4335-8ee3-5aa124df73bd/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 [2019-11-20 08:08:29,243 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-20 08:08:29,243 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 08:08:29,244 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 26 conjunts are in the unsatisfiable core [2019-11-20 08:08:29,245 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 08:08:29,313 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 08:08:31,377 WARN L191 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 14 [2019-11-20 08:08:33,479 WARN L191 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 20 [2019-11-20 08:08:33,480 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 08:08:33,521 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-20 08:08:33,521 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795852383] [2019-11-20 08:08:33,522 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-20 08:08:33,522 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499645109] [2019-11-20 08:08:33,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-20 08:08:33,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-11-20 08:08:33,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013385872] [2019-11-20 08:08:33,522 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-20 08:08:33,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 08:08:33,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-20 08:08:33,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-11-20 08:08:33,523 INFO L87 Difference]: Start difference. First operand 127 states and 142 transitions. Second operand 8 states. [2019-11-20 08:08:41,727 WARN L191 SmtUtils]: Spent 8.18 s on a formula simplification. DAG size of input: 31 DAG size of output: 23 [2019-11-20 08:08:45,918 WARN L191 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 21 DAG size of output: 16 [2019-11-20 08:08:48,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 08:08:48,121 INFO L93 Difference]: Finished difference Result 149 states and 160 transitions. [2019-11-20 08:08:48,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-20 08:08:48,122 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2019-11-20 08:08:48,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 08:08:48,123 INFO L225 Difference]: With dead ends: 149 [2019-11-20 08:08:48,123 INFO L226 Difference]: Without dead ends: 143 [2019-11-20 08:08:48,124 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 16.5s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2019-11-20 08:08:48,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2019-11-20 08:08:48,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 80. [2019-11-20 08:08:48,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2019-11-20 08:08:48,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 87 transitions. [2019-11-20 08:08:48,135 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 87 transitions. Word has length 36 [2019-11-20 08:08:48,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 08:08:48,135 INFO L462 AbstractCegarLoop]: Abstraction has 80 states and 87 transitions. [2019-11-20 08:08:48,135 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-20 08:08:48,136 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 87 transitions. [2019-11-20 08:08:48,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-20 08:08:48,137 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:08:48,137 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 08:08:48,339 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 08:08:48,340 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 08:08:48,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:08:48,340 INFO L82 PathProgramCache]: Analyzing trace with hash 143011538, now seen corresponding path program 2 times [2019-11-20 08:08:48,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 08:08:48,341 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243114750] [2019-11-20 08:08:48,341 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 08:08:48,348 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-20 08:08:48,350 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1054091402] [2019-11-20 08:08:48,350 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_06667406-82e6-4335-8ee3-5aa124df73bd/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 [2019-11-20 08:08:48,389 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 08:08:48,389 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 08:08:48,390 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 27 conjunts are in the unsatisfiable core [2019-11-20 08:08:48,392 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 08:08:48,473 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 08:08:48,473 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243114750] [2019-11-20 08:08:48,473 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-20 08:08:48,473 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054091402] [2019-11-20 08:08:48,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-20 08:08:48,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-11-20 08:08:48,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998682306] [2019-11-20 08:08:48,474 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-20 08:08:48,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 08:08:48,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-20 08:08:48,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-20 08:08:48,475 INFO L87 Difference]: Start difference. First operand 80 states and 87 transitions. Second operand 8 states. [2019-11-20 08:08:48,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 08:08:48,812 INFO L93 Difference]: Finished difference Result 134 states and 146 transitions. [2019-11-20 08:08:48,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-20 08:08:48,813 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 37 [2019-11-20 08:08:48,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 08:08:48,814 INFO L225 Difference]: With dead ends: 134 [2019-11-20 08:08:48,814 INFO L226 Difference]: Without dead ends: 126 [2019-11-20 08:08:48,814 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2019-11-20 08:08:48,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2019-11-20 08:08:48,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 89. [2019-11-20 08:08:48,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2019-11-20 08:08:48,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 97 transitions. [2019-11-20 08:08:48,830 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 97 transitions. Word has length 37 [2019-11-20 08:08:48,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 08:08:48,832 INFO L462 AbstractCegarLoop]: Abstraction has 89 states and 97 transitions. [2019-11-20 08:08:48,832 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-20 08:08:48,832 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 97 transitions. [2019-11-20 08:08:48,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-11-20 08:08:48,835 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:08:48,836 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-11-20 08:08:49,040 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 08:08:49,040 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 08:08:49,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:08:49,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1368640356, now seen corresponding path program 3 times [2019-11-20 08:08:49,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 08:08:49,041 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447921991] [2019-11-20 08:08:49,041 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 08:08:49,045 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-20 08:08:49,045 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1653252808] [2019-11-20 08:08:49,046 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_06667406-82e6-4335-8ee3-5aa124df73bd/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 [2019-11-20 08:08:49,097 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-11-20 08:08:49,097 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 08:08:49,098 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2019-11-20 08:08:49,099 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 08:08:49,129 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 08:08:49,175 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-20 08:08:49,175 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447921991] [2019-11-20 08:08:49,176 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-20 08:08:49,176 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653252808] [2019-11-20 08:08:49,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-20 08:08:49,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-11-20 08:08:49,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810024717] [2019-11-20 08:08:49,177 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 08:08:49,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 08:08:49,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 08:08:49,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-20 08:08:49,178 INFO L87 Difference]: Start difference. First operand 89 states and 97 transitions. Second operand 7 states. [2019-11-20 08:08:49,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 08:08:49,327 INFO L93 Difference]: Finished difference Result 99 states and 106 transitions. [2019-11-20 08:08:49,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 08:08:49,328 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2019-11-20 08:08:49,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 08:08:49,329 INFO L225 Difference]: With dead ends: 99 [2019-11-20 08:08:49,329 INFO L226 Difference]: Without dead ends: 83 [2019-11-20 08:08:49,329 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2019-11-20 08:08:49,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2019-11-20 08:08:49,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 60. [2019-11-20 08:08:49,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2019-11-20 08:08:49,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2019-11-20 08:08:49,339 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 41 [2019-11-20 08:08:49,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 08:08:49,340 INFO L462 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2019-11-20 08:08:49,340 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 08:08:49,340 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2019-11-20 08:08:49,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-11-20 08:08:49,340 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:08:49,341 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 08:08:49,552 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 08:08:49,552 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 08:08:49,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:08:49,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1236581155, now seen corresponding path program 4 times [2019-11-20 08:08:49,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 08:08:49,553 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631331120] [2019-11-20 08:08:49,553 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 08:08:49,559 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-20 08:08:49,559 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [967055086] [2019-11-20 08:08:49,559 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_06667406-82e6-4335-8ee3-5aa124df73bd/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 [2019-11-20 08:08:49,604 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-20 08:08:49,604 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 08:08:49,605 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 38 conjunts are in the unsatisfiable core [2019-11-20 08:08:49,607 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 08:08:49,636 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 08:08:49,670 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 08:08:49,851 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 08:08:49,883 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 3 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 08:08:49,883 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631331120] [2019-11-20 08:08:49,883 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-20 08:08:49,884 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967055086] [2019-11-20 08:08:49,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-20 08:08:49,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2019-11-20 08:08:49,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309752540] [2019-11-20 08:08:49,885 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-20 08:08:49,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 08:08:49,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-20 08:08:49,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2019-11-20 08:08:49,886 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand 14 states. [2019-11-20 08:08:51,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 08:08:51,082 INFO L93 Difference]: Finished difference Result 152 states and 163 transitions. [2019-11-20 08:08:51,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-20 08:08:51,083 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 46 [2019-11-20 08:08:51,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 08:08:51,084 INFO L225 Difference]: With dead ends: 152 [2019-11-20 08:08:51,084 INFO L226 Difference]: Without dead ends: 128 [2019-11-20 08:08:51,084 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=139, Invalid=511, Unknown=0, NotChecked=0, Total=650 [2019-11-20 08:08:51,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2019-11-20 08:08:51,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 88. [2019-11-20 08:08:51,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2019-11-20 08:08:51,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 93 transitions. [2019-11-20 08:08:51,100 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 93 transitions. Word has length 46 [2019-11-20 08:08:51,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 08:08:51,101 INFO L462 AbstractCegarLoop]: Abstraction has 88 states and 93 transitions. [2019-11-20 08:08:51,101 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-20 08:08:51,101 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 93 transitions. [2019-11-20 08:08:51,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-11-20 08:08:51,105 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:08:51,105 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 08:08:51,309 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 08:08:51,309 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 08:08:51,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:08:51,309 INFO L82 PathProgramCache]: Analyzing trace with hash -2063152334, now seen corresponding path program 5 times [2019-11-20 08:08:51,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 08:08:51,310 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966751244] [2019-11-20 08:08:51,310 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 08:08:51,313 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-20 08:08:51,313 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [209786884] [2019-11-20 08:08:51,313 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_06667406-82e6-4335-8ee3-5aa124df73bd/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 [2019-11-20 08:08:51,378 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-11-20 08:08:51,378 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 08:08:51,380 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 37 conjunts are in the unsatisfiable core [2019-11-20 08:08:51,382 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 08:08:51,601 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 08:08:51,604 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966751244] [2019-11-20 08:08:51,604 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-20 08:08:51,608 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209786884] [2019-11-20 08:08:51,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-20 08:08:51,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2019-11-20 08:08:51,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660711169] [2019-11-20 08:08:51,610 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-20 08:08:51,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 08:08:51,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-20 08:08:51,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2019-11-20 08:08:51,611 INFO L87 Difference]: Start difference. First operand 88 states and 93 transitions. Second operand 12 states. [2019-11-20 08:08:52,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 08:08:52,260 INFO L93 Difference]: Finished difference Result 209 states and 223 transitions. [2019-11-20 08:08:52,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-20 08:08:52,261 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 55 [2019-11-20 08:08:52,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 08:08:52,262 INFO L225 Difference]: With dead ends: 209 [2019-11-20 08:08:52,263 INFO L226 Difference]: Without dead ends: 207 [2019-11-20 08:08:52,265 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2019-11-20 08:08:52,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2019-11-20 08:08:52,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 136. [2019-11-20 08:08:52,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2019-11-20 08:08:52,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 145 transitions. [2019-11-20 08:08:52,293 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 145 transitions. Word has length 55 [2019-11-20 08:08:52,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 08:08:52,294 INFO L462 AbstractCegarLoop]: Abstraction has 136 states and 145 transitions. [2019-11-20 08:08:52,294 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-20 08:08:52,294 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 145 transitions. [2019-11-20 08:08:52,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-11-20 08:08:52,295 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:08:52,295 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 08:08:52,499 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 08:08:52,500 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 08:08:52,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:08:52,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1505454979, now seen corresponding path program 6 times [2019-11-20 08:08:52,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 08:08:52,501 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453247855] [2019-11-20 08:08:52,501 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 08:08:52,504 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-20 08:08:52,504 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [152979905] [2019-11-20 08:08:52,504 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_06667406-82e6-4335-8ee3-5aa124df73bd/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 [2019-11-20 08:08:52,556 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2019-11-20 08:08:52,556 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 08:08:52,557 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 22 conjunts are in the unsatisfiable core [2019-11-20 08:08:52,559 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 08:08:52,609 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 08:08:52,619 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 08:08:52,636 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2019-11-20 08:08:52,636 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453247855] [2019-11-20 08:08:52,636 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-20 08:08:52,636 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152979905] [2019-11-20 08:08:52,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-20 08:08:52,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-11-20 08:08:52,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763683052] [2019-11-20 08:08:52,637 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 08:08:52,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 08:08:52,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 08:08:52,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-11-20 08:08:52,638 INFO L87 Difference]: Start difference. First operand 136 states and 145 transitions. Second operand 7 states. [2019-11-20 08:08:52,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 08:08:52,893 INFO L93 Difference]: Finished difference Result 235 states and 250 transitions. [2019-11-20 08:08:52,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-20 08:08:52,894 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2019-11-20 08:08:52,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 08:08:52,896 INFO L225 Difference]: With dead ends: 235 [2019-11-20 08:08:52,896 INFO L226 Difference]: Without dead ends: 233 [2019-11-20 08:08:52,896 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2019-11-20 08:08:52,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2019-11-20 08:08:52,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 136. [2019-11-20 08:08:52,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2019-11-20 08:08:52,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 145 transitions. [2019-11-20 08:08:52,922 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 145 transitions. Word has length 64 [2019-11-20 08:08:52,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 08:08:52,923 INFO L462 AbstractCegarLoop]: Abstraction has 136 states and 145 transitions. [2019-11-20 08:08:52,923 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 08:08:52,923 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 145 transitions. [2019-11-20 08:08:52,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-11-20 08:08:52,924 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:08:52,924 INFO L410 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 5, 5, 5, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1] [2019-11-20 08:08:53,128 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 08:08:53,128 INFO L410 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 08:08:53,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:08:53,129 INFO L82 PathProgramCache]: Analyzing trace with hash -702330076, now seen corresponding path program 7 times [2019-11-20 08:08:53,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 08:08:53,129 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470175030] [2019-11-20 08:08:53,129 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 08:08:53,146 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-20 08:08:53,147 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1159494092] [2019-11-20 08:08:53,147 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_06667406-82e6-4335-8ee3-5aa124df73bd/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 [2019-11-20 08:08:53,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 08:08:53,210 INFO L255 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 08:08:53,213 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 08:08:53,327 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 106 proven. 21 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-11-20 08:08:53,327 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470175030] [2019-11-20 08:08:53,328 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-20 08:08:53,328 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159494092] [2019-11-20 08:08:53,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-20 08:08:53,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-11-20 08:08:53,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792210803] [2019-11-20 08:08:53,329 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 08:08:53,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 08:08:53,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 08:08:53,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-20 08:08:53,330 INFO L87 Difference]: Start difference. First operand 136 states and 145 transitions. Second operand 7 states. [2019-11-20 08:08:53,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 08:08:53,624 INFO L93 Difference]: Finished difference Result 236 states and 250 transitions. [2019-11-20 08:08:53,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-20 08:08:53,624 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 77 [2019-11-20 08:08:53,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 08:08:53,625 INFO L225 Difference]: With dead ends: 236 [2019-11-20 08:08:53,625 INFO L226 Difference]: Without dead ends: 136 [2019-11-20 08:08:53,628 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-11-20 08:08:53,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2019-11-20 08:08:53,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2019-11-20 08:08:53,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2019-11-20 08:08:53,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 142 transitions. [2019-11-20 08:08:53,654 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 142 transitions. Word has length 77 [2019-11-20 08:08:53,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 08:08:53,654 INFO L462 AbstractCegarLoop]: Abstraction has 136 states and 142 transitions. [2019-11-20 08:08:53,654 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 08:08:53,654 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 142 transitions. [2019-11-20 08:08:53,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2019-11-20 08:08:53,655 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:08:53,655 INFO L410 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1] [2019-11-20 08:08:53,858 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 08:08:53,859 INFO L410 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 08:08:53,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:08:53,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1769749039, now seen corresponding path program 8 times [2019-11-20 08:08:53,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 08:08:53,859 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208410798] [2019-11-20 08:08:53,859 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 08:08:53,863 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-20 08:08:53,863 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [143214190] [2019-11-20 08:08:53,863 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_06667406-82e6-4335-8ee3-5aa124df73bd/bin/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 08:08:53,912 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 08:08:53,912 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 08:08:53,913 INFO L255 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-20 08:08:53,915 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 08:08:54,085 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 137 proven. 76 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-11-20 08:08:54,085 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208410798] [2019-11-20 08:08:54,086 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-20 08:08:54,086 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143214190] [2019-11-20 08:08:54,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-20 08:08:54,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2019-11-20 08:08:54,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891517074] [2019-11-20 08:08:54,087 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-20 08:08:54,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 08:08:54,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-20 08:08:54,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2019-11-20 08:08:54,087 INFO L87 Difference]: Start difference. First operand 136 states and 142 transitions. Second operand 9 states. [2019-11-20 08:08:55,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 08:08:55,720 INFO L93 Difference]: Finished difference Result 245 states and 254 transitions. [2019-11-20 08:08:55,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-20 08:08:55,726 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 86 [2019-11-20 08:08:55,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 08:08:55,727 INFO L225 Difference]: With dead ends: 245 [2019-11-20 08:08:55,727 INFO L226 Difference]: Without dead ends: 105 [2019-11-20 08:08:55,731 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2019-11-20 08:08:55,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2019-11-20 08:08:55,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2019-11-20 08:08:55,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2019-11-20 08:08:55,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 107 transitions. [2019-11-20 08:08:55,752 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 107 transitions. Word has length 86 [2019-11-20 08:08:55,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 08:08:55,752 INFO L462 AbstractCegarLoop]: Abstraction has 105 states and 107 transitions. [2019-11-20 08:08:55,752 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-20 08:08:55,753 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 107 transitions. [2019-11-20 08:08:55,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-11-20 08:08:55,753 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:08:55,754 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 8, 8, 8, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1] [2019-11-20 08:08:55,957 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 08:08:55,957 INFO L410 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 08:08:55,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:08:55,957 INFO L82 PathProgramCache]: Analyzing trace with hash 2111138255, now seen corresponding path program 9 times [2019-11-20 08:08:55,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 08:08:55,958 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110650724] [2019-11-20 08:08:55,958 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 08:08:55,964 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-20 08:08:55,965 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2082448334] [2019-11-20 08:08:55,965 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_06667406-82e6-4335-8ee3-5aa124df73bd/bin/uautomizer/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 08:08:55,995 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-11-20 08:08:55,995 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 08:08:55,996 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2019-11-20 08:08:55,997 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 08:08:56,015 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 08:08:56,047 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 08:08:56,084 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 216 proven. 2 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2019-11-20 08:08:56,084 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110650724] [2019-11-20 08:08:56,084 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-20 08:08:56,084 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082448334] [2019-11-20 08:08:56,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-20 08:08:56,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-11-20 08:08:56,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773294570] [2019-11-20 08:08:56,087 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 08:08:56,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 08:08:56,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 08:08:56,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-20 08:08:56,087 INFO L87 Difference]: Start difference. First operand 105 states and 107 transitions. Second operand 7 states. [2019-11-20 08:08:56,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 08:08:56,155 INFO L93 Difference]: Finished difference Result 105 states and 107 transitions. [2019-11-20 08:08:56,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 08:08:56,155 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 104 [2019-11-20 08:08:56,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 08:08:56,155 INFO L225 Difference]: With dead ends: 105 [2019-11-20 08:08:56,156 INFO L226 Difference]: Without dead ends: 0 [2019-11-20 08:08:56,156 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 97 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-11-20 08:08:56,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-20 08:08:56,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-20 08:08:56,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-20 08:08:56,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-20 08:08:56,156 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 104 [2019-11-20 08:08:56,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 08:08:56,156 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 08:08:56,157 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 08:08:56,157 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-20 08:08:56,157 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-20 08:08:56,357 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 08:08:56,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-20 08:08:56,721 WARN L191 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 181 [2019-11-20 08:08:57,128 WARN L191 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 187 [2019-11-20 08:08:57,358 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 178 [2019-11-20 08:08:57,619 WARN L191 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 172 [2019-11-20 08:08:57,924 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 178 [2019-11-20 08:09:05,095 WARN L191 SmtUtils]: Spent 7.17 s on a formula simplification. DAG size of input: 180 DAG size of output: 40 [2019-11-20 08:09:07,738 WARN L191 SmtUtils]: Spent 2.64 s on a formula simplification. DAG size of input: 117 DAG size of output: 36 [2019-11-20 08:09:20,994 WARN L191 SmtUtils]: Spent 13.25 s on a formula simplification. DAG size of input: 181 DAG size of output: 41 [2019-11-20 08:09:28,115 WARN L191 SmtUtils]: Spent 7.12 s on a formula simplification. DAG size of input: 175 DAG size of output: 39 [2019-11-20 08:09:50,842 WARN L191 SmtUtils]: Spent 22.73 s on a formula simplification. DAG size of input: 134 DAG size of output: 56 [2019-11-20 08:10:11,640 WARN L191 SmtUtils]: Spent 20.80 s on a formula simplification. DAG size of input: 169 DAG size of output: 39 [2019-11-20 08:10:19,594 WARN L191 SmtUtils]: Spent 7.95 s on a formula simplification. DAG size of input: 100 DAG size of output: 41 [2019-11-20 08:10:38,340 WARN L191 SmtUtils]: Spent 18.74 s on a formula simplification. DAG size of input: 177 DAG size of output: 38 [2019-11-20 08:10:38,342 INFO L444 ceAbstractionStarter]: For program point L10-9(lines 10 13) no Hoare annotation was computed. [2019-11-20 08:10:38,342 INFO L440 ceAbstractionStarter]: At program point L10-11(lines 9 15) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~x~0 (+ (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~r~0))) (.cse5 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse4 (<= 1 ULTIMATE.start_main_~r~0)) (.cse1 (<= 1 ULTIMATE.start_main_~y~0))) (or (and (and .cse0 .cse1 (or (let ((.cse3 (div (- ULTIMATE.start_main_~a~0) (- 2)))) (let ((.cse2 (* ULTIMATE.start_main_~y~0 .cse3))) (and (= ULTIMATE.start_main_~b~0 (* 2 .cse2)) (= 0 (mod .cse3 (- 2))) (= (mod .cse2 (- 2)) 0) .cse4 (= 0 (mod ULTIMATE.start_main_~a~0 (- 2)))))) (and (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~a~0)) .cse4 (= ULTIMATE.start_main_~a~0 2)))) .cse5) (and (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) .cse0 (= ULTIMATE.start_main_~a~0 1) .cse5 .cse4 .cse1))) [2019-11-20 08:10:38,343 INFO L444 ceAbstractionStarter]: For program point L10-12(lines 10 13) no Hoare annotation was computed. [2019-11-20 08:10:38,343 INFO L440 ceAbstractionStarter]: At program point L10-14(lines 44 45) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~x~0 (+ (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~r~0))) (.cse3 (<= 1 ULTIMATE.start_main_~y~0)) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (<= 1 ULTIMATE.start_main_~r~0))) (or (and (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) .cse0 (= ULTIMATE.start_main_~a~0 1) .cse1 .cse2 .cse3) (and .cse0 .cse3 (or (and (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~a~0)) .cse1 .cse2 (= ULTIMATE.start_main_~a~0 2)) (let ((.cse5 (div (- ULTIMATE.start_main_~a~0) (- 2)))) (let ((.cse4 (* ULTIMATE.start_main_~y~0 .cse5))) (and (= ULTIMATE.start_main_~b~0 (* 2 .cse4)) (= 0 (mod .cse5 (- 2))) .cse1 (= (mod .cse4 (- 2)) 0) .cse2 (= 0 (mod ULTIMATE.start_main_~a~0 (- 2)))))))))) [2019-11-20 08:10:38,343 INFO L444 ceAbstractionStarter]: For program point L10-15(lines 10 13) no Hoare annotation was computed. [2019-11-20 08:10:38,343 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2019-11-20 08:10:38,343 INFO L440 ceAbstractionStarter]: At program point L10-17(lines 9 15) the Hoare annotation is: (and (= ULTIMATE.start_main_~x~0 (+ (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~r~0)) (let ((.cse0 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~a~0))) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (<= 1 ULTIMATE.start_main_~r~0))) (or (let ((.cse1 (div (- ULTIMATE.start_main_~a~0) (- 2)))) (and .cse0 (= 0 (mod .cse1 (- 2))) (= 0 (mod ULTIMATE.start_main_~b~0 (- 2))) .cse2 .cse3 (= (mod (* ULTIMATE.start_main_~y~0 .cse1) (- 2)) 0) (= 0 (mod ULTIMATE.start_main_~a~0 (- 2))))) (and (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~a~0 1) .cse2 .cse3) (and .cse0 .cse2 .cse3 (= ULTIMATE.start_main_~a~0 2)))) (<= 1 ULTIMATE.start_main_~y~0)) [2019-11-20 08:10:38,343 INFO L444 ceAbstractionStarter]: For program point L10-18(lines 10 13) no Hoare annotation was computed. [2019-11-20 08:10:38,343 INFO L447 ceAbstractionStarter]: At program point L10-20(lines 9 15) the Hoare annotation is: true [2019-11-20 08:10:38,343 INFO L444 ceAbstractionStarter]: For program point L11(lines 11 12) no Hoare annotation was computed. [2019-11-20 08:10:38,343 INFO L444 ceAbstractionStarter]: For program point L11-1(lines 11 12) no Hoare annotation was computed. [2019-11-20 08:10:38,343 INFO L444 ceAbstractionStarter]: For program point L11-2(lines 11 12) no Hoare annotation was computed. [2019-11-20 08:10:38,343 INFO L444 ceAbstractionStarter]: For program point L11-3(lines 11 12) no Hoare annotation was computed. [2019-11-20 08:10:38,344 INFO L444 ceAbstractionStarter]: For program point L11-4(lines 11 12) no Hoare annotation was computed. [2019-11-20 08:10:38,344 INFO L444 ceAbstractionStarter]: For program point L11-5(lines 11 12) no Hoare annotation was computed. [2019-11-20 08:10:38,344 INFO L444 ceAbstractionStarter]: For program point L11-6(lines 11 12) no Hoare annotation was computed. [2019-11-20 08:10:38,344 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2019-11-20 08:10:38,344 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-20 08:10:38,344 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-20 08:10:38,344 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2019-11-20 08:10:38,344 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2019-11-20 08:10:38,344 INFO L440 ceAbstractionStarter]: At program point L30-2(lines 30 54) the Hoare annotation is: (let ((.cse6 (= 1 ULTIMATE.start___VERIFIER_assert_~cond))) (let ((.cse0 (= ULTIMATE.start_main_~x~0 (+ (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~r~0))) (.cse2 (or (and (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~a~0 1) .cse6) (and (= ULTIMATE.start_main_~b~0 (* 2 ULTIMATE.start_main_~y~0)) .cse6 (= ULTIMATE.start_main_~a~0 2)) (and (= ULTIMATE.start_main_~b~0 (* 4 ULTIMATE.start_main_~y~0)) (= ULTIMATE.start_main_~a~0 4) .cse6))) (.cse1 (<= 1 ULTIMATE.start_main_~y~0))) (or (and (= ULTIMATE.start_main_~b~0 0) (= ULTIMATE.start_main_~a~0 0) .cse0 (= ULTIMATE.start_main_~q~0 0) .cse1) (and .cse2 .cse0 (<= (+ ULTIMATE.start_main_~r~0 1) ULTIMATE.start_main_~y~0) .cse1) (let ((.cse7 (- ULTIMATE.start_main_~a~0))) (and (let ((.cse3 (= 0 (mod ULTIMATE.start_main_~a~0 (- 2))))) (or (and .cse2 .cse1 .cse3) (let ((.cse5 (div .cse7 (- 2)))) (let ((.cse4 (* ULTIMATE.start_main_~y~0 .cse5))) (and (= ULTIMATE.start_main_~b~0 (* 2 .cse4)) (= 0 (mod .cse5 (- 2))) .cse6 (= (mod .cse4 (- 2)) 0) .cse1 .cse3))))) (= ULTIMATE.start_main_~x~0 (+ (* (+ ULTIMATE.start_main_~q~0 .cse7) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~b~0))))))) [2019-11-20 08:10:38,344 INFO L444 ceAbstractionStarter]: For program point L30-3(lines 30 54) no Hoare annotation was computed. [2019-11-20 08:10:38,344 INFO L440 ceAbstractionStarter]: At program point L39-2(lines 39 51) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~x~0 (+ (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~r~0))) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (<= 1 ULTIMATE.start_main_~r~0)) (.cse4 (<= 1 ULTIMATE.start_main_~y~0))) (or (and .cse0 (or (and (= ULTIMATE.start_main_~b~0 (* 2 ULTIMATE.start_main_~y~0)) .cse1 .cse2 (= ULTIMATE.start_main_~a~0 2)) (let ((.cse3 (div (- ULTIMATE.start_main_~a~0) (- 2)))) (and (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~a~0)) (= 0 (mod .cse3 (- 2))) (= 0 (mod ULTIMATE.start_main_~b~0 (- 2))) .cse1 (= (mod (* ULTIMATE.start_main_~y~0 .cse3) (- 2)) 0) .cse2 (= 0 (mod ULTIMATE.start_main_~a~0 (- 2)))))) .cse4) (and (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) .cse0 (= ULTIMATE.start_main_~a~0 1) .cse1 .cse2 .cse4))) [2019-11-20 08:10:38,345 INFO L444 ceAbstractionStarter]: For program point L39-3(lines 39 51) no Hoare annotation was computed. [2019-11-20 08:10:38,345 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2019-11-20 08:10:38,345 INFO L447 ceAbstractionStarter]: At program point L57(lines 17 58) the Hoare annotation is: true [2019-11-20 08:10:38,345 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2019-11-20 08:10:38,345 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-20 08:10:38,345 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2019-11-20 08:10:38,345 INFO L444 ceAbstractionStarter]: For program point L10(lines 10 13) no Hoare annotation was computed. [2019-11-20 08:10:38,345 INFO L440 ceAbstractionStarter]: At program point L10-2(lines 9 15) the Hoare annotation is: (let ((.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse0 (<= (+ ULTIMATE.start_main_~r~0 1) ULTIMATE.start_main_~y~0)) (.cse2 (<= 1 ULTIMATE.start_main_~y~0))) (or (and (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~x~0 (+ (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~r~0)) .cse0 (= ULTIMATE.start_main_~a~0 1) .cse1 .cse2) (and (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~a~0)) (= 0 (mod ULTIMATE.start_main_~b~0 (- 2))) .cse1 .cse2 (= 0 (mod ULTIMATE.start_main_~a~0 (- 2))) (= ULTIMATE.start_main_~x~0 (+ (* (+ ULTIMATE.start_main_~q~0 (- ULTIMATE.start_main_~a~0)) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~b~0))) (and .cse0 (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) (and (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* 2 ULTIMATE.start_main_~y~0))) .cse2 (= ULTIMATE.start_main_~q~0 2))))) [2019-11-20 08:10:38,345 INFO L444 ceAbstractionStarter]: For program point L10-3(lines 10 13) no Hoare annotation was computed. [2019-11-20 08:10:38,346 INFO L440 ceAbstractionStarter]: At program point L10-5(lines 34 35) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~x~0 (+ (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~r~0))) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (<= 1 ULTIMATE.start_main_~y~0)) (.cse1 (<= (+ ULTIMATE.start_main_~r~0 1) ULTIMATE.start_main_~y~0))) (or (and (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) .cse0 .cse1 (= ULTIMATE.start_main_~a~0 1) .cse2 .cse3) (and .cse2 (and .cse0 (and (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~a~0)) .cse3 (= 0 (mod ULTIMATE.start_main_~a~0 (- 2)))))) (and (and (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* 2 ULTIMATE.start_main_~y~0))) .cse2 .cse3 (= ULTIMATE.start_main_~q~0 2)) .cse1 (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)))) [2019-11-20 08:10:38,346 INFO L444 ceAbstractionStarter]: For program point L10-6(lines 10 13) no Hoare annotation was computed. [2019-11-20 08:10:38,346 INFO L440 ceAbstractionStarter]: At program point L10-8(lines 9 15) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~x~0 (+ (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~r~0))) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (<= 1 ULTIMATE.start_main_~r~0)) (.cse3 (<= 1 ULTIMATE.start_main_~y~0))) (or (and (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) .cse0 (= ULTIMATE.start_main_~a~0 1) .cse1 .cse2 .cse3) (and .cse0 (let ((.cse4 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~a~0)))) (or (and .cse4 .cse1 .cse2 (= ULTIMATE.start_main_~a~0 2)) (let ((.cse5 (div (- ULTIMATE.start_main_~a~0) (- 2)))) (and .cse4 (= 0 (mod .cse5 (- 2))) (= 0 (mod ULTIMATE.start_main_~b~0 (- 2))) .cse1 (= (mod (* ULTIMATE.start_main_~y~0 .cse5) (- 2)) 0) .cse2 (= 0 (mod ULTIMATE.start_main_~a~0 (- 2))))))) .cse3))) [2019-11-20 08:10:38,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 08:10:38 BoogieIcfgContainer [2019-11-20 08:10:38,371 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 08:10:38,371 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 08:10:38,371 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 08:10:38,372 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 08:10:38,372 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:08:24" (3/4) ... [2019-11-20 08:10:38,375 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-20 08:10:38,387 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2019-11-20 08:10:38,387 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-20 08:10:38,434 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_06667406-82e6-4335-8ee3-5aa124df73bd/bin/uautomizer/witness.graphml [2019-11-20 08:10:38,434 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 08:10:38,435 INFO L168 Benchmark]: Toolchain (without parser) took 134996.97 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 345.5 MB). Free memory was 951.5 MB in the beginning and 1.2 GB in the end (delta: -229.3 MB). Peak memory consumption was 116.2 MB. Max. memory is 11.5 GB. [2019-11-20 08:10:38,436 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 08:10:38,436 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.77 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.0 MB). Free memory was 951.5 MB in the beginning and 1.1 GB in the end (delta: -157.1 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-11-20 08:10:38,436 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.85 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. [2019-11-20 08:10:38,437 INFO L168 Benchmark]: Boogie Preprocessor took 22.25 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. [2019-11-20 08:10:38,437 INFO L168 Benchmark]: RCFGBuilder took 361.35 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: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 11.5 GB. [2019-11-20 08:10:38,437 INFO L168 Benchmark]: TraceAbstraction took 134219.42 ms. Allocated memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: 227.5 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -99.9 MB). Peak memory consumption was 528.5 MB. Max. memory is 11.5 GB. [2019-11-20 08:10:38,438 INFO L168 Benchmark]: Witness Printer took 62.87 ms. Allocated memory is still 1.4 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 11.5 GB. [2019-11-20 08:10:38,440 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 292.77 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.0 MB). Free memory was 951.5 MB in the beginning and 1.1 GB in the end (delta: -157.1 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 33.85 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 22.25 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 361.35 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: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 134219.42 ms. Allocated memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: 227.5 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -99.9 MB). Peak memory consumption was 528.5 MB. Max. memory is 11.5 GB. * Witness Printer took 62.87 ms. Allocated memory is still 1.4 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: (((x == q * y + r && 1 <= y) && (((((b == 2 * (y * (-a / -2)) && 0 == -a / -2 % -2) && y * (-a / -2) % -2 == 0) && 1 <= r) && 0 == a % -2) || ((b == y * a && 1 <= r) && a == 2))) && 1 == cond) || (((((b == y && x == q * y + r) && a == 1) && 1 == cond) && 1 <= r) && 1 <= y) - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((((((b == y && x == q * y + r) && r + 1 <= y) && a == 1) && 1 == cond) && 1 <= y) || (1 == cond && x == q * y + r && (b == y * a && 1 <= y) && 0 == a % -2)) || (((((x == r + 2 * y && 1 == cond) && 1 <= y) && q == 2) && r + 1 <= y) && b <= y) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((x == q * y + r && ((((b == 2 * y && 1 == cond) && 1 <= r) && a == 2) || ((((((b == y * a && 0 == -a / -2 % -2) && 0 == b % -2) && 1 == cond) && y * (-a / -2) % -2 == 0) && 1 <= r) && 0 == a % -2))) && 1 <= y) || (((((b == y && x == q * y + r) && a == 1) && 1 == cond) && 1 <= r) && 1 <= y) - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: (((((b == y && x == q * y + r) && a == 1) && 1 == cond) && 1 <= r) && 1 <= y) || ((x == q * y + r && 1 <= y) && ((((b == y * a && 1 == cond) && 1 <= r) && a == 2) || (((((b == 2 * (y * (-a / -2)) && 0 == -a / -2 % -2) && 1 == cond) && y * (-a / -2) % -2 == 0) && 1 <= r) && 0 == a % -2))) - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: (((((b == 0 && a == 0) && x == q * y + r) && q == 0) && 1 <= y) || (((((((b == y && a == 1) && 1 == cond) || ((b == 2 * y && 1 == cond) && a == 2)) || ((b == 4 * y && a == 4) && 1 == cond)) && x == q * y + r) && r + 1 <= y) && 1 <= y)) || ((((((((b == y && a == 1) && 1 == cond) || ((b == 2 * y && 1 == cond) && a == 2)) || ((b == 4 * y && a == 4) && 1 == cond)) && 1 <= y) && 0 == a % -2) || (((((b == 2 * (y * (-a / -2)) && 0 == -a / -2 % -2) && 1 == cond) && y * (-a / -2) % -2 == 0) && 1 <= y) && 0 == a % -2)) && x == (q + -a) * y + r + b) - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: (((((b == y && x == q * y + r) && a == 1) && 1 == cond) && 1 <= r) && 1 <= y) || ((x == q * y + r && ((((b == y * a && 1 == cond) && 1 <= r) && a == 2) || ((((((b == y * a && 0 == -a / -2 % -2) && 0 == b % -2) && 1 == cond) && y * (-a / -2) % -2 == 0) && 1 <= r) && 0 == a % -2))) && 1 <= y) - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: ((((((b == y && x == q * y + r) && r + 1 <= y) && a == 1) && 1 == cond) && 1 <= y) || (((((b == y * a && 0 == b % -2) && 1 == cond) && 1 <= y) && 0 == a % -2) && x == (q + -a) * y + r + b)) || ((r + 1 <= y && b <= y) && (x == r + 2 * y && 1 <= y) && q == 2) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: (x == q * y + r && ((((((((b == y * a && 0 == -a / -2 % -2) && 0 == b % -2) && 1 == cond) && 1 <= r) && y * (-a / -2) % -2 == 0) && 0 == a % -2) || (((b == y && a == 1) && 1 == cond) && 1 <= r)) || (((b == y * a && 1 == cond) && 1 <= r) && a == 2))) && 1 <= y - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 36 locations, 7 error locations. Result: SAFE, OverallTime: 134.0s, OverallIterations: 18, TraceHistogramMax: 10, AutomataDifference: 20.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 101.9s, HoareTripleCheckerStatistics: 353 SDtfs, 946 SDslu, 857 SDs, 0 SdLazy, 2717 SolverSat, 422 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 6.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 754 GetRequests, 593 SyntacticMatches, 2 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 19.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=136occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 18 MinimizatonAttempts, 548 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 112 NumberOfFragments, 773 HoareAnnotationTreeSize, 10 FomulaSimplifications, 1035411 FormulaSimplificationTreeSizeReduction, 1.5s HoareSimplificationTime, 10 FomulaSimplificationsInter, 187256 FormulaSimplificationTreeSizeReductionInter, 100.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.9s InterpolantComputationTime, 702 NumberOfCodeBlocks, 549 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 684 ConstructedInterpolants, 41 QuantifiedInterpolants, 340346 SizeOfPredicates, 131 NumberOfNonLiveVariables, 1761 ConjunctsInSsa, 340 ConjunctsInUnsatCore, 18 InterpolantComputations, 5 PerfectInterpolantSequences, 919/1219 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 correct! Received shutdown request...