./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/num_conversion_1.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_80c6f61d-4a57-4795-8d9a-a179ee6ac149/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_80c6f61d-4a57-4795-8d9a-a179ee6ac149/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_80c6f61d-4a57-4795-8d9a-a179ee6ac149/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_80c6f61d-4a57-4795-8d9a-a179ee6ac149/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/num_conversion_1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_80c6f61d-4a57-4795-8d9a-a179ee6ac149/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_80c6f61d-4a57-4795-8d9a-a179ee6ac149/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 dc393f6c4862d8369d85fc8f5aceb831c4046350 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_80c6f61d-4a57-4795-8d9a-a179ee6ac149/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_80c6f61d-4a57-4795-8d9a-a179ee6ac149/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_80c6f61d-4a57-4795-8d9a-a179ee6ac149/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_80c6f61d-4a57-4795-8d9a-a179ee6ac149/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/num_conversion_1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_80c6f61d-4a57-4795-8d9a-a179ee6ac149/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_80c6f61d-4a57-4795-8d9a-a179ee6ac149/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 dc393f6c4862d8369d85fc8f5aceb831c4046350 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 10:19:30,352 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 10:19:30,353 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 10:19:30,368 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 10:19:30,369 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 10:19:30,370 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 10:19:30,372 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 10:19:30,381 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 10:19:30,386 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 10:19:30,390 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 10:19:30,391 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 10:19:30,393 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 10:19:30,393 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 10:19:30,395 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 10:19:30,396 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 10:19:30,397 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 10:19:30,398 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 10:19:30,399 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 10:19:30,402 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 10:19:30,405 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 10:19:30,409 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 10:19:30,411 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 10:19:30,414 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 10:19:30,415 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 10:19:30,417 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 10:19:30,418 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 10:19:30,418 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 10:19:30,420 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 10:19:30,420 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 10:19:30,421 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 10:19:30,421 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 10:19:30,422 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 10:19:30,423 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 10:19:30,423 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 10:19:30,424 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 10:19:30,425 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 10:19:30,425 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 10:19:30,425 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 10:19:30,426 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 10:19:30,426 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 10:19:30,428 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 10:19:30,428 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_80c6f61d-4a57-4795-8d9a-a179ee6ac149/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 10:19:30,452 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 10:19:30,462 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 10:19:30,463 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 10:19:30,464 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 10:19:30,464 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 10:19:30,464 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 10:19:30,464 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 10:19:30,465 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 10:19:30,465 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 10:19:30,465 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 10:19:30,465 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 10:19:30,465 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 10:19:30,466 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 10:19:30,466 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 10:19:30,466 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 10:19:30,466 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 10:19:30,466 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 10:19:30,467 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 10:19:30,467 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 10:19:30,467 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 10:19:30,468 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 10:19:30,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 10:19:30,469 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 10:19:30,469 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 10:19:30,469 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 10:19:30,469 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 10:19:30,470 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 10:19:30,470 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 10:19:30,470 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_80c6f61d-4a57-4795-8d9a-a179ee6ac149/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 -> dc393f6c4862d8369d85fc8f5aceb831c4046350 [2019-11-20 10:19:30,644 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 10:19:30,657 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 10:19:30,660 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 10:19:30,665 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 10:19:30,665 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 10:19:30,666 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_80c6f61d-4a57-4795-8d9a-a179ee6ac149/bin/uautomizer/../../sv-benchmarks/c/bitvector/num_conversion_1.c [2019-11-20 10:19:30,723 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_80c6f61d-4a57-4795-8d9a-a179ee6ac149/bin/uautomizer/data/e22cb98ff/4f8304b0d0674f50b8cbb35b1c13c7be/FLAG000ee7ec0 [2019-11-20 10:19:31,087 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 10:19:31,087 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_80c6f61d-4a57-4795-8d9a-a179ee6ac149/sv-benchmarks/c/bitvector/num_conversion_1.c [2019-11-20 10:19:31,091 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_80c6f61d-4a57-4795-8d9a-a179ee6ac149/bin/uautomizer/data/e22cb98ff/4f8304b0d0674f50b8cbb35b1c13c7be/FLAG000ee7ec0 [2019-11-20 10:19:31,510 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_80c6f61d-4a57-4795-8d9a-a179ee6ac149/bin/uautomizer/data/e22cb98ff/4f8304b0d0674f50b8cbb35b1c13c7be [2019-11-20 10:19:31,513 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 10:19:31,514 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 10:19:31,519 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 10:19:31,519 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 10:19:31,523 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 10:19:31,523 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:19:31" (1/1) ... [2019-11-20 10:19:31,525 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67969385 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:19:31, skipping insertion in model container [2019-11-20 10:19:31,525 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:19:31" (1/1) ... [2019-11-20 10:19:31,531 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 10:19:31,543 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 10:19:31,742 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 10:19:31,749 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 10:19:31,831 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 10:19:31,845 INFO L192 MainTranslator]: Completed translation [2019-11-20 10:19:31,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:19:31 WrapperNode [2019-11-20 10:19:31,846 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 10:19:31,847 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 10:19:31,847 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 10:19:31,847 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 10:19:31,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:19:31" (1/1) ... [2019-11-20 10:19:31,862 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:19:31" (1/1) ... [2019-11-20 10:19:31,876 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 10:19:31,878 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 10:19:31,878 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 10:19:31,878 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 10:19:31,888 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:19:31" (1/1) ... [2019-11-20 10:19:31,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:19:31" (1/1) ... [2019-11-20 10:19:31,889 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:19:31" (1/1) ... [2019-11-20 10:19:31,889 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:19:31" (1/1) ... [2019-11-20 10:19:31,892 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:19:31" (1/1) ... [2019-11-20 10:19:31,895 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:19:31" (1/1) ... [2019-11-20 10:19:31,896 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:19:31" (1/1) ... [2019-11-20 10:19:31,902 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 10:19:31,902 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 10:19:31,902 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 10:19:31,902 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 10:19:31,903 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:19:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_80c6f61d-4a57-4795-8d9a-a179ee6ac149/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 10:19:31,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 10:19:31,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 10:19:32,133 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 10:19:32,134 INFO L285 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-20 10:19:32,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:19:32 BoogieIcfgContainer [2019-11-20 10:19:32,135 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 10:19:32,136 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 10:19:32,136 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 10:19:32,139 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 10:19:32,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:19:31" (1/3) ... [2019-11-20 10:19:32,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a7c1cb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:19:32, skipping insertion in model container [2019-11-20 10:19:32,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:19:31" (2/3) ... [2019-11-20 10:19:32,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a7c1cb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:19:32, skipping insertion in model container [2019-11-20 10:19:32,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:19:32" (3/3) ... [2019-11-20 10:19:32,142 INFO L109 eAbstractionObserver]: Analyzing ICFG num_conversion_1.c [2019-11-20 10:19:32,154 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 10:19:32,159 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 10:19:32,169 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 10:19:32,196 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 10:19:32,196 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 10:19:32,196 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 10:19:32,196 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 10:19:32,197 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 10:19:32,197 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 10:19:32,197 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 10:19:32,198 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 10:19:32,211 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2019-11-20 10:19:32,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-20 10:19:32,216 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:19:32,217 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-20 10:19:32,217 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 10:19:32,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:19:32,223 INFO L82 PathProgramCache]: Analyzing trace with hash 30139652, now seen corresponding path program 1 times [2019-11-20 10:19:32,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:19:32,232 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273166673] [2019-11-20 10:19:32,233 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:19:32,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:32,315 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 10:19:32,316 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273166673] [2019-11-20 10:19:32,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 10:19:32,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 10:19:32,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376084103] [2019-11-20 10:19:32,322 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-20 10:19:32,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:19:32,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-20 10:19:32,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 10:19:32,335 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 2 states. [2019-11-20 10:19:32,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:19:32,348 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2019-11-20 10:19:32,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-20 10:19:32,349 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2019-11-20 10:19:32,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:19:32,356 INFO L225 Difference]: With dead ends: 20 [2019-11-20 10:19:32,356 INFO L226 Difference]: Without dead ends: 8 [2019-11-20 10:19:32,359 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 10:19:32,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-11-20 10:19:32,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-20 10:19:32,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-20 10:19:32,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2019-11-20 10:19:32,383 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 5 [2019-11-20 10:19:32,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:19:32,384 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2019-11-20 10:19:32,384 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-20 10:19:32,384 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2019-11-20 10:19:32,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-20 10:19:32,384 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:19:32,384 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-20 10:19:32,385 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 10:19:32,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:19:32,385 INFO L82 PathProgramCache]: Analyzing trace with hash 29811951, now seen corresponding path program 1 times [2019-11-20 10:19:32,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:19:32,385 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524830862] [2019-11-20 10:19:32,386 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:19:32,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:32,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:19:32,460 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524830862] [2019-11-20 10:19:32,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 10:19:32,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 10:19:32,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593492210] [2019-11-20 10:19:32,462 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 10:19:32,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:19:32,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 10:19:32,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 10:19:32,463 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand 3 states. [2019-11-20 10:19:32,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:19:32,480 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2019-11-20 10:19:32,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 10:19:32,481 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-11-20 10:19:32,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:19:32,482 INFO L225 Difference]: With dead ends: 15 [2019-11-20 10:19:32,482 INFO L226 Difference]: Without dead ends: 11 [2019-11-20 10:19:32,483 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 10:19:32,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-11-20 10:19:32,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2019-11-20 10:19:32,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-20 10:19:32,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2019-11-20 10:19:32,486 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 5 [2019-11-20 10:19:32,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:19:32,486 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2019-11-20 10:19:32,486 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 10:19:32,486 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2019-11-20 10:19:32,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-20 10:19:32,487 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:19:32,487 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 10:19:32,487 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 10:19:32,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:19:32,487 INFO L82 PathProgramCache]: Analyzing trace with hash 608596189, now seen corresponding path program 1 times [2019-11-20 10:19:32,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:19:32,488 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872299847] [2019-11-20 10:19:32,488 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:19:32,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:32,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:19:32,566 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872299847] [2019-11-20 10:19:32,566 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176535591] [2019-11-20 10:19:32,567 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_80c6f61d-4a57-4795-8d9a-a179ee6ac149/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 10:19:32,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:32,609 INFO L255 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 10:19:32,613 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:19:32,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:19:32,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:19:32,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2019-11-20 10:19:32,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486904121] [2019-11-20 10:19:32,669 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 10:19:32,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:19:32,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 10:19:32,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-20 10:19:32,670 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 5 states. [2019-11-20 10:19:32,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:19:32,717 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2019-11-20 10:19:32,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 10:19:32,718 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-11-20 10:19:32,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:19:32,718 INFO L225 Difference]: With dead ends: 18 [2019-11-20 10:19:32,719 INFO L226 Difference]: Without dead ends: 14 [2019-11-20 10:19:32,719 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-20 10:19:32,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-20 10:19:32,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2019-11-20 10:19:32,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-20 10:19:32,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2019-11-20 10:19:32,723 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 8 [2019-11-20 10:19:32,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:19:32,723 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2019-11-20 10:19:32,723 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 10:19:32,723 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2019-11-20 10:19:32,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-20 10:19:32,724 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:19:32,724 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2019-11-20 10:19:32,927 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:19:32,927 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 10:19:32,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:19:32,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1123862993, now seen corresponding path program 2 times [2019-11-20 10:19:32,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:19:32,928 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484138321] [2019-11-20 10:19:32,928 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:19:32,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:33,037 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:19:33,037 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484138321] [2019-11-20 10:19:33,037 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258983907] [2019-11-20 10:19:33,038 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_80c6f61d-4a57-4795-8d9a-a179ee6ac149/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 10:19:33,078 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 10:19:33,079 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 10:19:33,081 INFO L255 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 10:19:33,082 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:19:33,139 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:19:33,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:19:33,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2019-11-20 10:19:33,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021454785] [2019-11-20 10:19:33,141 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 10:19:33,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:19:33,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 10:19:33,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-11-20 10:19:33,141 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 7 states. [2019-11-20 10:19:33,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:19:33,190 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2019-11-20 10:19:33,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 10:19:33,190 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2019-11-20 10:19:33,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:19:33,191 INFO L225 Difference]: With dead ends: 21 [2019-11-20 10:19:33,191 INFO L226 Difference]: Without dead ends: 17 [2019-11-20 10:19:33,192 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-11-20 10:19:33,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-20 10:19:33,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2019-11-20 10:19:33,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-20 10:19:33,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2019-11-20 10:19:33,196 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 11 [2019-11-20 10:19:33,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:19:33,196 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2019-11-20 10:19:33,196 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 10:19:33,196 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2019-11-20 10:19:33,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-20 10:19:33,197 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:19:33,197 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1] [2019-11-20 10:19:33,400 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:19:33,400 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 10:19:33,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:19:33,400 INFO L82 PathProgramCache]: Analyzing trace with hash -193357923, now seen corresponding path program 3 times [2019-11-20 10:19:33,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:19:33,400 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313632141] [2019-11-20 10:19:33,401 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:19:33,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:33,499 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:19:33,499 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313632141] [2019-11-20 10:19:33,499 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738089426] [2019-11-20 10:19:33,499 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_80c6f61d-4a57-4795-8d9a-a179ee6ac149/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 10:19:33,535 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-11-20 10:19:33,535 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 10:19:33,536 INFO L255 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-20 10:19:33,536 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:19:33,622 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:19:33,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:19:33,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2019-11-20 10:19:33,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692577169] [2019-11-20 10:19:33,623 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-20 10:19:33,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:19:33,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-20 10:19:33,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-11-20 10:19:33,624 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand 9 states. [2019-11-20 10:19:33,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:19:33,719 INFO L93 Difference]: Finished difference Result 24 states and 29 transitions. [2019-11-20 10:19:33,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 10:19:33,722 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2019-11-20 10:19:33,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:19:33,722 INFO L225 Difference]: With dead ends: 24 [2019-11-20 10:19:33,723 INFO L226 Difference]: Without dead ends: 20 [2019-11-20 10:19:33,723 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-11-20 10:19:33,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-20 10:19:33,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2019-11-20 10:19:33,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-20 10:19:33,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2019-11-20 10:19:33,727 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 14 [2019-11-20 10:19:33,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:19:33,728 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2019-11-20 10:19:33,728 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-20 10:19:33,728 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2019-11-20 10:19:33,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-20 10:19:33,728 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:19:33,729 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1] [2019-11-20 10:19:33,929 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:19:33,929 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 10:19:33,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:19:33,930 INFO L82 PathProgramCache]: Analyzing trace with hash 764254063, now seen corresponding path program 4 times [2019-11-20 10:19:33,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:19:33,930 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60751360] [2019-11-20 10:19:33,930 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:19:33,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:34,064 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:19:34,064 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60751360] [2019-11-20 10:19:34,065 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396196560] [2019-11-20 10:19:34,065 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_80c6f61d-4a57-4795-8d9a-a179ee6ac149/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 10:19:34,098 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-20 10:19:34,098 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 10:19:34,099 INFO L255 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-20 10:19:34,100 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:19:34,216 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:19:34,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:19:34,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2019-11-20 10:19:34,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637681223] [2019-11-20 10:19:34,217 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-20 10:19:34,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:19:34,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-20 10:19:34,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2019-11-20 10:19:34,218 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand 11 states. [2019-11-20 10:19:34,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:19:34,329 INFO L93 Difference]: Finished difference Result 27 states and 33 transitions. [2019-11-20 10:19:34,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 10:19:34,329 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 17 [2019-11-20 10:19:34,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:19:34,330 INFO L225 Difference]: With dead ends: 27 [2019-11-20 10:19:34,330 INFO L226 Difference]: Without dead ends: 23 [2019-11-20 10:19:34,331 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2019-11-20 10:19:34,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-20 10:19:34,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2019-11-20 10:19:34,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-20 10:19:34,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2019-11-20 10:19:34,339 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 17 [2019-11-20 10:19:34,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:19:34,339 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2019-11-20 10:19:34,340 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-20 10:19:34,340 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2019-11-20 10:19:34,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-20 10:19:34,340 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:19:34,341 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1] [2019-11-20 10:19:34,544 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:19:34,544 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 10:19:34,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:19:34,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1810148957, now seen corresponding path program 5 times [2019-11-20 10:19:34,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:19:34,545 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182385657] [2019-11-20 10:19:34,545 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:19:34,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:34,682 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:19:34,683 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182385657] [2019-11-20 10:19:34,683 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495678367] [2019-11-20 10:19:34,683 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_80c6f61d-4a57-4795-8d9a-a179ee6ac149/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 10:19:34,728 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-11-20 10:19:34,729 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 10:19:34,729 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-20 10:19:34,731 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:19:34,887 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:19:34,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:19:34,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2019-11-20 10:19:34,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419067102] [2019-11-20 10:19:34,888 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-20 10:19:34,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:19:34,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-20 10:19:34,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2019-11-20 10:19:34,889 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand 13 states. [2019-11-20 10:19:34,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:19:34,996 INFO L93 Difference]: Finished difference Result 30 states and 37 transitions. [2019-11-20 10:19:34,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 10:19:34,999 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 20 [2019-11-20 10:19:34,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:19:35,000 INFO L225 Difference]: With dead ends: 30 [2019-11-20 10:19:35,000 INFO L226 Difference]: Without dead ends: 26 [2019-11-20 10:19:35,000 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2019-11-20 10:19:35,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-20 10:19:35,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2019-11-20 10:19:35,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-20 10:19:35,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2019-11-20 10:19:35,006 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 20 [2019-11-20 10:19:35,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:19:35,006 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2019-11-20 10:19:35,006 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-20 10:19:35,006 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2019-11-20 10:19:35,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-20 10:19:35,007 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:19:35,007 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1] [2019-11-20 10:19:35,208 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:19:35,208 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 10:19:35,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:19:35,208 INFO L82 PathProgramCache]: Analyzing trace with hash 77203631, now seen corresponding path program 6 times [2019-11-20 10:19:35,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:19:35,209 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725817882] [2019-11-20 10:19:35,209 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:19:35,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:35,343 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:19:35,343 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725817882] [2019-11-20 10:19:35,344 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57443044] [2019-11-20 10:19:35,344 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_80c6f61d-4a57-4795-8d9a-a179ee6ac149/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 10:19:35,393 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-11-20 10:19:35,393 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 10:19:35,394 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-20 10:19:35,396 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:19:35,652 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:19:35,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:19:35,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2019-11-20 10:19:35,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911339603] [2019-11-20 10:19:35,653 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-20 10:19:35,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:19:35,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-20 10:19:35,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2019-11-20 10:19:35,655 INFO L87 Difference]: Start difference. First operand 24 states and 30 transitions. Second operand 15 states. [2019-11-20 10:19:35,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:19:35,853 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2019-11-20 10:19:35,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-20 10:19:35,853 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 23 [2019-11-20 10:19:35,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:19:35,854 INFO L225 Difference]: With dead ends: 33 [2019-11-20 10:19:35,854 INFO L226 Difference]: Without dead ends: 29 [2019-11-20 10:19:35,855 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2019-11-20 10:19:35,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-20 10:19:35,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2019-11-20 10:19:35,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-20 10:19:35,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2019-11-20 10:19:35,865 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 23 [2019-11-20 10:19:35,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:19:35,866 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2019-11-20 10:19:35,866 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-20 10:19:35,866 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2019-11-20 10:19:35,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-20 10:19:35,867 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:19:35,867 INFO L410 BasicCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1] [2019-11-20 10:19:36,071 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:19:36,071 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 10:19:36,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:19:36,071 INFO L82 PathProgramCache]: Analyzing trace with hash -590105315, now seen corresponding path program 7 times [2019-11-20 10:19:36,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:19:36,072 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943691873] [2019-11-20 10:19:36,072 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:19:36,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:36,251 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:19:36,251 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943691873] [2019-11-20 10:19:36,251 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286350709] [2019-11-20 10:19:36,251 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_80c6f61d-4a57-4795-8d9a-a179ee6ac149/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 10:19:36,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:36,293 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-20 10:19:36,294 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:19:36,534 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:19:36,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:19:36,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2019-11-20 10:19:36,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067427814] [2019-11-20 10:19:36,535 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-20 10:19:36,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:19:36,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-20 10:19:36,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2019-11-20 10:19:36,536 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand 17 states. [2019-11-20 10:19:36,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:19:36,728 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2019-11-20 10:19:36,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-20 10:19:36,729 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 26 [2019-11-20 10:19:36,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:19:36,729 INFO L225 Difference]: With dead ends: 36 [2019-11-20 10:19:36,729 INFO L226 Difference]: Without dead ends: 32 [2019-11-20 10:19:36,730 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2019-11-20 10:19:36,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-11-20 10:19:36,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2019-11-20 10:19:36,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-20 10:19:36,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2019-11-20 10:19:36,735 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 26 [2019-11-20 10:19:36,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:19:36,735 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2019-11-20 10:19:36,735 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-20 10:19:36,735 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2019-11-20 10:19:36,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-20 10:19:36,736 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:19:36,736 INFO L410 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1] [2019-11-20 10:19:36,939 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 10:19:36,939 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 10:19:36,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:19:36,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1012697583, now seen corresponding path program 8 times [2019-11-20 10:19:36,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:19:36,940 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140738811] [2019-11-20 10:19:36,940 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:19:36,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:19:36,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:19:37,009 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 10:19:37,009 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 10:19:37,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 10:19:37 BoogieIcfgContainer [2019-11-20 10:19:37,041 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 10:19:37,041 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 10:19:37,041 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 10:19:37,042 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 10:19:37,042 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:19:32" (3/4) ... [2019-11-20 10:19:37,045 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-20 10:19:37,045 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 10:19:37,048 INFO L168 Benchmark]: Toolchain (without parser) took 5532.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -109.1 MB). Peak memory consumption was 38.7 MB. Max. memory is 11.5 GB. [2019-11-20 10:19:37,053 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 10:19:37,053 INFO L168 Benchmark]: CACSL2BoogieTranslator took 327.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -199.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-11-20 10:19:37,054 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.61 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 10:19:37,054 INFO L168 Benchmark]: Boogie Preprocessor took 24.04 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-11-20 10:19:37,055 INFO L168 Benchmark]: RCFGBuilder took 232.98 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 11.5 GB. [2019-11-20 10:19:37,055 INFO L168 Benchmark]: TraceAbstraction took 4905.16 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 70.3 MB). Peak memory consumption was 70.3 MB. Max. memory is 11.5 GB. [2019-11-20 10:19:37,059 INFO L168 Benchmark]: Witness Printer took 4.08 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 10:19:37,065 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 327.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -199.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.61 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.04 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 232.98 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4905.16 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 70.3 MB). Peak memory consumption was 70.3 MB. Max. memory is 11.5 GB. * Witness Printer took 4.08 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 6]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftLeft at line 22, overapproximation of bitwiseAnd at line 23. Possible FailurePath: [L14] unsigned char x; [L15] unsigned char y; [L16] unsigned char c; [L18] x = 37 [L19] y = 0 [L20] c = 0 [L21] COND TRUE c < (unsigned char)8 [L22] unsigned char i = ((unsigned char)1) << c; [L23] unsigned char bit = x & i; [L24] COND TRUE bit != (unsigned char)0 [L25] y = y + i [L27] c = c + ((unsigned char)1) [L21] COND TRUE c < (unsigned char)8 [L22] unsigned char i = ((unsigned char)1) << c; [L23] unsigned char bit = x & i; [L24] COND TRUE bit != (unsigned char)0 [L25] y = y + i [L27] c = c + ((unsigned char)1) [L21] COND TRUE c < (unsigned char)8 [L22] unsigned char i = ((unsigned char)1) << c; [L23] unsigned char bit = x & i; [L24] COND TRUE bit != (unsigned char)0 [L25] y = y + i [L27] c = c + ((unsigned char)1) [L21] COND TRUE c < (unsigned char)8 [L22] unsigned char i = ((unsigned char)1) << c; [L23] unsigned char bit = x & i; [L24] COND TRUE bit != (unsigned char)0 [L25] y = y + i [L27] c = c + ((unsigned char)1) [L21] COND TRUE c < (unsigned char)8 [L22] unsigned char i = ((unsigned char)1) << c; [L23] unsigned char bit = x & i; [L24] COND TRUE bit != (unsigned char)0 [L25] y = y + i [L27] c = c + ((unsigned char)1) [L21] COND TRUE c < (unsigned char)8 [L22] unsigned char i = ((unsigned char)1) << c; [L23] unsigned char bit = x & i; [L24] COND TRUE bit != (unsigned char)0 [L25] y = y + i [L27] c = c + ((unsigned char)1) [L21] COND TRUE c < (unsigned char)8 [L22] unsigned char i = ((unsigned char)1) << c; [L23] unsigned char bit = x & i; [L24] COND TRUE bit != (unsigned char)0 [L25] y = y + i [L27] c = c + ((unsigned char)1) [L21] COND TRUE c < (unsigned char)8 [L22] unsigned char i = ((unsigned char)1) << c; [L23] unsigned char bit = x & i; [L24] COND TRUE bit != (unsigned char)0 [L25] y = y + i [L27] c = c + ((unsigned char)1) [L21] COND FALSE !(c < (unsigned char)8) [L5] COND TRUE !(cond) [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Result: UNSAFE, OverallTime: 4.8s, OverallIterations: 10, TraceHistogramMax: 8, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 125 SDtfs, 136 SDslu, 565 SDs, 0 SdLazy, 585 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 158 GetRequests, 81 SyntacticMatches, 13 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 16 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 277 NumberOfCodeBlocks, 277 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 232 ConstructedInterpolants, 70 QuantifiedInterpolants, 54320 SizeOfPredicates, 7 NumberOfNonLiveVariables, 280 ConjunctsInSsa, 83 ConjunctsInUnsatCore, 16 InterpolantComputations, 2 PerfectInterpolantSequences, 0/392 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-678e011 [2019-11-20 10:19:39,017 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 10:19:39,019 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 10:19:39,031 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 10:19:39,032 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 10:19:39,034 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 10:19:39,036 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 10:19:39,045 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 10:19:39,051 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 10:19:39,054 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 10:19:39,055 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 10:19:39,056 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 10:19:39,057 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 10:19:39,060 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 10:19:39,061 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 10:19:39,063 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 10:19:39,065 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 10:19:39,065 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 10:19:39,068 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 10:19:39,072 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 10:19:39,075 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 10:19:39,078 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 10:19:39,080 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 10:19:39,082 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 10:19:39,086 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 10:19:39,087 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 10:19:39,087 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 10:19:39,088 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 10:19:39,089 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 10:19:39,090 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 10:19:39,090 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 10:19:39,091 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 10:19:39,092 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 10:19:39,092 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 10:19:39,094 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 10:19:39,094 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 10:19:39,095 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 10:19:39,095 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 10:19:39,095 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 10:19:39,096 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 10:19:39,098 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 10:19:39,098 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_80c6f61d-4a57-4795-8d9a-a179ee6ac149/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-20 10:19:39,124 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 10:19:39,126 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 10:19:39,127 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 10:19:39,128 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 10:19:39,128 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 10:19:39,128 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 10:19:39,128 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 10:19:39,129 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 10:19:39,129 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 10:19:39,129 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 10:19:39,129 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 10:19:39,129 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 10:19:39,130 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 10:19:39,130 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 10:19:39,130 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 10:19:39,130 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 10:19:39,130 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 10:19:39,131 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 10:19:39,131 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 10:19:39,131 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 10:19:39,131 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 10:19:39,131 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 10:19:39,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 10:19:39,132 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 10:19:39,132 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 10:19:39,132 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 10:19:39,133 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 10:19:39,133 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 10:19:39,133 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 10:19:39,133 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 10:19:39,133 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_80c6f61d-4a57-4795-8d9a-a179ee6ac149/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 -> dc393f6c4862d8369d85fc8f5aceb831c4046350 [2019-11-20 10:19:39,405 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 10:19:39,415 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 10:19:39,418 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 10:19:39,420 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 10:19:39,420 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 10:19:39,421 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_80c6f61d-4a57-4795-8d9a-a179ee6ac149/bin/uautomizer/../../sv-benchmarks/c/bitvector/num_conversion_1.c [2019-11-20 10:19:39,471 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_80c6f61d-4a57-4795-8d9a-a179ee6ac149/bin/uautomizer/data/236ff238f/45465af4592040838728e3c8d4679117/FLAG78d1b6271 [2019-11-20 10:19:39,818 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 10:19:39,819 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_80c6f61d-4a57-4795-8d9a-a179ee6ac149/sv-benchmarks/c/bitvector/num_conversion_1.c [2019-11-20 10:19:39,825 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_80c6f61d-4a57-4795-8d9a-a179ee6ac149/bin/uautomizer/data/236ff238f/45465af4592040838728e3c8d4679117/FLAG78d1b6271 [2019-11-20 10:19:40,216 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_80c6f61d-4a57-4795-8d9a-a179ee6ac149/bin/uautomizer/data/236ff238f/45465af4592040838728e3c8d4679117 [2019-11-20 10:19:40,219 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 10:19:40,221 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 10:19:40,225 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 10:19:40,226 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 10:19:40,229 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 10:19:40,230 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:19:40" (1/1) ... [2019-11-20 10:19:40,233 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ca0422 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:19:40, skipping insertion in model container [2019-11-20 10:19:40,233 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:19:40" (1/1) ... [2019-11-20 10:19:40,241 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 10:19:40,261 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 10:19:40,442 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 10:19:40,446 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 10:19:40,466 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 10:19:40,483 INFO L192 MainTranslator]: Completed translation [2019-11-20 10:19:40,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:19:40 WrapperNode [2019-11-20 10:19:40,483 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 10:19:40,484 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 10:19:40,484 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 10:19:40,484 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 10:19:40,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:19:40" (1/1) ... [2019-11-20 10:19:40,501 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:19:40" (1/1) ... [2019-11-20 10:19:40,519 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 10:19:40,520 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 10:19:40,520 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 10:19:40,520 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 10:19:40,600 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:19:40" (1/1) ... [2019-11-20 10:19:40,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:19:40" (1/1) ... [2019-11-20 10:19:40,602 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:19:40" (1/1) ... [2019-11-20 10:19:40,602 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:19:40" (1/1) ... [2019-11-20 10:19:40,606 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:19:40" (1/1) ... [2019-11-20 10:19:40,610 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:19:40" (1/1) ... [2019-11-20 10:19:40,614 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:19:40" (1/1) ... [2019-11-20 10:19:40,616 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 10:19:40,617 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 10:19:40,617 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 10:19:40,617 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 10:19:40,618 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:19:40" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_80c6f61d-4a57-4795-8d9a-a179ee6ac149/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 10:19:40,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 10:19:40,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 10:19:40,849 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 10:19:40,849 INFO L285 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-20 10:19:40,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:19:40 BoogieIcfgContainer [2019-11-20 10:19:40,850 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 10:19:40,851 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 10:19:40,852 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 10:19:40,854 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 10:19:40,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:19:40" (1/3) ... [2019-11-20 10:19:40,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a1772ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:19:40, skipping insertion in model container [2019-11-20 10:19:40,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:19:40" (2/3) ... [2019-11-20 10:19:40,856 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a1772ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:19:40, skipping insertion in model container [2019-11-20 10:19:40,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:19:40" (3/3) ... [2019-11-20 10:19:40,857 INFO L109 eAbstractionObserver]: Analyzing ICFG num_conversion_1.c [2019-11-20 10:19:40,867 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 10:19:40,873 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 10:19:40,881 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 10:19:40,901 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 10:19:40,901 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 10:19:40,901 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 10:19:40,901 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 10:19:40,901 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 10:19:40,902 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 10:19:40,902 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 10:19:40,902 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 10:19:40,913 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2019-11-20 10:19:40,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-20 10:19:40,919 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:19:40,919 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-20 10:19:40,920 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 10:19:40,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:19:40,925 INFO L82 PathProgramCache]: Analyzing trace with hash 30139652, now seen corresponding path program 1 times [2019-11-20 10:19:40,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 10:19:40,936 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [145157460] [2019-11-20 10:19:40,937 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_80c6f61d-4a57-4795-8d9a-a179ee6ac149/bin/uautomizer/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 10:19:41,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:41,015 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-20 10:19:41,019 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:19:41,031 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 10:19:41,031 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 10:19:41,034 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 10:19:41,035 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [145157460] [2019-11-20 10:19:41,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 10:19:41,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-20 10:19:41,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678354645] [2019-11-20 10:19:41,042 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-20 10:19:41,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 10:19:41,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-20 10:19:41,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 10:19:41,058 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 2 states. [2019-11-20 10:19:41,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:19:41,075 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2019-11-20 10:19:41,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-20 10:19:41,077 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2019-11-20 10:19:41,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:19:41,085 INFO L225 Difference]: With dead ends: 20 [2019-11-20 10:19:41,085 INFO L226 Difference]: Without dead ends: 8 [2019-11-20 10:19:41,087 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 10:19:41,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-11-20 10:19:41,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-20 10:19:41,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-20 10:19:41,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2019-11-20 10:19:41,129 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 5 [2019-11-20 10:19:41,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:19:41,130 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2019-11-20 10:19:41,130 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-20 10:19:41,130 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2019-11-20 10:19:41,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-20 10:19:41,131 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:19:41,131 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-20 10:19:41,333 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 10:19:41,333 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 10:19:41,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:19:41,333 INFO L82 PathProgramCache]: Analyzing trace with hash 29811951, now seen corresponding path program 1 times [2019-11-20 10:19:41,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 10:19:41,334 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [976955084] [2019-11-20 10:19:41,334 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_80c6f61d-4a57-4795-8d9a-a179ee6ac149/bin/uautomizer/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 10:19:41,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:41,370 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 10:19:41,371 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:19:41,392 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 10:19:41,393 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 10:19:41,409 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 10:19:41,409 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [976955084] [2019-11-20 10:19:41,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 10:19:41,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-20 10:19:41,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763782145] [2019-11-20 10:19:41,411 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 10:19:41,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 10:19:41,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 10:19:41,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 10:19:41,412 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand 4 states. [2019-11-20 10:19:41,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:19:41,437 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2019-11-20 10:19:41,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 10:19:41,438 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-11-20 10:19:41,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:19:41,439 INFO L225 Difference]: With dead ends: 16 [2019-11-20 10:19:41,439 INFO L226 Difference]: Without dead ends: 12 [2019-11-20 10:19:41,440 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 10:19:41,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-11-20 10:19:41,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-11-20 10:19:41,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-20 10:19:41,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2019-11-20 10:19:41,443 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 5 [2019-11-20 10:19:41,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:19:41,443 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2019-11-20 10:19:41,444 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 10:19:41,444 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2019-11-20 10:19:41,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-20 10:19:41,444 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:19:41,444 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2019-11-20 10:19:41,645 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 10:19:41,645 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 10:19:41,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:19:41,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1123862993, now seen corresponding path program 1 times [2019-11-20 10:19:41,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 10:19:41,646 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [433154966] [2019-11-20 10:19:41,646 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_80c6f61d-4a57-4795-8d9a-a179ee6ac149/bin/uautomizer/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 10:19:41,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:41,701 INFO L255 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 10:19:41,702 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:19:41,748 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:19:41,748 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 10:19:41,812 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:19:41,812 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [433154966] [2019-11-20 10:19:41,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:19:41,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2019-11-20 10:19:41,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445073861] [2019-11-20 10:19:41,814 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 10:19:41,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 10:19:41,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 10:19:41,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-20 10:19:41,815 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 7 states. [2019-11-20 10:19:42,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:19:42,059 INFO L93 Difference]: Finished difference Result 41 states and 49 transitions. [2019-11-20 10:19:42,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-20 10:19:42,060 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2019-11-20 10:19:42,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:19:42,061 INFO L225 Difference]: With dead ends: 41 [2019-11-20 10:19:42,061 INFO L226 Difference]: Without dead ends: 34 [2019-11-20 10:19:42,062 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-11-20 10:19:42,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-11-20 10:19:42,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 19. [2019-11-20 10:19:42,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-20 10:19:42,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2019-11-20 10:19:42,069 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 11 [2019-11-20 10:19:42,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:19:42,069 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2019-11-20 10:19:42,069 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 10:19:42,070 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2019-11-20 10:19:42,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-20 10:19:42,072 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:19:42,072 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 10:19:42,274 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 10:19:42,274 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 10:19:42,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:19:42,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1066604691, now seen corresponding path program 1 times [2019-11-20 10:19:42,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 10:19:42,275 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [402551867] [2019-11-20 10:19:42,275 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_80c6f61d-4a57-4795-8d9a-a179ee6ac149/bin/uautomizer/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 10:19:42,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:19:42,318 INFO L255 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 10:19:42,319 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:19:42,344 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:19:42,345 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 10:19:42,389 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:19:42,389 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [402551867] [2019-11-20 10:19:42,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:19:42,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2019-11-20 10:19:42,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677225507] [2019-11-20 10:19:42,390 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-20 10:19:42,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 10:19:42,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-20 10:19:42,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-20 10:19:42,391 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand 8 states. [2019-11-20 10:19:42,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:19:42,515 INFO L93 Difference]: Finished difference Result 28 states and 35 transitions. [2019-11-20 10:19:42,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 10:19:42,516 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2019-11-20 10:19:42,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:19:42,517 INFO L225 Difference]: With dead ends: 28 [2019-11-20 10:19:42,517 INFO L226 Difference]: Without dead ends: 24 [2019-11-20 10:19:42,517 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2019-11-20 10:19:42,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-20 10:19:42,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-11-20 10:19:42,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-20 10:19:42,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2019-11-20 10:19:42,529 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 11 [2019-11-20 10:19:42,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:19:42,530 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2019-11-20 10:19:42,530 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-20 10:19:42,530 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2019-11-20 10:19:42,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-20 10:19:42,531 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:19:42,531 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 4, 2, 1, 1, 1, 1, 1] [2019-11-20 10:19:42,733 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 10:19:42,733 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 10:19:42,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:19:42,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1658775637, now seen corresponding path program 2 times [2019-11-20 10:19:42,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 10:19:42,735 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2120304521] [2019-11-20 10:19:42,735 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_80c6f61d-4a57-4795-8d9a-a179ee6ac149/bin/uautomizer/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 10:19:42,789 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 10:19:42,789 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 10:19:42,790 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-20 10:19:42,792 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:19:42,909 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 23 proven. 26 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-20 10:19:42,909 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 10:19:43,091 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 23 proven. 26 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-20 10:19:43,092 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2120304521] [2019-11-20 10:19:43,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:19:43,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2019-11-20 10:19:43,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127203891] [2019-11-20 10:19:43,094 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-20 10:19:43,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 10:19:43,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-20 10:19:43,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2019-11-20 10:19:43,097 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 13 states. [2019-11-20 10:19:43,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:19:43,782 INFO L93 Difference]: Finished difference Result 75 states and 86 transitions. [2019-11-20 10:19:43,783 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-20 10:19:43,783 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 23 [2019-11-20 10:19:43,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:19:43,784 INFO L225 Difference]: With dead ends: 75 [2019-11-20 10:19:43,784 INFO L226 Difference]: Without dead ends: 66 [2019-11-20 10:19:43,785 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2019-11-20 10:19:43,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2019-11-20 10:19:43,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 37. [2019-11-20 10:19:43,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-20 10:19:43,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2019-11-20 10:19:43,804 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 23 [2019-11-20 10:19:43,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:19:43,805 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2019-11-20 10:19:43,805 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-20 10:19:43,806 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2019-11-20 10:19:43,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-20 10:19:43,812 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:19:43,812 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 1, 1, 1, 1, 1] [2019-11-20 10:19:44,014 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 10:19:44,016 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 10:19:44,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:19:44,016 INFO L82 PathProgramCache]: Analyzing trace with hash -978717267, now seen corresponding path program 3 times [2019-11-20 10:19:44,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 10:19:44,017 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [492283245] [2019-11-20 10:19:44,017 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_80c6f61d-4a57-4795-8d9a-a179ee6ac149/bin/uautomizer/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 10:19:44,056 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-20 10:19:44,056 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 10:19:44,057 INFO L255 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 10:19:44,058 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:19:44,151 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-11-20 10:19:44,152 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 10:19:44,276 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-11-20 10:19:44,276 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [492283245] [2019-11-20 10:19:44,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:19:44,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2019-11-20 10:19:44,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649078845] [2019-11-20 10:19:44,278 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-20 10:19:44,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 10:19:44,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-20 10:19:44,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-11-20 10:19:44,279 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand 10 states. [2019-11-20 10:19:44,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:19:44,507 INFO L93 Difference]: Finished difference Result 86 states and 106 transitions. [2019-11-20 10:19:44,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-20 10:19:44,515 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 23 [2019-11-20 10:19:44,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:19:44,517 INFO L225 Difference]: With dead ends: 86 [2019-11-20 10:19:44,517 INFO L226 Difference]: Without dead ends: 52 [2019-11-20 10:19:44,518 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272 [2019-11-20 10:19:44,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-11-20 10:19:44,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 47. [2019-11-20 10:19:44,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-11-20 10:19:44,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2019-11-20 10:19:44,530 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 23 [2019-11-20 10:19:44,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:19:44,531 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2019-11-20 10:19:44,531 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-20 10:19:44,531 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2019-11-20 10:19:44,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-20 10:19:44,532 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:19:44,532 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 4, 2, 1, 1, 1, 1, 1] [2019-11-20 10:19:44,735 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 10:19:44,735 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 10:19:44,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:19:44,736 INFO L82 PathProgramCache]: Analyzing trace with hash -921458965, now seen corresponding path program 4 times [2019-11-20 10:19:44,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 10:19:44,736 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [572671066] [2019-11-20 10:19:44,736 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_80c6f61d-4a57-4795-8d9a-a179ee6ac149/bin/uautomizer/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 10:19:44,779 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-20 10:19:44,780 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 10:19:44,780 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-20 10:19:44,785 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:19:44,885 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 11 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:19:44,885 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 10:19:45,054 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 11 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:19:45,054 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [572671066] [2019-11-20 10:19:45,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:19:45,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2019-11-20 10:19:45,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681569790] [2019-11-20 10:19:45,056 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-20 10:19:45,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 10:19:45,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-20 10:19:45,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2019-11-20 10:19:45,057 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand 16 states. [2019-11-20 10:19:45,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:19:45,320 INFO L93 Difference]: Finished difference Result 80 states and 91 transitions. [2019-11-20 10:19:45,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-20 10:19:45,324 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 23 [2019-11-20 10:19:45,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:19:45,324 INFO L225 Difference]: With dead ends: 80 [2019-11-20 10:19:45,325 INFO L226 Difference]: Without dead ends: 42 [2019-11-20 10:19:45,325 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2019-11-20 10:19:45,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-11-20 10:19:45,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2019-11-20 10:19:45,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-11-20 10:19:45,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2019-11-20 10:19:45,340 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 23 [2019-11-20 10:19:45,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:19:45,340 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2019-11-20 10:19:45,341 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-20 10:19:45,341 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2019-11-20 10:19:45,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-20 10:19:45,342 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:19:45,342 INFO L410 BasicCegarLoop]: trace histogram [8, 8, 5, 3, 1, 1, 1, 1, 1] [2019-11-20 10:19:45,544 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 10:19:45,545 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 10:19:45,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:19:45,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1658007635, now seen corresponding path program 5 times [2019-11-20 10:19:45,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 10:19:45,548 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1777882605] [2019-11-20 10:19:45,549 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_80c6f61d-4a57-4795-8d9a-a179ee6ac149/bin/uautomizer/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 10:19:45,609 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2019-11-20 10:19:45,609 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 10:19:45,610 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-20 10:19:45,611 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:19:45,927 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-20 10:19:45,927 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 10:19:47,132 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 4 proven. 85 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-20 10:19:47,133 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1777882605] [2019-11-20 10:19:47,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:19:47,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17] total 32 [2019-11-20 10:19:47,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716148819] [2019-11-20 10:19:47,134 INFO L442 AbstractCegarLoop]: Interpolant automaton has 33 states [2019-11-20 10:19:47,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 10:19:47,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2019-11-20 10:19:47,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=901, Unknown=0, NotChecked=0, Total=1056 [2019-11-20 10:19:47,135 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand 33 states. [2019-11-20 10:19:48,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:19:48,772 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2019-11-20 10:19:48,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-11-20 10:19:48,772 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 29 [2019-11-20 10:19:48,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:19:48,773 INFO L225 Difference]: With dead ends: 47 [2019-11-20 10:19:48,773 INFO L226 Difference]: Without dead ends: 0 [2019-11-20 10:19:48,775 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=302, Invalid=1338, Unknown=0, NotChecked=0, Total=1640 [2019-11-20 10:19:48,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-20 10:19:48,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-20 10:19:48,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-20 10:19:48,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-20 10:19:48,775 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2019-11-20 10:19:48,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:19:48,776 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 10:19:48,776 INFO L463 AbstractCegarLoop]: Interpolant automaton has 33 states. [2019-11-20 10:19:48,776 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-20 10:19:48,776 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-20 10:19:48,976 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 10:19:48,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-20 10:19:49,150 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 136 [2019-11-20 10:19:49,644 WARN L191 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 62 [2019-11-20 10:19:49,646 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-20 10:19:49,647 INFO L447 ceAbstractionStarter]: At program point L31(lines 12 32) the Hoare annotation is: true [2019-11-20 10:19:49,647 INFO L440 ceAbstractionStarter]: At program point L21-2(lines 21 28) the Hoare annotation is: (let ((.cse7 (= (_ bv0 32) ((_ zero_extend 24) ULTIMATE.start_main_~bit~0)))) (let ((.cse2 (not .cse7)) (.cse4 (= (_ bv1 8) ULTIMATE.start_main_~y~0)) (.cse3 (= ULTIMATE.start_main_~bit~0 (_ bv0 8))) (.cse1 (= (_ bv5 8) ULTIMATE.start_main_~y~0)) (.cse5 (= (_ bv37 8) ULTIMATE.start_main_~y~0)) (.cse0 (= (_ bv37 8) ULTIMATE.start_main_~x~0))) (or (and (= (_ bv0 8) ULTIMATE.start_main_~c~0) (= (_ bv0 8) ULTIMATE.start_main_~y~0) .cse0) (and .cse1 (and .cse0 (= (_ bv3 8) ULTIMATE.start_main_~c~0)) .cse2) (and .cse3 .cse1 .cse0 (= (_ bv5 8) ULTIMATE.start_main_~c~0)) (and .cse4 (= (_ bv1 8) ULTIMATE.start_main_~c~0) .cse0 .cse2) (let ((.cse6 ((_ zero_extend 24) ((_ extract 7 0) (bvadd ((_ zero_extend 24) ULTIMATE.start_main_~c~0) (_ bv1 32)))))) (and .cse5 .cse0 (not (bvslt .cse6 (_ bv8 32))) (= ((_ zero_extend 24) ((_ extract 7 0) (bvadd ((_ zero_extend 24) ULTIMATE.start_main_~y~0) ((_ zero_extend 24) ((_ extract 7 0) (bvshl (_ bv1 32) ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse6 (_ bv1 32)))))))))) ((_ zero_extend 24) ULTIMATE.start_main_~x~0)) .cse7)) (and .cse4 .cse3 .cse0 (= (_ bv2 8) ULTIMATE.start_main_~c~0)) (and .cse3 .cse1 .cse0 (= (_ bv4 8) ULTIMATE.start_main_~c~0)) (and (= (bvadd ULTIMATE.start_main_~bit~0 (_ bv224 8)) (_ bv0 8)) .cse5 .cse0 (= (_ bv6 8) ULTIMATE.start_main_~c~0))))) [2019-11-20 10:19:49,647 INFO L444 ceAbstractionStarter]: For program point L21-3(lines 21 28) no Hoare annotation was computed. [2019-11-20 10:19:49,647 INFO L444 ceAbstractionStarter]: For program point L5(lines 5 7) no Hoare annotation was computed. [2019-11-20 10:19:49,647 INFO L447 ceAbstractionStarter]: At program point L5-2(lines 4 9) the Hoare annotation is: true [2019-11-20 10:19:49,647 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-20 10:19:49,647 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-20 10:19:49,647 INFO L444 ceAbstractionStarter]: For program point L24(lines 24 26) no Hoare annotation was computed. [2019-11-20 10:19:49,648 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2019-11-20 10:19:49,648 INFO L444 ceAbstractionStarter]: For program point L24-2(lines 24 26) no Hoare annotation was computed. [2019-11-20 10:19:49,648 INFO L444 ceAbstractionStarter]: For program point L6(line 6) no Hoare annotation was computed. [2019-11-20 10:19:49,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 10:19:49 BoogieIcfgContainer [2019-11-20 10:19:49,663 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 10:19:49,663 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 10:19:49,663 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 10:19:49,663 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 10:19:49,664 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:19:40" (3/4) ... [2019-11-20 10:19:49,667 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-20 10:19:49,691 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-11-20 10:19:49,691 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-20 10:19:49,729 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_80c6f61d-4a57-4795-8d9a-a179ee6ac149/bin/uautomizer/witness.graphml [2019-11-20 10:19:49,730 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 10:19:49,731 INFO L168 Benchmark]: Toolchain (without parser) took 9510.52 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 249.6 MB). Free memory was 960.4 MB in the beginning and 1.2 GB in the end (delta: -259.8 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 10:19:49,731 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 10:19:49,732 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.12 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-20 10:19:49,732 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.75 ms. Allocated memory is still 1.0 GB. Free memory is still 949.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 10:19:49,733 INFO L168 Benchmark]: Boogie Preprocessor took 96.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 944.3 MB in the beginning and 1.1 GB in the end (delta: -191.2 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-20 10:19:49,733 INFO L168 Benchmark]: RCFGBuilder took 234.03 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. [2019-11-20 10:19:49,734 INFO L168 Benchmark]: TraceAbstraction took 8811.22 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 103.8 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -109.5 MB). Peak memory consumption was 363.5 MB. Max. memory is 11.5 GB. [2019-11-20 10:19:49,734 INFO L168 Benchmark]: Witness Printer took 66.72 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 11.5 GB. [2019-11-20 10:19:49,736 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 258.12 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 35.75 ms. Allocated memory is still 1.0 GB. Free memory is still 949.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 96.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 944.3 MB in the beginning and 1.1 GB in the end (delta: -191.2 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 234.03 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 8811.22 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 103.8 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -109.5 MB). Peak memory consumption was 363.5 MB. Max. memory is 11.5 GB. * Witness Printer took 66.72 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 4]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: ((((((((0bv8 == c && 0bv8 == y) && 37bv8 == x) || ((5bv8 == y && 37bv8 == x && 3bv8 == c) && !(0bv32 == ~zero_extendFrom8To32(bit)))) || (((bit == 0bv8 && 5bv8 == y) && 37bv8 == x) && 5bv8 == c)) || (((1bv8 == y && 1bv8 == c) && 37bv8 == x) && !(0bv32 == ~zero_extendFrom8To32(bit)))) || ((((37bv8 == y && 37bv8 == x) && !~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]), 8bv32)) && ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(y), ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]), 1bv32)[7:0]))[7:0]))[7:0]) == ~zero_extendFrom8To32(x)) && 0bv32 == ~zero_extendFrom8To32(bit))) || (((1bv8 == y && bit == 0bv8) && 37bv8 == x) && 2bv8 == c)) || (((bit == 0bv8 && 5bv8 == y) && 37bv8 == x) && 4bv8 == c)) || (((~bvadd64(bit, 224bv8) == 0bv8 && 37bv8 == y) && 37bv8 == x) && 6bv8 == c) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Result: SAFE, OverallTime: 8.7s, OverallIterations: 8, TraceHistogramMax: 8, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, HoareTripleCheckerStatistics: 64 SDtfs, 317 SDslu, 211 SDs, 0 SdLazy, 777 SolverSat, 140 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 283 GetRequests, 164 SyntacticMatches, 3 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 49 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 19 NumberOfFragments, 140 HoareAnnotationTreeSize, 3 FomulaSimplifications, 518 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 641 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 130 NumberOfCodeBlocks, 118 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 244 ConstructedInterpolants, 17 QuantifiedInterpolants, 74076 SizeOfPredicates, 27 NumberOfNonLiveVariables, 224 ConjunctsInSsa, 62 ConjunctsInUnsatCore, 16 InterpolantComputations, 4 PerfectInterpolantSequences, 158/510 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...