./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/verifythis/elimination_max_rec_onepoint.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_98fbec7d-e599-4d8c-859b-eecaabea7ee4/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_98fbec7d-e599-4d8c-859b-eecaabea7ee4/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_98fbec7d-e599-4d8c-859b-eecaabea7ee4/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_98fbec7d-e599-4d8c-859b-eecaabea7ee4/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/verifythis/elimination_max_rec_onepoint.c -s /tmp/vcloud-vcloud-master/worker/run_dir_98fbec7d-e599-4d8c-859b-eecaabea7ee4/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_98fbec7d-e599-4d8c-859b-eecaabea7ee4/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f1dcdcb191cc3a70c9cb7bce226f0263f581cc07 ................................................................................................................................................................................................................................................................................................. 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_98fbec7d-e599-4d8c-859b-eecaabea7ee4/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_98fbec7d-e599-4d8c-859b-eecaabea7ee4/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_98fbec7d-e599-4d8c-859b-eecaabea7ee4/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_98fbec7d-e599-4d8c-859b-eecaabea7ee4/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/verifythis/elimination_max_rec_onepoint.c -s /tmp/vcloud-vcloud-master/worker/run_dir_98fbec7d-e599-4d8c-859b-eecaabea7ee4/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_98fbec7d-e599-4d8c-859b-eecaabea7ee4/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f1dcdcb191cc3a70c9cb7bce226f0263f581cc07 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 16:42:37,193 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 16:42:37,195 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 16:42:37,203 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 16:42:37,203 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 16:42:37,204 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 16:42:37,204 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 16:42:37,206 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 16:42:37,207 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 16:42:37,208 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 16:42:37,209 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 16:42:37,209 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 16:42:37,210 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 16:42:37,210 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 16:42:37,211 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 16:42:37,212 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 16:42:37,212 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 16:42:37,213 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 16:42:37,215 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 16:42:37,216 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 16:42:37,217 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 16:42:37,218 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 16:42:37,219 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 16:42:37,219 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 16:42:37,221 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 16:42:37,221 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 16:42:37,221 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 16:42:37,222 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 16:42:37,222 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 16:42:37,223 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 16:42:37,223 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 16:42:37,223 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 16:42:37,224 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 16:42:37,224 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 16:42:37,225 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 16:42:37,225 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 16:42:37,225 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 16:42:37,225 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 16:42:37,225 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 16:42:37,226 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 16:42:37,226 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 16:42:37,227 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_98fbec7d-e599-4d8c-859b-eecaabea7ee4/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 16:42:37,237 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 16:42:37,237 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 16:42:37,238 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 16:42:37,238 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 16:42:37,238 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 16:42:37,238 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 16:42:37,238 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 16:42:37,239 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 16:42:37,239 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 16:42:37,239 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 16:42:37,239 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 16:42:37,239 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 16:42:37,239 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 16:42:37,239 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 16:42:37,239 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 16:42:37,240 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 16:42:37,240 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 16:42:37,240 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 16:42:37,240 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 16:42:37,240 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 16:42:37,241 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 16:42:37,241 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 16:42:37,241 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 16:42:37,241 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 16:42:37,241 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 16:42:37,241 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 16:42:37,241 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 16:42:37,241 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 16:42:37,241 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 16:42:37,241 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 16:42:37,242 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 16:42:37,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 16:42:37,242 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 16:42:37,242 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 16:42:37,242 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 16:42:37,242 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 16:42:37,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 16:42:37,242 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 16:42:37,242 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 16:42:37,242 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 16:42:37,243 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_98fbec7d-e599-4d8c-859b-eecaabea7ee4/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1dcdcb191cc3a70c9cb7bce226f0263f581cc07 [2019-12-07 16:42:37,341 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 16:42:37,351 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 16:42:37,354 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 16:42:37,355 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 16:42:37,355 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 16:42:37,356 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_98fbec7d-e599-4d8c-859b-eecaabea7ee4/bin/utaipan/../../sv-benchmarks/c/verifythis/elimination_max_rec_onepoint.c [2019-12-07 16:42:37,397 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_98fbec7d-e599-4d8c-859b-eecaabea7ee4/bin/utaipan/data/5c2ae860a/51a3f44d7c194b45bd5cc434d7a997c9/FLAGd9cf57c47 [2019-12-07 16:42:37,804 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 16:42:37,804 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_98fbec7d-e599-4d8c-859b-eecaabea7ee4/sv-benchmarks/c/verifythis/elimination_max_rec_onepoint.c [2019-12-07 16:42:37,808 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_98fbec7d-e599-4d8c-859b-eecaabea7ee4/bin/utaipan/data/5c2ae860a/51a3f44d7c194b45bd5cc434d7a997c9/FLAGd9cf57c47 [2019-12-07 16:42:37,817 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_98fbec7d-e599-4d8c-859b-eecaabea7ee4/bin/utaipan/data/5c2ae860a/51a3f44d7c194b45bd5cc434d7a997c9 [2019-12-07 16:42:37,819 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 16:42:37,820 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 16:42:37,821 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 16:42:37,821 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 16:42:37,823 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 16:42:37,824 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 04:42:37" (1/1) ... [2019-12-07 16:42:37,826 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e2d4e1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:42:37, skipping insertion in model container [2019-12-07 16:42:37,826 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 04:42:37" (1/1) ... [2019-12-07 16:42:37,831 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 16:42:37,843 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 16:42:37,980 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 16:42:37,991 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 16:42:38,007 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 16:42:38,018 INFO L208 MainTranslator]: Completed translation [2019-12-07 16:42:38,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:42:38 WrapperNode [2019-12-07 16:42:38,019 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 16:42:38,019 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 16:42:38,019 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 16:42:38,019 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 16:42:38,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:42:38" (1/1) ... [2019-12-07 16:42:38,031 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:42:38" (1/1) ... [2019-12-07 16:42:38,051 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 16:42:38,051 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 16:42:38,051 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 16:42:38,051 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 16:42:38,057 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:42:38" (1/1) ... [2019-12-07 16:42:38,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:42:38" (1/1) ... [2019-12-07 16:42:38,059 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:42:38" (1/1) ... [2019-12-07 16:42:38,059 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:42:38" (1/1) ... [2019-12-07 16:42:38,064 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:42:38" (1/1) ... [2019-12-07 16:42:38,065 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:42:38" (1/1) ... [2019-12-07 16:42:38,066 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:42:38" (1/1) ... [2019-12-07 16:42:38,068 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 16:42:38,068 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 16:42:38,068 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 16:42:38,068 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 16:42:38,069 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:42:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_98fbec7d-e599-4d8c-859b-eecaabea7ee4/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 16:42:38,107 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-12-07 16:42:38,107 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2019-12-07 16:42:38,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-12-07 16:42:38,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 16:42:38,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 16:42:38,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 16:42:38,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 16:42:38,309 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 16:42:38,309 INFO L287 CfgBuilder]: Removed 12 assume(true) statements. [2019-12-07 16:42:38,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:42:38 BoogieIcfgContainer [2019-12-07 16:42:38,310 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 16:42:38,310 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 16:42:38,311 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 16:42:38,312 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 16:42:38,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 04:42:37" (1/3) ... [2019-12-07 16:42:38,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@272d666a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 04:42:38, skipping insertion in model container [2019-12-07 16:42:38,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:42:38" (2/3) ... [2019-12-07 16:42:38,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@272d666a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 04:42:38, skipping insertion in model container [2019-12-07 16:42:38,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:42:38" (3/3) ... [2019-12-07 16:42:38,314 INFO L109 eAbstractionObserver]: Analyzing ICFG elimination_max_rec_onepoint.c [2019-12-07 16:42:38,321 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 16:42:38,325 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-12-07 16:42:38,333 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-12-07 16:42:38,347 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 16:42:38,347 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 16:42:38,347 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 16:42:38,347 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 16:42:38,347 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 16:42:38,348 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 16:42:38,348 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 16:42:38,348 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 16:42:38,358 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2019-12-07 16:42:38,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-07 16:42:38,362 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:42:38,362 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-07 16:42:38,363 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, checkErr1ASSERT_VIOLATIONERROR_FUNCTION, checkErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:42:38,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:42:38,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1699284321, now seen corresponding path program 1 times [2019-12-07 16:42:38,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 16:42:38,372 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596998474] [2019-12-07 16:42:38,372 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:42:38,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:42:38,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:42:38,510 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596998474] [2019-12-07 16:42:38,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:42:38,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-07 16:42:38,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761177981] [2019-12-07 16:42:38,515 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 16:42:38,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 16:42:38,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 16:42:38,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 16:42:38,527 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 5 states. [2019-12-07 16:42:38,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:42:38,619 INFO L93 Difference]: Finished difference Result 58 states and 72 transitions. [2019-12-07 16:42:38,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 16:42:38,620 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2019-12-07 16:42:38,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:42:38,629 INFO L225 Difference]: With dead ends: 58 [2019-12-07 16:42:38,629 INFO L226 Difference]: Without dead ends: 36 [2019-12-07 16:42:38,632 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-12-07 16:42:38,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-12-07 16:42:38,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 30. [2019-12-07 16:42:38,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-12-07 16:42:38,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2019-12-07 16:42:38,665 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 6 [2019-12-07 16:42:38,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:42:38,665 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2019-12-07 16:42:38,665 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 16:42:38,665 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2019-12-07 16:42:38,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 16:42:38,666 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:42:38,666 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:42:38,666 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, checkErr1ASSERT_VIOLATIONERROR_FUNCTION, checkErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:42:38,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:42:38,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1394597224, now seen corresponding path program 1 times [2019-12-07 16:42:38,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 16:42:38,666 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727678713] [2019-12-07 16:42:38,667 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:42:38,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:42:38,705 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Undeclared function symbol (const Int) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.term(NoopScript.java:478) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.term(WrapperScript.java:250) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.term(WrapperScript.java:250) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.SmtUtils.termWithLocalSimplification(SmtUtils.java:1315) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.SmtUtils.termWithLocalSimplification(SmtUtils.java:1196) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.TermTransferrer.convertApplicationTerm(TermTransferrer.java:182) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$BuildApplicationTerm.walk(TermTransformer.java:339) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:272) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computePredicates(NestedInterpolantsBuilder.java:573) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:171) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:269) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:205) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:107) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:139) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-12-07 16:42:38,709 INFO L168 Benchmark]: Toolchain (without parser) took 888.47 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.0 MB). Free memory was 938.0 MB in the beginning and 1.0 GB in the end (delta: -85.5 MB). Peak memory consumption was 21.4 MB. Max. memory is 11.5 GB. [2019-12-07 16:42:38,709 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 955.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:42:38,710 INFO L168 Benchmark]: CACSL2BoogieTranslator took 198.19 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.0 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -163.8 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-12-07 16:42:38,710 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.82 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:42:38,710 INFO L168 Benchmark]: Boogie Preprocessor took 17.04 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 16:42:38,711 INFO L168 Benchmark]: RCFGBuilder took 241.66 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 11.5 GB. [2019-12-07 16:42:38,711 INFO L168 Benchmark]: TraceAbstraction took 396.73 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 45.7 MB). Peak memory consumption was 45.7 MB. Max. memory is 11.5 GB. [2019-12-07 16:42:38,714 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 955.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 198.19 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.0 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -163.8 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.82 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.04 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 241.66 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 396.73 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 45.7 MB). Peak memory consumption was 45.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Undeclared function symbol (const Int) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Undeclared function symbol (const Int): de.uni_freiburg.informatik.ultimate.logic.NoopScript.term(NoopScript.java:478) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-f470102 [2019-12-07 16:42:40,037 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 16:42:40,039 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 16:42:40,046 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 16:42:40,047 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 16:42:40,047 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 16:42:40,048 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 16:42:40,050 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 16:42:40,051 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 16:42:40,052 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 16:42:40,052 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 16:42:40,053 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 16:42:40,053 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 16:42:40,054 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 16:42:40,055 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 16:42:40,056 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 16:42:40,056 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 16:42:40,057 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 16:42:40,058 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 16:42:40,060 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 16:42:40,061 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 16:42:40,062 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 16:42:40,062 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 16:42:40,063 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 16:42:40,065 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 16:42:40,065 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 16:42:40,065 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 16:42:40,066 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 16:42:40,066 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 16:42:40,067 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 16:42:40,067 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 16:42:40,067 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 16:42:40,068 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 16:42:40,068 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 16:42:40,069 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 16:42:40,069 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 16:42:40,070 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 16:42:40,070 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 16:42:40,070 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 16:42:40,071 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 16:42:40,071 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 16:42:40,072 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_98fbec7d-e599-4d8c-859b-eecaabea7ee4/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-12-07 16:42:40,082 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 16:42:40,082 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 16:42:40,082 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 16:42:40,083 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 16:42:40,083 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 16:42:40,083 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 16:42:40,083 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 16:42:40,083 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 16:42:40,083 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 16:42:40,084 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 16:42:40,084 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 16:42:40,084 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 16:42:40,084 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 16:42:40,084 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 16:42:40,084 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 16:42:40,085 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 16:42:40,085 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 16:42:40,085 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 16:42:40,085 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 16:42:40,085 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 16:42:40,085 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 16:42:40,085 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 16:42:40,085 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 16:42:40,086 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 16:42:40,086 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 16:42:40,086 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 16:42:40,086 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 16:42:40,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 16:42:40,086 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 16:42:40,086 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 16:42:40,087 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 16:42:40,087 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-12-07 16:42:40,087 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 16:42:40,087 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 16:42:40,087 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 16:42:40,087 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 16:42:40,087 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_98fbec7d-e599-4d8c-859b-eecaabea7ee4/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1dcdcb191cc3a70c9cb7bce226f0263f581cc07 [2019-12-07 16:42:40,250 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 16:42:40,259 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 16:42:40,261 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 16:42:40,262 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 16:42:40,263 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 16:42:40,263 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_98fbec7d-e599-4d8c-859b-eecaabea7ee4/bin/utaipan/../../sv-benchmarks/c/verifythis/elimination_max_rec_onepoint.c [2019-12-07 16:42:40,302 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_98fbec7d-e599-4d8c-859b-eecaabea7ee4/bin/utaipan/data/f1fbc359e/6b15bbced8ea45668c1d07f8de2b01d2/FLAG5b8a555c2 [2019-12-07 16:42:40,728 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 16:42:40,729 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_98fbec7d-e599-4d8c-859b-eecaabea7ee4/sv-benchmarks/c/verifythis/elimination_max_rec_onepoint.c [2019-12-07 16:42:40,733 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_98fbec7d-e599-4d8c-859b-eecaabea7ee4/bin/utaipan/data/f1fbc359e/6b15bbced8ea45668c1d07f8de2b01d2/FLAG5b8a555c2 [2019-12-07 16:42:41,108 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_98fbec7d-e599-4d8c-859b-eecaabea7ee4/bin/utaipan/data/f1fbc359e/6b15bbced8ea45668c1d07f8de2b01d2 [2019-12-07 16:42:41,114 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 16:42:41,115 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 16:42:41,115 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 16:42:41,115 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 16:42:41,117 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 16:42:41,118 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 04:42:41" (1/1) ... [2019-12-07 16:42:41,120 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2426e981 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:42:41, skipping insertion in model container [2019-12-07 16:42:41,120 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 04:42:41" (1/1) ... [2019-12-07 16:42:41,124 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 16:42:41,136 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 16:42:41,247 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 16:42:41,255 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 16:42:41,270 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 16:42:41,281 INFO L208 MainTranslator]: Completed translation [2019-12-07 16:42:41,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:42:41 WrapperNode [2019-12-07 16:42:41,282 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 16:42:41,282 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 16:42:41,282 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 16:42:41,283 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 16:42:41,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:42:41" (1/1) ... [2019-12-07 16:42:41,294 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:42:41" (1/1) ... [2019-12-07 16:42:41,338 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 16:42:41,338 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 16:42:41,338 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 16:42:41,338 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 16:42:41,344 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:42:41" (1/1) ... [2019-12-07 16:42:41,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:42:41" (1/1) ... [2019-12-07 16:42:41,347 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:42:41" (1/1) ... [2019-12-07 16:42:41,347 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:42:41" (1/1) ... [2019-12-07 16:42:41,352 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:42:41" (1/1) ... [2019-12-07 16:42:41,353 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:42:41" (1/1) ... [2019-12-07 16:42:41,354 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:42:41" (1/1) ... [2019-12-07 16:42:41,356 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 16:42:41,357 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 16:42:41,357 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 16:42:41,357 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 16:42:41,357 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:42:41" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_98fbec7d-e599-4d8c-859b-eecaabea7ee4/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 16:42:41,396 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-12-07 16:42:41,396 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2019-12-07 16:42:41,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-12-07 16:42:41,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-12-07 16:42:41,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 16:42:41,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 16:42:41,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 16:42:41,571 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 16:42:41,572 INFO L287 CfgBuilder]: Removed 12 assume(true) statements. [2019-12-07 16:42:41,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:42:41 BoogieIcfgContainer [2019-12-07 16:42:41,573 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 16:42:41,574 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 16:42:41,574 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 16:42:41,575 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 16:42:41,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 04:42:41" (1/3) ... [2019-12-07 16:42:41,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7315cb6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 04:42:41, skipping insertion in model container [2019-12-07 16:42:41,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:42:41" (2/3) ... [2019-12-07 16:42:41,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7315cb6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 04:42:41, skipping insertion in model container [2019-12-07 16:42:41,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:42:41" (3/3) ... [2019-12-07 16:42:41,578 INFO L109 eAbstractionObserver]: Analyzing ICFG elimination_max_rec_onepoint.c [2019-12-07 16:42:41,584 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 16:42:41,588 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-12-07 16:42:41,595 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-12-07 16:42:41,610 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 16:42:41,610 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 16:42:41,610 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 16:42:41,610 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 16:42:41,610 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 16:42:41,610 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 16:42:41,610 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 16:42:41,610 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 16:42:41,620 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2019-12-07 16:42:41,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 16:42:41,624 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:42:41,624 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:42:41,625 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, checkErr1ASSERT_VIOLATIONERROR_FUNCTION, checkErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:42:41,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:42:41,628 INFO L82 PathProgramCache]: Analyzing trace with hash 129758039, now seen corresponding path program 1 times [2019-12-07 16:42:41,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 16:42:41,636 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1241965003] [2019-12-07 16:42:41,636 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_98fbec7d-e599-4d8c-859b-eecaabea7ee4/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-12-07 16:42:41,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:42:41,695 INFO L264 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 12 conjunts are in the unsatisfiable core [2019-12-07 16:42:41,698 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:42:41,814 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 16:42:41,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:42:41,844 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 16:42:41,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:42:41,998 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1241965003] [2019-12-07 16:42:41,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:42:41,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2019-12-07 16:42:42,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359111920] [2019-12-07 16:42:42,003 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-07 16:42:42,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 16:42:42,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-07 16:42:42,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-12-07 16:42:42,014 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 10 states. [2019-12-07 16:42:43,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:42:43,035 INFO L93 Difference]: Finished difference Result 82 states and 104 transitions. [2019-12-07 16:42:43,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-12-07 16:42:43,037 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 8 [2019-12-07 16:42:43,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:42:43,045 INFO L225 Difference]: With dead ends: 82 [2019-12-07 16:42:43,045 INFO L226 Difference]: Without dead ends: 55 [2019-12-07 16:42:43,049 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2019-12-07 16:42:43,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-12-07 16:42:43,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 45. [2019-12-07 16:42:43,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-12-07 16:42:43,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2019-12-07 16:42:43,085 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 8 [2019-12-07 16:42:43,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:42:43,085 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2019-12-07 16:42:43,085 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-07 16:42:43,085 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2019-12-07 16:42:43,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 16:42:43,086 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:42:43,086 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:42:43,287 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 16:42:43,288 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, checkErr1ASSERT_VIOLATIONERROR_FUNCTION, checkErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:42:43,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:42:43,289 INFO L82 PathProgramCache]: Analyzing trace with hash 145459632, now seen corresponding path program 1 times [2019-12-07 16:42:43,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 16:42:43,292 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1043795726] [2019-12-07 16:42:43,292 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_98fbec7d-e599-4d8c-859b-eecaabea7ee4/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-12-07 16:42:43,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:42:43,352 INFO L264 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 17 conjunts are in the unsatisfiable core [2019-12-07 16:42:43,353 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:42:43,445 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 16:42:43,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:42:43,466 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 16:42:43,512 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 16:42:43,513 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 20 [2019-12-07 16:42:43,513 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 16:42:43,515 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 16:42:43,518 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 16:42:43,518 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 16:42:43,518 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:11 [2019-12-07 16:42:43,647 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 16:42:43,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:42:43,793 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1043795726] [2019-12-07 16:42:43,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:42:43,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 7] imperfect sequences [] total 13 [2019-12-07 16:42:43,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721208764] [2019-12-07 16:42:43,795 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-12-07 16:42:43,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 16:42:43,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-12-07 16:42:43,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2019-12-07 16:42:43,796 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand 13 states. [2019-12-07 16:42:44,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:42:44,101 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2019-12-07 16:42:44,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 16:42:44,102 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 11 [2019-12-07 16:42:44,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:42:44,104 INFO L225 Difference]: With dead ends: 55 [2019-12-07 16:42:44,104 INFO L226 Difference]: Without dead ends: 49 [2019-12-07 16:42:44,105 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2019-12-07 16:42:44,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-12-07 16:42:44,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2019-12-07 16:42:44,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-12-07 16:42:44,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2019-12-07 16:42:44,115 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 11 [2019-12-07 16:42:44,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:42:44,116 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2019-12-07 16:42:44,116 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-12-07 16:42:44,116 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2019-12-07 16:42:44,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-07 16:42:44,117 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:42:44,117 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:42:44,318 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-07 16:42:44,319 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, checkErr1ASSERT_VIOLATIONERROR_FUNCTION, checkErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:42:44,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:42:44,319 INFO L82 PathProgramCache]: Analyzing trace with hash 728832184, now seen corresponding path program 1 times [2019-12-07 16:42:44,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 16:42:44,321 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1312168993] [2019-12-07 16:42:44,322 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_98fbec7d-e599-4d8c-859b-eecaabea7ee4/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2019-12-07 16:42:44,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:42:44,427 INFO L264 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 30 conjunts are in the unsatisfiable core [2019-12-07 16:42:44,429 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:42:45,099 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 16:42:45,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:42:45,178 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 16:42:45,476 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 16:42:53,760 WARN L192 SmtUtils]: Spent 4.06 s on a formula simplification that was a NOOP. DAG size: 27 [2019-12-07 16:43:05,827 WARN L192 SmtUtils]: Spent 4.38 s on a formula simplification that was a NOOP. DAG size: 41 [2019-12-07 16:43:06,110 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2019-12-07 16:43:06,111 INFO L343 Elim1Store]: treesize reduction 17, result has 83.0 percent of original size [2019-12-07 16:43:06,111 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 90 [2019-12-07 16:43:06,111 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 16:43:06,112 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 16:43:06,112 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 16:43:06,113 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 16:43:06,113 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 16:43:06,118 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 16:43:06,118 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 16:43:06,118 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 16:43:06,120 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 16:43:06,120 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 16:43:06,120 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 16:43:06,121 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 16:43:06,124 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 16:43:06,127 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 16:43:06,127 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 16:43:06,128 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 16:43:06,131 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 16:43:06,132 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 16:43:06,132 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 16:43:06,134 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 16:43:06,135 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 16:43:06,137 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2019-12-07 16:43:06,253 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 23 [2019-12-07 16:43:06,254 INFO L614 ElimStorePlain]: treesize reduction 98, result has 36.8 percent of original size [2019-12-07 16:43:06,254 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 16:43:06,254 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:47, output treesize:57 [2019-12-07 16:43:07,001 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:43:07,002 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1312168993] [2019-12-07 16:43:07,002 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1571164808] [2019-12-07 16:43:07,002 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_98fbec7d-e599-4d8c-859b-eecaabea7ee4/bin/utaipan/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-12-07 16:43:07,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:43:07,075 INFO L264 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 16:43:07,076 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:43:07,083 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2019-12-07 16:43:07,083 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 16:43:07,085 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 16:43:07,085 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 16:43:07,086 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:7, output treesize:6 [2019-12-07 16:43:14,955 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_check_~a.base_BEFORE_CALL_3 (_ BitVec 32))) (= ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)) (select |c_#memory_int| v_check_~a.base_BEFORE_CALL_3))) is different from true [2019-12-07 16:43:17,051 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 16:43:17,054 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2019-12-07 16:43:17,054 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 16:44:34,038 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:44:34,038 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589125271] [2019-12-07 16:44:34,039 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_98fbec7d-e599-4d8c-859b-eecaabea7ee4/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 16:44:34,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:44:34,092 INFO L264 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2019-12-07 16:44:34,094 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:44:34,098 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2019-12-07 16:44:34,098 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 16:44:34,100 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 16:44:34,100 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 16:44:34,100 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:7, output treesize:6 [2019-12-07 16:44:36,109 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_check_~a.base_BEFORE_CALL_5 (_ BitVec 32))) (= ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)) (select |c_#memory_int| v_check_~a.base_BEFORE_CALL_5))) is different from true [2019-12-07 16:44:38,207 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 16:44:38,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2019-12-07 16:44:38,211 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 16:46:28,851 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:46:28,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2019-12-07 16:46:28,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 8, 7, 8, 7] total 38 [2019-12-07 16:46:28,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639312994] [2019-12-07 16:46:28,852 INFO L442 AbstractCegarLoop]: Interpolant automaton has 38 states [2019-12-07 16:46:28,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 16:46:28,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2019-12-07 16:46:28,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1048, Unknown=98, NotChecked=138, Total=1406 [2019-12-07 16:46:28,853 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 38 states. [2019-12-07 16:46:29,803 WARN L192 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 32 [2019-12-07 16:46:30,069 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 34 [2019-12-07 16:46:30,385 WARN L192 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 37 [2019-12-07 16:46:32,869 WARN L192 SmtUtils]: Spent 2.35 s on a formula simplification. DAG size of input: 66 DAG size of output: 48 [2019-12-07 16:46:39,158 WARN L192 SmtUtils]: Spent 4.07 s on a formula simplification. DAG size of input: 43 DAG size of output: 35 [2019-12-07 16:46:39,722 WARN L192 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 19 [2019-12-07 16:46:41,024 WARN L192 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2019-12-07 16:46:41,321 WARN L192 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2019-12-07 16:46:42,286 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2019-12-07 16:46:42,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:46:42,453 INFO L93 Difference]: Finished difference Result 98 states and 117 transitions. [2019-12-07 16:46:42,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-12-07 16:46:42,453 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 17 [2019-12-07 16:46:42,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:46:42,454 INFO L225 Difference]: With dead ends: 98 [2019-12-07 16:46:42,454 INFO L226 Difference]: Without dead ends: 62 [2019-12-07 16:46:42,456 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 62 SyntacticMatches, 4 SemanticMatches, 54 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 532 ImplicationChecksByTransitivity, 236.1s TimeCoverageRelationStatistics Valid=449, Invalid=2323, Unknown=98, NotChecked=210, Total=3080 [2019-12-07 16:46:42,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2019-12-07 16:46:42,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 43. [2019-12-07 16:46:42,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-12-07 16:46:42,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2019-12-07 16:46:42,464 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 17 [2019-12-07 16:46:42,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:46:42,464 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2019-12-07 16:46:42,464 INFO L463 AbstractCegarLoop]: Interpolant automaton has 38 states. [2019-12-07 16:46:42,465 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2019-12-07 16:46:42,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-12-07 16:46:42,465 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:46:42,465 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-12-07 16:46:43,067 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3,5 cvc4 --incremental --print-success --lang smt --rewrite-divk,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 16:46:43,069 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, checkErr1ASSERT_VIOLATIONERROR_FUNCTION, checkErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:46:43,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:46:43,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1091112583, now seen corresponding path program 1 times [2019-12-07 16:46:43,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 16:46:43,072 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1256620132] [2019-12-07 16:46:43,072 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_98fbec7d-e599-4d8c-859b-eecaabea7ee4/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2019-12-07 16:46:43,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:46:43,144 INFO L264 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 30 conjunts are in the unsatisfiable core [2019-12-07 16:46:43,145 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:46:43,864 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 16:46:43,901 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:46:43,902 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 16:46:44,278 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 16:46:44,520 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:46:44,520 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1256620132] [2019-12-07 16:46:44,520 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [255294985] [2019-12-07 16:46:44,520 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_98fbec7d-e599-4d8c-859b-eecaabea7ee4/bin/utaipan/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-12-07 16:46:44,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:46:44,648 INFO L264 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 29 conjunts are in the unsatisfiable core [2019-12-07 16:46:44,650 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:46:45,043 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 16:46:45,047 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:46:45,048 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 16:46:45,368 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 16:46:45,592 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:46:45,592 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487228761] [2019-12-07 16:46:45,593 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_98fbec7d-e599-4d8c-859b-eecaabea7ee4/bin/utaipan/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 16:46:45,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:46:45,643 INFO L264 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 29 conjunts are in the unsatisfiable core [2019-12-07 16:46:45,645 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:46:46,566 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 16:46:46,570 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:46:46,570 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 16:46:46,572 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 16:46:46,576 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-07 16:46:46,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2019-12-07 16:46:46,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 12, 10, 12, 7] total 35 [2019-12-07 16:46:46,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105254226] [2019-12-07 16:46:46,577 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2019-12-07 16:46:46,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 16:46:46,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2019-12-07 16:46:46,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=959, Unknown=0, NotChecked=0, Total=1190 [2019-12-07 16:46:46,579 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 35 states. [2019-12-07 16:46:47,316 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 33 [2019-12-07 16:46:47,525 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2019-12-07 16:46:47,844 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 29 [2019-12-07 16:46:48,070 WARN L192 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2019-12-07 16:46:48,361 WARN L192 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 32 [2019-12-07 16:46:48,559 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 32 [2019-12-07 16:46:49,724 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 33 [2019-12-07 16:46:50,162 WARN L192 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 29 [2019-12-07 16:46:50,775 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2019-12-07 16:46:51,053 WARN L192 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 32 [2019-12-07 16:46:52,401 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 28 [2019-12-07 16:46:53,129 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 29 [2019-12-07 16:46:53,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:46:53,677 INFO L93 Difference]: Finished difference Result 93 states and 113 transitions. [2019-12-07 16:46:53,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2019-12-07 16:46:53,679 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 20 [2019-12-07 16:46:53,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:46:53,680 INFO L225 Difference]: With dead ends: 93 [2019-12-07 16:46:53,680 INFO L226 Difference]: Without dead ends: 91 [2019-12-07 16:46:53,682 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 78 SyntacticMatches, 13 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 1496 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=1104, Invalid=3588, Unknown=0, NotChecked=0, Total=4692 [2019-12-07 16:46:53,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2019-12-07 16:46:53,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 68. [2019-12-07 16:46:53,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2019-12-07 16:46:53,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 79 transitions. [2019-12-07 16:46:53,691 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 79 transitions. Word has length 20 [2019-12-07 16:46:53,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:46:53,691 INFO L462 AbstractCegarLoop]: Abstraction has 68 states and 79 transitions. [2019-12-07 16:46:53,691 INFO L463 AbstractCegarLoop]: Interpolant automaton has 35 states. [2019-12-07 16:46:53,691 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 79 transitions. [2019-12-07 16:46:53,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-12-07 16:46:53,692 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:46:53,692 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:46:54,293 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 mathsat -unsat_core_generation=3,8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-12-07 16:46:54,294 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, checkErr1ASSERT_VIOLATIONERROR_FUNCTION, checkErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:46:54,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:46:54,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1618154636, now seen corresponding path program 1 times [2019-12-07 16:46:54,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 16:46:54,297 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [411153164] [2019-12-07 16:46:54,297 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_98fbec7d-e599-4d8c-859b-eecaabea7ee4/bin/utaipan/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2019-12-07 16:46:54,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:46:54,356 INFO L264 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 19 conjunts are in the unsatisfiable core [2019-12-07 16:46:54,357 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:46:54,405 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 16:46:54,497 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 16:46:54,524 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 16:46:54,524 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 16:46:54,823 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 16:46:54,921 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 16:46:54,921 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 116 [2019-12-07 16:46:54,921 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 16:46:54,922 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-12-07 16:46:54,922 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 16:46:54,923 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-12-07 16:46:54,923 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-12-07 16:46:54,924 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-12-07 16:46:54,924 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-12-07 16:46:54,925 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 16:46:54,925 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-12-07 16:46:54,926 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-12-07 16:46:54,926 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 16:46:54,927 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 16:46:54,929 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-12-07 16:46:54,929 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 16:46:54,930 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-12-07 16:46:54,931 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-12-07 16:46:54,931 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 16:46:54,931 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-12-07 16:46:54,932 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-12-07 16:46:54,933 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-12-07 16:46:54,933 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-12-07 16:46:54,937 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-12-07 16:46:54,938 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-12-07 16:46:54,938 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 16:46:54,939 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-12-07 16:46:54,942 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-12-07 16:46:54,945 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 16:46:54,946 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-12-07 16:46:54,949 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-12-07 16:46:54,949 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 16:46:54,949 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-12-07 16:46:54,949 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-12-07 16:46:54,951 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-12-07 16:46:54,952 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-12-07 16:46:54,953 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-12-07 16:46:54,953 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-12-07 16:46:54,955 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 16:46:55,466 WARN L192 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 21 [2019-12-07 16:46:55,466 INFO L614 ElimStorePlain]: treesize reduction 441, result has 7.9 percent of original size [2019-12-07 16:46:55,467 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-12-07 16:46:55,467 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-12-07 16:46:55,468 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:40, output treesize:38 [2019-12-07 16:46:55,468 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-12-07 16:46:55,895 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 16:46:55,896 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [411153164] [2019-12-07 16:46:55,896 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1195378161] [2019-12-07 16:46:55,896 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_98fbec7d-e599-4d8c-859b-eecaabea7ee4/bin/utaipan/cvc4 Starting monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-12-07 16:46:55,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:46:55,982 INFO L264 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 16:46:55,983 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:46:55,986 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2019-12-07 16:46:55,986 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 16:46:55,988 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 16:46:55,989 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 16:46:55,989 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:7, output treesize:6 [2019-12-07 16:46:58,070 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ULTIMATE.start_main_~a~0.base_BEFORE_CALL_4 (_ BitVec 32))) (= (select |c_#memory_int| v_ULTIMATE.start_main_~a~0.base_BEFORE_CALL_4) ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)))) is different from true [2019-12-07 16:46:58,119 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 16:46:58,122 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-12-07 16:46:58,122 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 16:47:27,288 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-12-07 16:47:27,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2019-12-07 16:47:27,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [8, 8] total 16 [2019-12-07 16:47:27,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940944884] [2019-12-07 16:47:27,289 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-07 16:47:27,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 16:47:27,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-07 16:47:27,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=163, Unknown=15, NotChecked=26, Total=240 [2019-12-07 16:47:27,289 INFO L87 Difference]: Start difference. First operand 68 states and 79 transitions. Second operand 9 states. [2019-12-07 16:47:31,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:47:31,444 INFO L93 Difference]: Finished difference Result 97 states and 113 transitions. [2019-12-07 16:47:31,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 16:47:31,445 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2019-12-07 16:47:31,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:47:31,445 INFO L225 Difference]: With dead ends: 97 [2019-12-07 16:47:31,445 INFO L226 Difference]: Without dead ends: 46 [2019-12-07 16:47:31,446 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 64 SyntacticMatches, 6 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 36.0s TimeCoverageRelationStatistics Valid=61, Invalid=232, Unknown=17, NotChecked=32, Total=342 [2019-12-07 16:47:31,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-12-07 16:47:31,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 33. [2019-12-07 16:47:31,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-12-07 16:47:31,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2019-12-07 16:47:31,451 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 22 [2019-12-07 16:47:31,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:47:31,451 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2019-12-07 16:47:31,451 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-07 16:47:31,451 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2019-12-07 16:47:31,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-12-07 16:47:31,452 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:47:31,452 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:47:31,853 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3,11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-12-07 16:47:31,854 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, checkErr1ASSERT_VIOLATIONERROR_FUNCTION, checkErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:47:31,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:47:31,855 INFO L82 PathProgramCache]: Analyzing trace with hash 208543003, now seen corresponding path program 1 times [2019-12-07 16:47:31,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 16:47:31,856 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [834967850] [2019-12-07 16:47:31,856 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_98fbec7d-e599-4d8c-859b-eecaabea7ee4/bin/utaipan/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2019-12-07 16:47:31,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:47:31,963 INFO L264 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 39 conjunts are in the unsatisfiable core [2019-12-07 16:47:31,964 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:47:32,632 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 19 [2019-12-07 16:47:33,154 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 16:47:33,215 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:47:33,215 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 16:47:33,729 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 16:47:33,743 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-12-07 16:47:33,743 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [834967850] [2019-12-07 16:47:33,743 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1334033064] [2019-12-07 16:47:33,744 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_98fbec7d-e599-4d8c-859b-eecaabea7ee4/bin/utaipan/cvc4 Starting monitored process 13 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-12-07 16:47:33,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:47:33,852 INFO L264 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 16:47:33,853 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:47:33,856 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2019-12-07 16:47:33,856 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 16:47:33,858 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 16:47:33,858 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 16:47:33,858 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:7, output treesize:6 [2019-12-07 16:47:34,133 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 23 [2019-12-07 16:47:34,133 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 16:47:34,137 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 16:47:34,137 INFO L534 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-12-07 16:47:34,138 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:29, output treesize:21 [2019-12-07 16:47:34,198 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-12-07 16:47:34,198 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 16:48:12,944 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-12-07 16:48:12,944 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310275921] [2019-12-07 16:48:12,945 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_98fbec7d-e599-4d8c-859b-eecaabea7ee4/bin/utaipan/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 16:48:12,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:48:12,990 INFO L264 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 16:48:12,991 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:48:12,994 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2019-12-07 16:48:12,994 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 16:48:12,996 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 16:48:12,996 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 16:48:12,996 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:7, output treesize:6 [2019-12-07 16:48:13,000 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 23 [2019-12-07 16:48:13,000 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 16:48:13,005 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 16:48:13,006 INFO L534 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-12-07 16:48:13,006 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:29, output treesize:21 [2019-12-07 16:48:13,009 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-12-07 16:48:13,009 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 16:48:13,015 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-12-07 16:48:13,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2019-12-07 16:48:13,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 7, 7, 7, 7, 7] total 31 [2019-12-07 16:48:13,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117833035] [2019-12-07 16:48:13,016 INFO L442 AbstractCegarLoop]: Interpolant automaton has 31 states [2019-12-07 16:48:13,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 16:48:13,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2019-12-07 16:48:13,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=811, Unknown=18, NotChecked=0, Total=930 [2019-12-07 16:48:13,017 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 31 states. [2019-12-07 16:48:15,085 WARN L192 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2019-12-07 16:48:15,865 WARN L192 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2019-12-07 16:48:16,202 WARN L192 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2019-12-07 16:48:18,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:48:18,926 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2019-12-07 16:48:18,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-12-07 16:48:18,926 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 26 [2019-12-07 16:48:18,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:48:18,927 INFO L225 Difference]: With dead ends: 40 [2019-12-07 16:48:18,927 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 16:48:18,928 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 118 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 46.0s TimeCoverageRelationStatistics Valid=437, Invalid=2300, Unknown=19, NotChecked=0, Total=2756 [2019-12-07 16:48:18,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 16:48:18,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 16:48:18,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 16:48:18,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 16:48:18,928 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2019-12-07 16:48:18,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:48:18,928 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 16:48:18,928 INFO L463 AbstractCegarLoop]: Interpolant automaton has 31 states. [2019-12-07 16:48:18,929 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 16:48:18,929 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 16:48:19,530 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 cvc4 --incremental --print-success --lang smt --rewrite-divk,12 mathsat -unsat_core_generation=3 [2019-12-07 16:48:19,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 16:48:22,868 WARN L192 SmtUtils]: Spent 3.16 s on a formula simplification. DAG size of input: 154 DAG size of output: 90 [2019-12-07 16:48:27,102 WARN L192 SmtUtils]: Spent 4.23 s on a formula simplification. DAG size of input: 95 DAG size of output: 1 [2019-12-07 16:48:27,104 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 16:48:27,104 INFO L246 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2019-12-07 16:48:27,104 INFO L246 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2019-12-07 16:48:27,104 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 16:48:27,104 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-12-07 16:48:27,104 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2019-12-07 16:48:27,104 INFO L242 CegarLoopResult]: At program point L48(lines 35 49) the Hoare annotation is: (and (bvslt ULTIMATE.start_main_~n~0 (_ bv1073741824 32)) (exists ((ULTIMATE.start_main_~i~0 (_ BitVec 32))) (and (bvslt ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~n~0) (bvsle (_ bv0 32) ULTIMATE.start_main_~i~0)))) [2019-12-07 16:48:27,104 INFO L242 CegarLoopResult]: At program point L42(line 42) the Hoare annotation is: (let ((.cse0 ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)))) (and (= (_ bv0 32) ULTIMATE.start_main_~a~0.offset) (= .cse0 (select |#memory_int| ULTIMATE.start_main_~a~0.base)) (bvslt ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~n~0) (bvsle (_ bv0 32) ULTIMATE.start_main_~i~0) (bvslt ULTIMATE.start_main_~n~0 (_ bv1073741824 32)) (= |ULTIMATE.start_main_#t~malloc11.offset| (_ bv0 32)) (= (select |#memory_int| |ULTIMATE.start_main_#t~malloc11.base|) .cse0))) [2019-12-07 16:48:27,104 INFO L246 CegarLoopResult]: For program point L42-1(line 42) no Hoare annotation was computed. [2019-12-07 16:48:27,104 INFO L246 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2019-12-07 16:48:27,104 INFO L246 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2019-12-07 16:48:27,104 INFO L246 CegarLoopResult]: For program point L5(lines 5 7) no Hoare annotation was computed. [2019-12-07 16:48:27,104 INFO L249 CegarLoopResult]: At program point checkENTRY(lines 11 33) the Hoare annotation is: true [2019-12-07 16:48:27,105 INFO L246 CegarLoopResult]: For program point checkErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2019-12-07 16:48:27,105 INFO L246 CegarLoopResult]: For program point L21(lines 21 22) no Hoare annotation was computed. [2019-12-07 16:48:27,105 INFO L242 CegarLoopResult]: At program point L21-2(lines 21 22) the Hoare annotation is: (let ((.cse14 (bvadd |check_#in~y| (_ bv1 32))) (.cse10 ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32))) (.cse13 (bvadd check_~x (_ bv4294967295 32))) (.cse11 (not (bvslt |check_#in~y| |check_#in~n|))) (.cse12 (not (bvsle (_ bv0 32) |check_#in~x|)))) (let ((.cse2 (and (not (bvsge |check_#in~x| |check_#in~y|)) (or .cse11 .cse12))) (.cse1 (bvadd |check_#in~n| (_ bv4294967295 32))) (.cse5 (not (bvsge .cse13 check_~y))) (.cse6 (= check_~y (bvadd check_~n (_ bv4294967295 32)))) (.cse4 (bvadd check_~y (_ bv1 32))) (.cse7 (= (bvadd check___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) (.cse3 (not (= (select |#memory_int| |check_#in~a.base|) .cse10))) (.cse8 (not (= .cse14 |check_#in~n|))) (.cse9 (not (bvslt |check_#in~n| (_ bv1073741824 32))))) (and (let ((.cse0 (bvadd |check_#in~x| (_ bv4294967295 32)))) (or (not (= (_ bv0 32) .cse0)) (bvsge .cse0 .cse1) .cse2 .cse3 (and (bvslt .cse4 (_ bv1073741824 32)) .cse5 .cse6 .cse7 (= (_ bv0 32) (bvadd check_~x (_ bv4294967294 32)))) .cse8 .cse9)) (or (and (= .cse10 (select |#memory_int| check_~a.base)) (bvsle (_ bv0 32) (bvadd check_~x (_ bv1 32))) (bvsle (_ bv0 32) check_~x) (bvslt check_~y check_~n) (not (= check___VERIFIER_assert_~cond (_ bv0 32)))) .cse11 .cse12 .cse3 (not (bvsle (_ bv0 32) (bvadd |check_#in~x| (_ bv1 32))))) (or (not (= (_ bv0 32) (bvadd |check_#in~x| (_ bv4294967294 32)))) .cse2 .cse7 .cse3 (bvsge (_ bv1 32) .cse1) .cse8 .cse9) (or (and (= check_~a.offset (_ bv0 32)) .cse5 .cse6 (= (_ bv0 32) .cse13) (bvslt check_~i .cse4) .cse7 (bvsle (_ bv0 32) check_~i) (bvslt check_~n (_ bv1073741824 32))) (not (= |check_#in~a.offset| (_ bv0 32))) (not (= |check_#in~x| (_ bv0 32))) (not (bvslt |check_#in~i| .cse14)) .cse3 (not (bvsle (_ bv0 32) |check_#in~i|)) .cse8 .cse9)))) [2019-12-07 16:48:27,105 INFO L246 CegarLoopResult]: For program point checkFINAL(lines 11 33) no Hoare annotation was computed. [2019-12-07 16:48:27,105 INFO L246 CegarLoopResult]: For program point L5(lines 5 7) no Hoare annotation was computed. [2019-12-07 16:48:27,105 INFO L246 CegarLoopResult]: For program point L5-1(lines 5 7) no Hoare annotation was computed. [2019-12-07 16:48:27,105 INFO L246 CegarLoopResult]: For program point checkErr1ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2019-12-07 16:48:27,105 INFO L246 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2019-12-07 16:48:27,105 INFO L246 CegarLoopResult]: For program point checkEXIT(lines 11 33) no Hoare annotation was computed. [2019-12-07 16:48:27,105 INFO L246 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2019-12-07 16:48:27,105 INFO L246 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2019-12-07 16:48:27,105 INFO L246 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2019-12-07 16:48:27,105 INFO L246 CegarLoopResult]: For program point L6-3(line 6) no Hoare annotation was computed. [2019-12-07 16:48:27,105 INFO L246 CegarLoopResult]: For program point L6-4(line 6) no Hoare annotation was computed. [2019-12-07 16:48:27,110 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2019-12-07 16:48:27,110 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2019-12-07 16:48:27,114 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2019-12-07 16:48:27,115 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2019-12-07 16:48:27,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 04:48:27 BoogieIcfgContainer [2019-12-07 16:48:27,116 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 16:48:27,116 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 16:48:27,116 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 16:48:27,117 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 16:48:27,117 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:42:41" (3/4) ... [2019-12-07 16:48:27,119 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 16:48:27,123 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure check [2019-12-07 16:48:27,126 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2019-12-07 16:48:27,126 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-12-07 16:48:27,126 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-12-07 16:48:27,145 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ~bvslt32(n, 1073741824bv32) && (\exists ULTIMATE.start_main_~i~0 : bv32 :: ~bvslt32(ULTIMATE.start_main_~i~0, n) && ~bvsle32(0bv32, ULTIMATE.start_main_~i~0)) [2019-12-07 16:48:27,162 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_98fbec7d-e599-4d8c-859b-eecaabea7ee4/bin/utaipan/witness.graphml [2019-12-07 16:48:27,162 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 16:48:27,163 INFO L168 Benchmark]: Toolchain (without parser) took 346048.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 172.5 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -125.7 MB). Peak memory consumption was 46.7 MB. Max. memory is 11.5 GB. [2019-12-07 16:48:27,163 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:48:27,163 INFO L168 Benchmark]: CACSL2BoogieTranslator took 166.85 ms. Allocated memory is still 1.0 GB. Free memory was 951.0 MB in the beginning and 940.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-12-07 16:48:27,164 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -188.3 MB). Peak memory consumption was 15.5 MB. Max. memory is 11.5 GB. [2019-12-07 16:48:27,164 INFO L168 Benchmark]: Boogie Preprocessor took 18.40 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-12-07 16:48:27,164 INFO L168 Benchmark]: RCFGBuilder took 216.23 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: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 11.5 GB. [2019-12-07 16:48:27,164 INFO L168 Benchmark]: TraceAbstraction took 345542.64 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 40.4 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.1 MB). Peak memory consumption was 346.7 MB. Max. memory is 11.5 GB. [2019-12-07 16:48:27,164 INFO L168 Benchmark]: Witness Printer took 45.68 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: 7.7 MB). Peak memory consumption was 7.7 MB. Max. memory is 11.5 GB. [2019-12-07 16:48:27,166 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 166.85 ms. Allocated memory is still 1.0 GB. Free memory was 951.0 MB in the beginning and 940.3 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 55.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -188.3 MB). Peak memory consumption was 15.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.40 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 216.23 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: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 345542.64 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 40.4 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.1 MB). Peak memory consumption was 346.7 MB. Max. memory is 11.5 GB. * Witness Printer took 45.68 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: 7.7 MB). Peak memory consumption was 7.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] * 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 - PositiveResult [Line: 6]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - 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 3 specifications checked. All of them hold - InvariantResult [Line: 35]: Loop Invariant [2019-12-07 16:48:27,169 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2019-12-07 16:48:27,169 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2019-12-07 16:48:27,169 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] [2019-12-07 16:48:27,170 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~i~0,QUANTIFIED] Derived loop invariant: ~bvslt32(n, 1073741824bv32) && (\exists ULTIMATE.start_main_~i~0 : bv32 :: ~bvslt32(ULTIMATE.start_main_~i~0, n) && ~bvsle32(0bv32, ULTIMATE.start_main_~i~0)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 27 locations, 3 error locations. Result: SAFE, OverallTime: 337.9s, OverallIterations: 6, TraceHistogramMax: 4, AutomataDifference: 32.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 7.5s, HoareTripleCheckerStatistics: 103 SDtfs, 648 SDslu, 795 SDs, 0 SdLazy, 1206 SolverSat, 358 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 584 GetRequests, 336 SyntacticMatches, 27 SemanticMatches, 221 ConstructedPredicates, 3 IntricatePredicates, 2 DeprecatedPredicates, 2623 ImplicationChecksByTransitivity, 327.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred in iteration=4, 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, 6 MinimizatonAttempts, 69 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 24 PreInvPairs, 30 NumberOfFragments, 278 HoareAnnotationTreeSize, 24 FomulaSimplifications, 626 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 4 FomulaSimplificationsInter, 1098 FormulaSimplificationTreeSizeReductionInter, 7.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 302.0s InterpolantComputationTime, 252 NumberOfCodeBlocks, 252 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 478 ConstructedInterpolants, 135 QuantifiedInterpolants, 104141 SizeOfPredicates, 209 NumberOfNonLiveVariables, 1113 ConjunctsInSsa, 256 ConjunctsInUnsatCore, 26 InterpolantComputations, 6 PerfectInterpolantSequences, 163/262 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...