./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/reducercommutativity/rangesum05.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb738c18-b4de-46c3-afd0-3824a47bc44e/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb738c18-b4de-46c3-afd0-3824a47bc44e/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb738c18-b4de-46c3-afd0-3824a47bc44e/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb738c18-b4de-46c3-afd0-3824a47bc44e/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/reducercommutativity/rangesum05.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb738c18-b4de-46c3-afd0-3824a47bc44e/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb738c18-b4de-46c3-afd0-3824a47bc44e/bin/utaipan-WLngWcDbfI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0bbcd29b379466a58e055ac550736cd77ce56d9c ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:30:08,690 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:30:08,694 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:30:08,739 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:30:08,740 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:30:08,745 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:30:08,748 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:30:08,752 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:30:08,754 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:30:08,760 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:30:08,761 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:30:08,762 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:30:08,763 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:30:08,766 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:30:08,767 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:30:08,769 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:30:08,771 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:30:08,775 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:30:08,777 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:30:08,785 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:30:08,787 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:30:08,789 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:30:08,792 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:30:08,793 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:30:08,801 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:30:08,802 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:30:08,802 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:30:08,804 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:30:08,805 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:30:08,806 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:30:08,807 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:30:08,808 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:30:08,810 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:30:08,811 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:30:08,812 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:30:08,812 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:30:08,813 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:30:08,813 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:30:08,814 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:30:08,814 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:30:08,815 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:30:08,817 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb738c18-b4de-46c3-afd0-3824a47bc44e/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:30:08,856 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:30:08,856 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:30:08,857 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:30:08,857 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:30:08,858 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:30:08,858 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:30:08,858 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:30:08,858 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:30:08,865 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:30:08,865 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:30:08,866 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:30:08,867 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:30:08,867 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:30:08,867 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:30:08,867 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:30:08,868 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:30:08,869 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:30:08,869 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:30:08,869 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:30:08,869 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:30:08,870 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:30:08,870 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:30:08,870 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:30:08,870 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:30:08,870 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:30:08,871 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:30:08,871 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:30:08,871 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:30:08,871 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:30:08,872 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:30:08,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:30:08,872 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:30:08,873 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:30:08,873 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:30:08,873 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:30:08,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:30:08,874 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:30:08,874 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:30:08,874 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:30:08,874 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb738c18-b4de-46c3-afd0-3824a47bc44e/bin/utaipan-WLngWcDbfI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb738c18-b4de-46c3-afd0-3824a47bc44e/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0bbcd29b379466a58e055ac550736cd77ce56d9c [2021-10-11 02:30:09,180 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:30:09,209 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:30:09,212 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:30:09,215 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:30:09,220 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:30:09,221 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb738c18-b4de-46c3-afd0-3824a47bc44e/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/reducercommutativity/rangesum05.i [2021-10-11 02:30:09,285 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb738c18-b4de-46c3-afd0-3824a47bc44e/bin/utaipan-WLngWcDbfI/data/56f170644/deec27cb8cb2420aaba66eb4d904dc0a/FLAGe29a685c9 [2021-10-11 02:30:09,767 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:30:09,768 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb738c18-b4de-46c3-afd0-3824a47bc44e/sv-benchmarks/c/reducercommutativity/rangesum05.i [2021-10-11 02:30:09,780 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb738c18-b4de-46c3-afd0-3824a47bc44e/bin/utaipan-WLngWcDbfI/data/56f170644/deec27cb8cb2420aaba66eb4d904dc0a/FLAGe29a685c9 [2021-10-11 02:30:10,115 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb738c18-b4de-46c3-afd0-3824a47bc44e/bin/utaipan-WLngWcDbfI/data/56f170644/deec27cb8cb2420aaba66eb4d904dc0a [2021-10-11 02:30:10,118 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:30:10,120 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:30:10,123 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:30:10,123 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:30:10,126 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:30:10,127 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:30:10" (1/1) ... [2021-10-11 02:30:10,129 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4453bbb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:10, skipping insertion in model container [2021-10-11 02:30:10,129 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:30:10" (1/1) ... [2021-10-11 02:30:10,137 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:30:10,153 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:30:10,356 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb738c18-b4de-46c3-afd0-3824a47bc44e/sv-benchmarks/c/reducercommutativity/rangesum05.i[1457,1470] [2021-10-11 02:30:10,360 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:30:10,367 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:30:10,387 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb738c18-b4de-46c3-afd0-3824a47bc44e/sv-benchmarks/c/reducercommutativity/rangesum05.i[1457,1470] [2021-10-11 02:30:10,396 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:30:10,411 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:30:10,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:10 WrapperNode [2021-10-11 02:30:10,411 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:30:10,413 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:30:10,413 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:30:10,413 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:30:10,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:10" (1/1) ... [2021-10-11 02:30:10,427 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:10" (1/1) ... [2021-10-11 02:30:10,452 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:30:10,453 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:30:10,453 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:30:10,453 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:30:10,461 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:10" (1/1) ... [2021-10-11 02:30:10,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:10" (1/1) ... [2021-10-11 02:30:10,465 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:10" (1/1) ... [2021-10-11 02:30:10,466 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:10" (1/1) ... [2021-10-11 02:30:10,473 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:10" (1/1) ... [2021-10-11 02:30:10,488 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:10" (1/1) ... [2021-10-11 02:30:10,490 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:10" (1/1) ... [2021-10-11 02:30:10,493 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:30:10,494 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:30:10,494 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:30:10,494 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:30:10,504 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:10" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb738c18-b4de-46c3-afd0-3824a47bc44e/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:30:10,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:30:10,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:30:10,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 02:30:10,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:30:10,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:30:10,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 02:30:10,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:30:11,326 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:30:11,327 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-10-11 02:30:11,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:30:11 BoogieIcfgContainer [2021-10-11 02:30:11,330 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:30:11,331 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:30:11,332 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:30:11,335 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:30:11,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:30:10" (1/3) ... [2021-10-11 02:30:11,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@654e6a45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:30:11, skipping insertion in model container [2021-10-11 02:30:11,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:10" (2/3) ... [2021-10-11 02:30:11,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@654e6a45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:30:11, skipping insertion in model container [2021-10-11 02:30:11,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:30:11" (3/3) ... [2021-10-11 02:30:11,339 INFO L111 eAbstractionObserver]: Analyzing ICFG rangesum05.i [2021-10-11 02:30:11,357 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:30:11,361 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:30:11,371 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:30:11,393 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:30:11,394 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:30:11,394 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:30:11,394 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:30:11,394 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:30:11,395 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:30:11,395 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:30:11,395 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:30:11,407 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2021-10-11 02:30:11,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:30:11,411 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:11,412 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:11,412 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:30:11,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:11,418 INFO L82 PathProgramCache]: Analyzing trace with hash -964703457, now seen corresponding path program 1 times [2021-10-11 02:30:11,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:11,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354066860] [2021-10-11 02:30:11,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:11,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:11,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:30:11,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354066860] [2021-10-11 02:30:11,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:11,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:30:11,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660848480] [2021-10-11 02:30:11,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:30:11,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:11,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:30:11,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:30:11,677 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2021-10-11 02:30:11,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:11,695 INFO L93 Difference]: Finished difference Result 21 states and 31 transitions. [2021-10-11 02:30:11,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:30:11,697 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2021-10-11 02:30:11,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:11,706 INFO L225 Difference]: With dead ends: 21 [2021-10-11 02:30:11,706 INFO L226 Difference]: Without dead ends: 10 [2021-10-11 02:30:11,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:30:11,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-11 02:30:11,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-11 02:30:11,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-11 02:30:11,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 14 transitions. [2021-10-11 02:30:11,739 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 14 transitions. Word has length 8 [2021-10-11 02:30:11,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:11,739 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 14 transitions. [2021-10-11 02:30:11,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:30:11,739 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 14 transitions. [2021-10-11 02:30:11,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:30:11,740 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:11,740 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:11,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:30:11,740 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:30:11,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:11,741 INFO L82 PathProgramCache]: Analyzing trace with hash 2050331539, now seen corresponding path program 1 times [2021-10-11 02:30:11,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:11,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425725501] [2021-10-11 02:30:11,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:11,760 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:30:11,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1528766020] [2021-10-11 02:30:11,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb738c18-b4de-46c3-afd0-3824a47bc44e/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:30:11,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:11,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:30:11,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:30:11,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:30:11,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:30:11,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:30:11,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425725501] [2021-10-11 02:30:11,904 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:30:11,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528766020] [2021-10-11 02:30:11,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:11,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-11 02:30:11,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072717689] [2021-10-11 02:30:11,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:30:11,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:11,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:30:11,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:30:11,911 INFO L87 Difference]: Start difference. First operand 10 states and 14 transitions. Second operand 4 states. [2021-10-11 02:30:11,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:11,966 INFO L93 Difference]: Finished difference Result 22 states and 34 transitions. [2021-10-11 02:30:11,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:30:11,967 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-10-11 02:30:11,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:11,968 INFO L225 Difference]: With dead ends: 22 [2021-10-11 02:30:11,968 INFO L226 Difference]: Without dead ends: 16 [2021-10-11 02:30:11,969 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:30:11,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-11 02:30:11,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-11 02:30:11,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-11 02:30:11,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2021-10-11 02:30:11,980 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 9 [2021-10-11 02:30:11,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:11,981 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2021-10-11 02:30:11,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:30:11,981 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2021-10-11 02:30:11,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 02:30:11,983 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:11,984 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:12,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-10-11 02:30:12,200 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:30:12,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:12,201 INFO L82 PathProgramCache]: Analyzing trace with hash -939408813, now seen corresponding path program 1 times [2021-10-11 02:30:12,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:12,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620966345] [2021-10-11 02:30:12,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:12,232 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:30:12,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2048036783] [2021-10-11 02:30:12,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb738c18-b4de-46c3-afd0-3824a47bc44e/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:30:12,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:12,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:30:12,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:30:12,351 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-11 02:30:12,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:30:12,373 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-11 02:30:12,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620966345] [2021-10-11 02:30:12,373 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:30:12,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048036783] [2021-10-11 02:30:12,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:12,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-11 02:30:12,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184178802] [2021-10-11 02:30:12,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:30:12,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:12,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:30:12,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:30:12,380 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand 4 states. [2021-10-11 02:30:12,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:12,408 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2021-10-11 02:30:12,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:30:12,409 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2021-10-11 02:30:12,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:12,410 INFO L225 Difference]: With dead ends: 24 [2021-10-11 02:30:12,410 INFO L226 Difference]: Without dead ends: 18 [2021-10-11 02:30:12,410 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:30:12,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-11 02:30:12,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-10-11 02:30:12,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-11 02:30:12,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2021-10-11 02:30:12,417 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 15 [2021-10-11 02:30:12,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:12,418 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2021-10-11 02:30:12,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:30:12,418 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2021-10-11 02:30:12,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-11 02:30:12,419 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:12,419 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:12,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:30:12,644 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:30:12,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:12,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1226876461, now seen corresponding path program 1 times [2021-10-11 02:30:12,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:12,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102589804] [2021-10-11 02:30:12,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:12,667 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:30:12,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [785951953] [2021-10-11 02:30:12,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb738c18-b4de-46c3-afd0-3824a47bc44e/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:30:12,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:12,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:30:12,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:30:12,832 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-11 02:30:12,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:30:12,880 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-11 02:30:12,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102589804] [2021-10-11 02:30:12,881 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:30:12,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785951953] [2021-10-11 02:30:12,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1310955527] [2021-10-11 02:30:12,904 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-10-11 02:30:12,905 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:30:12,909 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:30:12,915 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:30:12,918 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:30:14,092 WARN L197 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 149 [2021-10-11 02:30:15,200 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:15,296 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:15,379 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:15,714 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:15,792 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:16,141 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:16,456 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:16,553 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:16,746 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:16,863 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:17,011 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 125 [2021-10-11 02:30:17,293 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:17,424 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:17,434 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:17,534 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:17,544 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:17,554 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:17,565 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:17,576 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:17,616 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:17,746 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:17,783 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:17,799 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:18,214 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:30:18,339 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2021-10-11 02:30:18,620 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2021-10-11 02:30:18,814 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:30:18,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 02:30:18,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-10-11 02:30:18,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677534215] [2021-10-11 02:30:18,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:30:18,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:18,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:30:18,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-10-11 02:30:18,818 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand 6 states. [2021-10-11 02:30:18,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:18,837 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2021-10-11 02:30:18,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:30:18,838 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2021-10-11 02:30:18,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:18,843 INFO L225 Difference]: With dead ends: 36 [2021-10-11 02:30:18,844 INFO L226 Difference]: Without dead ends: 21 [2021-10-11 02:30:18,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-10-11 02:30:18,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-11 02:30:18,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-10-11 02:30:18,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-10-11 02:30:18,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2021-10-11 02:30:18,854 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 17 [2021-10-11 02:30:18,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:18,854 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2021-10-11 02:30:18,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:30:18,854 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2021-10-11 02:30:18,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-11 02:30:18,857 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:18,857 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:19,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:30:19,084 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:30:19,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:19,085 INFO L82 PathProgramCache]: Analyzing trace with hash -2012560801, now seen corresponding path program 2 times [2021-10-11 02:30:19,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:19,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60254797] [2021-10-11 02:30:19,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:19,119 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:30:19,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1568661461] [2021-10-11 02:30:19,120 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb738c18-b4de-46c3-afd0-3824a47bc44e/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:30:19,255 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-11 02:30:19,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 02:30:19,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:30:19,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:30:19,288 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-10-11 02:30:19,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:30:19,326 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-10-11 02:30:19,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60254797] [2021-10-11 02:30:19,326 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:30:19,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568661461] [2021-10-11 02:30:19,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [929888977] [2021-10-11 02:30:19,329 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-10-11 02:30:19,329 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:30:19,329 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:30:19,330 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:30:19,330 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:30:20,588 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:20,786 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:20,899 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:20,931 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:21,173 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:21,488 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:21,960 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:21,970 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:21,979 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:22,149 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:22,252 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:22,262 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:24,330 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:24,469 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:24,527 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:24,613 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:26,682 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:26,719 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:26,968 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:30:27,124 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2021-10-11 02:30:27,263 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 32 [2021-10-11 02:30:27,507 WARN L197 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2021-10-11 02:30:27,727 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2021-10-11 02:30:27,728 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:30:27,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 02:30:27,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-10-11 02:30:27,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46390016] [2021-10-11 02:30:27,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 02:30:27,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:27,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 02:30:27,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-10-11 02:30:27,730 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 7 states. [2021-10-11 02:30:27,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:27,810 INFO L93 Difference]: Finished difference Result 42 states and 57 transitions. [2021-10-11 02:30:27,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:30:27,811 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2021-10-11 02:30:27,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:27,812 INFO L225 Difference]: With dead ends: 42 [2021-10-11 02:30:27,812 INFO L226 Difference]: Without dead ends: 30 [2021-10-11 02:30:27,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-10-11 02:30:27,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-11 02:30:27,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-10-11 02:30:27,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-10-11 02:30:27,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2021-10-11 02:30:27,817 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 20 [2021-10-11 02:30:27,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:27,818 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2021-10-11 02:30:27,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 02:30:27,818 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2021-10-11 02:30:27,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-11 02:30:27,819 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:27,819 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:28,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:30:28,028 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:30:28,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:28,029 INFO L82 PathProgramCache]: Analyzing trace with hash -827205591, now seen corresponding path program 3 times [2021-10-11 02:30:28,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:28,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289763219] [2021-10-11 02:30:28,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:28,055 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:30:28,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1149519236] [2021-10-11 02:30:28,056 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb738c18-b4de-46c3-afd0-3824a47bc44e/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:30:28,161 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-11 02:30:28,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 02:30:28,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:30:28,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:30:28,207 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-10-11 02:30:28,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:30:28,245 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-10-11 02:30:28,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289763219] [2021-10-11 02:30:28,246 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:30:28,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149519236] [2021-10-11 02:30:28,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1832211616] [2021-10-11 02:30:28,248 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-10-11 02:30:28,248 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:30:28,249 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:30:28,249 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:30:28,249 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:30:29,359 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:29,513 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:29,692 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:29,887 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:30,252 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:30,491 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:30,846 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:30,854 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:30,861 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:30,902 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:30,993 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:31,076 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:31,166 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:31,219 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:31,238 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:31,376 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:31,383 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:31,416 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:31,746 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:30:31,914 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2021-10-11 02:30:32,053 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 32 [2021-10-11 02:30:32,228 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2021-10-11 02:30:32,401 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:30:32,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 02:30:32,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-10-11 02:30:32,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198971372] [2021-10-11 02:30:32,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:30:32,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:32,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:30:32,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-10-11 02:30:32,402 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 6 states. [2021-10-11 02:30:32,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:32,423 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2021-10-11 02:30:32,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:30:32,424 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2021-10-11 02:30:32,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:32,424 INFO L225 Difference]: With dead ends: 41 [2021-10-11 02:30:32,424 INFO L226 Difference]: Without dead ends: 32 [2021-10-11 02:30:32,425 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-10-11 02:30:32,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-11 02:30:32,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-10-11 02:30:32,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2021-10-11 02:30:32,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2021-10-11 02:30:32,430 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 29 [2021-10-11 02:30:32,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:32,430 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2021-10-11 02:30:32,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:30:32,430 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2021-10-11 02:30:32,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-11 02:30:32,431 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:32,431 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:32,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:30:32,632 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:30:32,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:32,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1657942295, now seen corresponding path program 4 times [2021-10-11 02:30:32,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:32,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085680325] [2021-10-11 02:30:32,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:32,647 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:30:32,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [358576813] [2021-10-11 02:30:32,647 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb738c18-b4de-46c3-afd0-3824a47bc44e/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:30:32,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:32,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 02:30:32,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:30:32,833 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-10-11 02:30:32,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:30:32,873 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-10-11 02:30:32,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085680325] [2021-10-11 02:30:32,873 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:30:32,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358576813] [2021-10-11 02:30:32,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1116110120] [2021-10-11 02:30:32,875 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-10-11 02:30:32,876 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:30:32,876 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:30:32,876 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:30:32,876 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:30:33,852 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:33,876 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:34,454 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:34,507 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:34,569 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:34,581 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:34,589 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:34,792 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:34,852 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:34,862 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:35,035 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:35,079 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:35,180 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:35,187 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:30:35,403 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:30:35,577 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2021-10-11 02:30:35,703 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 32 [2021-10-11 02:30:35,865 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2021-10-11 02:30:36,046 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:30:36,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 02:30:36,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-11 02:30:36,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552480772] [2021-10-11 02:30:36,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 02:30:36,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:36,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 02:30:36,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-10-11 02:30:36,048 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 7 states. [2021-10-11 02:30:36,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:36,065 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2021-10-11 02:30:36,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:30:36,066 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31 [2021-10-11 02:30:36,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:36,067 INFO L225 Difference]: With dead ends: 59 [2021-10-11 02:30:36,067 INFO L226 Difference]: Without dead ends: 33 [2021-10-11 02:30:36,068 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-10-11 02:30:36,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-10-11 02:30:36,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-10-11 02:30:36,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-10-11 02:30:36,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2021-10-11 02:30:36,073 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 31 [2021-10-11 02:30:36,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:36,073 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2021-10-11 02:30:36,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 02:30:36,073 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2021-10-11 02:30:36,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-11 02:30:36,074 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:36,075 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:36,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:30:36,276 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:30:36,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:36,277 INFO L82 PathProgramCache]: Analyzing trace with hash -164903947, now seen corresponding path program 5 times [2021-10-11 02:30:36,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:36,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450000401] [2021-10-11 02:30:36,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:36,306 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:30:36,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1347197867] [2021-10-11 02:30:36,307 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb738c18-b4de-46c3-afd0-3824a47bc44e/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:30:36,706 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-11 02:30:36,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-10-11 02:30:36,706 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:30:37,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:30:37,131 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:30:37,415 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:30:37,415 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:30:37,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable239 [2021-10-11 02:30:37,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:30:37 BoogieIcfgContainer [2021-10-11 02:30:37,670 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:30:37,670 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:30:37,670 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:30:37,671 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:30:37,672 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:30:11" (3/4) ... [2021-10-11 02:30:37,674 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:30:37,735 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb738c18-b4de-46c3-afd0-3824a47bc44e/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:30:37,735 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:30:37,736 INFO L168 Benchmark]: Toolchain (without parser) took 27615.95 ms. Allocated memory was 127.9 MB in the beginning and 337.6 MB in the end (delta: 209.7 MB). Free memory was 89.8 MB in the beginning and 288.7 MB in the end (delta: -198.9 MB). Peak memory consumption was 11.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:37,736 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 127.9 MB. Free memory was 106.3 MB in the beginning and 106.3 MB in the end (delta: 68.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:30:37,737 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.30 ms. Allocated memory is still 127.9 MB. Free memory was 89.5 MB in the beginning and 102.2 MB in the end (delta: -12.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:37,737 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.34 ms. Allocated memory is still 127.9 MB. Free memory was 102.2 MB in the beginning and 100.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:37,737 INFO L168 Benchmark]: Boogie Preprocessor took 40.57 ms. Allocated memory is still 127.9 MB. Free memory was 100.3 MB in the beginning and 99.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:30:37,738 INFO L168 Benchmark]: RCFGBuilder took 835.92 ms. Allocated memory is still 127.9 MB. Free memory was 98.6 MB in the beginning and 60.0 MB in the end (delta: 38.6 MB). Peak memory consumption was 39.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:37,738 INFO L168 Benchmark]: TraceAbstraction took 26338.38 ms. Allocated memory was 127.9 MB in the beginning and 337.6 MB in the end (delta: 209.7 MB). Free memory was 59.6 MB in the beginning and 292.9 MB in the end (delta: -233.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:30:37,738 INFO L168 Benchmark]: Witness Printer took 64.89 ms. Allocated memory is still 337.6 MB. Free memory was 292.9 MB in the beginning and 288.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:37,740 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 127.9 MB. Free memory was 106.3 MB in the beginning and 106.3 MB in the end (delta: 68.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 289.30 ms. Allocated memory is still 127.9 MB. Free memory was 89.5 MB in the beginning and 102.2 MB in the end (delta: -12.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.34 ms. Allocated memory is still 127.9 MB. Free memory was 102.2 MB in the beginning and 100.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.57 ms. Allocated memory is still 127.9 MB. Free memory was 100.3 MB in the beginning and 99.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 835.92 ms. Allocated memory is still 127.9 MB. Free memory was 98.6 MB in the beginning and 60.0 MB in the end (delta: 38.6 MB). Peak memory consumption was 39.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 26338.38 ms. Allocated memory was 127.9 MB in the beginning and 337.6 MB in the end (delta: 209.7 MB). Free memory was 59.6 MB in the beginning and 292.9 MB in the end (delta: -233.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 64.89 ms. Allocated memory is still 337.6 MB. Free memory was 292.9 MB in the beginning and 288.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 61]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L42] int x[5]; [L16] int i; [L17] i = 0 [L17] COND TRUE i < 5 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 5 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 5 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 5 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 5 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND FALSE !(i < 5) [L44] int temp; [L45] int ret; [L46] int ret2; [L47] int ret5; [L24] int i; [L25] long long ret; [L26] ret = 0 [L27] int cnt = 0; [L28] i = 0 [L28] COND TRUE i < 5 [L29] COND FALSE !(i > 5/2) [L28] i++ [L28] COND TRUE i < 5 [L29] COND FALSE !(i > 5/2) [L28] i++ [L28] COND TRUE i < 5 [L29] COND FALSE !(i > 5/2) [L28] i++ [L28] COND TRUE i < 5 [L29] COND TRUE i > 5/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 5 [L29] COND TRUE i > 5/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND FALSE !(i < 5) [L34] COND TRUE cnt !=0 [L35] return ret / cnt; [L49] ret = rangesum(x) [L51] EXPR x[0] [L51] temp=x[0] [L51] EXPR x[1] [L51] x[0] = x[1] [L51] x[1] = temp [L24] int i; [L25] long long ret; [L26] ret = 0 [L27] int cnt = 0; [L28] i = 0 [L28] COND TRUE i < 5 [L29] COND FALSE !(i > 5/2) [L28] i++ [L28] COND TRUE i < 5 [L29] COND FALSE !(i > 5/2) [L28] i++ [L28] COND TRUE i < 5 [L29] COND FALSE !(i > 5/2) [L28] i++ [L28] COND TRUE i < 5 [L29] COND TRUE i > 5/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 5 [L29] COND TRUE i > 5/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND FALSE !(i < 5) [L34] COND TRUE cnt !=0 [L35] return ret / cnt; [L52] ret2 = rangesum(x) [L53] EXPR x[0] [L53] temp=x[0] [L54] int i =0 ; [L54] COND TRUE i<5 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND TRUE i<5 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND TRUE i<5 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND TRUE i<5 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND FALSE !(i<5 -1) [L57] x[5 -1] = temp [L24] int i; [L25] long long ret; [L26] ret = 0 [L27] int cnt = 0; [L28] i = 0 [L28] COND TRUE i < 5 [L29] COND FALSE !(i > 5/2) [L28] i++ [L28] COND TRUE i < 5 [L29] COND FALSE !(i > 5/2) [L28] i++ [L28] COND TRUE i < 5 [L29] COND FALSE !(i > 5/2) [L28] i++ [L28] COND TRUE i < 5 [L29] COND TRUE i > 5/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 5 [L29] COND TRUE i > 5/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND FALSE !(i < 5) [L34] COND TRUE cnt !=0 [L35] return ret / cnt; [L58] ret5 = rangesum(x) [L60] COND TRUE ret != ret2 || ret !=ret5 [L61] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 26.2s, OverallIterations: 8, TraceHistogramMax: 5, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 82 SDtfs, 0 SDslu, 119 SDs, 0 SdLazy, 69 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 329 GetRequests, 279 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=7, 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, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 161 NumberOfCodeBlocks, 159 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 237 ConstructedInterpolants, 0 QuantifiedInterpolants, 6565 SizeOfPredicates, 0 NumberOfNonLiveVariables, 976 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 13 InterpolantComputations, 5 PerfectInterpolantSequences, 304/338 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...