./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/s1iff.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_db88dbf8-ad8f-4feb-874e-257fbfb78af8/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_db88dbf8-ad8f-4feb-874e-257fbfb78af8/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_db88dbf8-ad8f-4feb-874e-257fbfb78af8/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_db88dbf8-ad8f-4feb-874e-257fbfb78af8/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/s1iff.c -s /tmp/vcloud-vcloud-master/worker/run_dir_db88dbf8-ad8f-4feb-874e-257fbfb78af8/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_db88dbf8-ad8f-4feb-874e-257fbfb78af8/bin/utaipan --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 eec6b2d99ac9a557043cad5fb1ce9cac95211db3 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 [2020-12-09 19:38:35,735 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 19:38:35,737 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 19:38:35,776 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 19:38:35,776 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 19:38:35,778 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 19:38:35,779 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 19:38:35,782 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 19:38:35,784 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 19:38:35,785 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 19:38:35,786 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 19:38:35,787 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 19:38:35,788 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 19:38:35,789 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 19:38:35,790 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 19:38:35,791 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 19:38:35,792 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 19:38:35,793 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 19:38:35,795 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 19:38:35,797 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 19:38:35,799 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 19:38:35,800 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 19:38:35,802 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 19:38:35,802 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 19:38:35,806 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 19:38:35,806 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 19:38:35,806 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 19:38:35,808 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 19:38:35,808 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 19:38:35,809 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 19:38:35,810 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 19:38:35,811 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 19:38:35,812 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 19:38:35,813 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 19:38:35,814 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 19:38:35,814 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 19:38:35,815 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 19:38:35,815 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 19:38:35,815 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 19:38:35,816 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 19:38:35,817 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 19:38:35,818 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_db88dbf8-ad8f-4feb-874e-257fbfb78af8/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 19:38:35,839 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 19:38:35,839 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 19:38:35,840 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 19:38:35,840 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 19:38:35,840 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 19:38:35,840 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 19:38:35,840 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 19:38:35,840 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 19:38:35,840 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 19:38:35,840 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 19:38:35,841 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 19:38:35,841 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 19:38:35,841 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 19:38:35,841 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 19:38:35,841 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 19:38:35,842 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 19:38:35,842 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 19:38:35,842 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 19:38:35,842 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 19:38:35,842 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 19:38:35,842 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 19:38:35,842 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 19:38:35,843 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 19:38:35,843 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 19:38:35,843 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 19:38:35,843 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 19:38:35,843 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 19:38:35,843 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 19:38:35,843 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 19:38:35,843 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 19:38:35,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 19:38:35,844 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 19:38:35,844 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 19:38:35,844 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 19:38:35,844 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 19:38:35,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 19:38:35,844 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 19:38:35,844 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 19:38:35,844 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 19:38:35,844 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-vcloud-master/worker/run_dir_db88dbf8-ad8f-4feb-874e-257fbfb78af8/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_db88dbf8-ad8f-4feb-874e-257fbfb78af8/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eec6b2d99ac9a557043cad5fb1ce9cac95211db3 [2020-12-09 19:38:36,038 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 19:38:36,057 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 19:38:36,059 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 19:38:36,060 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 19:38:36,061 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 19:38:36,061 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_db88dbf8-ad8f-4feb-874e-257fbfb78af8/bin/utaipan/../../sv-benchmarks/c/array-fpi/s1iff.c [2020-12-09 19:38:36,103 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_db88dbf8-ad8f-4feb-874e-257fbfb78af8/bin/utaipan/data/b83bd4b6a/e2c55aa4c38a44c6b2b942ad7b1b1096/FLAGd75c59aeb [2020-12-09 19:38:36,468 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 19:38:36,468 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_db88dbf8-ad8f-4feb-874e-257fbfb78af8/sv-benchmarks/c/array-fpi/s1iff.c [2020-12-09 19:38:36,473 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_db88dbf8-ad8f-4feb-874e-257fbfb78af8/bin/utaipan/data/b83bd4b6a/e2c55aa4c38a44c6b2b942ad7b1b1096/FLAGd75c59aeb [2020-12-09 19:38:36,485 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_db88dbf8-ad8f-4feb-874e-257fbfb78af8/bin/utaipan/data/b83bd4b6a/e2c55aa4c38a44c6b2b942ad7b1b1096 [2020-12-09 19:38:36,487 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 19:38:36,488 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 19:38:36,490 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 19:38:36,490 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 19:38:36,493 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 19:38:36,494 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:38:36" (1/1) ... [2020-12-09 19:38:36,495 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6576dddc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:38:36, skipping insertion in model container [2020-12-09 19:38:36,496 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:38:36" (1/1) ... [2020-12-09 19:38:36,501 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 19:38:36,511 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 19:38:36,617 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_db88dbf8-ad8f-4feb-874e-257fbfb78af8/sv-benchmarks/c/array-fpi/s1iff.c[588,601] [2020-12-09 19:38:36,629 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 19:38:36,635 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 19:38:36,643 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_db88dbf8-ad8f-4feb-874e-257fbfb78af8/sv-benchmarks/c/array-fpi/s1iff.c[588,601] [2020-12-09 19:38:36,648 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 19:38:36,658 INFO L208 MainTranslator]: Completed translation [2020-12-09 19:38:36,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:38:36 WrapperNode [2020-12-09 19:38:36,659 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 19:38:36,659 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 19:38:36,659 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 19:38:36,660 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 19:38:36,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:38:36" (1/1) ... [2020-12-09 19:38:36,673 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:38:36" (1/1) ... [2020-12-09 19:38:36,691 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 19:38:36,692 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 19:38:36,692 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 19:38:36,692 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 19:38:36,699 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:38:36" (1/1) ... [2020-12-09 19:38:36,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:38:36" (1/1) ... [2020-12-09 19:38:36,702 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:38:36" (1/1) ... [2020-12-09 19:38:36,702 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:38:36" (1/1) ... [2020-12-09 19:38:36,708 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:38:36" (1/1) ... [2020-12-09 19:38:36,711 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:38:36" (1/1) ... [2020-12-09 19:38:36,713 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:38:36" (1/1) ... [2020-12-09 19:38:36,715 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 19:38:36,716 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 19:38:36,716 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 19:38:36,716 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 19:38:36,717 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:38:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_db88dbf8-ad8f-4feb-874e-257fbfb78af8/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 [2020-12-09 19:38:36,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 19:38:36,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 19:38:36,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 19:38:36,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-09 19:38:36,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 19:38:36,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 19:38:36,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-09 19:38:36,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 19:38:37,076 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 19:38:37,076 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-09 19:38:37,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:38:37 BoogieIcfgContainer [2020-12-09 19:38:37,078 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 19:38:37,080 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 19:38:37,080 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 19:38:37,083 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 19:38:37,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:38:36" (1/3) ... [2020-12-09 19:38:37,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32931168 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:38:37, skipping insertion in model container [2020-12-09 19:38:37,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:38:36" (2/3) ... [2020-12-09 19:38:37,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32931168 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:38:37, skipping insertion in model container [2020-12-09 19:38:37,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:38:37" (3/3) ... [2020-12-09 19:38:37,086 INFO L111 eAbstractionObserver]: Analyzing ICFG s1iff.c [2020-12-09 19:38:37,099 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 19:38:37,102 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 19:38:37,113 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 19:38:37,136 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 19:38:37,136 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 19:38:37,136 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 19:38:37,136 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 19:38:37,137 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 19:38:37,137 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 19:38:37,137 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 19:38:37,137 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 19:38:37,147 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-12-09 19:38:37,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 19:38:37,150 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:38:37,151 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 19:38:37,151 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:38:37,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:38:37,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1591516051, now seen corresponding path program 1 times [2020-12-09 19:38:37,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:38:37,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824530322] [2020-12-09 19:38:37,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:38:37,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:38:37,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:38:37,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824530322] [2020-12-09 19:38:37,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:38:37,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 19:38:37,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907189508] [2020-12-09 19:38:37,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 19:38:37,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:38:37,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 19:38:37,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 19:38:37,301 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2020-12-09 19:38:37,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:38:37,328 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2020-12-09 19:38:37,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 19:38:37,330 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-12-09 19:38:37,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:38:37,336 INFO L225 Difference]: With dead ends: 18 [2020-12-09 19:38:37,336 INFO L226 Difference]: Without dead ends: 8 [2020-12-09 19:38:37,338 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 19:38:37,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-12-09 19:38:37,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-12-09 19:38:37,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-12-09 19:38:37,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2020-12-09 19:38:37,359 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 6 [2020-12-09 19:38:37,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:38:37,360 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2020-12-09 19:38:37,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 19:38:37,360 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2020-12-09 19:38:37,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 19:38:37,360 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:38:37,360 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:38:37,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 19:38:37,361 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:38:37,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:38:37,361 INFO L82 PathProgramCache]: Analyzing trace with hash -2098745102, now seen corresponding path program 1 times [2020-12-09 19:38:37,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:38:37,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082691256] [2020-12-09 19:38:37,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:38:37,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:38:37,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-09 19:38:37,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082691256] [2020-12-09 19:38:37,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:38:37,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 19:38:37,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029760093] [2020-12-09 19:38:37,412 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 19:38:37,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:38:37,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 19:38:37,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 19:38:37,413 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand 4 states. [2020-12-09 19:38:37,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:38:37,433 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2020-12-09 19:38:37,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 19:38:37,434 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-09 19:38:37,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:38:37,434 INFO L225 Difference]: With dead ends: 12 [2020-12-09 19:38:37,435 INFO L226 Difference]: Without dead ends: 9 [2020-12-09 19:38:37,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 19:38:37,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-12-09 19:38:37,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-12-09 19:38:37,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-12-09 19:38:37,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2020-12-09 19:38:37,438 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 7 [2020-12-09 19:38:37,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:38:37,439 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2020-12-09 19:38:37,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 19:38:37,439 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2020-12-09 19:38:37,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 19:38:37,439 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:38:37,440 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:38:37,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 19:38:37,440 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:38:37,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:38:37,441 INFO L82 PathProgramCache]: Analyzing trace with hash -636631016, now seen corresponding path program 1 times [2020-12-09 19:38:37,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:38:37,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228392886] [2020-12-09 19:38:37,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:38:37,460 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 19:38:37,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1559991954] [2020-12-09 19:38:37,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_db88dbf8-ad8f-4feb-874e-257fbfb78af8/bin/utaipan/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 [2020-12-09 19:38:37,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:38:37,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 26 conjunts are in the unsatisfiable core [2020-12-09 19:38:37,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:38:37,549 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 10 treesize of output 8 [2020-12-09 19:38:37,554 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 19:38:37,563 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 19:38:37,568 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-09 19:38:37,569 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-09 19:38:37,575 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 19:38:37,576 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 19:38:37,577 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:29, output treesize:21 [2020-12-09 19:38:37,596 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2020-12-09 19:38:37,598 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 19:38:37,605 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 19:38:37,606 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 19:38:37,606 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:28 [2020-12-09 19:38:37,655 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2020-12-09 19:38:37,656 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 19:38:37,663 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 19:38:37,666 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-09 19:38:37,667 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:46, output treesize:31 [2020-12-09 19:38:37,712 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:38:37,718 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:38:37,720 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 19:38:37,727 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 19:38:37,729 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 19:38:37,733 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 19:38:37,737 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-09 19:38:37,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:38:37,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 19:38:37,790 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 19:38:41,705 WARN L197 SmtUtils]: Spent 3.81 s on a formula simplification that was a NOOP. DAG size: 42 [2020-12-09 19:38:41,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:38:41,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228392886] [2020-12-09 19:38:41,718 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 19:38:41,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559991954] [2020-12-09 19:38:41,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [895353903] [2020-12-09 19:38:41,732 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2020-12-09 19:38:41,732 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 19:38:41,735 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 19:38:41,739 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 19:38:41,739 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 19:38:41,845 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:38:42,017 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:38:44,118 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 19:38:44,408 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 19:38:44,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 19:38:44,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2020-12-09 19:38:44,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787360558] [2020-12-09 19:38:44,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-09 19:38:44,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:38:44,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-09 19:38:44,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2020-12-09 19:38:44,410 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 12 states. [2020-12-09 19:38:44,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:38:44,530 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2020-12-09 19:38:44,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 19:38:44,530 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 8 [2020-12-09 19:38:44,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:38:44,531 INFO L225 Difference]: With dead ends: 15 [2020-12-09 19:38:44,531 INFO L226 Difference]: Without dead ends: 12 [2020-12-09 19:38:44,531 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2020-12-09 19:38:44,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-12-09 19:38:44,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2020-12-09 19:38:44,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-12-09 19:38:44,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2020-12-09 19:38:44,533 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 8 [2020-12-09 19:38:44,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:38:44,534 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2020-12-09 19:38:44,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-09 19:38:44,534 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2020-12-09 19:38:44,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 19:38:44,534 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:38:44,534 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:38:44,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-09 19:38:44,735 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:38:44,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:38:44,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1739232690, now seen corresponding path program 2 times [2020-12-09 19:38:44,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:38:44,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916769315] [2020-12-09 19:38:44,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:38:44,744 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 19:38:44,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1996870881] [2020-12-09 19:38:44,745 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_db88dbf8-ad8f-4feb-874e-257fbfb78af8/bin/utaipan/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 [2020-12-09 19:38:44,774 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-09 19:38:44,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 19:38:44,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 19:38:44,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:38:44,800 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:38:44,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 19:38:44,819 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:38:44,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916769315] [2020-12-09 19:38:44,819 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 19:38:44,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996870881] [2020-12-09 19:38:44,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1565588639] [2020-12-09 19:38:44,821 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2020-12-09 19:38:44,821 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 19:38:44,821 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 19:38:44,822 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 19:38:44,822 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 19:38:44,945 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:38:45,060 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:38:45,069 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:38:45,081 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:38:45,091 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:38:45,100 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:38:45,107 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:38:45,115 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:38:47,203 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 19:38:47,419 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 19:38:47,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 19:38:47,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-12-09 19:38:47,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540747712] [2020-12-09 19:38:47,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 19:38:47,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:38:47,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 19:38:47,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-12-09 19:38:47,420 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand 8 states. [2020-12-09 19:38:47,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:38:47,475 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2020-12-09 19:38:47,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 19:38:47,476 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 9 [2020-12-09 19:38:47,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:38:47,476 INFO L225 Difference]: With dead ends: 20 [2020-12-09 19:38:47,476 INFO L226 Difference]: Without dead ends: 14 [2020-12-09 19:38:47,477 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-12-09 19:38:47,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-12-09 19:38:47,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 10. [2020-12-09 19:38:47,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-12-09 19:38:47,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2020-12-09 19:38:47,479 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 9 [2020-12-09 19:38:47,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:38:47,479 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2020-12-09 19:38:47,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 19:38:47,479 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2020-12-09 19:38:47,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 19:38:47,479 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:38:47,479 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:38:47,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 19:38:47,681 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:38:47,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:38:47,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1542522717, now seen corresponding path program 3 times [2020-12-09 19:38:47,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:38:47,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239479715] [2020-12-09 19:38:47,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:38:47,711 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 19:38:47,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2019842789] [2020-12-09 19:38:47,712 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_db88dbf8-ad8f-4feb-874e-257fbfb78af8/bin/utaipan/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 [2020-12-09 19:38:47,753 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-09 19:38:47,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 19:38:47,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 19:38:47,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:38:47,778 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:38:47,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 19:38:47,794 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:38:47,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239479715] [2020-12-09 19:38:47,794 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 19:38:47,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019842789] [2020-12-09 19:38:47,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [459717474] [2020-12-09 19:38:47,797 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2020-12-09 19:38:47,797 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 19:38:47,797 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 19:38:47,797 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 19:38:47,797 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 19:38:47,883 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:38:49,640 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 19:38:49,851 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 19:38:49,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 19:38:49,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-12-09 19:38:49,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460661958] [2020-12-09 19:38:49,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-09 19:38:49,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:38:49,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-09 19:38:49,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-12-09 19:38:49,852 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 9 states. [2020-12-09 19:38:49,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:38:49,916 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2020-12-09 19:38:49,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 19:38:49,917 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2020-12-09 19:38:49,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:38:49,917 INFO L225 Difference]: With dead ends: 14 [2020-12-09 19:38:49,917 INFO L226 Difference]: Without dead ends: 11 [2020-12-09 19:38:49,917 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2020-12-09 19:38:49,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-12-09 19:38:49,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-12-09 19:38:49,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-12-09 19:38:49,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2020-12-09 19:38:49,919 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 9 [2020-12-09 19:38:49,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:38:49,919 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2020-12-09 19:38:49,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-09 19:38:49,920 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2020-12-09 19:38:49,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 19:38:49,920 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:38:49,920 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2020-12-09 19:38:50,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2020-12-09 19:38:50,121 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:38:50,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:38:50,123 INFO L82 PathProgramCache]: Analyzing trace with hash 573521677, now seen corresponding path program 4 times [2020-12-09 19:38:50,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:38:50,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258596302] [2020-12-09 19:38:50,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:38:50,148 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 19:38:50,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1867748394] [2020-12-09 19:38:50,149 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_db88dbf8-ad8f-4feb-874e-257fbfb78af8/bin/utaipan/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 [2020-12-09 19:38:50,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 19:38:50,196 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 19:38:50,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 19:38:50,213 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 19:38:50,245 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 19:38:50,245 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 19:38:50,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 19:38:50,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:38:50 BoogieIcfgContainer [2020-12-09 19:38:50,497 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 19:38:50,498 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 19:38:50,498 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 19:38:50,498 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 19:38:50,498 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:38:37" (3/4) ... [2020-12-09 19:38:50,500 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-09 19:38:50,526 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_db88dbf8-ad8f-4feb-874e-257fbfb78af8/bin/utaipan/witness.graphml [2020-12-09 19:38:50,526 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 19:38:50,526 INFO L168 Benchmark]: Toolchain (without parser) took 14037.84 ms. Allocated memory was 98.6 MB in the beginning and 121.6 MB in the end (delta: 23.1 MB). Free memory was 58.1 MB in the beginning and 68.8 MB in the end (delta: -10.7 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. [2020-12-09 19:38:50,526 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 98.6 MB. Free memory is still 74.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:38:50,527 INFO L168 Benchmark]: CACSL2BoogieTranslator took 168.97 ms. Allocated memory is still 98.6 MB. Free memory was 57.8 MB in the beginning and 74.1 MB in the end (delta: -16.3 MB). Peak memory consumption was 9.1 MB. Max. memory is 16.1 GB. [2020-12-09 19:38:50,527 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.52 ms. Allocated memory is still 98.6 MB. Free memory was 74.1 MB in the beginning and 72.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:38:50,527 INFO L168 Benchmark]: Boogie Preprocessor took 23.70 ms. Allocated memory is still 98.6 MB. Free memory was 72.6 MB in the beginning and 71.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 19:38:50,527 INFO L168 Benchmark]: RCFGBuilder took 362.50 ms. Allocated memory is still 98.6 MB. Free memory was 71.3 MB in the beginning and 60.3 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 19:38:50,528 INFO L168 Benchmark]: TraceAbstraction took 13417.21 ms. Allocated memory was 98.6 MB in the beginning and 121.6 MB in the end (delta: 23.1 MB). Free memory was 59.9 MB in the beginning and 70.9 MB in the end (delta: -11.0 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. [2020-12-09 19:38:50,528 INFO L168 Benchmark]: Witness Printer took 28.16 ms. Allocated memory is still 121.6 MB. Free memory was 70.9 MB in the beginning and 68.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 19:38:50,529 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 98.6 MB. Free memory is still 74.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 168.97 ms. Allocated memory is still 98.6 MB. Free memory was 57.8 MB in the beginning and 74.1 MB in the end (delta: -16.3 MB). Peak memory consumption was 9.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.52 ms. Allocated memory is still 98.6 MB. Free memory was 74.1 MB in the beginning and 72.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.70 ms. Allocated memory is still 98.6 MB. Free memory was 72.6 MB in the beginning and 71.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 362.50 ms. Allocated memory is still 98.6 MB. Free memory was 71.3 MB in the beginning and 60.3 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13417.21 ms. Allocated memory was 98.6 MB in the beginning and 121.6 MB in the end (delta: 23.1 MB). Free memory was 59.9 MB in the beginning and 70.9 MB in the end (delta: -11.0 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. * Witness Printer took 28.16 ms. Allocated memory is still 121.6 MB. Free memory was 70.9 MB in the beginning and 68.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L13] COND FALSE !(!cond) [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = 1 [L32] i=0 VAL [N=2] [L32] COND TRUE i