./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound1.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_cec81e32-4955-43f6-b49a-f3448bd01a03/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_cec81e32-4955-43f6-b49a-f3448bd01a03/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_cec81e32-4955-43f6-b49a-f3448bd01a03/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_cec81e32-4955-43f6-b49a-f3448bd01a03/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_cec81e32-4955-43f6-b49a-f3448bd01a03/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_cec81e32-4955-43f6-b49a-f3448bd01a03/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 91f380cc586fc37a21f02c3c45ccd402d5300ed9 ................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_cec81e32-4955-43f6-b49a-f3448bd01a03/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_cec81e32-4955-43f6-b49a-f3448bd01a03/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_cec81e32-4955-43f6-b49a-f3448bd01a03/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_cec81e32-4955-43f6-b49a-f3448bd01a03/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_cec81e32-4955-43f6-b49a-f3448bd01a03/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_cec81e32-4955-43f6-b49a-f3448bd01a03/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 91f380cc586fc37a21f02c3c45ccd402d5300ed9 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 05:29:31,650 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 05:29:31,651 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 05:29:31,673 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 05:29:31,673 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 05:29:31,674 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 05:29:31,676 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 05:29:31,678 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 05:29:31,679 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 05:29:31,680 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 05:29:31,681 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 05:29:31,682 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 05:29:31,682 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 05:29:31,683 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 05:29:31,684 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 05:29:31,685 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 05:29:31,686 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 05:29:31,687 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 05:29:31,688 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 05:29:31,690 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 05:29:31,691 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 05:29:31,692 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 05:29:31,693 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 05:29:31,694 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 05:29:31,697 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 05:29:31,697 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 05:29:31,697 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 05:29:31,698 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 05:29:31,699 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 05:29:31,699 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 05:29:31,700 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 05:29:31,701 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 05:29:31,701 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 05:29:31,702 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 05:29:31,703 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 05:29:31,703 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 05:29:31,704 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 05:29:31,704 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 05:29:31,704 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 05:29:31,705 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 05:29:31,705 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 05:29:31,706 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_cec81e32-4955-43f6-b49a-f3448bd01a03/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 05:29:31,722 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 05:29:31,722 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 05:29:31,723 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 05:29:31,723 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 05:29:31,723 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 05:29:31,723 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 05:29:31,723 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 05:29:31,723 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 05:29:31,723 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 05:29:31,724 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 05:29:31,724 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 05:29:31,724 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 05:29:31,724 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 05:29:31,724 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 05:29:31,724 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 05:29:31,725 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 05:29:31,725 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 05:29:31,725 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 05:29:31,725 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 05:29:31,725 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 05:29:31,725 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 05:29:31,725 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 05:29:31,725 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 05:29:31,725 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 05:29:31,726 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 05:29:31,726 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 05:29:31,726 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 05:29:31,726 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 05:29:31,726 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 05:29:31,726 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 05:29:31,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 05:29:31,726 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 05:29:31,727 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 05:29:31,727 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 05:29:31,727 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 05:29:31,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 05:29:31,727 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 05:29:31,727 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 05:29:31,727 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 05:29:31,727 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_cec81e32-4955-43f6-b49a-f3448bd01a03/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_cec81e32-4955-43f6-b49a-f3448bd01a03/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 91f380cc586fc37a21f02c3c45ccd402d5300ed9 [2020-12-09 05:29:31,910 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 05:29:31,926 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 05:29:31,928 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 05:29:31,929 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 05:29:31,929 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 05:29:31,930 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_cec81e32-4955-43f6-b49a-f3448bd01a03/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound1.c [2020-12-09 05:29:31,971 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cec81e32-4955-43f6-b49a-f3448bd01a03/bin/utaipan/data/c094d16ef/1984713aa87c42cab90e4b12979f25e1/FLAG17f23f017 [2020-12-09 05:29:32,318 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 05:29:32,318 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_cec81e32-4955-43f6-b49a-f3448bd01a03/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound1.c [2020-12-09 05:29:32,323 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cec81e32-4955-43f6-b49a-f3448bd01a03/bin/utaipan/data/c094d16ef/1984713aa87c42cab90e4b12979f25e1/FLAG17f23f017 [2020-12-09 05:29:32,334 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_cec81e32-4955-43f6-b49a-f3448bd01a03/bin/utaipan/data/c094d16ef/1984713aa87c42cab90e4b12979f25e1 [2020-12-09 05:29:32,336 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 05:29:32,337 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 05:29:32,339 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 05:29:32,339 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 05:29:32,341 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 05:29:32,342 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:29:32" (1/1) ... [2020-12-09 05:29:32,348 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30dc069a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:29:32, skipping insertion in model container [2020-12-09 05:29:32,348 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:29:32" (1/1) ... [2020-12-09 05:29:32,353 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 05:29:32,364 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 05:29:32,463 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_cec81e32-4955-43f6-b49a-f3448bd01a03/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound1.c[458,471] [2020-12-09 05:29:32,479 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 05:29:32,486 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 05:29:32,494 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_cec81e32-4955-43f6-b49a-f3448bd01a03/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound1.c[458,471] [2020-12-09 05:29:32,500 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 05:29:32,509 INFO L208 MainTranslator]: Completed translation [2020-12-09 05:29:32,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:29:32 WrapperNode [2020-12-09 05:29:32,510 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 05:29:32,511 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 05:29:32,511 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 05:29:32,511 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 05:29:32,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:29:32" (1/1) ... [2020-12-09 05:29:32,521 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:29:32" (1/1) ... [2020-12-09 05:29:32,535 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 05:29:32,536 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 05:29:32,536 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 05:29:32,536 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 05:29:32,542 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:29:32" (1/1) ... [2020-12-09 05:29:32,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:29:32" (1/1) ... [2020-12-09 05:29:32,544 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:29:32" (1/1) ... [2020-12-09 05:29:32,544 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:29:32" (1/1) ... [2020-12-09 05:29:32,548 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:29:32" (1/1) ... [2020-12-09 05:29:32,552 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:29:32" (1/1) ... [2020-12-09 05:29:32,553 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:29:32" (1/1) ... [2020-12-09 05:29:32,555 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 05:29:32,555 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 05:29:32,556 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 05:29:32,556 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 05:29:32,556 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:29:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cec81e32-4955-43f6-b49a-f3448bd01a03/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 05:29:32,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 05:29:32,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 05:29:32,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 05:29:32,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 05:29:32,830 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 05:29:32,830 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2020-12-09 05:29:32,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:29:32 BoogieIcfgContainer [2020-12-09 05:29:32,832 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 05:29:32,834 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 05:29:32,834 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 05:29:32,838 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 05:29:32,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 05:29:32" (1/3) ... [2020-12-09 05:29:32,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a6f8193 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:29:32, skipping insertion in model container [2020-12-09 05:29:32,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:29:32" (2/3) ... [2020-12-09 05:29:32,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a6f8193 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:29:32, skipping insertion in model container [2020-12-09 05:29:32,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:29:32" (3/3) ... [2020-12-09 05:29:32,841 INFO L111 eAbstractionObserver]: Analyzing ICFG ps6-ll_unwindbound1.c [2020-12-09 05:29:32,855 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 05:29:32,857 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-12-09 05:29:32,868 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-09 05:29:32,892 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 05:29:32,892 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 05:29:32,893 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 05:29:32,893 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 05:29:32,893 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 05:29:32,893 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 05:29:32,893 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 05:29:32,893 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 05:29:32,904 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-12-09 05:29:32,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 05:29:32,907 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:29:32,908 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 05:29:32,908 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:29:32,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:29:32,914 INFO L82 PathProgramCache]: Analyzing trace with hash 93462408, now seen corresponding path program 1 times [2020-12-09 05:29:32,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:29:32,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057776080] [2020-12-09 05:29:32,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:29:33,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:29:33,043 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 05:29:33,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057776080] [2020-12-09 05:29:33,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:29:33,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 05:29:33,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255311351] [2020-12-09 05:29:33,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 05:29:33,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:29:33,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 05:29:33,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 05:29:33,065 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 2 states. [2020-12-09 05:29:33,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:29:33,076 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2020-12-09 05:29:33,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 05:29:33,077 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-12-09 05:29:33,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:29:33,082 INFO L225 Difference]: With dead ends: 33 [2020-12-09 05:29:33,082 INFO L226 Difference]: Without dead ends: 15 [2020-12-09 05:29:33,084 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 05:29:33,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-12-09 05:29:33,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-12-09 05:29:33,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-12-09 05:29:33,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-12-09 05:29:33,106 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 5 [2020-12-09 05:29:33,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:29:33,106 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-12-09 05:29:33,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 05:29:33,107 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-12-09 05:29:33,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 05:29:33,107 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:29:33,107 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 05:29:33,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 05:29:33,107 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:29:33,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:29:33,108 INFO L82 PathProgramCache]: Analyzing trace with hash 92788139, now seen corresponding path program 1 times [2020-12-09 05:29:33,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:29:33,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351822516] [2020-12-09 05:29:33,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:29:33,130 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 05:29:33,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1055226655] [2020-12-09 05:29:33,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cec81e32-4955-43f6-b49a-f3448bd01a03/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 05:29:33,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:29:33,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-09 05:29:33,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:29:33,229 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 05:29:33,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:30:03,095 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 05:30:03,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351822516] [2020-12-09 05:30:03,095 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 05:30:03,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055226655] [2020-12-09 05:30:03,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:30:03,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-09 05:30:03,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344611683] [2020-12-09 05:30:03,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 05:30:03,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:30:03,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 05:30:03,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=18, Unknown=1, NotChecked=0, Total=30 [2020-12-09 05:30:03,098 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 6 states. [2020-12-09 05:38:21,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:38:21,015 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2020-12-09 05:38:21,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 05:38:21,015 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2020-12-09 05:38:21,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:38:21,016 INFO L225 Difference]: With dead ends: 37 [2020-12-09 05:38:21,016 INFO L226 Difference]: Without dead ends: 26 [2020-12-09 05:38:21,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 250.1s TimeCoverageRelationStatistics Valid=23, Invalid=30, Unknown=3, NotChecked=0, Total=56 [2020-12-09 05:38:21,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-12-09 05:38:21,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 22. [2020-12-09 05:38:21,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-09 05:38:21,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2020-12-09 05:38:21,021 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 5 [2020-12-09 05:38:21,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:38:21,021 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2020-12-09 05:38:21,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 05:38:21,021 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2020-12-09 05:38:21,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 05:38:21,022 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:38:21,022 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:38:21,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-09 05:38:21,224 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:38:21,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:38:21,226 INFO L82 PathProgramCache]: Analyzing trace with hash 222245589, now seen corresponding path program 1 times [2020-12-09 05:38:21,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:38:21,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198123624] [2020-12-09 05:38:21,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:38:21,240 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 05:38:21,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1208533281] [2020-12-09 05:38:21,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cec81e32-4955-43f6-b49a-f3448bd01a03/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 05:38:21,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:38:21,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-09 05:38:21,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:38:21,314 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 05:38:21,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:38:23,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198123624] [2020-12-09 05:38:23,512 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 05:38:23,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208533281] [2020-12-09 05:38:23,512 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2020-12-09 05:38:23,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1798580636] [2020-12-09 05:38:23,525 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2020-12-09 05:38:23,526 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 05:38:23,529 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 05:38:23,532 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 05:38:23,533 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 05:38:23,613 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:38:23,792 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 05:38:29,538 WARN L197 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-12-09 05:40:46,305 WARN L197 SmtUtils]: Spent 2.28 m on a formula simplification that was a NOOP. DAG size: 65 [2020-12-09 05:40:46,548 WARN L197 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2020-12-09 05:40:46,829 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-12-09 05:40:46,830 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 05:40:46,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:40:46,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-09 05:40:46,830 ERROR L205 FreeRefinementEngine]: Strategy SIFA_TAIPAN failed to provide any proof altough trace is infeasible [2020-12-09 05:40:46,830 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 05:40:47,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 05:40:47,046 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-12-09 05:40:47,046 ERROR L222 RCFGBacktranslator]: unable to determine which branch was taken, unable to determine the location [2020-12-09 05:40:47,069 WARN L254 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-09 05:40:47,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 05:40:47 BoogieIcfgContainer [2020-12-09 05:40:47,070 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 05:40:47,071 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 05:40:47,071 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 05:40:47,071 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 05:40:47,072 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:29:32" (3/4) ... [2020-12-09 05:40:47,076 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 05:40:47,076 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 05:40:47,077 INFO L168 Benchmark]: Toolchain (without parser) took 674738.89 ms. Allocated memory was 92.3 MB in the beginning and 121.6 MB in the end (delta: 29.4 MB). Free memory was 50.6 MB in the beginning and 60.3 MB in the end (delta: -9.6 MB). Peak memory consumption was 22.3 MB. Max. memory is 16.1 GB. [2020-12-09 05:40:47,077 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 92.3 MB. Free memory is still 66.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 05:40:47,077 INFO L168 Benchmark]: CACSL2BoogieTranslator took 171.23 ms. Allocated memory is still 92.3 MB. Free memory was 50.5 MB in the beginning and 62.6 MB in the end (delta: -12.1 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2020-12-09 05:40:47,078 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.94 ms. Allocated memory is still 92.3 MB. Free memory was 62.6 MB in the beginning and 61.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 05:40:47,078 INFO L168 Benchmark]: Boogie Preprocessor took 18.51 ms. Allocated memory is still 92.3 MB. Free memory was 61.1 MB in the beginning and 60.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 05:40:47,079 INFO L168 Benchmark]: RCFGBuilder took 276.82 ms. Allocated memory is still 92.3 MB. Free memory was 59.8 MB in the beginning and 56.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 05:40:47,079 INFO L168 Benchmark]: TraceAbstraction took 674236.12 ms. Allocated memory was 92.3 MB in the beginning and 121.6 MB in the end (delta: 29.4 MB). Free memory was 56.1 MB in the beginning and 60.3 MB in the end (delta: -4.2 MB). Peak memory consumption was 26.4 MB. Max. memory is 16.1 GB. [2020-12-09 05:40:47,079 INFO L168 Benchmark]: Witness Printer took 5.20 ms. Allocated memory is still 121.6 MB. Free memory is still 60.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 05:40:47,082 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 92.3 MB. Free memory is still 66.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 171.23 ms. Allocated memory is still 92.3 MB. Free memory was 50.5 MB in the beginning and 62.6 MB in the end (delta: -12.1 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 24.94 ms. Allocated memory is still 92.3 MB. Free memory was 62.6 MB in the beginning and 61.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.51 ms. Allocated memory is still 92.3 MB. Free memory was 61.1 MB in the beginning and 60.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 276.82 ms. Allocated memory is still 92.3 MB. Free memory was 59.8 MB in the beginning and 56.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 674236.12 ms. Allocated memory was 92.3 MB in the beginning and 121.6 MB in the end (delta: 29.4 MB). Free memory was 56.1 MB in the beginning and 60.3 MB in the end (delta: -4.2 MB). Peak memory consumption was 26.4 MB. Max. memory is 16.1 GB. * Witness Printer took 5.20 ms. Allocated memory is still 121.6 MB. Free memory is still 60.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L17] int counter = 0; [L19] short k; [L20] long long y, x, c; [L21] k = __VERIFIER_nondet_short() [L7] COND TRUE !cond [L24] y = 0 [L25] x = 0 [L26] c = 0 [L28] EXPR counter++ [L28] COND TRUE counter++<1 [L10] COND FALSE !(!(cond)) [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y * y + x [L28] EXPR counter++ [L28] COND FALSE !(counter++<1) [L10] COND TRUE !(cond) [L12] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 674.1s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 497.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 30 SDtfs, 30 SDslu, 32 SDs, 0 SdLazy, 22 SolverSat, 14 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 277.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 250.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=2, 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, 2 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 29.9s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 372 SizeOfPredicates, 6 NumberOfNonLiveVariables, 58 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2020-12-09 05:40:48,610 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 05:40:48,612 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 05:40:48,644 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 05:40:48,645 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 05:40:48,646 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 05:40:48,648 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 05:40:48,650 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 05:40:48,652 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 05:40:48,653 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 05:40:48,654 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 05:40:48,655 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 05:40:48,656 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 05:40:48,657 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 05:40:48,658 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 05:40:48,659 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 05:40:48,660 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 05:40:48,661 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 05:40:48,663 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 05:40:48,666 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 05:40:48,667 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 05:40:48,669 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 05:40:48,670 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 05:40:48,671 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 05:40:48,674 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 05:40:48,674 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 05:40:48,675 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 05:40:48,676 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 05:40:48,676 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 05:40:48,677 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 05:40:48,677 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 05:40:48,678 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 05:40:48,678 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 05:40:48,679 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 05:40:48,680 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 05:40:48,680 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 05:40:48,681 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 05:40:48,681 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 05:40:48,681 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 05:40:48,682 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 05:40:48,682 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 05:40:48,683 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_cec81e32-4955-43f6-b49a-f3448bd01a03/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-09 05:40:48,699 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 05:40:48,699 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 05:40:48,700 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 05:40:48,700 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 05:40:48,700 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 05:40:48,700 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 05:40:48,701 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 05:40:48,701 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 05:40:48,701 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 05:40:48,701 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 05:40:48,701 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 05:40:48,702 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 05:40:48,702 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 05:40:48,702 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 05:40:48,702 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 05:40:48,702 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 05:40:48,702 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 05:40:48,702 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 05:40:48,702 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 05:40:48,702 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 05:40:48,702 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 05:40:48,703 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 05:40:48,703 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 05:40:48,703 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 05:40:48,703 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 05:40:48,703 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 05:40:48,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 05:40:48,703 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 05:40:48,703 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 05:40:48,704 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 05:40:48,704 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 05:40:48,704 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 05:40:48,704 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 05:40:48,704 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 05:40:48,704 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 05:40:48,704 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_cec81e32-4955-43f6-b49a-f3448bd01a03/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_cec81e32-4955-43f6-b49a-f3448bd01a03/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 91f380cc586fc37a21f02c3c45ccd402d5300ed9 [2020-12-09 05:40:48,924 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 05:40:48,939 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 05:40:48,941 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 05:40:48,942 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 05:40:48,943 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 05:40:48,944 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_cec81e32-4955-43f6-b49a-f3448bd01a03/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound1.c [2020-12-09 05:40:48,984 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cec81e32-4955-43f6-b49a-f3448bd01a03/bin/utaipan/data/93e5d1151/eac1e42a06f945e69eee7274d69725c5/FLAG441274e3f [2020-12-09 05:40:49,380 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 05:40:49,381 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_cec81e32-4955-43f6-b49a-f3448bd01a03/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound1.c [2020-12-09 05:40:49,388 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cec81e32-4955-43f6-b49a-f3448bd01a03/bin/utaipan/data/93e5d1151/eac1e42a06f945e69eee7274d69725c5/FLAG441274e3f [2020-12-09 05:40:49,401 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_cec81e32-4955-43f6-b49a-f3448bd01a03/bin/utaipan/data/93e5d1151/eac1e42a06f945e69eee7274d69725c5 [2020-12-09 05:40:49,403 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 05:40:49,405 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 05:40:49,406 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 05:40:49,406 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 05:40:49,410 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 05:40:49,410 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:40:49" (1/1) ... [2020-12-09 05:40:49,412 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@241337eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:40:49, skipping insertion in model container [2020-12-09 05:40:49,412 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:40:49" (1/1) ... [2020-12-09 05:40:49,420 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 05:40:49,432 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 05:40:49,524 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_cec81e32-4955-43f6-b49a-f3448bd01a03/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound1.c[458,471] [2020-12-09 05:40:49,538 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 05:40:49,547 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 05:40:49,556 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_cec81e32-4955-43f6-b49a-f3448bd01a03/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound1.c[458,471] [2020-12-09 05:40:49,563 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 05:40:49,574 INFO L208 MainTranslator]: Completed translation [2020-12-09 05:40:49,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:40:49 WrapperNode [2020-12-09 05:40:49,574 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 05:40:49,576 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 05:40:49,576 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 05:40:49,576 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 05:40:49,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:40:49" (1/1) ... [2020-12-09 05:40:49,588 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:40:49" (1/1) ... [2020-12-09 05:40:49,628 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 05:40:49,629 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 05:40:49,629 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 05:40:49,629 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 05:40:49,635 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:40:49" (1/1) ... [2020-12-09 05:40:49,635 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:40:49" (1/1) ... [2020-12-09 05:40:49,637 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:40:49" (1/1) ... [2020-12-09 05:40:49,637 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:40:49" (1/1) ... [2020-12-09 05:40:49,642 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:40:49" (1/1) ... [2020-12-09 05:40:49,645 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:40:49" (1/1) ... [2020-12-09 05:40:49,646 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:40:49" (1/1) ... [2020-12-09 05:40:49,647 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 05:40:49,648 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 05:40:49,648 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 05:40:49,648 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 05:40:49,649 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:40:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cec81e32-4955-43f6-b49a-f3448bd01a03/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 05:40:49,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 05:40:49,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 05:40:49,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 05:40:49,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 05:40:51,281 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 05:40:51,281 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2020-12-09 05:40:51,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:40:51 BoogieIcfgContainer [2020-12-09 05:40:51,282 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 05:40:51,284 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 05:40:51,284 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 05:40:51,286 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 05:40:51,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 05:40:49" (1/3) ... [2020-12-09 05:40:51,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@543aaa13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:40:51, skipping insertion in model container [2020-12-09 05:40:51,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:40:49" (2/3) ... [2020-12-09 05:40:51,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@543aaa13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:40:51, skipping insertion in model container [2020-12-09 05:40:51,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:40:51" (3/3) ... [2020-12-09 05:40:51,292 INFO L111 eAbstractionObserver]: Analyzing ICFG ps6-ll_unwindbound1.c [2020-12-09 05:40:51,303 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 05:40:51,305 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-12-09 05:40:51,313 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-09 05:40:51,329 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 05:40:51,329 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 05:40:51,330 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 05:40:51,330 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 05:40:51,330 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 05:40:51,330 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 05:40:51,330 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 05:40:51,330 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 05:40:51,338 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-12-09 05:40:51,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 05:40:51,342 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:40:51,342 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:40:51,342 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:40:51,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:40:51,346 INFO L82 PathProgramCache]: Analyzing trace with hash 120120651, now seen corresponding path program 1 times [2020-12-09 05:40:51,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 05:40:51,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1622768866] [2020-12-09 05:40:51,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cec81e32-4955-43f6-b49a-f3448bd01a03/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-09 05:40:51,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:40:51,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-09 05:40:51,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:40:51,597 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 05:40:51,597 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 05:40:51,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1622768866] [2020-12-09 05:40:51,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:40:51,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 05:40:51,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419003417] [2020-12-09 05:40:51,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 05:40:51,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 05:40:51,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 05:40:51,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 05:40:51,613 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2020-12-09 05:40:51,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:40:51,624 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2020-12-09 05:40:51,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 05:40:51,625 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-09 05:40:51,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:40:51,631 INFO L225 Difference]: With dead ends: 41 [2020-12-09 05:40:51,631 INFO L226 Difference]: Without dead ends: 18 [2020-12-09 05:40:51,633 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 05:40:51,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-12-09 05:40:51,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-12-09 05:40:51,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-12-09 05:40:51,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-12-09 05:40:51,655 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 8 [2020-12-09 05:40:51,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:40:51,656 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-12-09 05:40:51,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 05:40:51,656 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-12-09 05:40:51,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 05:40:51,656 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:40:51,656 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:40:51,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 05:40:51,857 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:40:51,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:40:51,858 INFO L82 PathProgramCache]: Analyzing trace with hash 176704684, now seen corresponding path program 1 times [2020-12-09 05:40:51,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 05:40:51,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1820586659] [2020-12-09 05:40:51,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cec81e32-4955-43f6-b49a-f3448bd01a03/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-09 05:40:52,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:40:52,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 05:40:52,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:40:52,229 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 05:40:52,229 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 05:40:52,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1820586659] [2020-12-09 05:40:52,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:40:52,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 05:40:52,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823618933] [2020-12-09 05:40:52,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:40:52,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 05:40:52,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:40:52,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:40:52,231 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 4 states. [2020-12-09 05:40:54,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:40:54,239 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2020-12-09 05:40:54,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 05:40:54,239 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-09 05:40:54,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:40:54,240 INFO L225 Difference]: With dead ends: 36 [2020-12-09 05:40:54,240 INFO L226 Difference]: Without dead ends: 25 [2020-12-09 05:40:54,241 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 05:40:54,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-12-09 05:40:54,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2020-12-09 05:40:54,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-09 05:40:54,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-12-09 05:40:54,247 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 8 [2020-12-09 05:40:54,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:40:54,247 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-12-09 05:40:54,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:40:54,247 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-12-09 05:40:54,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 05:40:54,248 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:40:54,248 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:40:54,448 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 05:40:54,450 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:40:54,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:40:54,451 INFO L82 PathProgramCache]: Analyzing trace with hash -938089448, now seen corresponding path program 1 times [2020-12-09 05:40:54,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 05:40:54,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1083686988] [2020-12-09 05:40:54,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cec81e32-4955-43f6-b49a-f3448bd01a03/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-09 05:40:54,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:40:54,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 05:40:54,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:40:54,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:40:54,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:40:55,078 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:40:55,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1083686988] [2020-12-09 05:40:55,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [532240237] [2020-12-09 05:40:55,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cec81e32-4955-43f6-b49a-f3448bd01a03/bin/utaipan/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt [2020-12-09 05:40:55,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:40:55,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 05:40:55,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:40:55,895 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:40:55,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:40:55,910 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:40:55,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563076520] [2020-12-09 05:40:55,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cec81e32-4955-43f6-b49a-f3448bd01a03/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 05:40:56,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:40:56,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 05:40:56,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:40:56,278 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:40:56,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:40:56,289 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:40:56,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-12-09 05:40:56,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 7 [2020-12-09 05:40:56,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798830583] [2020-12-09 05:40:56,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 05:40:56,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 05:40:56,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 05:40:56,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-09 05:40:56,291 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 8 states. [2020-12-09 05:40:57,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:40:57,258 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2020-12-09 05:40:57,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 05:40:57,258 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-12-09 05:40:57,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:40:57,259 INFO L225 Difference]: With dead ends: 32 [2020-12-09 05:40:57,259 INFO L226 Difference]: Without dead ends: 18 [2020-12-09 05:40:57,260 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-12-09 05:40:57,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-12-09 05:40:57,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-12-09 05:40:57,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-12-09 05:40:57,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2020-12-09 05:40:57,263 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 12 [2020-12-09 05:40:57,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:40:57,263 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2020-12-09 05:40:57,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 05:40:57,263 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2020-12-09 05:40:57,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 05:40:57,264 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:40:57,264 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:40:57,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 cvc4 --incremental --print-success --lang smt [2020-12-09 05:40:57,867 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:40:57,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:40:57,868 INFO L82 PathProgramCache]: Analyzing trace with hash 983954548, now seen corresponding path program 1 times [2020-12-09 05:40:57,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 05:40:57,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1986683466] [2020-12-09 05:40:57,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cec81e32-4955-43f6-b49a-f3448bd01a03/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-12-09 05:40:58,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:40:58,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 05:40:58,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:40:59,754 WARN L197 SmtUtils]: Spent 770.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-12-09 05:41:00,083 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 05:41:00,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:41:05,808 WARN L197 SmtUtils]: Spent 998.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-12-09 05:41:08,019 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 05:41:08,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1986683466] [2020-12-09 05:41:08,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-09 05:41:08,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2020-12-09 05:41:08,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143273205] [2020-12-09 05:41:08,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:41:08,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 05:41:08,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:41:08,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-09 05:41:08,021 INFO L87 Difference]: Start difference. First operand 18 states and 17 transitions. Second operand 4 states. [2020-12-09 05:41:13,656 WARN L197 SmtUtils]: Spent 2.20 s on a formula simplification that was a NOOP. DAG size: 32 [2020-12-09 05:41:17,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:41:17,010 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2020-12-09 05:41:17,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 05:41:17,047 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-09 05:41:17,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:41:17,048 INFO L225 Difference]: With dead ends: 18 [2020-12-09 05:41:17,048 INFO L226 Difference]: Without dead ends: 16 [2020-12-09 05:41:17,048 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-09 05:41:17,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-09 05:41:17,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-12-09 05:41:17,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-09 05:41:17,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2020-12-09 05:41:17,053 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 13 [2020-12-09 05:41:17,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:41:17,053 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2020-12-09 05:41:17,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:41:17,054 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2020-12-09 05:41:17,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 05:41:17,054 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:41:17,054 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:41:17,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-12-09 05:41:17,256 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:41:17,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:41:17,257 INFO L82 PathProgramCache]: Analyzing trace with hash 687671895, now seen corresponding path program 1 times [2020-12-09 05:41:17,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 05:41:17,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1595832373] [2020-12-09 05:41:17,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cec81e32-4955-43f6-b49a-f3448bd01a03/bin/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-12-09 05:41:17,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 05:41:17,963 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 05:41:18,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 05:41:18,735 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 05:41:18,833 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-12-09 05:41:18,834 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 05:41:19,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-12-09 05:41:19,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 05:41:19 BoogieIcfgContainer [2020-12-09 05:41:19,060 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 05:41:19,060 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 05:41:19,060 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 05:41:19,060 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 05:41:19,061 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:40:51" (3/4) ... [2020-12-09 05:41:19,062 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-09 05:41:19,091 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_cec81e32-4955-43f6-b49a-f3448bd01a03/bin/utaipan/witness.graphml [2020-12-09 05:41:19,091 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 05:41:19,092 INFO L168 Benchmark]: Toolchain (without parser) took 29686.86 ms. Allocated memory was 56.6 MB in the beginning and 81.8 MB in the end (delta: 25.2 MB). Free memory was 36.4 MB in the beginning and 24.9 MB in the end (delta: 11.4 MB). Peak memory consumption was 35.3 MB. Max. memory is 16.1 GB. [2020-12-09 05:41:19,092 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 56.6 MB. Free memory was 39.7 MB in the beginning and 39.6 MB in the end (delta: 73.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 05:41:19,093 INFO L168 Benchmark]: CACSL2BoogieTranslator took 168.80 ms. Allocated memory is still 56.6 MB. Free memory was 36.2 MB in the beginning and 25.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 05:41:19,093 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.61 ms. Allocated memory is still 56.6 MB. Free memory was 25.4 MB in the beginning and 40.8 MB in the end (delta: -15.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 05:41:19,093 INFO L168 Benchmark]: Boogie Preprocessor took 18.97 ms. Allocated memory is still 56.6 MB. Free memory was 40.8 MB in the beginning and 39.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 05:41:19,094 INFO L168 Benchmark]: RCFGBuilder took 1634.34 ms. Allocated memory is still 56.6 MB. Free memory was 39.5 MB in the beginning and 25.6 MB in the end (delta: 13.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 05:41:19,094 INFO L168 Benchmark]: TraceAbstraction took 27776.44 ms. Allocated memory was 56.6 MB in the beginning and 81.8 MB in the end (delta: 25.2 MB). Free memory was 25.2 MB in the beginning and 27.8 MB in the end (delta: -2.6 MB). Peak memory consumption was 26.0 MB. Max. memory is 16.1 GB. [2020-12-09 05:41:19,094 INFO L168 Benchmark]: Witness Printer took 30.86 ms. Allocated memory is still 81.8 MB. Free memory was 27.8 MB in the beginning and 24.9 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 05:41:19,097 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 56.6 MB. Free memory was 39.7 MB in the beginning and 39.6 MB in the end (delta: 73.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 168.80 ms. Allocated memory is still 56.6 MB. Free memory was 36.2 MB in the beginning and 25.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.61 ms. Allocated memory is still 56.6 MB. Free memory was 25.4 MB in the beginning and 40.8 MB in the end (delta: -15.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.97 ms. Allocated memory is still 56.6 MB. Free memory was 40.8 MB in the beginning and 39.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 1634.34 ms. Allocated memory is still 56.6 MB. Free memory was 39.5 MB in the beginning and 25.6 MB in the end (delta: 13.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 27776.44 ms. Allocated memory was 56.6 MB in the beginning and 81.8 MB in the end (delta: 25.2 MB). Free memory was 25.2 MB in the beginning and 27.8 MB in the end (delta: -2.6 MB). Peak memory consumption was 26.0 MB. Max. memory is 16.1 GB. * Witness Printer took 30.86 ms. Allocated memory is still 81.8 MB. Free memory was 27.8 MB in the beginning and 24.9 MB in the end (delta: 2.8 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: 12]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L17] int counter = 0; VAL [counter=0] [L19] short k; [L20] long long y, x, c; [L21] k = __VERIFIER_nondet_short() [L7] COND FALSE !(!cond) VAL [counter=0] [L24] y = 0 [L25] x = 0 [L26] c = 0 VAL [counter=0] [L28] EXPR counter++ VAL [counter=1] [L28] COND TRUE counter++<1 [L10] COND FALSE !(!(cond)) VAL [counter=1] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y * y + x VAL [counter=1] [L28] EXPR counter++ VAL [counter=2] [L28] COND FALSE !(counter++<1) [L10] COND FALSE !(!(cond)) VAL [counter=2] [L10] COND TRUE !(cond) VAL [counter=2] [L12] reach_error() VAL [counter=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 27.7s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 12.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 62 SDtfs, 35 SDslu, 79 SDs, 0 SdLazy, 47 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 108 GetRequests, 89 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 14.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, 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, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 2.9s SatisfiabilityAnalysisTime, 10.1s InterpolantComputationTime, 80 NumberOfCodeBlocks, 80 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 7801 SizeOfPredicates, 9 NumberOfNonLiveVariables, 254 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 10 InterpolantComputations, 3 PerfectInterpolantSequences, 8/22 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...