./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound100.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_2c15dc23-d1fe-4688-b5ab-1a03f0cc2cf3/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_2c15dc23-d1fe-4688-b5ab-1a03f0cc2cf3/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2c15dc23-d1fe-4688-b5ab-1a03f0cc2cf3/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2c15dc23-d1fe-4688-b5ab-1a03f0cc2cf3/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound100.c -s /tmp/vcloud-vcloud-master/worker/run_dir_2c15dc23-d1fe-4688-b5ab-1a03f0cc2cf3/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2c15dc23-d1fe-4688-b5ab-1a03f0cc2cf3/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 8dab4c89b7bfa0a9578f6aa14537851d09f72688 ..................................................................................................................................................................................................................................................................................................... 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_2c15dc23-d1fe-4688-b5ab-1a03f0cc2cf3/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_2c15dc23-d1fe-4688-b5ab-1a03f0cc2cf3/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2c15dc23-d1fe-4688-b5ab-1a03f0cc2cf3/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2c15dc23-d1fe-4688-b5ab-1a03f0cc2cf3/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound100.c -s /tmp/vcloud-vcloud-master/worker/run_dir_2c15dc23-d1fe-4688-b5ab-1a03f0cc2cf3/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2c15dc23-d1fe-4688-b5ab-1a03f0cc2cf3/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 8dab4c89b7bfa0a9578f6aa14537851d09f72688 ............................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 06:27:17,785 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 06:27:17,787 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 06:27:17,818 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 06:27:17,828 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 06:27:17,829 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 06:27:17,831 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 06:27:17,833 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 06:27:17,835 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 06:27:17,836 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 06:27:17,837 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 06:27:17,839 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 06:27:17,839 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 06:27:17,840 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 06:27:17,841 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 06:27:17,843 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 06:27:17,843 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 06:27:17,844 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 06:27:17,846 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 06:27:17,849 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 06:27:17,850 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 06:27:17,852 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 06:27:17,853 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 06:27:17,854 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 06:27:17,857 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 06:27:17,857 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 06:27:17,858 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 06:27:17,859 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 06:27:17,859 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 06:27:17,860 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 06:27:17,861 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 06:27:17,861 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 06:27:17,862 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 06:27:17,863 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 06:27:17,864 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 06:27:17,864 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 06:27:17,864 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 06:27:17,864 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 06:27:17,864 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 06:27:17,865 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 06:27:17,865 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 06:27:17,866 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2c15dc23-d1fe-4688-b5ab-1a03f0cc2cf3/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 06:27:17,888 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 06:27:17,888 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 06:27:17,889 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 06:27:17,889 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 06:27:17,889 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 06:27:17,890 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 06:27:17,890 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 06:27:17,890 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 06:27:17,890 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 06:27:17,890 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 06:27:17,890 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 06:27:17,890 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 06:27:17,891 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 06:27:17,891 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 06:27:17,891 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 06:27:17,891 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 06:27:17,891 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 06:27:17,892 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 06:27:17,892 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 06:27:17,892 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 06:27:17,892 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 06:27:17,892 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 06:27:17,892 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 06:27:17,892 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 06:27:17,892 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 06:27:17,892 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 06:27:17,892 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 06:27:17,893 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 06:27:17,893 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 06:27:17,893 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 06:27:17,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 06:27:17,893 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 06:27:17,893 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 06:27:17,893 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 06:27:17,893 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 06:27:17,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 06:27:17,894 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 06:27:17,894 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 06:27:17,894 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 06:27:17,894 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_2c15dc23-d1fe-4688-b5ab-1a03f0cc2cf3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_2c15dc23-d1fe-4688-b5ab-1a03f0cc2cf3/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8dab4c89b7bfa0a9578f6aa14537851d09f72688 [2020-12-09 06:27:18,084 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 06:27:18,104 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 06:27:18,106 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 06:27:18,107 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 06:27:18,108 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 06:27:18,108 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2c15dc23-d1fe-4688-b5ab-1a03f0cc2cf3/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound100.c [2020-12-09 06:27:18,148 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2c15dc23-d1fe-4688-b5ab-1a03f0cc2cf3/bin/utaipan/data/3f1d3869d/258c4fea1a834a56a43fcc48199ffde4/FLAGae0a6a82a [2020-12-09 06:27:18,521 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 06:27:18,522 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2c15dc23-d1fe-4688-b5ab-1a03f0cc2cf3/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound100.c [2020-12-09 06:27:18,527 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2c15dc23-d1fe-4688-b5ab-1a03f0cc2cf3/bin/utaipan/data/3f1d3869d/258c4fea1a834a56a43fcc48199ffde4/FLAGae0a6a82a [2020-12-09 06:27:18,536 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2c15dc23-d1fe-4688-b5ab-1a03f0cc2cf3/bin/utaipan/data/3f1d3869d/258c4fea1a834a56a43fcc48199ffde4 [2020-12-09 06:27:18,538 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 06:27:18,539 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 06:27:18,540 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 06:27:18,540 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 06:27:18,542 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 06:27:18,543 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:27:18" (1/1) ... [2020-12-09 06:27:18,544 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f7a2b73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:27:18, skipping insertion in model container [2020-12-09 06:27:18,544 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:27:18" (1/1) ... [2020-12-09 06:27:18,549 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 06:27:18,560 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 06:27:18,666 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_2c15dc23-d1fe-4688-b5ab-1a03f0cc2cf3/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound100.c[709,722] [2020-12-09 06:27:18,688 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 06:27:18,696 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 06:27:18,705 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_2c15dc23-d1fe-4688-b5ab-1a03f0cc2cf3/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound100.c[709,722] [2020-12-09 06:27:18,717 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 06:27:18,729 INFO L208 MainTranslator]: Completed translation [2020-12-09 06:27:18,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:27:18 WrapperNode [2020-12-09 06:27:18,729 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 06:27:18,730 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 06:27:18,730 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 06:27:18,730 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 06:27:18,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:27:18" (1/1) ... [2020-12-09 06:27:18,741 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:27:18" (1/1) ... [2020-12-09 06:27:18,755 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 06:27:18,756 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 06:27:18,756 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 06:27:18,756 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 06:27:18,762 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:27:18" (1/1) ... [2020-12-09 06:27:18,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:27:18" (1/1) ... [2020-12-09 06:27:18,764 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:27:18" (1/1) ... [2020-12-09 06:27:18,764 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:27:18" (1/1) ... [2020-12-09 06:27:18,767 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:27:18" (1/1) ... [2020-12-09 06:27:18,770 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:27:18" (1/1) ... [2020-12-09 06:27:18,771 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:27:18" (1/1) ... [2020-12-09 06:27:18,773 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 06:27:18,774 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 06:27:18,774 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 06:27:18,774 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 06:27:18,775 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:27:18" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2c15dc23-d1fe-4688-b5ab-1a03f0cc2cf3/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 06:27:18,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 06:27:18,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 06:27:18,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 06:27:18,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 06:27:19,027 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 06:27:19,027 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2020-12-09 06:27:19,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:27:19 BoogieIcfgContainer [2020-12-09 06:27:19,029 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 06:27:19,031 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 06:27:19,031 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 06:27:19,034 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 06:27:19,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 06:27:18" (1/3) ... [2020-12-09 06:27:19,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3180d8ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:27:19, skipping insertion in model container [2020-12-09 06:27:19,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:27:18" (2/3) ... [2020-12-09 06:27:19,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3180d8ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:27:19, skipping insertion in model container [2020-12-09 06:27:19,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:27:19" (3/3) ... [2020-12-09 06:27:19,037 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_unwindbound100.c [2020-12-09 06:27:19,050 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 06:27:19,052 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-09 06:27:19,062 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-09 06:27:19,085 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 06:27:19,085 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 06:27:19,085 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 06:27:19,085 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 06:27:19,085 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 06:27:19,086 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 06:27:19,086 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 06:27:19,086 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 06:27:19,099 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-12-09 06:27:19,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 06:27:19,104 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:27:19,104 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 06:27:19,105 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:27:19,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:27:19,109 INFO L82 PathProgramCache]: Analyzing trace with hash 113318109, now seen corresponding path program 1 times [2020-12-09 06:27:19,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:27:19,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829278856] [2020-12-09 06:27:19,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:27:19,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:27:19,208 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 06:27:19,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829278856] [2020-12-09 06:27:19,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:27:19,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 06:27:19,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315429392] [2020-12-09 06:27:19,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 06:27:19,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:27:19,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 06:27:19,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 06:27:19,224 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-12-09 06:27:19,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:27:19,236 INFO L93 Difference]: Finished difference Result 57 states and 73 transitions. [2020-12-09 06:27:19,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 06:27:19,237 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-12-09 06:27:19,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:27:19,243 INFO L225 Difference]: With dead ends: 57 [2020-12-09 06:27:19,243 INFO L226 Difference]: Without dead ends: 27 [2020-12-09 06:27:19,245 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 06:27:19,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-09 06:27:19,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-12-09 06:27:19,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-09 06:27:19,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-12-09 06:27:19,269 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 5 [2020-12-09 06:27:19,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:27:19,270 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-12-09 06:27:19,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 06:27:19,270 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-12-09 06:27:19,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 06:27:19,270 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:27:19,270 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 06:27:19,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 06:27:19,271 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:27:19,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:27:19,271 INFO L82 PathProgramCache]: Analyzing trace with hash 111966592, now seen corresponding path program 1 times [2020-12-09 06:27:19,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:27:19,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4948179] [2020-12-09 06:27:19,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:27:19,284 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 06:27:19,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [792686671] [2020-12-09 06:27:19,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2c15dc23-d1fe-4688-b5ab-1a03f0cc2cf3/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 06:27:19,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 06:27:19,325 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 06:27:19,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 06:27:19,335 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 06:27:19,354 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 06:27:19,354 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 06:27:19,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-09 06:27:19,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 06:27:19 BoogieIcfgContainer [2020-12-09 06:27:19,641 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 06:27:19,644 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 06:27:19,644 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 06:27:19,645 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 06:27:19,646 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:27:19" (3/4) ... [2020-12-09 06:27:19,657 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 06:27:19,658 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 06:27:19,664 INFO L168 Benchmark]: Toolchain (without parser) took 1120.96 ms. Allocated memory is still 115.3 MB. Free memory was 78.2 MB in the beginning and 92.4 MB in the end (delta: -14.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 06:27:19,666 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 115.3 MB. Free memory is still 94.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 06:27:19,669 INFO L168 Benchmark]: CACSL2BoogieTranslator took 189.66 ms. Allocated memory is still 115.3 MB. Free memory was 78.0 MB in the beginning and 91.0 MB in the end (delta: -12.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 06:27:19,672 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.08 ms. Allocated memory is still 115.3 MB. Free memory was 91.0 MB in the beginning and 89.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 06:27:19,683 INFO L168 Benchmark]: Boogie Preprocessor took 17.71 ms. Allocated memory is still 115.3 MB. Free memory was 89.0 MB in the beginning and 87.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 06:27:19,685 INFO L168 Benchmark]: RCFGBuilder took 255.29 ms. Allocated memory is still 115.3 MB. Free memory was 87.9 MB in the beginning and 71.6 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-12-09 06:27:19,688 INFO L168 Benchmark]: TraceAbstraction took 611.22 ms. Allocated memory is still 115.3 MB. Free memory was 71.2 MB in the beginning and 92.4 MB in the end (delta: -21.2 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. [2020-12-09 06:27:19,690 INFO L168 Benchmark]: Witness Printer took 14.41 ms. Allocated memory is still 115.3 MB. Free memory is still 92.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 06:27:19,700 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 115.3 MB. Free memory is still 94.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 189.66 ms. Allocated memory is still 115.3 MB. Free memory was 78.0 MB in the beginning and 91.0 MB in the end (delta: -12.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 25.08 ms. Allocated memory is still 115.3 MB. Free memory was 91.0 MB in the beginning and 89.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.71 ms. Allocated memory is still 115.3 MB. Free memory was 89.0 MB in the beginning and 87.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 255.29 ms. Allocated memory is still 115.3 MB. Free memory was 87.9 MB in the beginning and 71.6 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 611.22 ms. Allocated memory is still 115.3 MB. Free memory was 71.2 MB in the beginning and 92.4 MB in the end (delta: -21.2 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. * Witness Printer took 14.41 ms. Allocated memory is still 115.3 MB. Free memory is still 92.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 34. Possible FailurePath: [L24] int counter = 0; [L26] int r; [L27] double a, x, s; [L28] a = __VERIFIER_nondet_double() [L29] x = a [L30] s = 3.25 [L31] r = 1 VAL [counter=0] [L33] EXPR counter++ VAL [counter=1] [L33] COND TRUE counter++<100 [L17] COND TRUE !(cond) VAL [counter=1] [L19] reach_error() VAL [counter=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 30 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 06:27:21,454 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 06:27:21,456 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 06:27:21,478 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 06:27:21,479 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 06:27:21,480 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 06:27:21,481 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 06:27:21,483 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 06:27:21,485 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 06:27:21,486 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 06:27:21,486 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 06:27:21,488 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 06:27:21,488 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 06:27:21,489 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 06:27:21,490 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 06:27:21,491 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 06:27:21,492 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 06:27:21,492 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 06:27:21,494 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 06:27:21,496 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 06:27:21,497 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 06:27:21,499 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 06:27:21,500 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 06:27:21,501 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 06:27:21,505 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 06:27:21,505 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 06:27:21,505 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 06:27:21,506 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 06:27:21,507 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 06:27:21,508 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 06:27:21,508 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 06:27:21,509 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 06:27:21,509 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 06:27:21,510 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 06:27:21,511 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 06:27:21,511 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 06:27:21,511 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 06:27:21,512 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 06:27:21,512 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 06:27:21,513 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 06:27:21,513 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 06:27:21,514 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2c15dc23-d1fe-4688-b5ab-1a03f0cc2cf3/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-09 06:27:21,541 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 06:27:21,542 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 06:27:21,543 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 06:27:21,543 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 06:27:21,543 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 06:27:21,544 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 06:27:21,544 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 06:27:21,544 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 06:27:21,544 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 06:27:21,545 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 06:27:21,545 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 06:27:21,545 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 06:27:21,546 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 06:27:21,546 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 06:27:21,546 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 06:27:21,546 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 06:27:21,546 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 06:27:21,546 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 06:27:21,547 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 06:27:21,547 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 06:27:21,547 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 06:27:21,547 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 06:27:21,547 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 06:27:21,548 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 06:27:21,548 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 06:27:21,548 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 06:27:21,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 06:27:21,548 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 06:27:21,549 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 06:27:21,549 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 06:27:21,549 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 06:27:21,549 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 06:27:21,549 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 06:27:21,550 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 06:27:21,550 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 06:27:21,550 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_2c15dc23-d1fe-4688-b5ab-1a03f0cc2cf3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_2c15dc23-d1fe-4688-b5ab-1a03f0cc2cf3/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8dab4c89b7bfa0a9578f6aa14537851d09f72688 [2020-12-09 06:27:21,779 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 06:27:21,793 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 06:27:21,795 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 06:27:21,796 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 06:27:21,796 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 06:27:21,797 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2c15dc23-d1fe-4688-b5ab-1a03f0cc2cf3/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound100.c [2020-12-09 06:27:21,837 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2c15dc23-d1fe-4688-b5ab-1a03f0cc2cf3/bin/utaipan/data/2e2691b91/8cd51461336f40f8ac47f9936cc7feed/FLAGd677e582f [2020-12-09 06:27:22,236 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 06:27:22,236 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2c15dc23-d1fe-4688-b5ab-1a03f0cc2cf3/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound100.c [2020-12-09 06:27:22,241 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2c15dc23-d1fe-4688-b5ab-1a03f0cc2cf3/bin/utaipan/data/2e2691b91/8cd51461336f40f8ac47f9936cc7feed/FLAGd677e582f [2020-12-09 06:27:22,251 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2c15dc23-d1fe-4688-b5ab-1a03f0cc2cf3/bin/utaipan/data/2e2691b91/8cd51461336f40f8ac47f9936cc7feed [2020-12-09 06:27:22,253 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 06:27:22,254 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 06:27:22,254 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 06:27:22,254 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 06:27:22,257 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 06:27:22,257 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:27:22" (1/1) ... [2020-12-09 06:27:22,259 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e59348 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:27:22, skipping insertion in model container [2020-12-09 06:27:22,259 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:27:22" (1/1) ... [2020-12-09 06:27:22,263 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 06:27:22,275 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 06:27:22,367 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_2c15dc23-d1fe-4688-b5ab-1a03f0cc2cf3/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound100.c[709,722] [2020-12-09 06:27:22,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 06:27:22,393 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 06:27:22,411 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_2c15dc23-d1fe-4688-b5ab-1a03f0cc2cf3/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound100.c[709,722] [2020-12-09 06:27:22,424 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 06:27:22,435 INFO L208 MainTranslator]: Completed translation [2020-12-09 06:27:22,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:27:22 WrapperNode [2020-12-09 06:27:22,435 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 06:27:22,436 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 06:27:22,436 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 06:27:22,436 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 06:27:22,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:27:22" (1/1) ... [2020-12-09 06:27:22,448 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:27:22" (1/1) ... [2020-12-09 06:27:22,463 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 06:27:22,464 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 06:27:22,464 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 06:27:22,464 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 06:27:22,470 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:27:22" (1/1) ... [2020-12-09 06:27:22,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:27:22" (1/1) ... [2020-12-09 06:27:22,472 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:27:22" (1/1) ... [2020-12-09 06:27:22,472 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:27:22" (1/1) ... [2020-12-09 06:27:22,478 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:27:22" (1/1) ... [2020-12-09 06:27:22,481 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:27:22" (1/1) ... [2020-12-09 06:27:22,482 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:27:22" (1/1) ... [2020-12-09 06:27:22,485 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 06:27:22,485 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 06:27:22,485 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 06:27:22,485 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 06:27:22,486 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:27:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2c15dc23-d1fe-4688-b5ab-1a03f0cc2cf3/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 06:27:22,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 06:27:22,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 06:27:22,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 06:27:22,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 06:27:36,053 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 06:27:36,053 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2020-12-09 06:27:36,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:27:36 BoogieIcfgContainer [2020-12-09 06:27:36,054 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 06:27:36,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 06:27:36,056 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 06:27:36,059 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 06:27:36,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 06:27:22" (1/3) ... [2020-12-09 06:27:36,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76070402 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:27:36, skipping insertion in model container [2020-12-09 06:27:36,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:27:22" (2/3) ... [2020-12-09 06:27:36,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76070402 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:27:36, skipping insertion in model container [2020-12-09 06:27:36,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:27:36" (3/3) ... [2020-12-09 06:27:36,061 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_unwindbound100.c [2020-12-09 06:27:36,072 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 06:27:36,075 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-09 06:27:36,082 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-09 06:27:36,099 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 06:27:36,099 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 06:27:36,099 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 06:27:36,099 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 06:27:36,099 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 06:27:36,100 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 06:27:36,100 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 06:27:36,100 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 06:27:36,108 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-12-09 06:27:36,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 06:27:36,112 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:27:36,112 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 06:27:36,112 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:27:36,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:27:36,116 INFO L82 PathProgramCache]: Analyzing trace with hash 890922791, now seen corresponding path program 1 times [2020-12-09 06:27:36,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:27:36,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [983847029] [2020-12-09 06:27:36,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2c15dc23-d1fe-4688-b5ab-1a03f0cc2cf3/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 06:27:36,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:27:36,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-09 06:27:36,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:27:36,274 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 06:27:36,274 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:27:36,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [983847029] [2020-12-09 06:27:36,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:27:36,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 06:27:36,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083508483] [2020-12-09 06:27:36,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 06:27:36,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:27:36,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 06:27:36,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 06:27:36,293 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2020-12-09 06:27:36,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:27:36,306 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2020-12-09 06:27:36,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 06:27:36,307 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-12-09 06:27:36,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:27:36,312 INFO L225 Difference]: With dead ends: 62 [2020-12-09 06:27:36,312 INFO L226 Difference]: Without dead ends: 28 [2020-12-09 06:27:36,314 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 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 06:27:36,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-12-09 06:27:36,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-12-09 06:27:36,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-09 06:27:36,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-12-09 06:27:36,337 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 6 [2020-12-09 06:27:36,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:27:36,337 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-12-09 06:27:36,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 06:27:36,337 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-12-09 06:27:36,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 06:27:36,337 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:27:36,338 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 06:27:36,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 06:27:36,539 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:27:36,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:27:36,540 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-12-09 06:27:36,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:27:36,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [175455941] [2020-12-09 06:27:36,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2c15dc23-d1fe-4688-b5ab-1a03f0cc2cf3/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 06:27:36,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:27:36,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 06:27:36,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:27:36,806 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 06:27:36,806 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:27:36,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [175455941] [2020-12-09 06:27:36,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:27:36,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 06:27:36,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186817228] [2020-12-09 06:27:36,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 06:27:36,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:27:36,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 06:27:36,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 06:27:36,810 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 5 states. [2020-12-09 06:27:56,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:27:56,308 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2020-12-09 06:27:56,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 06:27:56,309 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2020-12-09 06:27:56,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:27:56,310 INFO L225 Difference]: With dead ends: 39 [2020-12-09 06:27:56,310 INFO L226 Difference]: Without dead ends: 35 [2020-12-09 06:27:56,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-09 06:27:56,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-09 06:27:56,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2020-12-09 06:27:56,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-09 06:27:56,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2020-12-09 06:27:56,316 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 6 [2020-12-09 06:27:56,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:27:56,317 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2020-12-09 06:27:56,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 06:27:56,317 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2020-12-09 06:27:56,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 06:27:56,317 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:27:56,317 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:27:56,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 06:27:56,520 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:27:56,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:27:56,522 INFO L82 PathProgramCache]: Analyzing trace with hash 179657965, now seen corresponding path program 1 times [2020-12-09 06:27:56,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:27:56,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1053428504] [2020-12-09 06:27:56,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2c15dc23-d1fe-4688-b5ab-1a03f0cc2cf3/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 06:27:57,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:27:57,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 06:27:57,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:28:03,040 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 06:28:03,041 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:28:03,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1053428504] [2020-12-09 06:28:03,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:28:03,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 06:28:03,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087214271] [2020-12-09 06:28:03,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 06:28:03,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:28:03,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 06:28:03,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 06:28:03,043 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 5 states. [2020-12-09 06:28:20,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:28:20,619 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2020-12-09 06:28:20,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 06:28:20,716 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-12-09 06:28:20,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:28:20,717 INFO L225 Difference]: With dead ends: 37 [2020-12-09 06:28:20,717 INFO L226 Difference]: Without dead ends: 35 [2020-12-09 06:28:20,718 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-09 06:28:20,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-09 06:28:20,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2020-12-09 06:28:20,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-09 06:28:20,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-12-09 06:28:20,723 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 8 [2020-12-09 06:28:20,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:28:20,724 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-12-09 06:28:20,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 06:28:20,724 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-12-09 06:28:20,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 06:28:20,724 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:28:20,724 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:28:20,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 06:28:20,926 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:28:20,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:28:20,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1248817364, now seen corresponding path program 1 times [2020-12-09 06:28:20,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:28:20,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2027019455] [2020-12-09 06:28:20,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2c15dc23-d1fe-4688-b5ab-1a03f0cc2cf3/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-12-09 06:28:21,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:28:21,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 06:28:21,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:28:21,311 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 06:28:21,311 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:28:21,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2027019455] [2020-12-09 06:28:21,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:28:21,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:28:21,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138453919] [2020-12-09 06:28:21,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 06:28:21,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:28:21,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 06:28:21,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 06:28:21,314 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 4 states. [2020-12-09 06:28:22,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:28:22,861 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2020-12-09 06:28:22,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 06:28:22,862 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-09 06:28:22,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:28:22,863 INFO L225 Difference]: With dead ends: 39 [2020-12-09 06:28:22,863 INFO L226 Difference]: Without dead ends: 29 [2020-12-09 06:28:22,864 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 06:28:22,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-09 06:28:22,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-12-09 06:28:22,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-09 06:28:22,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2020-12-09 06:28:22,870 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 9 [2020-12-09 06:28:22,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:28:22,870 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2020-12-09 06:28:22,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 06:28:22,870 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2020-12-09 06:28:22,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 06:28:22,871 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:28:22,871 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:28:23,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-09 06:28:23,073 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:28:23,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:28:23,075 INFO L82 PathProgramCache]: Analyzing trace with hash 852768432, now seen corresponding path program 1 times [2020-12-09 06:28:23,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:28:23,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [334024064] [2020-12-09 06:28:23,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2c15dc23-d1fe-4688-b5ab-1a03f0cc2cf3/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-12-09 06:28:24,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 06:28:24,447 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 06:29:18,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 06:29:18,119 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 06:29:18,367 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-12-09 06:29:18,367 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 06:29:18,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-12-09 06:29:18,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 06:29:18 BoogieIcfgContainer [2020-12-09 06:29:18,593 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 06:29:18,594 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 06:29:18,594 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 06:29:18,594 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 06:29:18,594 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:27:36" (3/4) ... [2020-12-09 06:29:18,595 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-09 06:29:18,621 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_2c15dc23-d1fe-4688-b5ab-1a03f0cc2cf3/bin/utaipan/witness.graphml [2020-12-09 06:29:18,622 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 06:29:18,623 INFO L168 Benchmark]: Toolchain (without parser) took 116368.48 ms. Allocated memory was 54.5 MB in the beginning and 71.3 MB in the end (delta: 16.8 MB). Free memory was 33.8 MB in the beginning and 33.3 MB in the end (delta: 494.5 kB). Peak memory consumption was 16.2 MB. Max. memory is 16.1 GB. [2020-12-09 06:29:18,623 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 54.5 MB. Free memory was 36.9 MB in the beginning and 36.8 MB in the end (delta: 81.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 06:29:18,624 INFO L168 Benchmark]: CACSL2BoogieTranslator took 180.95 ms. Allocated memory is still 54.5 MB. Free memory was 33.5 MB in the beginning and 37.1 MB in the end (delta: -3.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 06:29:18,624 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.41 ms. Allocated memory is still 54.5 MB. Free memory was 37.1 MB in the beginning and 35.4 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 06:29:18,624 INFO L168 Benchmark]: Boogie Preprocessor took 20.97 ms. Allocated memory is still 54.5 MB. Free memory was 35.4 MB in the beginning and 33.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 06:29:18,625 INFO L168 Benchmark]: RCFGBuilder took 13569.35 ms. Allocated memory was 54.5 MB in the beginning and 71.3 MB in the end (delta: 16.8 MB). Free memory was 33.9 MB in the beginning and 48.2 MB in the end (delta: -14.3 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. [2020-12-09 06:29:18,625 INFO L168 Benchmark]: TraceAbstraction took 102537.26 ms. Allocated memory is still 71.3 MB. Free memory was 47.6 MB in the beginning and 35.4 MB in the end (delta: 12.2 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. [2020-12-09 06:29:18,625 INFO L168 Benchmark]: Witness Printer took 27.99 ms. Allocated memory is still 71.3 MB. Free memory was 35.4 MB in the beginning and 33.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 06:29:18,628 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 54.5 MB. Free memory was 36.9 MB in the beginning and 36.8 MB in the end (delta: 81.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 180.95 ms. Allocated memory is still 54.5 MB. Free memory was 33.5 MB in the beginning and 37.1 MB in the end (delta: -3.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 27.41 ms. Allocated memory is still 54.5 MB. Free memory was 37.1 MB in the beginning and 35.4 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.97 ms. Allocated memory is still 54.5 MB. Free memory was 35.4 MB in the beginning and 33.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 13569.35 ms. Allocated memory was 54.5 MB in the beginning and 71.3 MB in the end (delta: 16.8 MB). Free memory was 33.9 MB in the beginning and 48.2 MB in the end (delta: -14.3 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 102537.26 ms. Allocated memory is still 71.3 MB. Free memory was 47.6 MB in the beginning and 35.4 MB in the end (delta: 12.2 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. * Witness Printer took 27.99 ms. Allocated memory is still 71.3 MB. Free memory was 35.4 MB in the beginning and 33.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L24] int counter = 0; VAL [counter=0] [L26] int r; [L27] double a, x, s; [L28] a = __VERIFIER_nondet_double() [L29] x = a [L30] s = 3.25 [L31] r = 1 VAL [counter=0] [L33] EXPR counter++ VAL [counter=1] [L33] COND TRUE counter++<100 [L17] COND FALSE !(!(cond)) VAL [counter=1] [L17] COND FALSE !(!(cond)) VAL [counter=1] [L17] COND TRUE !(cond) VAL [counter=1] [L19] reach_error() VAL [counter=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 102.4s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 38.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 98 SDtfs, 44 SDslu, 88 SDs, 0 SdLazy, 59 SolverSat, 11 SolverUnsat, 12 SolverUnknown, 0 SolverNotchecked, 37.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred 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, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 2.6s SatisfiabilityAnalysisTime, 5.8s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 673 SizeOfPredicates, 10 NumberOfNonLiveVariables, 140 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 proved your program to be incorrect! Received shutdown request...