./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound100.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/bin/utaipan-q2qaUkNPG8 --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 6cc253eb5ba4e6ae55ed3b220f4e6968aeb67577 ................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound100.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/bin/utaipan-q2qaUkNPG8 --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 6cc253eb5ba4e6ae55ed3b220f4e6968aeb67577 ................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.2.1-dev-4e77c04 [2021-10-13 08:12:34,592 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 08:12:34,596 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 08:12:34,648 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 08:12:34,648 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 08:12:34,650 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 08:12:34,652 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 08:12:34,655 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 08:12:34,657 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 08:12:34,659 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 08:12:34,660 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 08:12:34,662 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 08:12:34,663 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 08:12:34,664 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 08:12:34,666 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 08:12:34,668 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 08:12:34,669 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 08:12:34,671 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 08:12:34,673 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 08:12:34,676 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 08:12:34,679 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 08:12:34,680 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 08:12:34,682 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 08:12:34,683 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 08:12:34,687 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 08:12:34,688 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 08:12:34,688 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 08:12:34,690 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 08:12:34,691 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 08:12:34,692 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 08:12:34,692 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 08:12:34,694 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 08:12:34,695 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 08:12:34,696 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 08:12:34,697 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 08:12:34,698 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 08:12:34,699 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 08:12:34,700 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 08:12:34,700 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 08:12:34,701 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 08:12:34,702 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 08:12:34,703 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 08:12:34,733 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 08:12:34,733 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 08:12:34,734 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 08:12:34,734 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 08:12:34,735 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 08:12:34,738 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 08:12:34,738 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 08:12:34,738 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 08:12:34,738 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 08:12:34,739 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 08:12:34,740 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 08:12:34,740 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 08:12:34,740 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 08:12:34,741 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 08:12:34,741 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 08:12:34,742 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 08:12:34,742 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 08:12:34,742 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 08:12:34,742 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 08:12:34,743 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 08:12:34,743 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 08:12:34,743 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 08:12:34,743 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 08:12:34,744 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 08:12:34,744 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 08:12:34,744 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 08:12:34,745 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 08:12:34,745 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 08:12:34,745 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 08:12:34,747 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 08:12:34,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:12:34,747 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 08:12:34,748 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 08:12:34,748 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 08:12:34,748 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 08:12:34,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 08:12:34,749 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 08:12:34,749 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 08:12:34,749 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 08:12:34,749 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/bin/utaipan-q2qaUkNPG8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6cc253eb5ba4e6ae55ed3b220f4e6968aeb67577 [2021-10-13 08:12:35,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 08:12:35,099 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 08:12:35,103 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 08:12:35,104 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 08:12:35,105 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 08:12:35,106 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound100.c [2021-10-13 08:12:35,171 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/bin/utaipan-q2qaUkNPG8/data/c2d4beb2f/a62d01698d2e4d058fe95e7c5e841a49/FLAG91b57804f [2021-10-13 08:12:35,767 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 08:12:35,768 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound100.c [2021-10-13 08:12:35,776 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/bin/utaipan-q2qaUkNPG8/data/c2d4beb2f/a62d01698d2e4d058fe95e7c5e841a49/FLAG91b57804f [2021-10-13 08:12:36,089 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/bin/utaipan-q2qaUkNPG8/data/c2d4beb2f/a62d01698d2e4d058fe95e7c5e841a49 [2021-10-13 08:12:36,092 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 08:12:36,094 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 08:12:36,096 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 08:12:36,096 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 08:12:36,100 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 08:12:36,101 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:12:36" (1/1) ... [2021-10-13 08:12:36,109 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57150c6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:36, skipping insertion in model container [2021-10-13 08:12:36,111 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:12:36" (1/1) ... [2021-10-13 08:12:36,119 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 08:12:36,142 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 08:12:36,339 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound100.c[709,722] [2021-10-13 08:12:36,393 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:12:36,402 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 08:12:36,415 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound100.c[709,722] [2021-10-13 08:12:36,428 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:12:36,443 INFO L208 MainTranslator]: Completed translation [2021-10-13 08:12:36,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:36 WrapperNode [2021-10-13 08:12:36,444 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 08:12:36,445 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 08:12:36,445 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 08:12:36,446 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 08:12:36,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:36" (1/1) ... [2021-10-13 08:12:36,463 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:36" (1/1) ... [2021-10-13 08:12:36,488 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 08:12:36,489 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 08:12:36,489 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 08:12:36,489 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 08:12:36,498 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:36" (1/1) ... [2021-10-13 08:12:36,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:36" (1/1) ... [2021-10-13 08:12:36,501 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:36" (1/1) ... [2021-10-13 08:12:36,501 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:36" (1/1) ... [2021-10-13 08:12:36,517 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:36" (1/1) ... [2021-10-13 08:12:36,521 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:36" (1/1) ... [2021-10-13 08:12:36,522 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:36" (1/1) ... [2021-10-13 08:12:36,525 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 08:12:36,526 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 08:12:36,526 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 08:12:36,526 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 08:12:36,535 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:36" (1/1) ... [2021-10-13 08:12:36,541 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:12:36,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:12:36,567 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 08:12:36,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 08:12:36,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 08:12:36,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 08:12:36,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 08:12:36,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 08:12:37,030 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 08:12:37,030 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2021-10-13 08:12:37,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:12:37 BoogieIcfgContainer [2021-10-13 08:12:37,033 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 08:12:37,034 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 08:12:37,035 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 08:12:37,038 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 08:12:37,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:12:36" (1/3) ... [2021-10-13 08:12:37,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ac0b442 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:12:37, skipping insertion in model container [2021-10-13 08:12:37,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:36" (2/3) ... [2021-10-13 08:12:37,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ac0b442 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:12:37, skipping insertion in model container [2021-10-13 08:12:37,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:12:37" (3/3) ... [2021-10-13 08:12:37,041 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_valuebound100.c [2021-10-13 08:12:37,047 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 08:12:37,047 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-13 08:12:37,100 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 08:12:37,108 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 08:12:37,109 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-13 08:12:37,139 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 27 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:12:37,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 08:12:37,155 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:12:37,156 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 08:12:37,157 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 08:12:37,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:12:37,172 INFO L82 PathProgramCache]: Analyzing trace with hash 3980175, now seen corresponding path program 1 times [2021-10-13 08:12:37,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:12:37,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353393418] [2021-10-13 08:12:37,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:12:37,188 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:12:37,334 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 08:12:37,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [970261332] [2021-10-13 08:12:37,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:12:37,337 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:12:37,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:12:37,340 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:12:37,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 08:12:37,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 08:12:37,448 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 08:12:37,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 08:12:37,493 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-13 08:12:37,498 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 08:12:37,500 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:12:37,503 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:12:37,504 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:12:37,504 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:12:37,505 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:12:37,506 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:12:37,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 08:12:37,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-13 08:12:37,732 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 08:12:37,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 08:12:37 BoogieIcfgContainer [2021-10-13 08:12:37,748 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 08:12:37,749 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 08:12:37,749 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 08:12:37,749 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 08:12:37,750 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:12:37" (3/4) ... [2021-10-13 08:12:37,753 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 08:12:37,753 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 08:12:37,756 INFO L168 Benchmark]: Toolchain (without parser) took 1660.86 ms. Allocated memory is still 121.6 MB. Free memory was 85.6 MB in the beginning and 66.0 MB in the end (delta: 19.7 MB). Peak memory consumption was 18.4 MB. Max. memory is 16.1 GB. [2021-10-13 08:12:37,756 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 121.6 MB. Free memory was 102.0 MB in the beginning and 101.9 MB in the end (delta: 78.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:12:37,757 INFO L168 Benchmark]: CACSL2BoogieTranslator took 348.39 ms. Allocated memory is still 121.6 MB. Free memory was 85.5 MB in the beginning and 97.4 MB in the end (delta: -12.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 08:12:37,758 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.32 ms. Allocated memory is still 121.6 MB. Free memory was 97.4 MB in the beginning and 95.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:12:37,759 INFO L168 Benchmark]: Boogie Preprocessor took 36.03 ms. Allocated memory is still 121.6 MB. Free memory was 95.8 MB in the beginning and 94.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:12:37,759 INFO L168 Benchmark]: RCFGBuilder took 507.00 ms. Allocated memory is still 121.6 MB. Free memory was 94.5 MB in the beginning and 82.0 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 08:12:37,760 INFO L168 Benchmark]: TraceAbstraction took 713.79 ms. Allocated memory is still 121.6 MB. Free memory was 81.6 MB in the beginning and 66.4 MB in the end (delta: 15.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-13 08:12:37,761 INFO L168 Benchmark]: Witness Printer took 4.63 ms. Allocated memory is still 121.6 MB. Free memory was 66.0 MB in the beginning and 66.0 MB in the end (delta: 2.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:12:37,765 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 121.6 MB. Free memory was 102.0 MB in the beginning and 101.9 MB in the end (delta: 78.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 348.39 ms. Allocated memory is still 121.6 MB. Free memory was 85.5 MB in the beginning and 97.4 MB in the end (delta: -12.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.32 ms. Allocated memory is still 121.6 MB. Free memory was 97.4 MB in the beginning and 95.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.03 ms. Allocated memory is still 121.6 MB. Free memory was 95.8 MB in the beginning and 94.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 507.00 ms. Allocated memory is still 121.6 MB. Free memory was 94.5 MB in the beginning and 82.0 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 713.79 ms. Allocated memory is still 121.6 MB. Free memory was 81.6 MB in the beginning and 66.4 MB in the end (delta: 15.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Witness Printer took 4.63 ms. Allocated memory is still 121.6 MB. Free memory was 66.0 MB in the beginning and 66.0 MB in the end (delta: 2.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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, overapproximation of someBinaryDOUBLEComparisonOperation at line 28. Possible FailurePath: [L25] int r; [L26] double a, x, s; [L27] a = __VERIFIER_nondet_double() [L14] COND FALSE !(!cond) [L29] x = a [L30] s = 3.25 [L31] r = 1 [L33] COND TRUE 1 [L17] COND TRUE !(cond) [L19] reach_error() - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 633.1ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 22.8ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 23.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 10.6ms SsaConstructionTime, 35.3ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 [2021-10-13 08:12:37,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 08:12:40,432 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 08:12:40,436 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 08:12:40,479 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 08:12:40,480 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 08:12:40,485 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 08:12:40,488 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 08:12:40,496 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 08:12:40,500 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 08:12:40,505 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 08:12:40,506 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 08:12:40,507 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 08:12:40,508 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 08:12:40,512 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 08:12:40,514 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 08:12:40,516 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 08:12:40,519 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 08:12:40,521 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 08:12:40,527 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 08:12:40,529 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 08:12:40,536 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 08:12:40,538 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 08:12:40,540 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 08:12:40,543 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 08:12:40,551 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 08:12:40,556 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 08:12:40,557 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 08:12:40,558 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 08:12:40,560 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 08:12:40,561 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 08:12:40,562 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 08:12:40,563 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 08:12:40,566 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 08:12:40,566 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 08:12:40,568 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 08:12:40,569 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 08:12:40,570 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 08:12:40,570 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 08:12:40,571 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 08:12:40,573 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 08:12:40,574 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 08:12:40,581 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 08:12:40,634 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 08:12:40,635 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 08:12:40,636 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 08:12:40,637 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 08:12:40,637 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 08:12:40,637 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 08:12:40,638 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 08:12:40,638 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 08:12:40,638 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 08:12:40,640 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 08:12:40,641 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 08:12:40,641 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 08:12:40,642 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 08:12:40,642 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 08:12:40,642 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 08:12:40,642 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 08:12:40,643 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 08:12:40,643 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 08:12:40,643 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 08:12:40,643 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 08:12:40,643 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 08:12:40,644 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 08:12:40,644 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 08:12:40,644 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 08:12:40,645 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 08:12:40,645 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 08:12:40,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:12:40,645 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 08:12:40,646 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 08:12:40,646 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 08:12:40,646 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 08:12:40,646 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 08:12:40,647 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 08:12:40,647 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 08:12:40,647 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 08:12:40,648 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_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/bin/utaipan-q2qaUkNPG8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6cc253eb5ba4e6ae55ed3b220f4e6968aeb67577 [2021-10-13 08:12:41,155 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 08:12:41,181 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 08:12:41,184 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 08:12:41,185 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 08:12:41,186 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 08:12:41,188 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound100.c [2021-10-13 08:12:41,280 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/bin/utaipan-q2qaUkNPG8/data/b9944be62/16a0c73d808b431db1129957424eae9a/FLAG703c00015 [2021-10-13 08:12:41,992 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 08:12:41,993 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound100.c [2021-10-13 08:12:42,000 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/bin/utaipan-q2qaUkNPG8/data/b9944be62/16a0c73d808b431db1129957424eae9a/FLAG703c00015 [2021-10-13 08:12:42,333 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/bin/utaipan-q2qaUkNPG8/data/b9944be62/16a0c73d808b431db1129957424eae9a [2021-10-13 08:12:42,338 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 08:12:42,340 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 08:12:42,341 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 08:12:42,342 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 08:12:42,348 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 08:12:42,349 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:12:42" (1/1) ... [2021-10-13 08:12:42,352 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79921afa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:42, skipping insertion in model container [2021-10-13 08:12:42,352 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:12:42" (1/1) ... [2021-10-13 08:12:42,366 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 08:12:42,388 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 08:12:42,543 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound100.c[709,722] [2021-10-13 08:12:42,571 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:12:42,585 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 08:12:42,620 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound100.c[709,722] [2021-10-13 08:12:42,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:12:42,683 INFO L208 MainTranslator]: Completed translation [2021-10-13 08:12:42,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:42 WrapperNode [2021-10-13 08:12:42,683 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 08:12:42,684 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 08:12:42,685 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 08:12:42,685 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 08:12:42,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:42" (1/1) ... [2021-10-13 08:12:42,702 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:42" (1/1) ... [2021-10-13 08:12:42,725 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 08:12:42,726 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 08:12:42,727 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 08:12:42,727 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 08:12:42,735 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:42" (1/1) ... [2021-10-13 08:12:42,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:42" (1/1) ... [2021-10-13 08:12:42,740 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:42" (1/1) ... [2021-10-13 08:12:42,741 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:42" (1/1) ... [2021-10-13 08:12:42,749 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:42" (1/1) ... [2021-10-13 08:12:42,753 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:42" (1/1) ... [2021-10-13 08:12:42,756 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:42" (1/1) ... [2021-10-13 08:12:42,760 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 08:12:42,761 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 08:12:42,761 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 08:12:42,761 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 08:12:42,762 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:42" (1/1) ... [2021-10-13 08:12:42,770 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:12:42,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:12:42,808 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 08:12:42,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 08:12:42,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 08:12:42,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 08:12:42,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 08:12:42,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 08:12:55,046 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 08:12:55,047 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2021-10-13 08:12:55,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:12:55 BoogieIcfgContainer [2021-10-13 08:12:55,049 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 08:12:55,052 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 08:12:55,052 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 08:12:55,055 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 08:12:55,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:12:42" (1/3) ... [2021-10-13 08:12:55,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b1d44a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:12:55, skipping insertion in model container [2021-10-13 08:12:55,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:42" (2/3) ... [2021-10-13 08:12:55,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b1d44a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:12:55, skipping insertion in model container [2021-10-13 08:12:55,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:12:55" (3/3) ... [2021-10-13 08:12:55,063 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_valuebound100.c [2021-10-13 08:12:55,068 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 08:12:55,068 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-13 08:12:55,136 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 08:12:55,145 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 08:12:55,145 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-13 08:12:55,159 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 32 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:12:55,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 08:12:55,165 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:12:55,165 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:12:55,166 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 08:12:55,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:12:55,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2021-10-13 08:12:55,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:12:55,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1652070894] [2021-10-13 08:12:55,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:12:55,196 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:12:55,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:12:55,203 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:12:55,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 08:12:55,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:12:55,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 08:12:55,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:12:55,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:12:55,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:12:55,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:12:55,557 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:12:55,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1652070894] [2021-10-13 08:12:55,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1652070894] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:12:55,558 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:12:55,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 08:12:55,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431007873] [2021-10-13 08:12:55,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 08:12:55,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:12:55,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 08:12:55,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 08:12:55,587 INFO L87 Difference]: Start difference. First operand has 33 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 32 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:12:55,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:12:55,607 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2021-10-13 08:12:55,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 08:12:55,609 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-13 08:12:55,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:12:55,619 INFO L225 Difference]: With dead ends: 63 [2021-10-13 08:12:55,619 INFO L226 Difference]: Without dead ends: 29 [2021-10-13 08:12:55,622 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 08:12:55,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-13 08:12:55,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-10-13 08:12:55,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 28 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:12:55,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2021-10-13 08:12:55,663 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 7 [2021-10-13 08:12:55,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:12:55,664 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2021-10-13 08:12:55,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:12:55,665 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2021-10-13 08:12:55,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 08:12:55,665 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:12:55,666 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:12:55,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 08:12:55,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:12:55,885 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 08:12:55,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:12:55,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2021-10-13 08:12:55,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:12:55,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [997450795] [2021-10-13 08:12:55,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:12:55,888 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:12:55,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:12:55,890 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:12:55,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 08:12:56,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:12:56,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 08:12:56,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:12:56,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:12:56,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:13:03,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:13:03,255 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:13:03,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [997450795] [2021-10-13 08:13:03,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [997450795] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:13:03,256 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:13:03,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-13 08:13:03,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787197402] [2021-10-13 08:13:03,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 08:13:03,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:13:03,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 08:13:03,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-13 08:13:03,277 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:35,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:13:35,073 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2021-10-13 08:13:35,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 08:13:35,074 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-13 08:13:35,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:13:35,075 INFO L225 Difference]: With dead ends: 34 [2021-10-13 08:13:35,075 INFO L226 Difference]: Without dead ends: 32 [2021-10-13 08:13:35,076 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 6375.9ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-13 08:13:35,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-13 08:13:35,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2021-10-13 08:13:35,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 25 states have (on average 1.24) internal successors, (31), 30 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:35,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2021-10-13 08:13:35,084 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 7 [2021-10-13 08:13:35,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:13:35,085 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2021-10-13 08:13:35,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:35,085 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2021-10-13 08:13:35,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 08:13:35,086 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:13:35,086 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:13:35,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 08:13:35,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:13:35,288 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 08:13:35,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:13:35,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1186787538, now seen corresponding path program 1 times [2021-10-13 08:13:35,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:13:35,290 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1030518896] [2021-10-13 08:13:35,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:13:35,290 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:13:35,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:13:35,292 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:13:35,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 08:13:36,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:13:36,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 08:13:36,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:13:38,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:13:38,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:13:45,057 WARN L838 $PredicateComparison]: unable to prove that (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) is different from false [2021-10-13 08:13:47,100 WARN L860 $PredicateComparison]: unable to prove that (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) is different from true [2021-10-13 08:14:19,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:14:19,165 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:14:19,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1030518896] [2021-10-13 08:14:19,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1030518896] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:14:19,165 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:14:19,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-10-13 08:14:19,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305810116] [2021-10-13 08:14:19,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 08:14:19,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:14:19,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 08:14:19,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=62, Unknown=2, NotChecked=16, Total=110 [2021-10-13 08:14:19,168 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:14:23,277 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.geq c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (.cse1 (fp.leq c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv100 32))))) (and (= c_ULTIMATE.start_main_~r~0 (_ bv1 32)) .cse0 .cse1 (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~x~0) (or (and (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)) (or (not .cse1) (not .cse0))) (and .cse0 (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) .cse1)) (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse2 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-10-13 08:14:25,934 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~r~0 (_ bv1 32)) (fp.geq c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (fp.leq c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv100 32))) (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~x~0) (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-13 08:15:10,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:15:10,468 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2021-10-13 08:15:10,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 08:15:10,469 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-13 08:15:10,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:15:10,470 INFO L225 Difference]: With dead ends: 36 [2021-10-13 08:15:10,470 INFO L226 Difference]: Without dead ends: 34 [2021-10-13 08:15:10,471 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 30670.7ms TimeCoverageRelationStatistics Valid=41, Invalid=77, Unknown=4, NotChecked=60, Total=182 [2021-10-13 08:15:10,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-13 08:15:10,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2021-10-13 08:15:10,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 32 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:15:10,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2021-10-13 08:15:10,479 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 9 [2021-10-13 08:15:10,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:15:10,479 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2021-10-13 08:15:10,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:15:10,480 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2021-10-13 08:15:10,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 08:15:10,481 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:15:10,481 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:15:10,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 08:15:10,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:15:10,682 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 08:15:10,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:15:10,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1958320619, now seen corresponding path program 1 times [2021-10-13 08:15:10,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:15:10,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [817903509] [2021-10-13 08:15:10,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:15:10,685 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:15:10,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:15:10,688 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:15:10,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 08:15:12,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 08:15:12,775 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 08:17:00,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 08:17:01,556 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-13 08:17:01,557 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 08:17:01,558 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:17:01,559 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:17:01,559 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:17:01,559 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:17:01,560 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:17:01,560 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:17:01,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 08:17:01,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:17:01,766 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 08:17:01,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 08:17:01 BoogieIcfgContainer [2021-10-13 08:17:01,805 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 08:17:01,806 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 08:17:01,806 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 08:17:01,806 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 08:17:01,807 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:12:55" (3/4) ... [2021-10-13 08:17:01,809 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 08:17:01,876 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 08:17:01,877 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 08:17:01,879 INFO L168 Benchmark]: Toolchain (without parser) took 259537.73 ms. Allocated memory was 65.0 MB in the beginning and 83.9 MB in the end (delta: 18.9 MB). Free memory was 45.1 MB in the beginning and 47.4 MB in the end (delta: -2.4 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. [2021-10-13 08:17:01,879 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 65.0 MB. Free memory was 46.3 MB in the beginning and 46.3 MB in the end (delta: 48.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:17:01,880 INFO L168 Benchmark]: CACSL2BoogieTranslator took 342.59 ms. Allocated memory is still 65.0 MB. Free memory was 44.9 MB in the beginning and 47.9 MB in the end (delta: -3.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 08:17:01,881 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.39 ms. Allocated memory is still 65.0 MB. Free memory was 47.7 MB in the beginning and 46.1 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:17:01,881 INFO L168 Benchmark]: Boogie Preprocessor took 33.87 ms. Allocated memory is still 65.0 MB. Free memory was 46.1 MB in the beginning and 44.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:17:01,885 INFO L168 Benchmark]: RCFGBuilder took 12288.59 ms. Allocated memory is still 65.0 MB. Free memory was 44.5 MB in the beginning and 33.0 MB in the end (delta: 11.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 08:17:01,888 INFO L168 Benchmark]: TraceAbstraction took 246753.47 ms. Allocated memory was 65.0 MB in the beginning and 83.9 MB in the end (delta: 18.9 MB). Free memory was 32.4 MB in the beginning and 49.6 MB in the end (delta: -17.1 MB). Peak memory consumption was 2.9 MB. Max. memory is 16.1 GB. [2021-10-13 08:17:01,888 INFO L168 Benchmark]: Witness Printer took 70.99 ms. Allocated memory is still 83.9 MB. Free memory was 49.6 MB in the beginning and 47.4 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:17:01,891 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 65.0 MB. Free memory was 46.3 MB in the beginning and 46.3 MB in the end (delta: 48.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 342.59 ms. Allocated memory is still 65.0 MB. Free memory was 44.9 MB in the beginning and 47.9 MB in the end (delta: -3.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.39 ms. Allocated memory is still 65.0 MB. Free memory was 47.7 MB in the beginning and 46.1 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.87 ms. Allocated memory is still 65.0 MB. Free memory was 46.1 MB in the beginning and 44.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 12288.59 ms. Allocated memory is still 65.0 MB. Free memory was 44.5 MB in the beginning and 33.0 MB in the end (delta: 11.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 246753.47 ms. Allocated memory was 65.0 MB in the beginning and 83.9 MB in the end (delta: 18.9 MB). Free memory was 32.4 MB in the beginning and 49.6 MB in the end (delta: -17.1 MB). Peak memory consumption was 2.9 MB. Max. memory is 16.1 GB. * Witness Printer took 70.99 ms. Allocated memory is still 83.9 MB. Free memory was 49.6 MB in the beginning and 47.4 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L25] int r; [L26] double a, x, s; [L27] a = __VERIFIER_nondet_double() [L14] COND FALSE !(!cond) [L29] x = a [L30] s = 3.25 [L31] r = 1 [L33] COND TRUE 1 [L17] COND FALSE !(!(cond)) [L17] COND FALSE !(!(cond)) [L17] COND TRUE !(cond) [L19] reach_error() - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 246630.1ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 11.3ms, AutomataDifference: 83159.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 83 SDtfs, 19 SDslu, 110 SDs, 0 SdLazy, 75 SolverSat, 10 SolverUnsat, 30 SolverUnknown, 0 SolverNotchecked, 76293.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 37046.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 38.2ms AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 34.9ms SsaConstructionTime, 3064.7ms SatisfiabilityAnalysisTime, 50416.1ms InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 327 SizeOfPredicates, 11 NumberOfNonLiveVariables, 102 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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! [2021-10-13 08:17:02,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125892c7-5f08-4667-9d5a-bd876c8865b2/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...