./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_unwindbound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d6f9ac-f789-4b8e-86c2-dd579b1cce9e/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d6f9ac-f789-4b8e-86c2-dd579b1cce9e/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d6f9ac-f789-4b8e-86c2-dd579b1cce9e/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d6f9ac-f789-4b8e-86c2-dd579b1cce9e/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_unwindbound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d6f9ac-f789-4b8e-86c2-dd579b1cce9e/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d6f9ac-f789-4b8e-86c2-dd579b1cce9e/bin/utaipan-SDwSMHVbGG --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 a4e999359b895f3090fa3a0a394d4e8b87ebbe801b1ab5ed9c028edec94c7c83 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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-b2eff8b [2021-10-29 04:32:57,615 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 04:32:57,619 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 04:32:57,679 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 04:32:57,680 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 04:32:57,684 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 04:32:57,686 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 04:32:57,690 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 04:32:57,693 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 04:32:57,701 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 04:32:57,702 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 04:32:57,704 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 04:32:57,704 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 04:32:57,707 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 04:32:57,710 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 04:32:57,714 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 04:32:57,716 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 04:32:57,718 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 04:32:57,720 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 04:32:57,728 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 04:32:57,730 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 04:32:57,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 04:32:57,735 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 04:32:57,736 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 04:32:57,746 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 04:32:57,746 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 04:32:57,747 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 04:32:57,749 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 04:32:57,749 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 04:32:57,751 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 04:32:57,751 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 04:32:57,752 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 04:32:57,755 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 04:32:57,756 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 04:32:57,758 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 04:32:57,758 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 04:32:57,759 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 04:32:57,759 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 04:32:57,759 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 04:32:57,760 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 04:32:57,761 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 04:32:57,766 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d6f9ac-f789-4b8e-86c2-dd579b1cce9e/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 04:32:57,810 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 04:32:57,811 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 04:32:57,812 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 04:32:57,812 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 04:32:57,813 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 04:32:57,813 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 04:32:57,813 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 04:32:57,813 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 04:32:57,813 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 04:32:57,814 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 04:32:57,815 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 04:32:57,815 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 04:32:57,815 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 04:32:57,816 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 04:32:57,816 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 04:32:57,817 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 04:32:57,817 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 04:32:57,818 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 04:32:57,818 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 04:32:57,818 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 04:32:57,818 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 04:32:57,818 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 04:32:57,819 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 04:32:57,819 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 04:32:57,819 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 04:32:57,819 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 04:32:57,820 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 04:32:57,820 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 04:32:57,820 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 04:32:57,822 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 04:32:57,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:32:57,823 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 04:32:57,824 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 04:32:57,824 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 04:32:57,824 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 04:32:57,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 04:32:57,824 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 04:32:57,825 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 04:32:57,825 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 04:32:57,825 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_06d6f9ac-f789-4b8e-86c2-dd579b1cce9e/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d6f9ac-f789-4b8e-86c2-dd579b1cce9e/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a4e999359b895f3090fa3a0a394d4e8b87ebbe801b1ab5ed9c028edec94c7c83 [2021-10-29 04:32:58,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 04:32:58,169 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 04:32:58,172 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 04:32:58,173 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 04:32:58,174 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 04:32:58,175 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d6f9ac-f789-4b8e-86c2-dd579b1cce9e/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_unwindbound1.c [2021-10-29 04:32:58,249 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d6f9ac-f789-4b8e-86c2-dd579b1cce9e/bin/utaipan-SDwSMHVbGG/data/7c4f3d7cb/789e0b17d1434293b297e1bbf7fc7320/FLAGbc001f8a6 [2021-10-29 04:32:58,817 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 04:32:58,817 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d6f9ac-f789-4b8e-86c2-dd579b1cce9e/sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_unwindbound1.c [2021-10-29 04:32:58,833 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d6f9ac-f789-4b8e-86c2-dd579b1cce9e/bin/utaipan-SDwSMHVbGG/data/7c4f3d7cb/789e0b17d1434293b297e1bbf7fc7320/FLAGbc001f8a6 [2021-10-29 04:32:59,144 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d6f9ac-f789-4b8e-86c2-dd579b1cce9e/bin/utaipan-SDwSMHVbGG/data/7c4f3d7cb/789e0b17d1434293b297e1bbf7fc7320 [2021-10-29 04:32:59,147 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 04:32:59,149 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 04:32:59,151 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 04:32:59,151 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 04:32:59,155 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 04:32:59,156 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:32:59" (1/1) ... [2021-10-29 04:32:59,157 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49d7f01a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:32:59, skipping insertion in model container [2021-10-29 04:32:59,158 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:32:59" (1/1) ... [2021-10-29 04:32:59,165 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 04:32:59,183 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 04:32:59,379 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_06d6f9ac-f789-4b8e-86c2-dd579b1cce9e/sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_unwindbound1.c[535,548] [2021-10-29 04:32:59,403 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:32:59,417 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 04:32:59,437 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_06d6f9ac-f789-4b8e-86c2-dd579b1cce9e/sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_unwindbound1.c[535,548] [2021-10-29 04:32:59,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:32:59,462 INFO L208 MainTranslator]: Completed translation [2021-10-29 04:32:59,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:32:59 WrapperNode [2021-10-29 04:32:59,462 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 04:32:59,463 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 04:32:59,463 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 04:32:59,463 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 04:32:59,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:32:59" (1/1) ... [2021-10-29 04:32:59,476 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:32:59" (1/1) ... [2021-10-29 04:32:59,499 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 04:32:59,500 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 04:32:59,500 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 04:32:59,500 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 04:32:59,508 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:32:59" (1/1) ... [2021-10-29 04:32:59,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:32:59" (1/1) ... [2021-10-29 04:32:59,511 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:32:59" (1/1) ... [2021-10-29 04:32:59,511 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:32:59" (1/1) ... [2021-10-29 04:32:59,516 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:32:59" (1/1) ... [2021-10-29 04:32:59,520 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:32:59" (1/1) ... [2021-10-29 04:32:59,522 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:32:59" (1/1) ... [2021-10-29 04:32:59,524 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 04:32:59,525 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 04:32:59,526 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 04:32:59,526 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 04:32:59,527 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:32:59" (1/1) ... [2021-10-29 04:32:59,547 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:32:59,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d6f9ac-f789-4b8e-86c2-dd579b1cce9e/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:32:59,581 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d6f9ac-f789-4b8e-86c2-dd579b1cce9e/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 04:32:59,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d6f9ac-f789-4b8e-86c2-dd579b1cce9e/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 04:32:59,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 04:32:59,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 04:32:59,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 04:32:59,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 04:33:00,113 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 04:33:00,113 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2021-10-29 04:33:00,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:33:00 BoogieIcfgContainer [2021-10-29 04:33:00,115 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 04:33:00,117 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 04:33:00,117 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 04:33:00,123 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 04:33:00,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:32:59" (1/3) ... [2021-10-29 04:33:00,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fd0fb7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:33:00, skipping insertion in model container [2021-10-29 04:33:00,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:32:59" (2/3) ... [2021-10-29 04:33:00,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fd0fb7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:33:00, skipping insertion in model container [2021-10-29 04:33:00,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:33:00" (3/3) ... [2021-10-29 04:33:00,126 INFO L111 eAbstractionObserver]: Analyzing ICFG fermat1-ll_unwindbound1.c [2021-10-29 04:33:00,135 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 04:33:00,135 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-10-29 04:33:00,202 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 04:33:00,213 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, mAutomataTypeConcurrency=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 [2021-10-29 04:33:00,213 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-29 04:33:00,233 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 20 states have (on average 1.85) internal successors, (37), 24 states have internal predecessors, (37), 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) [2021-10-29 04:33:00,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-29 04:33:00,250 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:33:00,251 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-29 04:33:00,252 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-10-29 04:33:00,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:33:00,258 INFO L85 PathProgramCache]: Analyzing trace with hash 145241150, now seen corresponding path program 1 times [2021-10-29 04:33:00,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:33:00,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239190566] [2021-10-29 04:33:00,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:33:00,270 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:33:00,357 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 04:33:00,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [381048141] [2021-10-29 04:33:00,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:33:00,359 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:33:00,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d6f9ac-f789-4b8e-86c2-dd579b1cce9e/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:33:00,361 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d6f9ac-f789-4b8e-86c2-dd579b1cce9e/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:33:00,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d6f9ac-f789-4b8e-86c2-dd579b1cce9e/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-29 04:33:00,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:33:00,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-29 04:33:00,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:33:00,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:33:00,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:33:00,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:33:00,529 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:33:00,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239190566] [2021-10-29 04:33:00,530 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 04:33:00,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381048141] [2021-10-29 04:33:00,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381048141] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:33:00,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:33:00,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-29 04:33:00,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927067010] [2021-10-29 04:33:00,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 04:33:00,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:33:00,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 04:33:00,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 04:33:00,566 INFO L87 Difference]: Start difference. First operand has 25 states, 20 states have (on average 1.85) internal successors, (37), 24 states have internal predecessors, (37), 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 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-10-29 04:33:00,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:33:00,586 INFO L93 Difference]: Finished difference Result 49 states and 73 transitions. [2021-10-29 04:33:00,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 04:33:00,588 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2021-10-29 04:33:00,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:33:00,596 INFO L225 Difference]: With dead ends: 49 [2021-10-29 04:33:00,597 INFO L226 Difference]: Without dead ends: 23 [2021-10-29 04:33:00,600 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 04:33:00,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-29 04:33:00,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-10-29 04:33:00,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 22 states have internal predecessors, (28), 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) [2021-10-29 04:33:00,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2021-10-29 04:33:00,639 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 5 [2021-10-29 04:33:00,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:33:00,639 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2021-10-29 04:33:00,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-10-29 04:33:00,640 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2021-10-29 04:33:00,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-29 04:33:00,641 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:33:00,642 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-29 04:33:00,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d6f9ac-f789-4b8e-86c2-dd579b1cce9e/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-29 04:33:00,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d6f9ac-f789-4b8e-86c2-dd579b1cce9e/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:33:00,859 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-10-29 04:33:00,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:33:00,860 INFO L85 PathProgramCache]: Analyzing trace with hash 142873761, now seen corresponding path program 1 times [2021-10-29 04:33:00,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:33:00,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513431660] [2021-10-29 04:33:00,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:33:00,861 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:33:00,866 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 04:33:00,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1433588991] [2021-10-29 04:33:00,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:33:00,867 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:33:00,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d6f9ac-f789-4b8e-86c2-dd579b1cce9e/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:33:00,868 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d6f9ac-f789-4b8e-86c2-dd579b1cce9e/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:33:00,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d6f9ac-f789-4b8e-86c2-dd579b1cce9e/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-29 04:33:00,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:33:00,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-29 04:33:00,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:33:01,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:33:01,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:33:08,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:33:08,567 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:33:08,567 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513431660] [2021-10-29 04:33:08,567 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 04:33:08,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433588991] [2021-10-29 04:33:08,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433588991] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:33:08,568 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:33:08,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-29 04:33:08,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030716735] [2021-10-29 04:33:08,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 04:33:08,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:33:08,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 04:33:08,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=12, Unknown=1, NotChecked=0, Total=20 [2021-10-29 04:33:08,571 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-10-29 04:33:18,269 WARN L207 SmtUtils]: Spent 9.69 s on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-10-29 04:33:24,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:33:24,856 INFO L93 Difference]: Finished difference Result 42 states and 56 transitions. [2021-10-29 04:33:24,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 04:33:24,857 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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 5 [2021-10-29 04:33:24,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:33:24,858 INFO L225 Difference]: With dead ends: 42 [2021-10-29 04:33:24,858 INFO L226 Difference]: Without dead ends: 36 [2021-10-29 04:33:24,859 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 21.4s TimeCoverageRelationStatistics Valid=22, Invalid=33, Unknown=1, NotChecked=0, Total=56 [2021-10-29 04:33:24,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-29 04:33:24,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 17. [2021-10-29 04:33:24,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 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) [2021-10-29 04:33:24,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2021-10-29 04:33:24,865 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 22 transitions. Word has length 5 [2021-10-29 04:33:24,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:33:24,865 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 22 transitions. [2021-10-29 04:33:24,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-10-29 04:33:24,866 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 22 transitions. [2021-10-29 04:33:24,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 04:33:24,866 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:33:24,866 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-29 04:33:24,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d6f9ac-f789-4b8e-86c2-dd579b1cce9e/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-29 04:33:25,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d6f9ac-f789-4b8e-86c2-dd579b1cce9e/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:33:25,090 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-10-29 04:33:25,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:33:25,090 INFO L85 PathProgramCache]: Analyzing trace with hash 134130281, now seen corresponding path program 1 times [2021-10-29 04:33:25,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:33:25,091 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34404113] [2021-10-29 04:33:25,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:33:25,091 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:33:25,099 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 04:33:25,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [958664312] [2021-10-29 04:33:25,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:33:25,103 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:33:25,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d6f9ac-f789-4b8e-86c2-dd579b1cce9e/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:33:25,104 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d6f9ac-f789-4b8e-86c2-dd579b1cce9e/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:33:25,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d6f9ac-f789-4b8e-86c2-dd579b1cce9e/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-29 04:33:25,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:33:25,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 04:33:25,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:33:25,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:33:25,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:33:25,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:33:25,195 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:33:25,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34404113] [2021-10-29 04:33:25,195 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 04:33:25,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958664312] [2021-10-29 04:33:25,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958664312] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:33:25,196 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:33:25,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-29 04:33:25,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812074411] [2021-10-29 04:33:25,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 04:33:25,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:33:25,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 04:33:25,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 04:33:25,198 INFO L87 Difference]: Start difference. First operand 17 states and 22 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-10-29 04:33:25,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:33:25,219 INFO L93 Difference]: Finished difference Result 23 states and 28 transitions. [2021-10-29 04:33:25,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 04:33:25,220 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2021-10-29 04:33:25,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:33:25,220 INFO L225 Difference]: With dead ends: 23 [2021-10-29 04:33:25,220 INFO L226 Difference]: Without dead ends: 19 [2021-10-29 04:33:25,221 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 04:33:25,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-29 04:33:25,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-10-29 04:33:25,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 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) [2021-10-29 04:33:25,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2021-10-29 04:33:25,227 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 6 [2021-10-29 04:33:25,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:33:25,227 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2021-10-29 04:33:25,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-10-29 04:33:25,228 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2021-10-29 04:33:25,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-29 04:33:25,228 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:33:25,229 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:33:25,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d6f9ac-f789-4b8e-86c2-dd579b1cce9e/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-29 04:33:25,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d6f9ac-f789-4b8e-86c2-dd579b1cce9e/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:33:25,438 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-10-29 04:33:25,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:33:25,438 INFO L85 PathProgramCache]: Analyzing trace with hash 44578946, now seen corresponding path program 1 times [2021-10-29 04:33:25,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:33:25,439 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805481515] [2021-10-29 04:33:25,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:33:25,439 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:33:25,442 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 04:33:25,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1692846914] [2021-10-29 04:33:25,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:33:25,443 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:33:25,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d6f9ac-f789-4b8e-86c2-dd579b1cce9e/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:33:25,444 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d6f9ac-f789-4b8e-86c2-dd579b1cce9e/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:33:25,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d6f9ac-f789-4b8e-86c2-dd579b1cce9e/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-29 04:33:25,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:33:25,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-29 04:33:25,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:33:25,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:33:25,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:33:25,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:33:25,739 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:33:25,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805481515] [2021-10-29 04:33:25,739 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 04:33:25,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692846914] [2021-10-29 04:33:25,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692846914] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:33:25,760 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:33:25,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2021-10-29 04:33:25,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157886322] [2021-10-29 04:33:25,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-29 04:33:25,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:33:25,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-29 04:33:25,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-29 04:33:25,762 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 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) [2021-10-29 04:33:25,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:33:25,921 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2021-10-29 04:33:25,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 04:33:25,923 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 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 8 [2021-10-29 04:33:25,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:33:25,923 INFO L225 Difference]: With dead ends: 23 [2021-10-29 04:33:25,923 INFO L226 Difference]: Without dead ends: 19 [2021-10-29 04:33:25,924 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-10-29 04:33:25,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-29 04:33:25,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-10-29 04:33:25,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 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) [2021-10-29 04:33:25,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2021-10-29 04:33:25,929 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 8 [2021-10-29 04:33:25,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:33:25,929 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2021-10-29 04:33:25,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 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) [2021-10-29 04:33:25,930 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2021-10-29 04:33:25,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-29 04:33:25,930 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:33:25,931 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:33:25,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d6f9ac-f789-4b8e-86c2-dd579b1cce9e/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-29 04:33:26,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d6f9ac-f789-4b8e-86c2-dd579b1cce9e/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:33:26,146 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-10-29 04:33:26,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:33:26,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1028231639, now seen corresponding path program 1 times [2021-10-29 04:33:26,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:33:26,147 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956326906] [2021-10-29 04:33:26,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:33:26,147 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:33:26,153 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 04:33:26,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [89134759] [2021-10-29 04:33:26,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:33:26,154 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:33:26,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d6f9ac-f789-4b8e-86c2-dd579b1cce9e/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:33:26,157 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d6f9ac-f789-4b8e-86c2-dd579b1cce9e/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:33:26,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d6f9ac-f789-4b8e-86c2-dd579b1cce9e/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-29 04:33:26,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 04:33:26,239 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 04:33:26,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 04:33:26,274 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-29 04:33:26,275 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 04:33:26,276 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:33:26,278 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:33:26,278 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:33:26,278 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:33:26,316 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d6f9ac-f789-4b8e-86c2-dd579b1cce9e/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-29 04:33:26,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d6f9ac-f789-4b8e-86c2-dd579b1cce9e/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:33:26,500 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2021-10-29 04:33:26,504 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 04:33:26,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 04:33:26 BoogieIcfgContainer [2021-10-29 04:33:26,541 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 04:33:26,541 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 04:33:26,542 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 04:33:26,542 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 04:33:26,543 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:33:00" (3/4) ... [2021-10-29 04:33:26,545 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-29 04:33:26,598 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d6f9ac-f789-4b8e-86c2-dd579b1cce9e/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 04:33:26,598 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 04:33:26,599 INFO L168 Benchmark]: Toolchain (without parser) took 27449.85 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 78.8 MB in the beginning and 92.8 MB in the end (delta: -14.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.1 GB. [2021-10-29 04:33:26,600 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 113.2 MB. Free memory was 89.0 MB in the beginning and 89.0 MB in the end (delta: 30.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:33:26,600 INFO L168 Benchmark]: CACSL2BoogieTranslator took 311.64 ms. Allocated memory is still 113.2 MB. Free memory was 78.6 MB in the beginning and 88.5 MB in the end (delta: -9.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 04:33:26,601 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.94 ms. Allocated memory is still 113.2 MB. Free memory was 87.9 MB in the beginning and 86.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:33:26,602 INFO L168 Benchmark]: Boogie Preprocessor took 24.94 ms. Allocated memory is still 113.2 MB. Free memory was 86.4 MB in the beginning and 85.3 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:33:26,602 INFO L168 Benchmark]: RCFGBuilder took 590.20 ms. Allocated memory is still 113.2 MB. Free memory was 85.3 MB in the beginning and 69.6 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-29 04:33:26,603 INFO L168 Benchmark]: TraceAbstraction took 26423.80 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 69.1 MB in the beginning and 95.7 MB in the end (delta: -26.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:33:26,603 INFO L168 Benchmark]: Witness Printer took 56.85 ms. Allocated memory is still 136.3 MB. Free memory was 95.7 MB in the beginning and 92.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-29 04:33:26,606 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 113.2 MB. Free memory was 89.0 MB in the beginning and 89.0 MB in the end (delta: 30.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 311.64 ms. Allocated memory is still 113.2 MB. Free memory was 78.6 MB in the beginning and 88.5 MB in the end (delta: -9.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.94 ms. Allocated memory is still 113.2 MB. Free memory was 87.9 MB in the beginning and 86.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.94 ms. Allocated memory is still 113.2 MB. Free memory was 86.4 MB in the beginning and 85.3 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 590.20 ms. Allocated memory is still 113.2 MB. Free memory was 85.3 MB in the beginning and 69.6 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 26423.80 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 69.1 MB in the beginning and 95.7 MB in the end (delta: -26.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 56.85 ms. Allocated memory is still 136.3 MB. Free memory was 95.7 MB in the beginning and 92.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 14]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int counter = 0; [L21] int A, R; [L22] long long u, v, r; [L23] A = __VERIFIER_nondet_int() [L24] R = __VERIFIER_nondet_int() [L9] COND FALSE !(!cond) [L9] COND FALSE !(!cond) [L29] u = ((long long) 2 * R) + 1 [L30] v = 1 [L31] r = ((long long) R * R) - A VAL [counter=0] [L34] EXPR counter++ VAL [counter=1] [L34] COND TRUE counter++<1 [L12] COND FALSE !(!(cond)) VAL [counter=1] [L36] COND FALSE !(!(r != 0)) VAL [counter=1] [L39] EXPR counter++ VAL [counter=2] [L39] COND FALSE !(counter++<1) [L47] EXPR counter++ VAL [counter=3] [L47] COND FALSE !(counter++<1) [L34] EXPR counter++ VAL [counter=4] [L34] COND FALSE !(counter++<1) [L12] COND TRUE !(cond) VAL [counter=4] [L14] reach_error() VAL [counter=4] - UnprovableResult [Line: 14]: 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: 14]: 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: 14]: 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, 25 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 26.3s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 16.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 71 SDtfs, 128 SDslu, 61 SDs, 0 SdLazy, 74 SolverSat, 50 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 21.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 19 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 7.9s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 306 SizeOfPredicates, 17 NumberOfNonLiveVariables, 247 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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! [2021-10-29 04:33:26,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06d6f9ac-f789-4b8e-86c2-dd579b1cce9e/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...