./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/gsv2008.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55857643-6839-4961-a62a-5d2b77115d08/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55857643-6839-4961-a62a-5d2b77115d08/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55857643-6839-4961-a62a-5d2b77115d08/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55857643-6839-4961-a62a-5d2b77115d08/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-lit/gsv2008.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55857643-6839-4961-a62a-5d2b77115d08/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55857643-6839-4961-a62a-5d2b77115d08/bin/utaipan-9zjyvhn0QE --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 d7b840784ed09a8ba534cc1991a3b26e3517ca5684a3a750b52e1a997eff0418 ............................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 10:36:00,573 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:36:00,576 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:36:00,619 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:36:00,620 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:36:00,621 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:36:00,624 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:36:00,627 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:36:00,630 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:36:00,632 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:36:00,633 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:36:00,635 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:36:00,636 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:36:00,638 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:36:00,642 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:36:00,648 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:36:00,652 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:36:00,658 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:36:00,661 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:36:00,667 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:36:00,676 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:36:00,685 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:36:00,687 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:36:00,688 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:36:00,693 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:36:00,700 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:36:00,701 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:36:00,702 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:36:00,703 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:36:00,710 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:36:00,710 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:36:00,711 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:36:00,713 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:36:00,714 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:36:00,717 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:36:00,718 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:36:00,720 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:36:00,721 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:36:00,722 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:36:00,723 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:36:00,724 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:36:00,725 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55857643-6839-4961-a62a-5d2b77115d08/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 10:36:00,781 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:36:00,784 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:36:00,786 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:36:00,787 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:36:00,787 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:36:00,787 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:36:00,788 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 10:36:00,788 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:36:00,788 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:36:00,789 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 10:36:00,790 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 10:36:00,791 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:36:00,791 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 10:36:00,791 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 10:36:00,792 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 10:36:00,793 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:36:00,793 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:36:00,793 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:36:00,794 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:36:00,794 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:36:00,794 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 10:36:00,794 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:36:00,795 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 10:36:00,795 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:36:00,795 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:36:00,796 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 10:36:00,796 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:36:00,796 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 10:36:00,797 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:36:00,799 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:36:00,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:36:00,800 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:36:00,801 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:36:00,801 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 10:36:00,801 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 10:36:00,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 10:36:00,802 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 10:36:00,802 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:36:00,803 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:36:00,803 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_55857643-6839-4961-a62a-5d2b77115d08/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55857643-6839-4961-a62a-5d2b77115d08/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7b840784ed09a8ba534cc1991a3b26e3517ca5684a3a750b52e1a997eff0418 [2021-10-24 10:36:01,137 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:36:01,171 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:36:01,174 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:36:01,176 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:36:01,177 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:36:01,178 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55857643-6839-4961-a62a-5d2b77115d08/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/loop-lit/gsv2008.i [2021-10-24 10:36:01,292 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55857643-6839-4961-a62a-5d2b77115d08/bin/utaipan-9zjyvhn0QE/data/767646350/36b47526aad649388a9fb37c6be5a92b/FLAG3afb0aba0 [2021-10-24 10:36:01,879 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:36:01,880 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55857643-6839-4961-a62a-5d2b77115d08/sv-benchmarks/c/loop-lit/gsv2008.i [2021-10-24 10:36:01,888 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55857643-6839-4961-a62a-5d2b77115d08/bin/utaipan-9zjyvhn0QE/data/767646350/36b47526aad649388a9fb37c6be5a92b/FLAG3afb0aba0 [2021-10-24 10:36:02,248 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55857643-6839-4961-a62a-5d2b77115d08/bin/utaipan-9zjyvhn0QE/data/767646350/36b47526aad649388a9fb37c6be5a92b [2021-10-24 10:36:02,256 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:36:02,259 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:36:02,266 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:36:02,266 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:36:02,271 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:36:02,272 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:36:02" (1/1) ... [2021-10-24 10:36:02,275 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a210d7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:36:02, skipping insertion in model container [2021-10-24 10:36:02,275 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:36:02" (1/1) ... [2021-10-24 10:36:02,284 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:36:02,302 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:36:02,545 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_55857643-6839-4961-a62a-5d2b77115d08/sv-benchmarks/c/loop-lit/gsv2008.i[895,908] [2021-10-24 10:36:02,558 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:36:02,569 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:36:02,585 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_55857643-6839-4961-a62a-5d2b77115d08/sv-benchmarks/c/loop-lit/gsv2008.i[895,908] [2021-10-24 10:36:02,589 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:36:02,606 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:36:02,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:36:02 WrapperNode [2021-10-24 10:36:02,607 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:36:02,609 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:36:02,609 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:36:02,609 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:36:02,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:36:02" (1/1) ... [2021-10-24 10:36:02,627 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:36:02" (1/1) ... [2021-10-24 10:36:02,649 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:36:02,650 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:36:02,650 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:36:02,651 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:36:02,661 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:36:02" (1/1) ... [2021-10-24 10:36:02,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:36:02" (1/1) ... [2021-10-24 10:36:02,663 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:36:02" (1/1) ... [2021-10-24 10:36:02,664 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:36:02" (1/1) ... [2021-10-24 10:36:02,668 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:36:02" (1/1) ... [2021-10-24 10:36:02,672 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:36:02" (1/1) ... [2021-10-24 10:36:02,673 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:36:02" (1/1) ... [2021-10-24 10:36:02,675 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:36:02,676 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:36:02,677 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:36:02,677 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:36:02,678 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:36:02" (1/1) ... [2021-10-24 10:36:02,688 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:36:02,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55857643-6839-4961-a62a-5d2b77115d08/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:36:02,717 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55857643-6839-4961-a62a-5d2b77115d08/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:36:02,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55857643-6839-4961-a62a-5d2b77115d08/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:36:02,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 10:36:02,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:36:02,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:36:02,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:36:03,105 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:36:03,105 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-24 10:36:03,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:36:03 BoogieIcfgContainer [2021-10-24 10:36:03,108 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:36:03,111 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:36:03,111 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:36:03,130 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:36:03,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:36:02" (1/3) ... [2021-10-24 10:36:03,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c0f87f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:36:03, skipping insertion in model container [2021-10-24 10:36:03,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:36:02" (2/3) ... [2021-10-24 10:36:03,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c0f87f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:36:03, skipping insertion in model container [2021-10-24 10:36:03,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:36:03" (3/3) ... [2021-10-24 10:36:03,134 INFO L111 eAbstractionObserver]: Analyzing ICFG gsv2008.i [2021-10-24 10:36:03,140 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:36:03,141 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 10:36:03,226 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:36:03,235 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 [2021-10-24 10:36:03,235 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-24 10:36:03,253 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.5714285714285714) 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) [2021-10-24 10:36:03,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-24 10:36:03,260 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:36:03,261 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-24 10:36:03,261 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:36:03,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:36:03,270 INFO L82 PathProgramCache]: Analyzing trace with hash 61198179, now seen corresponding path program 1 times [2021-10-24 10:36:03,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:36:03,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716953361] [2021-10-24 10:36:03,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:36:03,285 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:36:03,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:36:03,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:36:03,535 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:36:03,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716953361] [2021-10-24 10:36:03,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716953361] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:36:03,537 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:36:03,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 10:36:03,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471955302] [2021-10-24 10:36:03,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:36:03,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:36:03,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:36:03,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:36:03,577 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.5714285714285714) 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) Second operand has 3 states, 3 states have (on average 1.6666666666666667) 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) [2021-10-24 10:36:03,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:36:03,637 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2021-10-24 10:36:03,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:36:03,640 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) 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 [2021-10-24 10:36:03,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:36:03,649 INFO L225 Difference]: With dead ends: 18 [2021-10-24 10:36:03,649 INFO L226 Difference]: Without dead ends: 7 [2021-10-24 10:36:03,652 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:36:03,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-10-24 10:36:03,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-10-24 10:36:03,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 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) [2021-10-24 10:36:03,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2021-10-24 10:36:03,689 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2021-10-24 10:36:03,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:36:03,690 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2021-10-24 10:36:03,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) 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) [2021-10-24 10:36:03,691 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2021-10-24 10:36:03,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-24 10:36:03,692 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:36:03,692 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-24 10:36:03,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 10:36:03,693 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:36:03,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:36:03,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1896502525, now seen corresponding path program 1 times [2021-10-24 10:36:03,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:36:03,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723018013] [2021-10-24 10:36:03,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:36:03,695 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:36:03,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:36:03,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:36:03,791 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:36:03,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723018013] [2021-10-24 10:36:03,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723018013] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-24 10:36:03,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076769259] [2021-10-24 10:36:03,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:36:03,796 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:36:03,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55857643-6839-4961-a62a-5d2b77115d08/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:36:03,804 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55857643-6839-4961-a62a-5d2b77115d08/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:36:03,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55857643-6839-4961-a62a-5d2b77115d08/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-24 10:36:03,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:36:03,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-24 10:36:03,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:36:04,046 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:36:04,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:36:04,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:36:04,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076769259] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 10:36:04,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1974510447] [2021-10-24 10:36:04,245 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-10-24 10:36:04,245 INFO L166 IcfgInterpreter]: Building call graph [2021-10-24 10:36:04,252 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-24 10:36:04,259 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-24 10:36:04,260 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-24 10:36:04,304 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:36:04,310 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:36:04,311 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:36:04,312 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-24 10:36:04,316 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:36:04,317 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:36:04,318 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-24 10:36:04,321 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-10-24 10:36:04,348 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_8|], 10=[|v_#valid_9|]} [2021-10-24 10:36:04,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:36:04,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-10-24 10:36:04,373 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:36:04,374 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-24 10:36:04,376 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:36:04,377 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-24 10:36:04,377 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 10:36:04,380 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:36:04,429 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:36:04,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:36:04,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:36:04,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:36:04,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:36:04,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-24 10:36:04,468 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:36:04,472 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 10:36:04,473 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:36:04,474 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 10:36:04,474 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 10:36:04,475 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:36:04,495 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:36:04,501 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:36:04,511 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-10-24 10:36:04,512 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-24 10:36:04,512 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:97, output treesize:82 [2021-10-24 10:36:04,537 INFO L180 QuantifierPusher]: treesize reduction 9, result has 91.3 percent of original size [2021-10-24 10:36:04,559 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-10-24 10:36:04,568 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:36:04,633 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:36:04,756 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:36:04,805 INFO L180 QuantifierPusher]: treesize reduction 9, result has 96.1 percent of original size [2021-10-24 10:36:04,818 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-10-24 10:36:04,837 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:36:04,924 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:36:04,927 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:36:04,933 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:36:04,935 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:36:04,938 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:36:04,971 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:36:04,987 INFO L180 QuantifierPusher]: treesize reduction 24, result has 63.1 percent of original size [2021-10-24 10:36:04,994 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-24 10:36:05,004 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-24 10:36:05,489 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:36:05,489 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-24 10:36:05,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-10-24 10:36:05,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829195178] [2021-10-24 10:36:05,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-24 10:36:05,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:36:05,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-24 10:36:05,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-10-24 10:36:05,493 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand has 8 states, 8 states have (on average 1.5) internal successors, (12), 7 states have internal predecessors, (12), 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) [2021-10-24 10:36:05,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:36:05,556 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2021-10-24 10:36:05,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-24 10:36:05,557 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 7 states have internal predecessors, (12), 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 [2021-10-24 10:36:05,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:36:05,558 INFO L225 Difference]: With dead ends: 9 [2021-10-24 10:36:05,558 INFO L226 Difference]: Without dead ends: 0 [2021-10-24 10:36:05,559 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 578.4ms TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-10-24 10:36:05,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-24 10:36:05,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-24 10:36:05,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-10-24 10:36:05,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-24 10:36:05,561 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2021-10-24 10:36:05,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:36:05,561 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-24 10:36:05,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 7 states have internal predecessors, (12), 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) [2021-10-24 10:36:05,562 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-24 10:36:05,562 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-24 10:36:05,565 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:36:05,671 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55857643-6839-4961-a62a-5d2b77115d08/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-24 10:36:05,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55857643-6839-4961-a62a-5d2b77115d08/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:36:05,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-24 10:36:05,786 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:36:05,787 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:36:05,788 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:36:05,806 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-24 10:36:05,807 INFO L853 garLoopResultBuilder]: At program point L29-2(lines 29 32) the Hoare annotation is: (or (< ULTIMATE.start_main_~x~0 0) (< 0 ULTIMATE.start_main_~y~0)) [2021-10-24 10:36:05,809 INFO L857 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2021-10-24 10:36:05,809 INFO L860 garLoopResultBuilder]: At program point L34(lines 24 35) the Hoare annotation is: true [2021-10-24 10:36:05,811 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-24 10:36:05,813 INFO L857 garLoopResultBuilder]: For program point L28(line 28) no Hoare annotation was computed. [2021-10-24 10:36:05,814 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-24 10:36:05,814 INFO L857 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-10-24 10:36:05,814 INFO L860 garLoopResultBuilder]: At program point L18-2(lines 17 22) the Hoare annotation is: true [2021-10-24 10:36:05,820 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:36:05,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:36:05 BoogieIcfgContainer [2021-10-24 10:36:05,836 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:36:05,837 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:36:05,837 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:36:05,837 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:36:05,838 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:36:03" (3/4) ... [2021-10-24 10:36:05,843 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-24 10:36:05,854 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-24 10:36:05,855 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-24 10:36:05,855 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 10:36:05,855 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 10:36:05,914 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55857643-6839-4961-a62a-5d2b77115d08/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 10:36:05,914 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:36:05,916 INFO L168 Benchmark]: Toolchain (without parser) took 3655.90 ms. Allocated memory was 115.3 MB in the beginning and 138.4 MB in the end (delta: 23.1 MB). Free memory was 85.0 MB in the beginning and 69.9 MB in the end (delta: 15.0 MB). Peak memory consumption was 37.2 MB. Max. memory is 16.1 GB. [2021-10-24 10:36:05,916 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 115.3 MB. Free memory is still 70.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:36:05,917 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.87 ms. Allocated memory was 115.3 MB in the beginning and 138.4 MB in the end (delta: 23.1 MB). Free memory was 84.9 MB in the beginning and 113.2 MB in the end (delta: -28.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 10:36:05,918 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.77 ms. Allocated memory is still 138.4 MB. Free memory was 113.2 MB in the beginning and 111.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:36:05,918 INFO L168 Benchmark]: Boogie Preprocessor took 25.58 ms. Allocated memory is still 138.4 MB. Free memory was 111.4 MB in the beginning and 110.5 MB in the end (delta: 906.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:36:05,919 INFO L168 Benchmark]: RCFGBuilder took 432.09 ms. Allocated memory is still 138.4 MB. Free memory was 110.5 MB in the beginning and 100.0 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 10:36:05,923 INFO L168 Benchmark]: TraceAbstraction took 2725.29 ms. Allocated memory is still 138.4 MB. Free memory was 100.0 MB in the beginning and 72.0 MB in the end (delta: 27.9 MB). Peak memory consumption was 27.7 MB. Max. memory is 16.1 GB. [2021-10-24 10:36:05,924 INFO L168 Benchmark]: Witness Printer took 77.59 ms. Allocated memory is still 138.4 MB. Free memory was 72.0 MB in the beginning and 69.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:36:05,928 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 115.3 MB. Free memory is still 70.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 341.87 ms. Allocated memory was 115.3 MB in the beginning and 138.4 MB in the end (delta: 23.1 MB). Free memory was 84.9 MB in the beginning and 113.2 MB in the end (delta: -28.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.77 ms. Allocated memory is still 138.4 MB. Free memory was 113.2 MB in the beginning and 111.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.58 ms. Allocated memory is still 138.4 MB. Free memory was 111.4 MB in the beginning and 110.5 MB in the end (delta: 906.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 432.09 ms. Allocated memory is still 138.4 MB. Free memory was 110.5 MB in the beginning and 100.0 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2725.29 ms. Allocated memory is still 138.4 MB. Free memory was 100.0 MB in the beginning and 72.0 MB in the end (delta: 27.9 MB). Peak memory consumption was 27.7 MB. Max. memory is 16.1 GB. * Witness Printer took 77.59 ms. Allocated memory is still 138.4 MB. Free memory was 72.0 MB in the beginning and 69.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2595.6ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 12.1ms, AutomataDifference: 171.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 26.1ms, InitialAbstractionConstructionTime: 12.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 11 SDtfs, 6 SDslu, 7 SDs, 0 SdLazy, 18 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 53.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 587.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 20.0ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 8 NumberOfFragments, 9 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 3.8ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 10 FormulaSimplificationTreeSizeReductionInter, 13.2ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 14.1ms SsaConstructionTime, 83.5ms SatisfiabilityAnalysisTime, 523.1ms InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 68 SizeOfPredicates, 4 NumberOfNonLiveVariables, 44 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: x < 0 || 0 < y RESULT: Ultimate proved your program to be correct! [2021-10-24 10:36:05,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55857643-6839-4961-a62a-5d2b77115d08/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...