./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_unwindbound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967bde39-1f7d-4491-b1eb-eb85552f59ea/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967bde39-1f7d-4491-b1eb-eb85552f59ea/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967bde39-1f7d-4491-b1eb-eb85552f59ea/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967bde39-1f7d-4491-b1eb-eb85552f59ea/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_unwindbound100.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967bde39-1f7d-4491-b1eb-eb85552f59ea/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967bde39-1f7d-4491-b1eb-eb85552f59ea/bin/utaipan-G1rejxKTta --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 9f50ec725f2d0539a1605de94af398ab61749c1d8954e8100cb71d8e6cff2c9e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 17:38:33,578 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:38:33,581 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:38:33,640 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:38:33,640 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:38:33,644 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:38:33,647 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:38:33,651 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:38:33,654 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:38:33,659 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:38:33,660 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:38:33,663 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:38:33,663 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:38:33,666 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:38:33,667 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:38:33,670 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:38:33,672 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:38:33,673 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:38:33,675 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:38:33,684 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:38:33,686 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:38:33,689 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:38:33,693 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:38:33,694 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:38:33,704 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:38:33,705 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:38:33,705 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:38:33,707 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:38:33,708 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:38:33,709 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:38:33,710 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:38:33,711 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:38:33,713 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:38:33,715 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:38:33,716 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:38:33,716 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:38:33,717 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:38:33,717 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:38:33,718 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:38:33,719 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:38:33,719 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:38:33,721 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967bde39-1f7d-4491-b1eb-eb85552f59ea/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-10-17 17:38:33,763 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:38:33,763 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:38:33,764 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:38:33,765 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:38:33,765 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:38:33,766 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:38:33,766 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:38:33,766 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:38:33,766 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:38:33,767 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:38:33,768 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:38:33,768 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:38:33,768 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:38:33,769 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:38:33,769 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:38:33,769 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:38:33,769 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:38:33,769 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:38:33,770 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:38:33,770 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:38:33,771 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:38:33,771 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:38:33,771 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:38:33,771 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:38:33,772 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:38:33,772 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:38:33,772 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:38:33,772 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:38:33,772 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:38:33,773 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:38:33,773 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:38:33,773 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:38:33,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:38:33,774 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:38:33,774 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:38:33,774 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:38:33,774 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:38:33,775 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:38:33,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:38:33,775 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:38:33,775 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:38:33,775 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_967bde39-1f7d-4491-b1eb-eb85552f59ea/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967bde39-1f7d-4491-b1eb-eb85552f59ea/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f50ec725f2d0539a1605de94af398ab61749c1d8954e8100cb71d8e6cff2c9e [2022-10-17 17:38:34,102 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:38:34,124 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:38:34,126 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:38:34,128 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:38:34,129 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:38:34,130 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967bde39-1f7d-4491-b1eb-eb85552f59ea/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_unwindbound100.c [2022-10-17 17:38:34,187 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967bde39-1f7d-4491-b1eb-eb85552f59ea/bin/utaipan-G1rejxKTta/data/442f1a118/a6c4b37bd3f94828971b285fe0cf41a7/FLAG0ce94391a [2022-10-17 17:38:34,737 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:38:34,737 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967bde39-1f7d-4491-b1eb-eb85552f59ea/sv-benchmarks/c/nla-digbench-scaling/geo2-ll_unwindbound100.c [2022-10-17 17:38:34,745 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967bde39-1f7d-4491-b1eb-eb85552f59ea/bin/utaipan-G1rejxKTta/data/442f1a118/a6c4b37bd3f94828971b285fe0cf41a7/FLAG0ce94391a [2022-10-17 17:38:35,161 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967bde39-1f7d-4491-b1eb-eb85552f59ea/bin/utaipan-G1rejxKTta/data/442f1a118/a6c4b37bd3f94828971b285fe0cf41a7 [2022-10-17 17:38:35,163 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:38:35,165 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:38:35,167 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:38:35,167 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:38:35,174 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:38:35,175 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:38:35" (1/1) ... [2022-10-17 17:38:35,177 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f53e26a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:35, skipping insertion in model container [2022-10-17 17:38:35,178 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:38:35" (1/1) ... [2022-10-17 17:38:35,185 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:38:35,203 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:38:35,368 WARN L230 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_967bde39-1f7d-4491-b1eb-eb85552f59ea/sv-benchmarks/c/nla-digbench-scaling/geo2-ll_unwindbound100.c[525,538] [2022-10-17 17:38:35,411 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:38:35,420 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:38:35,434 WARN L230 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_967bde39-1f7d-4491-b1eb-eb85552f59ea/sv-benchmarks/c/nla-digbench-scaling/geo2-ll_unwindbound100.c[525,538] [2022-10-17 17:38:35,439 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:38:35,453 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:38:35,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:35 WrapperNode [2022-10-17 17:38:35,454 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:38:35,455 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:38:35,455 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:38:35,455 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:38:35,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:35" (1/1) ... [2022-10-17 17:38:35,470 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:35" (1/1) ... [2022-10-17 17:38:35,486 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 42 [2022-10-17 17:38:35,487 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:38:35,487 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:38:35,488 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:38:35,488 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:38:35,495 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:35" (1/1) ... [2022-10-17 17:38:35,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:35" (1/1) ... [2022-10-17 17:38:35,497 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:35" (1/1) ... [2022-10-17 17:38:35,497 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:35" (1/1) ... [2022-10-17 17:38:35,500 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:35" (1/1) ... [2022-10-17 17:38:35,503 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:35" (1/1) ... [2022-10-17 17:38:35,504 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:35" (1/1) ... [2022-10-17 17:38:35,505 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:35" (1/1) ... [2022-10-17 17:38:35,507 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:38:35,508 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:38:35,508 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:38:35,508 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:38:35,509 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:35" (1/1) ... [2022-10-17 17:38:35,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:38:35,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967bde39-1f7d-4491-b1eb-eb85552f59ea/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:38:35,541 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967bde39-1f7d-4491-b1eb-eb85552f59ea/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:38:35,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967bde39-1f7d-4491-b1eb-eb85552f59ea/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:38:35,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:38:35,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:38:35,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:38:35,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:38:35,595 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-10-17 17:38:35,595 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-10-17 17:38:35,656 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:38:35,658 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:38:35,803 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:38:35,824 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:38:35,824 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 17:38:35,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:38:35 BoogieIcfgContainer [2022-10-17 17:38:35,827 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:38:35,830 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:38:35,830 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:38:35,834 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:38:35,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:38:35" (1/3) ... [2022-10-17 17:38:35,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d58510a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:38:35, skipping insertion in model container [2022-10-17 17:38:35,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:35" (2/3) ... [2022-10-17 17:38:35,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d58510a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:38:35, skipping insertion in model container [2022-10-17 17:38:35,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:38:35" (3/3) ... [2022-10-17 17:38:35,838 INFO L112 eAbstractionObserver]: Analyzing ICFG geo2-ll_unwindbound100.c [2022-10-17 17:38:35,868 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:38:35,869 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 17:38:35,957 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:38:35,967 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2b3599b6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:38:35,968 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 17:38:35,973 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 17:38:35,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-17 17:38:35,983 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:38:35,983 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-17 17:38:35,984 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:38:35,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:38:35,993 INFO L85 PathProgramCache]: Analyzing trace with hash 2138246143, now seen corresponding path program 1 times [2022-10-17 17:38:36,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:38:36,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747229329] [2022-10-17 17:38:36,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:38:36,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:38:36,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:38:36,163 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:38:36,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747229329] [2022-10-17 17:38:36,164 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-10-17 17:38:36,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580113477] [2022-10-17 17:38:36,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:38:36,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:38:36,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967bde39-1f7d-4491-b1eb-eb85552f59ea/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:38:36,175 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967bde39-1f7d-4491-b1eb-eb85552f59ea/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:38:36,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967bde39-1f7d-4491-b1eb-eb85552f59ea/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 17:38:36,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:38:36,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 1 conjunts are in the unsatisfiable core [2022-10-17 17:38:36,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:38:36,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:38:36,344 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:38:36,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580113477] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:38:36,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:38:36,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:38:36,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057445452] [2022-10-17 17:38:36,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:38:36,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 17:38:36,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:38:36,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 17:38:36,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 17:38:36,401 INFO L87 Difference]: Start difference. First operand has 14 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:38:36,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:38:36,427 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2022-10-17 17:38:36,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 17:38:36,430 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-10-17 17:38:36,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:38:36,437 INFO L225 Difference]: With dead ends: 27 [2022-10-17 17:38:36,437 INFO L226 Difference]: Without dead ends: 12 [2022-10-17 17:38:36,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 17:38:36,444 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:38:36,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:38:36,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-10-17 17:38:36,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-10-17 17:38:36,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 17:38:36,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2022-10-17 17:38:36,483 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 6 [2022-10-17 17:38:36,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:38:36,483 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2022-10-17 17:38:36,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:38:36,484 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2022-10-17 17:38:36,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-17 17:38:36,485 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:38:36,486 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:38:36,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967bde39-1f7d-4491-b1eb-eb85552f59ea/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 17:38:36,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967bde39-1f7d-4491-b1eb-eb85552f59ea/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-10-17 17:38:36,700 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:38:36,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:38:36,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1461620770, now seen corresponding path program 1 times [2022-10-17 17:38:36,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:38:36,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893079700] [2022-10-17 17:38:36,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:38:36,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:38:36,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:38:36,737 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:38:36,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893079700] [2022-10-17 17:38:36,737 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-10-17 17:38:36,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196265625] [2022-10-17 17:38:36,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:38:36,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:38:36,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967bde39-1f7d-4491-b1eb-eb85552f59ea/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:38:36,739 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967bde39-1f7d-4491-b1eb-eb85552f59ea/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:38:36,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967bde39-1f7d-4491-b1eb-eb85552f59ea/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 17:38:36,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:38:36,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 17:38:36,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:38:36,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:38:36,880 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:38:36,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196265625] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:38:36,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:38:36,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:38:36,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193778784] [2022-10-17 17:38:36,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:38:36,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 17:38:36,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:38:36,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 17:38:36,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 17:38:36,895 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:38:36,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:38:36,927 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2022-10-17 17:38:36,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 17:38:36,927 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-10-17 17:38:36,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:38:36,940 INFO L225 Difference]: With dead ends: 21 [2022-10-17 17:38:36,940 INFO L226 Difference]: Without dead ends: 14 [2022-10-17 17:38:36,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 17:38:36,943 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:38:36,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:38:36,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-10-17 17:38:36,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-10-17 17:38:36,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 17:38:36,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2022-10-17 17:38:36,955 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 7 [2022-10-17 17:38:36,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:38:36,957 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2022-10-17 17:38:36,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:38:36,957 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2022-10-17 17:38:36,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-17 17:38:36,970 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:38:36,970 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:38:37,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967bde39-1f7d-4491-b1eb-eb85552f59ea/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 17:38:37,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967bde39-1f7d-4491-b1eb-eb85552f59ea/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:38:37,188 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:38:37,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:38:37,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1463408230, now seen corresponding path program 1 times [2022-10-17 17:38:37,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:38:37,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521935287] [2022-10-17 17:38:37,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:38:37,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:38:37,211 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 17:38:37,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [275964901] [2022-10-17 17:38:37,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:38:37,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:38:37,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967bde39-1f7d-4491-b1eb-eb85552f59ea/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:38:37,219 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967bde39-1f7d-4491-b1eb-eb85552f59ea/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:38:37,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967bde39-1f7d-4491-b1eb-eb85552f59ea/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 17:38:37,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:38:37,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 17:38:37,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:38:37,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:38:37,370 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:38:37,372 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:38:37,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521935287] [2022-10-17 17:38:37,373 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 17:38:37,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275964901] [2022-10-17 17:38:37,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275964901] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:38:37,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:38:37,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 17:38:37,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199637282] [2022-10-17 17:38:37,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:38:37,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 17:38:37,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:38:37,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 17:38:37,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:38:37,378 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:38:37,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:38:37,443 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2022-10-17 17:38:37,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 17:38:37,443 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-10-17 17:38:37,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:38:37,444 INFO L225 Difference]: With dead ends: 23 [2022-10-17 17:38:37,444 INFO L226 Difference]: Without dead ends: 20 [2022-10-17 17:38:37,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-17 17:38:37,448 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 6 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:38:37,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 34 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:38:37,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-10-17 17:38:37,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-10-17 17:38:37,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 17:38:37,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2022-10-17 17:38:37,459 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 7 [2022-10-17 17:38:37,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:38:37,460 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2022-10-17 17:38:37,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:38:37,464 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2022-10-17 17:38:37,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-17 17:38:37,465 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:38:37,465 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:38:37,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967bde39-1f7d-4491-b1eb-eb85552f59ea/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-17 17:38:37,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967bde39-1f7d-4491-b1eb-eb85552f59ea/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-10-17 17:38:37,683 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:38:37,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:38:37,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1726160663, now seen corresponding path program 1 times [2022-10-17 17:38:37,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:38:37,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126339615] [2022-10-17 17:38:37,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:38:37,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:38:37,710 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 17:38:37,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1669689198] [2022-10-17 17:38:37,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:38:37,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:38:37,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967bde39-1f7d-4491-b1eb-eb85552f59ea/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:38:37,713 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967bde39-1f7d-4491-b1eb-eb85552f59ea/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:38:37,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967bde39-1f7d-4491-b1eb-eb85552f59ea/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-17 17:38:37,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:38:37,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-17 17:38:37,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:38:37,841 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:38:37,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:38:37,891 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:38:37,892 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:38:37,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126339615] [2022-10-17 17:38:37,892 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 17:38:37,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669689198] [2022-10-17 17:38:37,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669689198] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:38:37,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1102385442] [2022-10-17 17:38:37,915 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-10-17 17:38:37,916 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:38:37,921 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:38:37,931 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:38:37,931 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:38:39,336 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 11 for LOIs [2022-10-17 17:38:39,354 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:38:43,501 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '331#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (<= 1 ~counter~0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-10-17 17:38:43,502 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-10-17 17:38:43,502 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 17:38:43,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2022-10-17 17:38:43,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530258037] [2022-10-17 17:38:43,502 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 17:38:43,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 17:38:43,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:38:43,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 17:38:43,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2022-10-17 17:38:43,504 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 17:38:43,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:38:43,600 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2022-10-17 17:38:43,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 17:38:43,601 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 15 [2022-10-17 17:38:43,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:38:43,602 INFO L225 Difference]: With dead ends: 51 [2022-10-17 17:38:43,602 INFO L226 Difference]: Without dead ends: 44 [2022-10-17 17:38:43,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-10-17 17:38:43,604 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 22 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:38:43,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 60 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:38:43,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-10-17 17:38:43,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2022-10-17 17:38:43,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 28 states have (on average 1.25) internal successors, (35), 31 states have internal predecessors, (35), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 17:38:43,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2022-10-17 17:38:43,614 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 15 [2022-10-17 17:38:43,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:38:43,614 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2022-10-17 17:38:43,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 17:38:43,615 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2022-10-17 17:38:43,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-17 17:38:43,632 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:38:43,632 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:38:43,691 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967bde39-1f7d-4491-b1eb-eb85552f59ea/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-10-17 17:38:43,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967bde39-1f7d-4491-b1eb-eb85552f59ea/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:38:43,851 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:38:43,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:38:43,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1724373203, now seen corresponding path program 1 times [2022-10-17 17:38:43,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:38:43,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040424138] [2022-10-17 17:38:43,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:38:43,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:38:43,869 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 17:38:43,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [589283937] [2022-10-17 17:38:43,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:38:43,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:38:43,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967bde39-1f7d-4491-b1eb-eb85552f59ea/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:38:43,872 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967bde39-1f7d-4491-b1eb-eb85552f59ea/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:38:43,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967bde39-1f7d-4491-b1eb-eb85552f59ea/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-17 17:38:43,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:38:43,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-17 17:38:43,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:38:43,999 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:38:44,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:38:44,096 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:38:44,096 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:38:44,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040424138] [2022-10-17 17:38:44,097 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 17:38:44,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589283937] [2022-10-17 17:38:44,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589283937] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:38:44,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1277662397] [2022-10-17 17:38:44,102 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-10-17 17:38:44,102 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:38:44,103 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:38:44,103 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:38:44,103 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:38:44,926 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 29 for LOIs [2022-10-17 17:38:45,063 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:38:46,953 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '562#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (<= 1 ~counter~0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-10-17 17:38:46,954 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-10-17 17:38:46,954 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 17:38:46,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2022-10-17 17:38:46,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413517175] [2022-10-17 17:38:46,954 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 17:38:46,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 17:38:46,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:38:46,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 17:38:46,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-10-17 17:38:46,956 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 17:38:47,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:38:47,087 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2022-10-17 17:38:47,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 17:38:47,088 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-10-17 17:38:47,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:38:47,089 INFO L225 Difference]: With dead ends: 40 [2022-10-17 17:38:47,089 INFO L226 Difference]: Without dead ends: 0 [2022-10-17 17:38:47,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-10-17 17:38:47,091 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 8 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:38:47,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 32 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:38:47,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-10-17 17:38:47,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-10-17 17:38:47,093 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) [2022-10-17 17:38:47,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-10-17 17:38:47,094 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2022-10-17 17:38:47,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:38:47,094 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-10-17 17:38:47,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 17:38:47,095 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-10-17 17:38:47,095 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-10-17 17:38:47,098 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-10-17 17:38:47,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967bde39-1f7d-4491-b1eb-eb85552f59ea/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-17 17:38:47,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967bde39-1f7d-4491-b1eb-eb85552f59ea/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:38:47,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-10-17 17:38:47,379 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-10-17 17:38:47,379 INFO L902 garLoopResultBuilder]: At program point L44(line 44) the Hoare annotation is: true [2022-10-17 17:38:47,379 INFO L899 garLoopResultBuilder]: For program point L34-1(lines 34 43) no Hoare annotation was computed. [2022-10-17 17:38:47,380 INFO L895 garLoopResultBuilder]: At program point L34-3(lines 34 43) the Hoare annotation is: (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) |ULTIMATE.start_main_~x~0#1|) (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) 1)) [2022-10-17 17:38:47,380 INFO L895 garLoopResultBuilder]: At program point L34-4(lines 34 43) the Hoare annotation is: (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) |ULTIMATE.start_main_~x~0#1|) (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) 1)) [2022-10-17 17:38:47,380 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-10-17 17:38:47,380 INFO L895 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) |ULTIMATE.start_main_~x~0#1|) (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) 1)) [2022-10-17 17:38:47,380 INFO L899 garLoopResultBuilder]: For program point L35-1(lines 34 43) no Hoare annotation was computed. [2022-10-17 17:38:47,381 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2022-10-17 17:38:47,381 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2022-10-17 17:38:47,381 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 20) the Hoare annotation is: true [2022-10-17 17:38:47,381 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2022-10-17 17:38:47,381 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2022-10-17 17:38:47,382 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2022-10-17 17:38:47,386 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-10-17 17:38:47,388 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-17 17:38:47,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.10 05:38:47 BoogieIcfgContainer [2022-10-17 17:38:47,408 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-17 17:38:47,410 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 17:38:47,410 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 17:38:47,411 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 17:38:47,411 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:38:35" (3/4) ... [2022-10-17 17:38:47,415 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-10-17 17:38:47,422 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-10-17 17:38:47,427 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-10-17 17:38:47,428 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-10-17 17:38:47,429 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-10-17 17:38:47,435 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-10-17 17:38:47,479 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967bde39-1f7d-4491-b1eb-eb85552f59ea/bin/utaipan-G1rejxKTta/witness.graphml [2022-10-17 17:38:47,482 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 17:38:47,483 INFO L158 Benchmark]: Toolchain (without parser) took 12318.03ms. Allocated memory was 111.1MB in the beginning and 138.4MB in the end (delta: 27.3MB). Free memory was 72.2MB in the beginning and 45.0MB in the end (delta: 27.2MB). Peak memory consumption was 55.5MB. Max. memory is 16.1GB. [2022-10-17 17:38:47,484 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 111.1MB. Free memory is still 88.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:38:47,485 INFO L158 Benchmark]: CACSL2BoogieTranslator took 287.10ms. Allocated memory is still 111.1MB. Free memory was 71.9MB in the beginning and 86.8MB in the end (delta: -14.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-10-17 17:38:47,485 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.08ms. Allocated memory is still 111.1MB. Free memory was 86.8MB in the beginning and 85.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 17:38:47,486 INFO L158 Benchmark]: Boogie Preprocessor took 19.60ms. Allocated memory is still 111.1MB. Free memory was 85.4MB in the beginning and 84.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 17:38:47,486 INFO L158 Benchmark]: RCFGBuilder took 319.56ms. Allocated memory is still 111.1MB. Free memory was 84.3MB in the beginning and 73.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-10-17 17:38:47,490 INFO L158 Benchmark]: TraceAbstraction took 11578.79ms. Allocated memory was 111.1MB in the beginning and 138.4MB in the end (delta: 27.3MB). Free memory was 73.0MB in the beginning and 48.1MB in the end (delta: 24.9MB). Peak memory consumption was 53.4MB. Max. memory is 16.1GB. [2022-10-17 17:38:47,490 INFO L158 Benchmark]: Witness Printer took 72.35ms. Allocated memory is still 138.4MB. Free memory was 48.1MB in the beginning and 45.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-10-17 17:38:47,495 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 111.1MB. Free memory is still 88.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 287.10ms. Allocated memory is still 111.1MB. Free memory was 71.9MB in the beginning and 86.8MB in the end (delta: -14.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.08ms. Allocated memory is still 111.1MB. Free memory was 86.8MB in the beginning and 85.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.60ms. Allocated memory is still 111.1MB. Free memory was 85.4MB in the beginning and 84.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 319.56ms. Allocated memory is still 111.1MB. Free memory was 84.3MB in the beginning and 73.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 11578.79ms. Allocated memory was 111.1MB in the beginning and 138.4MB in the end (delta: 27.3MB). Free memory was 73.0MB in the beginning and 48.1MB in the end (delta: 24.9MB). Peak memory consumption was 53.4MB. Max. memory is 16.1GB. * Witness Printer took 72.35ms. Allocated memory is still 138.4MB. Free memory was 48.1MB in the beginning and 45.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * 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 - PositiveResult [Line: 17]: 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 2 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 11.5s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 39 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 36 mSDsluCounter, 172 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 117 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 101 IncrementalHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 59 mSDtfsCounter, 101 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 108 GetRequests, 67 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 6.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=4, InterpolantAutomatonStates: 28, 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, 5 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 16 PreInvPairs, 30 NumberOfFragments, 35 HoareAnnotationTreeSize, 16 FomulaSimplifications, 60 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 114 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 63 NumberOfCodeBlocks, 63 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 73 ConstructedInterpolants, 0 QuantifiedInterpolants, 241 SizeOfPredicates, 4 NumberOfNonLiveVariables, 293 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 8/18 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: 44]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: y * z + x == x * z + 1 RESULT: Ultimate proved your program to be correct! [2022-10-17 17:38:47,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967bde39-1f7d-4491-b1eb-eb85552f59ea/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE