./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label58.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1233b816-b8de-44e4-8a00-23adb5c02a1f/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1233b816-b8de-44e4-8a00-23adb5c02a1f/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1233b816-b8de-44e4-8a00-23adb5c02a1f/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1233b816-b8de-44e4-8a00-23adb5c02a1f/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label58.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1233b816-b8de-44e4-8a00-23adb5c02a1f/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1233b816-b8de-44e4-8a00-23adb5c02a1f/bin/utaipan-g80aRyZoba --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 a5f87b8357f03d9a8be5e507a55ad1b488f3fb22c6f294c5cc7e1ddb521502de --- 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-b5237d8 [2022-11-22 01:25:42,639 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:25:42,641 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:25:42,664 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:25:42,670 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:25:42,674 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:25:42,677 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:25:42,681 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:25:42,683 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:25:42,689 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:25:42,691 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:25:42,694 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:25:42,694 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:25:42,699 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:25:42,701 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:25:42,708 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:25:42,710 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:25:42,711 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:25:42,713 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:25:42,718 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:25:42,719 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:25:42,721 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:25:42,722 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:25:42,723 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:25:42,726 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:25:42,727 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:25:42,727 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:25:42,729 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:25:42,731 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:25:42,733 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:25:42,735 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:25:42,736 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:25:42,738 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:25:42,739 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:25:42,741 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:25:42,742 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:25:42,742 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:25:42,743 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:25:42,743 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:25:42,745 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:25:42,745 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:25:42,746 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1233b816-b8de-44e4-8a00-23adb5c02a1f/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-22 01:25:42,787 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:25:42,787 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:25:42,788 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:25:42,788 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:25:42,789 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:25:42,789 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:25:42,790 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:25:42,790 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:25:42,790 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:25:42,790 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:25:42,791 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:25:42,792 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:25:42,792 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:25:42,792 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:25:42,793 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:25:42,793 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:25:42,793 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:25:42,793 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:25:42,794 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:25:42,794 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 01:25:42,795 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:25:42,795 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 01:25:42,795 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:25:42,795 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:25:42,796 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:25:42,796 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:25:42,796 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 01:25:42,796 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:25:42,796 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:25:42,797 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:25:42,797 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:25:42,797 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:25:42,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:25:42,798 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:25:42,798 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:25:42,798 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:25:42,799 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:25:42,799 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:25:42,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:25:42,799 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:25:42,800 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:25:42,800 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_1233b816-b8de-44e4-8a00-23adb5c02a1f/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1233b816-b8de-44e4-8a00-23adb5c02a1f/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5f87b8357f03d9a8be5e507a55ad1b488f3fb22c6f294c5cc7e1ddb521502de [2022-11-22 01:25:43,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:25:43,127 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:25:43,130 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:25:43,131 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:25:43,132 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:25:43,133 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1233b816-b8de-44e4-8a00-23adb5c02a1f/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/eca-rers2012/Problem01_label58.c [2022-11-22 01:25:46,096 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:25:46,499 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:25:46,500 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1233b816-b8de-44e4-8a00-23adb5c02a1f/sv-benchmarks/c/eca-rers2012/Problem01_label58.c [2022-11-22 01:25:46,522 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1233b816-b8de-44e4-8a00-23adb5c02a1f/bin/utaipan-g80aRyZoba/data/afd4a75ee/7f782cbd68f1428a9d0d96cad29e76f8/FLAG40838d256 [2022-11-22 01:25:46,540 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1233b816-b8de-44e4-8a00-23adb5c02a1f/bin/utaipan-g80aRyZoba/data/afd4a75ee/7f782cbd68f1428a9d0d96cad29e76f8 [2022-11-22 01:25:46,544 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:25:46,546 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:25:46,550 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:25:46,550 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:25:46,554 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:25:46,554 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:25:46" (1/1) ... [2022-11-22 01:25:46,555 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f51aadf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:25:46, skipping insertion in model container [2022-11-22 01:25:46,556 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:25:46" (1/1) ... [2022-11-22 01:25:46,563 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:25:46,618 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:25:47,031 WARN L237 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_1233b816-b8de-44e4-8a00-23adb5c02a1f/sv-benchmarks/c/eca-rers2012/Problem01_label58.c[17861,17874] [2022-11-22 01:25:47,092 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:25:47,102 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:25:47,212 WARN L237 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_1233b816-b8de-44e4-8a00-23adb5c02a1f/sv-benchmarks/c/eca-rers2012/Problem01_label58.c[17861,17874] [2022-11-22 01:25:47,227 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:25:47,241 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:25:47,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:25:47 WrapperNode [2022-11-22 01:25:47,242 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:25:47,243 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:25:47,243 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:25:47,244 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:25:47,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:25:47" (1/1) ... [2022-11-22 01:25:47,267 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:25:47" (1/1) ... [2022-11-22 01:25:47,308 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 657 [2022-11-22 01:25:47,308 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:25:47,309 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:25:47,309 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:25:47,309 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:25:47,319 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:25:47" (1/1) ... [2022-11-22 01:25:47,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:25:47" (1/1) ... [2022-11-22 01:25:47,323 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:25:47" (1/1) ... [2022-11-22 01:25:47,323 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:25:47" (1/1) ... [2022-11-22 01:25:47,339 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:25:47" (1/1) ... [2022-11-22 01:25:47,345 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:25:47" (1/1) ... [2022-11-22 01:25:47,349 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:25:47" (1/1) ... [2022-11-22 01:25:47,358 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:25:47" (1/1) ... [2022-11-22 01:25:47,364 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:25:47,365 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:25:47,365 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:25:47,365 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:25:47,366 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:25:47" (1/1) ... [2022-11-22 01:25:47,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:25:47,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1233b816-b8de-44e4-8a00-23adb5c02a1f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:25:47,411 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1233b816-b8de-44e4-8a00-23adb5c02a1f/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:25:47,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1233b816-b8de-44e4-8a00-23adb5c02a1f/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:25:47,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:25:47,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 01:25:47,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:25:47,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:25:47,564 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:25:47,567 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:25:48,802 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:25:49,005 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:25:49,005 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-22 01:25:49,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:25:49 BoogieIcfgContainer [2022-11-22 01:25:49,008 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:25:49,019 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:25:49,019 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:25:49,023 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:25:49,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:25:46" (1/3) ... [2022-11-22 01:25:49,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41b8d5e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:25:49, skipping insertion in model container [2022-11-22 01:25:49,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:25:47" (2/3) ... [2022-11-22 01:25:49,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41b8d5e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:25:49, skipping insertion in model container [2022-11-22 01:25:49,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:25:49" (3/3) ... [2022-11-22 01:25:49,029 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label58.c [2022-11-22 01:25:49,049 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:25:49,050 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 01:25:49,116 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:25:49,123 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;@b807fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:25:49,124 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 01:25:49,128 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 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) [2022-11-22 01:25:49,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-22 01:25:49,137 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:25:49,138 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:25:49,138 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:25:49,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:25:49,144 INFO L85 PathProgramCache]: Analyzing trace with hash 379015937, now seen corresponding path program 1 times [2022-11-22 01:25:49,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:25:49,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514273579] [2022-11-22 01:25:49,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:25:49,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:25:49,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:25:49,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:25:49,649 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:25:49,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514273579] [2022-11-22 01:25:49,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514273579] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:25:49,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:25:49,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:25:49,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029673295] [2022-11-22 01:25:49,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:25:49,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:25:49,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:25:49,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:25:49,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:25:49,687 INFO L87 Difference]: Start difference. First operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 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 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 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) [2022-11-22 01:25:50,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:25:50,156 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2022-11-22 01:25:50,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:25:50,159 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 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 71 [2022-11-22 01:25:50,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:25:50,168 INFO L225 Difference]: With dead ends: 224 [2022-11-22 01:25:50,169 INFO L226 Difference]: Without dead ends: 145 [2022-11-22 01:25:50,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:25:50,175 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 18 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 01:25:50,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 36 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 01:25:50,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-11-22 01:25:50,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2022-11-22 01:25:50,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.7569444444444444) internal successors, (253), 144 states have internal predecessors, (253), 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) [2022-11-22 01:25:50,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 253 transitions. [2022-11-22 01:25:50,241 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 253 transitions. Word has length 71 [2022-11-22 01:25:50,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:25:50,242 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 253 transitions. [2022-11-22 01:25:50,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 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) [2022-11-22 01:25:50,242 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 253 transitions. [2022-11-22 01:25:50,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-22 01:25:50,245 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:25:50,245 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:25:50,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:25:50,245 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:25:50,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:25:50,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1189492423, now seen corresponding path program 1 times [2022-11-22 01:25:50,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:25:50,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160818973] [2022-11-22 01:25:50,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:25:50,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:25:50,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:25:50,465 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:25:50,466 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:25:50,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160818973] [2022-11-22 01:25:50,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160818973] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:25:50,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:25:50,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:25:50,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896932840] [2022-11-22 01:25:50,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:25:50,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:25:50,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:25:50,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:25:50,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:25:50,471 INFO L87 Difference]: Start difference. First operand 145 states and 253 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2022-11-22 01:25:50,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:25:50,895 INFO L93 Difference]: Finished difference Result 431 states and 756 transitions. [2022-11-22 01:25:50,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:25:50,896 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 75 [2022-11-22 01:25:50,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:25:50,898 INFO L225 Difference]: With dead ends: 431 [2022-11-22 01:25:50,898 INFO L226 Difference]: Without dead ends: 287 [2022-11-22 01:25:50,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:25:50,900 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 18 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 01:25:50,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 15 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 01:25:50,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-11-22 01:25:50,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 216. [2022-11-22 01:25:50,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 1.786046511627907) internal successors, (384), 215 states have internal predecessors, (384), 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) [2022-11-22 01:25:50,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 384 transitions. [2022-11-22 01:25:50,933 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 384 transitions. Word has length 75 [2022-11-22 01:25:50,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:25:50,936 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 384 transitions. [2022-11-22 01:25:50,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2022-11-22 01:25:50,937 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 384 transitions. [2022-11-22 01:25:50,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-22 01:25:50,940 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:25:50,941 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:25:50,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 01:25:50,942 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:25:50,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:25:50,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1708122937, now seen corresponding path program 1 times [2022-11-22 01:25:50,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:25:50,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254710595] [2022-11-22 01:25:50,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:25:50,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:25:50,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:25:51,090 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:25:51,091 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:25:51,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254710595] [2022-11-22 01:25:51,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254710595] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:25:51,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:25:51,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:25:51,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984026709] [2022-11-22 01:25:51,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:25:51,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:25:51,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:25:51,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:25:51,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:25:51,096 INFO L87 Difference]: Start difference. First operand 216 states and 384 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 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) [2022-11-22 01:25:51,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:25:51,450 INFO L93 Difference]: Finished difference Result 573 states and 1011 transitions. [2022-11-22 01:25:51,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:25:51,450 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 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 76 [2022-11-22 01:25:51,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:25:51,452 INFO L225 Difference]: With dead ends: 573 [2022-11-22 01:25:51,452 INFO L226 Difference]: Without dead ends: 358 [2022-11-22 01:25:51,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:25:51,455 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 112 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:25:51,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 25 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 01:25:51,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2022-11-22 01:25:51,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2022-11-22 01:25:51,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 1.607843137254902) internal successors, (574), 357 states have internal predecessors, (574), 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) [2022-11-22 01:25:51,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 574 transitions. [2022-11-22 01:25:51,473 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 574 transitions. Word has length 76 [2022-11-22 01:25:51,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:25:51,473 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 574 transitions. [2022-11-22 01:25:51,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 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) [2022-11-22 01:25:51,474 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 574 transitions. [2022-11-22 01:25:51,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-22 01:25:51,476 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:25:51,476 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:25:51,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 01:25:51,476 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:25:51,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:25:51,477 INFO L85 PathProgramCache]: Analyzing trace with hash 763843952, now seen corresponding path program 1 times [2022-11-22 01:25:51,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:25:51,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229173762] [2022-11-22 01:25:51,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:25:51,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:25:51,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:25:51,695 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-22 01:25:51,695 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:25:51,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229173762] [2022-11-22 01:25:51,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229173762] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:25:51,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:25:51,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:25:51,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267773113] [2022-11-22 01:25:51,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:25:51,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:25:51,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:25:51,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:25:51,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:25:51,698 INFO L87 Difference]: Start difference. First operand 358 states and 574 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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) [2022-11-22 01:25:51,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:25:51,979 INFO L93 Difference]: Finished difference Result 715 states and 1147 transitions. [2022-11-22 01:25:51,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:25:51,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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 87 [2022-11-22 01:25:51,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:25:51,982 INFO L225 Difference]: With dead ends: 715 [2022-11-22 01:25:51,982 INFO L226 Difference]: Without dead ends: 358 [2022-11-22 01:25:51,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:25:51,984 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 72 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:25:51,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 58 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 01:25:51,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2022-11-22 01:25:51,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2022-11-22 01:25:52,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 1.5910364145658262) internal successors, (568), 357 states have internal predecessors, (568), 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) [2022-11-22 01:25:52,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 568 transitions. [2022-11-22 01:25:52,007 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 568 transitions. Word has length 87 [2022-11-22 01:25:52,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:25:52,008 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 568 transitions. [2022-11-22 01:25:52,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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) [2022-11-22 01:25:52,009 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 568 transitions. [2022-11-22 01:25:52,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-22 01:25:52,014 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:25:52,015 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:25:52,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 01:25:52,015 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:25:52,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:25:52,016 INFO L85 PathProgramCache]: Analyzing trace with hash 2105957288, now seen corresponding path program 1 times [2022-11-22 01:25:52,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:25:52,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219181648] [2022-11-22 01:25:52,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:25:52,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:25:52,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:25:52,216 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-22 01:25:52,218 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:25:52,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219181648] [2022-11-22 01:25:52,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219181648] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:25:52,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:25:52,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:25:52,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148539438] [2022-11-22 01:25:52,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:25:52,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:25:52,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:25:52,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:25:52,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:25:52,224 INFO L87 Difference]: Start difference. First operand 358 states and 568 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 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) [2022-11-22 01:25:52,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:25:52,566 INFO L93 Difference]: Finished difference Result 928 states and 1457 transitions. [2022-11-22 01:25:52,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:25:52,567 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 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 91 [2022-11-22 01:25:52,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:25:52,569 INFO L225 Difference]: With dead ends: 928 [2022-11-22 01:25:52,569 INFO L226 Difference]: Without dead ends: 571 [2022-11-22 01:25:52,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:25:52,571 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 69 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:25:52,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 57 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 01:25:52,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2022-11-22 01:25:52,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2022-11-22 01:25:52,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 570 states have (on average 1.4649122807017543) internal successors, (835), 570 states have internal predecessors, (835), 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) [2022-11-22 01:25:52,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 835 transitions. [2022-11-22 01:25:52,589 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 835 transitions. Word has length 91 [2022-11-22 01:25:52,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:25:52,590 INFO L495 AbstractCegarLoop]: Abstraction has 571 states and 835 transitions. [2022-11-22 01:25:52,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 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) [2022-11-22 01:25:52,590 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 835 transitions. [2022-11-22 01:25:52,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-22 01:25:52,592 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:25:52,593 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:25:52,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 01:25:52,593 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:25:52,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:25:52,594 INFO L85 PathProgramCache]: Analyzing trace with hash -140017044, now seen corresponding path program 1 times [2022-11-22 01:25:52,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:25:52,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518177471] [2022-11-22 01:25:52,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:25:52,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:25:52,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:25:52,836 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-22 01:25:52,836 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:25:52,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518177471] [2022-11-22 01:25:52,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518177471] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:25:52,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:25:52,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:25:52,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745864150] [2022-11-22 01:25:52,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:25:52,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:25:52,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:25:52,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:25:52,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:25:52,839 INFO L87 Difference]: Start difference. First operand 571 states and 835 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 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) [2022-11-22 01:25:53,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:25:53,156 INFO L93 Difference]: Finished difference Result 1212 states and 1782 transitions. [2022-11-22 01:25:53,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:25:53,157 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 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 116 [2022-11-22 01:25:53,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:25:53,160 INFO L225 Difference]: With dead ends: 1212 [2022-11-22 01:25:53,160 INFO L226 Difference]: Without dead ends: 642 [2022-11-22 01:25:53,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:25:53,161 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 48 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:25:53,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 58 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 01:25:53,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2022-11-22 01:25:53,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2022-11-22 01:25:53,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 1.4414976599063962) internal successors, (924), 641 states have internal predecessors, (924), 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) [2022-11-22 01:25:53,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 924 transitions. [2022-11-22 01:25:53,177 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 924 transitions. Word has length 116 [2022-11-22 01:25:53,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:25:53,177 INFO L495 AbstractCegarLoop]: Abstraction has 642 states and 924 transitions. [2022-11-22 01:25:53,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 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) [2022-11-22 01:25:53,177 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 924 transitions. [2022-11-22 01:25:53,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-22 01:25:53,179 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:25:53,179 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:25:53,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 01:25:53,180 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:25:53,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:25:53,180 INFO L85 PathProgramCache]: Analyzing trace with hash 768853812, now seen corresponding path program 1 times [2022-11-22 01:25:53,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:25:53,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378541885] [2022-11-22 01:25:53,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:25:53,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:25:53,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:25:53,465 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-22 01:25:53,465 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:25:53,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378541885] [2022-11-22 01:25:53,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378541885] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:25:53,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:25:53,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:25:53,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034627760] [2022-11-22 01:25:53,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:25:53,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:25:53,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:25:53,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:25:53,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:25:53,468 INFO L87 Difference]: Start difference. First operand 642 states and 924 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 3 states have internal predecessors, (106), 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) [2022-11-22 01:25:53,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:25:53,966 INFO L93 Difference]: Finished difference Result 1496 states and 2108 transitions. [2022-11-22 01:25:53,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 01:25:53,966 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 3 states have internal predecessors, (106), 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 120 [2022-11-22 01:25:53,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:25:53,970 INFO L225 Difference]: With dead ends: 1496 [2022-11-22 01:25:53,970 INFO L226 Difference]: Without dead ends: 855 [2022-11-22 01:25:53,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:25:53,971 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 152 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 01:25:53,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 55 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 01:25:53,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2022-11-22 01:25:53,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 784. [2022-11-22 01:25:53,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 783 states have (on average 1.3690932311621966) internal successors, (1072), 783 states have internal predecessors, (1072), 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) [2022-11-22 01:25:53,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1072 transitions. [2022-11-22 01:25:53,993 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1072 transitions. Word has length 120 [2022-11-22 01:25:53,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:25:53,993 INFO L495 AbstractCegarLoop]: Abstraction has 784 states and 1072 transitions. [2022-11-22 01:25:53,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 3 states have internal predecessors, (106), 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) [2022-11-22 01:25:53,993 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1072 transitions. [2022-11-22 01:25:53,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-22 01:25:53,998 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:25:53,999 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:25:53,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 01:25:53,999 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:25:53,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:25:53,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1488484695, now seen corresponding path program 1 times [2022-11-22 01:25:54,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:25:54,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977636167] [2022-11-22 01:25:54,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:25:54,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:25:54,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:25:54,290 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-22 01:25:54,290 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:25:54,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977636167] [2022-11-22 01:25:54,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977636167] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:25:54,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:25:54,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 01:25:54,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356477749] [2022-11-22 01:25:54,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:25:54,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:25:54,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:25:54,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:25:54,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:25:54,292 INFO L87 Difference]: Start difference. First operand 784 states and 1072 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 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) [2022-11-22 01:25:54,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:25:54,821 INFO L93 Difference]: Finished difference Result 1780 states and 2422 transitions. [2022-11-22 01:25:54,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 01:25:54,821 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 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 137 [2022-11-22 01:25:54,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:25:54,825 INFO L225 Difference]: With dead ends: 1780 [2022-11-22 01:25:54,825 INFO L226 Difference]: Without dead ends: 997 [2022-11-22 01:25:54,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:25:54,827 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 104 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 01:25:54,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 38 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 01:25:54,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2022-11-22 01:25:54,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 784. [2022-11-22 01:25:54,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 783 states have (on average 1.3001277139208174) internal successors, (1018), 783 states have internal predecessors, (1018), 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) [2022-11-22 01:25:54,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1018 transitions. [2022-11-22 01:25:54,846 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1018 transitions. Word has length 137 [2022-11-22 01:25:54,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:25:54,846 INFO L495 AbstractCegarLoop]: Abstraction has 784 states and 1018 transitions. [2022-11-22 01:25:54,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 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) [2022-11-22 01:25:54,846 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1018 transitions. [2022-11-22 01:25:54,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-11-22 01:25:54,849 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:25:54,849 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:25:54,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 01:25:54,849 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:25:54,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:25:54,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1747514136, now seen corresponding path program 1 times [2022-11-22 01:25:54,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:25:54,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759573785] [2022-11-22 01:25:54,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:25:54,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:25:54,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:25:55,101 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-22 01:25:55,101 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:25:55,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759573785] [2022-11-22 01:25:55,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759573785] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:25:55,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:25:55,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:25:55,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597661286] [2022-11-22 01:25:55,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:25:55,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:25:55,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:25:55,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:25:55,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:25:55,104 INFO L87 Difference]: Start difference. First operand 784 states and 1018 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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) [2022-11-22 01:25:55,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:25:55,442 INFO L93 Difference]: Finished difference Result 1780 states and 2314 transitions. [2022-11-22 01:25:55,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:25:55,442 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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 164 [2022-11-22 01:25:55,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:25:55,447 INFO L225 Difference]: With dead ends: 1780 [2022-11-22 01:25:55,447 INFO L226 Difference]: Without dead ends: 997 [2022-11-22 01:25:55,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:25:55,449 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 28 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:25:55,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 124 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 01:25:55,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2022-11-22 01:25:55,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 926. [2022-11-22 01:25:55,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 925 states have (on average 1.267027027027027) internal successors, (1172), 925 states have internal predecessors, (1172), 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) [2022-11-22 01:25:55,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1172 transitions. [2022-11-22 01:25:55,472 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1172 transitions. Word has length 164 [2022-11-22 01:25:55,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:25:55,472 INFO L495 AbstractCegarLoop]: Abstraction has 926 states and 1172 transitions. [2022-11-22 01:25:55,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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) [2022-11-22 01:25:55,473 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1172 transitions. [2022-11-22 01:25:55,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-11-22 01:25:55,476 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:25:55,476 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:25:55,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 01:25:55,476 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:25:55,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:25:55,477 INFO L85 PathProgramCache]: Analyzing trace with hash 243925745, now seen corresponding path program 1 times [2022-11-22 01:25:55,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:25:55,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987230084] [2022-11-22 01:25:55,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:25:55,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:25:55,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:25:55,740 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2022-11-22 01:25:55,741 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:25:55,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987230084] [2022-11-22 01:25:55,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987230084] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:25:55,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:25:55,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:25:55,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553054010] [2022-11-22 01:25:55,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:25:55,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:25:55,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:25:55,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:25:55,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:25:55,743 INFO L87 Difference]: Start difference. First operand 926 states and 1172 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 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) [2022-11-22 01:25:56,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:25:56,043 INFO L93 Difference]: Finished difference Result 1139 states and 1433 transitions. [2022-11-22 01:25:56,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:25:56,044 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 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 186 [2022-11-22 01:25:56,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:25:56,044 INFO L225 Difference]: With dead ends: 1139 [2022-11-22 01:25:56,044 INFO L226 Difference]: Without dead ends: 0 [2022-11-22 01:25:56,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:25:56,046 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 20 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:25:56,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 24 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 01:25:56,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-22 01:25:56,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-22 01:25:56,047 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) [2022-11-22 01:25:56,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-22 01:25:56,047 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 186 [2022-11-22 01:25:56,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:25:56,047 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-22 01:25:56,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 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) [2022-11-22 01:25:56,048 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-22 01:25:56,048 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-22 01:25:56,050 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-22 01:25:56,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 01:25:56,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-22 01:25:56,300 INFO L899 garLoopResultBuilder]: For program point L102(lines 102 400) no Hoare annotation was computed. [2022-11-22 01:25:56,300 INFO L899 garLoopResultBuilder]: For program point L598(line 598) no Hoare annotation was computed. [2022-11-22 01:25:56,300 INFO L899 garLoopResultBuilder]: For program point L334(lines 334 400) no Hoare annotation was computed. [2022-11-22 01:25:56,300 INFO L899 garLoopResultBuilder]: For program point L302(lines 302 400) no Hoare annotation was computed. [2022-11-22 01:25:56,300 INFO L899 garLoopResultBuilder]: For program point L170(lines 170 400) no Hoare annotation was computed. [2022-11-22 01:25:56,300 INFO L899 garLoopResultBuilder]: For program point L204(lines 204 400) no Hoare annotation was computed. [2022-11-22 01:25:56,301 INFO L899 garLoopResultBuilder]: For program point L72(lines 72 400) no Hoare annotation was computed. [2022-11-22 01:25:56,301 INFO L899 garLoopResultBuilder]: For program point L271(lines 271 400) no Hoare annotation was computed. [2022-11-22 01:25:56,301 INFO L899 garLoopResultBuilder]: For program point L139(lines 139 400) no Hoare annotation was computed. [2022-11-22 01:25:56,301 INFO L899 garLoopResultBuilder]: For program point L371(lines 371 400) no Hoare annotation was computed. [2022-11-22 01:25:56,301 INFO L899 garLoopResultBuilder]: For program point L107(lines 107 400) no Hoare annotation was computed. [2022-11-22 01:25:56,301 INFO L899 garLoopResultBuilder]: For program point L41(lines 41 400) no Hoare annotation was computed. [2022-11-22 01:25:56,301 INFO L899 garLoopResultBuilder]: For program point L339(lines 339 400) no Hoare annotation was computed. [2022-11-22 01:25:56,301 INFO L899 garLoopResultBuilder]: For program point L207(lines 207 400) no Hoare annotation was computed. [2022-11-22 01:25:56,301 INFO L899 garLoopResultBuilder]: For program point L75(lines 75 400) no Hoare annotation was computed. [2022-11-22 01:25:56,301 INFO L899 garLoopResultBuilder]: For program point L373(lines 373 400) no Hoare annotation was computed. [2022-11-22 01:25:56,301 INFO L899 garLoopResultBuilder]: For program point L241(lines 241 400) no Hoare annotation was computed. [2022-11-22 01:25:56,302 INFO L899 garLoopResultBuilder]: For program point L175(lines 175 400) no Hoare annotation was computed. [2022-11-22 01:25:56,302 INFO L899 garLoopResultBuilder]: For program point L275(lines 275 400) no Hoare annotation was computed. [2022-11-22 01:25:56,302 INFO L899 garLoopResultBuilder]: For program point L375(lines 375 400) no Hoare annotation was computed. [2022-11-22 01:25:56,302 INFO L899 garLoopResultBuilder]: For program point L309(lines 309 400) no Hoare annotation was computed. [2022-11-22 01:25:56,302 INFO L899 garLoopResultBuilder]: For program point L45(lines 45 400) no Hoare annotation was computed. [2022-11-22 01:25:56,302 INFO L899 garLoopResultBuilder]: For program point L343(lines 343 400) no Hoare annotation was computed. [2022-11-22 01:25:56,302 INFO L899 garLoopResultBuilder]: For program point L112(lines 112 400) no Hoare annotation was computed. [2022-11-22 01:25:56,302 INFO L899 garLoopResultBuilder]: For program point L278(lines 278 400) no Hoare annotation was computed. [2022-11-22 01:25:56,302 INFO L899 garLoopResultBuilder]: For program point L146(lines 146 400) no Hoare annotation was computed. [2022-11-22 01:25:56,303 INFO L899 garLoopResultBuilder]: For program point L213(lines 213 400) no Hoare annotation was computed. [2022-11-22 01:25:56,303 INFO L899 garLoopResultBuilder]: For program point L82(lines 82 400) no Hoare annotation was computed. [2022-11-22 01:25:56,303 INFO L899 garLoopResultBuilder]: For program point L479-1(lines 40 585) no Hoare annotation was computed. [2022-11-22 01:25:56,303 INFO L899 garLoopResultBuilder]: For program point L347(lines 347 400) no Hoare annotation was computed. [2022-11-22 01:25:56,303 INFO L899 garLoopResultBuilder]: For program point L248(lines 248 400) no Hoare annotation was computed. [2022-11-22 01:25:56,303 INFO L899 garLoopResultBuilder]: For program point L183(lines 183 400) no Hoare annotation was computed. [2022-11-22 01:25:56,303 INFO L899 garLoopResultBuilder]: For program point L150(lines 150 400) no Hoare annotation was computed. [2022-11-22 01:25:56,303 INFO L899 garLoopResultBuilder]: For program point L382(lines 382 400) no Hoare annotation was computed. [2022-11-22 01:25:56,303 INFO L899 garLoopResultBuilder]: For program point L316(lines 316 400) no Hoare annotation was computed. [2022-11-22 01:25:56,303 INFO L899 garLoopResultBuilder]: For program point L283(lines 283 400) no Hoare annotation was computed. [2022-11-22 01:25:56,304 INFO L899 garLoopResultBuilder]: For program point L118(lines 118 400) no Hoare annotation was computed. [2022-11-22 01:25:56,304 INFO L899 garLoopResultBuilder]: For program point L482-1(lines 40 585) no Hoare annotation was computed. [2022-11-22 01:25:56,304 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-22 01:25:56,304 INFO L899 garLoopResultBuilder]: For program point L218(lines 218 400) no Hoare annotation was computed. [2022-11-22 01:25:56,304 INFO L899 garLoopResultBuilder]: For program point L53(lines 53 400) no Hoare annotation was computed. [2022-11-22 01:25:56,304 INFO L899 garLoopResultBuilder]: For program point L483(line 483) no Hoare annotation was computed. [2022-11-22 01:25:56,304 INFO L899 garLoopResultBuilder]: For program point L154(lines 154 400) no Hoare annotation was computed. [2022-11-22 01:25:56,305 INFO L895 garLoopResultBuilder]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse0 (= ~a21~0 1)) (.cse1 (<= ~a16~0 5))) (or (and .cse0 .cse1) (and (= ~a16~0 6) .cse0 (<= 15 ~a8~0)) (= ~a20~0 1) (and (= ~a17~0 1) .cse1))) [2022-11-22 01:25:56,305 INFO L899 garLoopResultBuilder]: For program point L188(lines 188 400) no Hoare annotation was computed. [2022-11-22 01:25:56,305 INFO L899 garLoopResultBuilder]: For program point L387(lines 387 400) no Hoare annotation was computed. [2022-11-22 01:25:56,305 INFO L899 garLoopResultBuilder]: For program point L288(lines 288 400) no Hoare annotation was computed. [2022-11-22 01:25:56,305 INFO L899 garLoopResultBuilder]: For program point L255(lines 255 400) no Hoare annotation was computed. [2022-11-22 01:25:56,305 INFO L899 garLoopResultBuilder]: For program point L90(lines 90 400) no Hoare annotation was computed. [2022-11-22 01:25:56,305 INFO L899 garLoopResultBuilder]: For program point L355(lines 355 400) no Hoare annotation was computed. [2022-11-22 01:25:56,305 INFO L899 garLoopResultBuilder]: For program point L322(lines 322 400) no Hoare annotation was computed. [2022-11-22 01:25:56,305 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-22 01:25:56,306 INFO L899 garLoopResultBuilder]: For program point L124(lines 124 400) no Hoare annotation was computed. [2022-11-22 01:25:56,306 INFO L902 garLoopResultBuilder]: At program point L587(lines 587 604) the Hoare annotation is: true [2022-11-22 01:25:56,306 INFO L899 garLoopResultBuilder]: For program point L224(lines 224 400) no Hoare annotation was computed. [2022-11-22 01:25:56,306 INFO L899 garLoopResultBuilder]: For program point L158(lines 158 400) no Hoare annotation was computed. [2022-11-22 01:25:56,306 INFO L899 garLoopResultBuilder]: For program point L59(lines 59 400) no Hoare annotation was computed. [2022-11-22 01:25:56,306 INFO L899 garLoopResultBuilder]: For program point L94(lines 94 400) no Hoare annotation was computed. [2022-11-22 01:25:56,306 INFO L899 garLoopResultBuilder]: For program point L392(lines 392 400) no Hoare annotation was computed. [2022-11-22 01:25:56,306 INFO L899 garLoopResultBuilder]: For program point L326(lines 326 400) no Hoare annotation was computed. [2022-11-22 01:25:56,306 INFO L899 garLoopResultBuilder]: For program point L260(lines 260 400) no Hoare annotation was computed. [2022-11-22 01:25:56,307 INFO L899 garLoopResultBuilder]: For program point L228(lines 228 400) no Hoare annotation was computed. [2022-11-22 01:25:56,307 INFO L899 garLoopResultBuilder]: For program point L162(lines 162 400) no Hoare annotation was computed. [2022-11-22 01:25:56,307 INFO L899 garLoopResultBuilder]: For program point L129(lines 129 400) no Hoare annotation was computed. [2022-11-22 01:25:56,307 INFO L899 garLoopResultBuilder]: For program point L328(lines 328 400) no Hoare annotation was computed. [2022-11-22 01:25:56,307 INFO L899 garLoopResultBuilder]: For program point L196(lines 196 400) no Hoare annotation was computed. [2022-11-22 01:25:56,307 INFO L899 garLoopResultBuilder]: For program point L64(lines 64 400) no Hoare annotation was computed. [2022-11-22 01:25:56,307 INFO L895 garLoopResultBuilder]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse0 (= ~a21~0 1)) (.cse1 (<= ~a16~0 5))) (or (and .cse0 .cse1) (and (= ~a16~0 6) .cse0 (<= 15 ~a8~0)) (= ~a20~0 1) (and (= ~a17~0 1) .cse1))) [2022-11-22 01:25:56,307 INFO L899 garLoopResultBuilder]: For program point L296(lines 296 400) no Hoare annotation was computed. [2022-11-22 01:25:56,308 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 483) no Hoare annotation was computed. [2022-11-22 01:25:56,308 INFO L899 garLoopResultBuilder]: For program point L363(lines 363 400) no Hoare annotation was computed. [2022-11-22 01:25:56,308 INFO L899 garLoopResultBuilder]: For program point L199(lines 199 400) no Hoare annotation was computed. [2022-11-22 01:25:56,308 INFO L899 garLoopResultBuilder]: For program point L365(lines 365 400) no Hoare annotation was computed. [2022-11-22 01:25:56,308 INFO L899 garLoopResultBuilder]: For program point L266(lines 266 400) no Hoare annotation was computed. [2022-11-22 01:25:56,308 INFO L899 garLoopResultBuilder]: For program point L233(lines 233 400) no Hoare annotation was computed. [2022-11-22 01:25:56,308 INFO L899 garLoopResultBuilder]: For program point L134(lines 134 400) no Hoare annotation was computed. [2022-11-22 01:25:56,311 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:25:56,313 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-22 01:25:56,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:25:56 BoogieIcfgContainer [2022-11-22 01:25:56,327 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-22 01:25:56,328 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-22 01:25:56,328 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-22 01:25:56,328 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-22 01:25:56,328 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:25:49" (3/4) ... [2022-11-22 01:25:56,331 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-22 01:25:56,347 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 110 nodes and edges [2022-11-22 01:25:56,348 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2022-11-22 01:25:56,349 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-11-22 01:25:56,350 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-22 01:25:56,438 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1233b816-b8de-44e4-8a00-23adb5c02a1f/bin/utaipan-g80aRyZoba/witness.graphml [2022-11-22 01:25:56,438 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-22 01:25:56,439 INFO L158 Benchmark]: Toolchain (without parser) took 9892.54ms. Allocated memory was 125.8MB in the beginning and 234.9MB in the end (delta: 109.1MB). Free memory was 94.3MB in the beginning and 103.2MB in the end (delta: -9.0MB). Peak memory consumption was 101.0MB. Max. memory is 16.1GB. [2022-11-22 01:25:56,439 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 125.8MB. Free memory is still 79.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 01:25:56,439 INFO L158 Benchmark]: CACSL2BoogieTranslator took 692.26ms. Allocated memory is still 125.8MB. Free memory was 93.9MB in the beginning and 66.1MB in the end (delta: 27.8MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-11-22 01:25:56,439 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.28ms. Allocated memory is still 125.8MB. Free memory was 66.1MB in the beginning and 60.6MB in the end (delta: 5.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-22 01:25:56,440 INFO L158 Benchmark]: Boogie Preprocessor took 54.82ms. Allocated memory is still 125.8MB. Free memory was 60.6MB in the beginning and 55.8MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-22 01:25:56,440 INFO L158 Benchmark]: RCFGBuilder took 1643.37ms. Allocated memory is still 125.8MB. Free memory was 55.8MB in the beginning and 38.0MB in the end (delta: 17.8MB). Peak memory consumption was 29.9MB. Max. memory is 16.1GB. [2022-11-22 01:25:56,440 INFO L158 Benchmark]: TraceAbstraction took 7307.88ms. Allocated memory was 161.5MB in the beginning and 234.9MB in the end (delta: 73.4MB). Free memory was 125.8MB in the beginning and 114.8MB in the end (delta: 11.0MB). Peak memory consumption was 84.4MB. Max. memory is 16.1GB. [2022-11-22 01:25:56,441 INFO L158 Benchmark]: Witness Printer took 110.44ms. Allocated memory is still 234.9MB. Free memory was 113.7MB in the beginning and 103.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-22 01:25:56,442 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 125.8MB. Free memory is still 79.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 692.26ms. Allocated memory is still 125.8MB. Free memory was 93.9MB in the beginning and 66.1MB in the end (delta: 27.8MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.28ms. Allocated memory is still 125.8MB. Free memory was 66.1MB in the beginning and 60.6MB in the end (delta: 5.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.82ms. Allocated memory is still 125.8MB. Free memory was 60.6MB in the beginning and 55.8MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1643.37ms. Allocated memory is still 125.8MB. Free memory was 55.8MB in the beginning and 38.0MB in the end (delta: 17.8MB). Peak memory consumption was 29.9MB. Max. memory is 16.1GB. * TraceAbstraction took 7307.88ms. Allocated memory was 161.5MB in the beginning and 234.9MB in the end (delta: 73.4MB). Free memory was 125.8MB in the beginning and 114.8MB in the end (delta: 11.0MB). Peak memory consumption was 84.4MB. Max. memory is 16.1GB. * Witness Printer took 110.44ms. Allocated memory is still 234.9MB. Free memory was 113.7MB in the beginning and 103.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. 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: 483]: 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, 76 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.2s, OverallIterations: 10, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 641 SdHoareTripleChecker+Valid, 3.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 641 mSDsluCounter, 490 SdHoareTripleChecker+Invalid, 2.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 45 mSDsCounter, 666 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2439 IncrementalHoareTripleChecker+Invalid, 3105 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 666 mSolverCounterUnsat, 445 mSDtfsCounter, 2439 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=926occurred in iteration=9, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 426 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 37 NumberOfFragments, 57 HoareAnnotationTreeSize, 3 FomulaSimplifications, 804 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 590 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 1123 NumberOfCodeBlocks, 1123 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 1113 ConstructedInterpolants, 0 QuantifiedInterpolants, 2522 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 614/614 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: 593]: Loop Invariant Derived loop invariant: (((a21 == 1 && a16 <= 5) || ((a16 == 6 && a21 == 1) && 15 <= a8)) || a20 == 1) || (a17 == 1 && a16 <= 5) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (((a21 == 1 && a16 <= 5) || ((a16 == 6 && a21 == 1) && 15 <= a8)) || a20 == 1) || (a17 == 1 && a16 <= 5) RESULT: Ultimate proved your program to be correct! [2022-11-22 01:25:56,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1233b816-b8de-44e4-8a00-23adb5c02a1f/bin/utaipan-g80aRyZoba/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