./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label34.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_d3f1ce34-970e-4ffd-8ad7-c8d68d7b2631/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f1ce34-970e-4ffd-8ad7-c8d68d7b2631/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f1ce34-970e-4ffd-8ad7-c8d68d7b2631/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f1ce34-970e-4ffd-8ad7-c8d68d7b2631/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label34.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f1ce34-970e-4ffd-8ad7-c8d68d7b2631/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f1ce34-970e-4ffd-8ad7-c8d68d7b2631/bin/utaipan-I9t0OCRTmS --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 e946c16a3da25e9b3a559976cb9b3bd2f39939274bf6ba18ec27980a89869469 --- 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-8393723 [2022-11-19 06:52:53,632 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:52:53,635 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:52:53,681 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:52:53,686 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:52:53,692 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:52:53,694 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:52:53,698 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:52:53,708 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:52:53,709 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:52:53,714 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:52:53,715 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:52:53,717 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:52:53,721 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:52:53,723 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:52:53,725 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:52:53,728 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:52:53,731 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:52:53,740 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:52:53,742 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:52:53,746 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:52:53,748 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:52:53,749 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:52:53,751 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:52:53,756 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:52:53,756 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:52:53,756 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:52:53,758 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:52:53,758 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:52:53,759 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:52:53,760 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:52:53,761 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:52:53,762 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:52:53,763 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:52:53,764 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:52:53,765 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:52:53,766 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:52:53,766 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:52:53,766 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:52:53,768 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:52:53,769 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:52:53,770 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f1ce34-970e-4ffd-8ad7-c8d68d7b2631/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 06:52:53,802 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:52:53,803 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:52:53,803 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:52:53,803 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:52:53,804 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:52:53,804 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:52:53,805 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:52:53,805 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:52:53,805 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:52:53,806 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:52:53,806 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:52:53,806 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:52:53,806 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:52:53,807 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:52:53,807 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:52:53,807 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:52:53,807 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:52:53,808 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:52:53,808 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:52:53,809 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 06:52:53,809 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:52:53,809 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 06:52:53,810 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:52:53,810 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:52:53,810 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:52:53,810 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:52:53,817 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 06:52:53,818 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:52:53,819 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:52:53,819 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:52:53,819 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:52:53,820 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:52:53,820 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:52:53,820 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:52:53,821 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:52:53,821 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:52:53,822 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:52:53,822 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:52:53,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:52:53,823 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:52:53,823 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:52:53,823 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_d3f1ce34-970e-4ffd-8ad7-c8d68d7b2631/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f1ce34-970e-4ffd-8ad7-c8d68d7b2631/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e946c16a3da25e9b3a559976cb9b3bd2f39939274bf6ba18ec27980a89869469 [2022-11-19 06:52:54,152 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:52:54,193 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:52:54,196 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:52:54,198 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:52:54,199 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:52:54,201 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f1ce34-970e-4ffd-8ad7-c8d68d7b2631/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/eca-rers2012/Problem02_label34.c [2022-11-19 06:52:54,303 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f1ce34-970e-4ffd-8ad7-c8d68d7b2631/bin/utaipan-I9t0OCRTmS/data/78f777de0/c8efa6d0676f4f50ba45d41d2d23bd22/FLAG128501c2d [2022-11-19 06:52:55,027 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:52:55,039 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f1ce34-970e-4ffd-8ad7-c8d68d7b2631/sv-benchmarks/c/eca-rers2012/Problem02_label34.c [2022-11-19 06:52:55,050 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f1ce34-970e-4ffd-8ad7-c8d68d7b2631/bin/utaipan-I9t0OCRTmS/data/78f777de0/c8efa6d0676f4f50ba45d41d2d23bd22/FLAG128501c2d [2022-11-19 06:52:55,226 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f1ce34-970e-4ffd-8ad7-c8d68d7b2631/bin/utaipan-I9t0OCRTmS/data/78f777de0/c8efa6d0676f4f50ba45d41d2d23bd22 [2022-11-19 06:52:55,229 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:52:55,231 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:52:55,233 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:52:55,233 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:52:55,237 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:52:55,238 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:52:55" (1/1) ... [2022-11-19 06:52:55,240 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b50d568 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:55, skipping insertion in model container [2022-11-19 06:52:55,240 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:52:55" (1/1) ... [2022-11-19 06:52:55,250 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:52:55,317 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:52:55,696 WARN L234 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_d3f1ce34-970e-4ffd-8ad7-c8d68d7b2631/sv-benchmarks/c/eca-rers2012/Problem02_label34.c[16560,16573] [2022-11-19 06:52:55,760 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:52:55,771 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:52:55,901 WARN L234 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_d3f1ce34-970e-4ffd-8ad7-c8d68d7b2631/sv-benchmarks/c/eca-rers2012/Problem02_label34.c[16560,16573] [2022-11-19 06:52:55,919 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:52:55,935 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:52:55,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:55 WrapperNode [2022-11-19 06:52:55,935 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:52:55,936 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:52:55,936 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:52:55,937 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:52:55,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:55" (1/1) ... [2022-11-19 06:52:55,981 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:55" (1/1) ... [2022-11-19 06:52:56,060 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 668 [2022-11-19 06:52:56,061 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:52:56,062 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:52:56,062 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:52:56,063 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:52:56,073 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:55" (1/1) ... [2022-11-19 06:52:56,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:55" (1/1) ... [2022-11-19 06:52:56,090 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:55" (1/1) ... [2022-11-19 06:52:56,095 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:55" (1/1) ... [2022-11-19 06:52:56,130 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:55" (1/1) ... [2022-11-19 06:52:56,156 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:55" (1/1) ... [2022-11-19 06:52:56,162 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:55" (1/1) ... [2022-11-19 06:52:56,173 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:55" (1/1) ... [2022-11-19 06:52:56,178 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:52:56,179 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:52:56,179 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:52:56,180 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:52:56,181 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:55" (1/1) ... [2022-11-19 06:52:56,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:52:56,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f1ce34-970e-4ffd-8ad7-c8d68d7b2631/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:52:56,229 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f1ce34-970e-4ffd-8ad7-c8d68d7b2631/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:52:56,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f1ce34-970e-4ffd-8ad7-c8d68d7b2631/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:52:56,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:52:56,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 06:52:56,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:52:56,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:52:56,446 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:52:56,448 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:52:57,722 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:52:57,985 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:52:57,985 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 06:52:57,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:52:57 BoogieIcfgContainer [2022-11-19 06:52:57,989 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:52:57,993 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:52:57,993 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:52:57,997 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:52:58,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:52:55" (1/3) ... [2022-11-19 06:52:58,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bd37532 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:52:58, skipping insertion in model container [2022-11-19 06:52:58,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:55" (2/3) ... [2022-11-19 06:52:58,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bd37532 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:52:58, skipping insertion in model container [2022-11-19 06:52:58,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:52:57" (3/3) ... [2022-11-19 06:52:58,010 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label34.c [2022-11-19 06:52:58,031 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:52:58,031 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 06:52:58,086 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:52:58,093 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;@1388a5f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:52:58,094 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 06:52:58,099 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 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) [2022-11-19 06:52:58,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-19 06:52:58,108 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:58,109 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:52:58,110 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:52:58,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:58,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1243321779, now seen corresponding path program 1 times [2022-11-19 06:52:58,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:52:58,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013432417] [2022-11-19 06:52:58,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:58,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:52:58,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:58,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:52:58,717 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:52:58,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013432417] [2022-11-19 06:52:58,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013432417] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:52:58,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:52:58,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:52:58,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69746822] [2022-11-19 06:52:58,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:52:58,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:52:58,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:52:58,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:52:58,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:52:58,783 INFO L87 Difference]: Start difference. First operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 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 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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) [2022-11-19 06:52:59,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:52:59,507 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2022-11-19 06:52:59,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:52:59,510 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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 80 [2022-11-19 06:52:59,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:52:59,525 INFO L225 Difference]: With dead ends: 251 [2022-11-19 06:52:59,526 INFO L226 Difference]: Without dead ends: 163 [2022-11-19 06:52:59,530 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 [2022-11-19 06:52:59,534 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 58 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-19 06:52:59,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 11 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-19 06:52:59,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-11-19 06:52:59,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2022-11-19 06:52:59,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.9320987654320987) internal successors, (313), 162 states have internal predecessors, (313), 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) [2022-11-19 06:52:59,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 313 transitions. [2022-11-19 06:52:59,598 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 313 transitions. Word has length 80 [2022-11-19 06:52:59,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:52:59,599 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 313 transitions. [2022-11-19 06:52:59,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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) [2022-11-19 06:52:59,600 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 313 transitions. [2022-11-19 06:52:59,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-19 06:52:59,603 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:59,604 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:52:59,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 06:52:59,605 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:52:59,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:59,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1299315865, now seen corresponding path program 1 times [2022-11-19 06:52:59,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:52:59,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303587843] [2022-11-19 06:52:59,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:59,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:52:59,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:59,884 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:52:59,884 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:52:59,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303587843] [2022-11-19 06:52:59,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303587843] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:52:59,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:52:59,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:52:59,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909860779] [2022-11-19 06:52:59,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:52:59,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:52:59,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:52:59,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:52:59,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:52:59,889 INFO L87 Difference]: Start difference. First operand 163 states and 313 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 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) [2022-11-19 06:53:00,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:53:00,428 INFO L93 Difference]: Finished difference Result 487 states and 937 transitions. [2022-11-19 06:53:00,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:53:00,429 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 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 [2022-11-19 06:53:00,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:53:00,432 INFO L225 Difference]: With dead ends: 487 [2022-11-19 06:53:00,432 INFO L226 Difference]: Without dead ends: 325 [2022-11-19 06:53:00,433 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 [2022-11-19 06:53:00,435 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 115 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 06:53:00,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 20 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-19 06:53:00,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2022-11-19 06:53:00,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 323. [2022-11-19 06:53:00,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 322 states have (on average 1.84472049689441) internal successors, (594), 322 states have internal predecessors, (594), 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) [2022-11-19 06:53:00,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 594 transitions. [2022-11-19 06:53:00,490 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 594 transitions. Word has length 91 [2022-11-19 06:53:00,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:53:00,491 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 594 transitions. [2022-11-19 06:53:00,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 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) [2022-11-19 06:53:00,492 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 594 transitions. [2022-11-19 06:53:00,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-19 06:53:00,502 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:53:00,502 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:53:00,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 06:53:00,503 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:53:00,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:53:00,504 INFO L85 PathProgramCache]: Analyzing trace with hash 588064850, now seen corresponding path program 1 times [2022-11-19 06:53:00,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:53:00,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195928987] [2022-11-19 06:53:00,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:53:00,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:53:00,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:53:00,902 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-19 06:53:00,902 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:53:00,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195928987] [2022-11-19 06:53:00,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195928987] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:53:00,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:53:00,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:53:00,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863471901] [2022-11-19 06:53:00,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:53:00,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:53:00,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:53:00,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:53:00,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:53:00,905 INFO L87 Difference]: Start difference. First operand 323 states and 594 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) [2022-11-19 06:53:01,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:53:01,427 INFO L93 Difference]: Finished difference Result 885 states and 1638 transitions. [2022-11-19 06:53:01,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:53:01,428 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 95 [2022-11-19 06:53:01,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:53:01,431 INFO L225 Difference]: With dead ends: 885 [2022-11-19 06:53:01,431 INFO L226 Difference]: Without dead ends: 563 [2022-11-19 06:53:01,438 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 [2022-11-19 06:53:01,443 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 78 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 06:53:01,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 66 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-19 06:53:01,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2022-11-19 06:53:01,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 483. [2022-11-19 06:53:01,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.616182572614108) internal successors, (779), 482 states have internal predecessors, (779), 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) [2022-11-19 06:53:01,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 779 transitions. [2022-11-19 06:53:01,473 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 779 transitions. Word has length 95 [2022-11-19 06:53:01,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:53:01,474 INFO L495 AbstractCegarLoop]: Abstraction has 483 states and 779 transitions. [2022-11-19 06:53:01,474 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) [2022-11-19 06:53:01,474 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 779 transitions. [2022-11-19 06:53:01,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-19 06:53:01,479 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:53:01,480 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:53:01,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 06:53:01,480 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:53:01,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:53:01,481 INFO L85 PathProgramCache]: Analyzing trace with hash 341408237, now seen corresponding path program 1 times [2022-11-19 06:53:01,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:53:01,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564184313] [2022-11-19 06:53:01,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:53:01,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:53:01,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:53:01,705 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-19 06:53:01,705 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:53:01,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564184313] [2022-11-19 06:53:01,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564184313] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:53:01,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:53:01,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:53:01,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813405434] [2022-11-19 06:53:01,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:53:01,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:53:01,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:53:01,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:53:01,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:53:01,708 INFO L87 Difference]: Start difference. First operand 483 states and 779 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2022-11-19 06:53:02,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:53:02,195 INFO L93 Difference]: Finished difference Result 1205 states and 2008 transitions. [2022-11-19 06:53:02,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:53:02,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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 100 [2022-11-19 06:53:02,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:53:02,199 INFO L225 Difference]: With dead ends: 1205 [2022-11-19 06:53:02,199 INFO L226 Difference]: Without dead ends: 723 [2022-11-19 06:53:02,200 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 [2022-11-19 06:53:02,206 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 77 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 06:53:02,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 139 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 06:53:02,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2022-11-19 06:53:02,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 643. [2022-11-19 06:53:02,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 642 states have (on average 1.5093457943925233) internal successors, (969), 642 states have internal predecessors, (969), 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) [2022-11-19 06:53:02,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 969 transitions. [2022-11-19 06:53:02,249 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 969 transitions. Word has length 100 [2022-11-19 06:53:02,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:53:02,250 INFO L495 AbstractCegarLoop]: Abstraction has 643 states and 969 transitions. [2022-11-19 06:53:02,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2022-11-19 06:53:02,251 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 969 transitions. [2022-11-19 06:53:02,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-19 06:53:02,290 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:53:02,290 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1] [2022-11-19 06:53:02,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 06:53:02,291 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:53:02,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:53:02,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1329931491, now seen corresponding path program 1 times [2022-11-19 06:53:02,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:53:02,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026649904] [2022-11-19 06:53:02,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:53:02,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:53:02,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:53:02,391 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-19 06:53:02,391 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:53:02,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026649904] [2022-11-19 06:53:02,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026649904] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:53:02,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:53:02,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:53:02,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899958382] [2022-11-19 06:53:02,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:53:02,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:53:02,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:53:02,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:53:02,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:53:02,397 INFO L87 Difference]: Start difference. First operand 643 states and 969 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 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) [2022-11-19 06:53:02,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:53:02,856 INFO L93 Difference]: Finished difference Result 1765 states and 2719 transitions. [2022-11-19 06:53:02,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:53:02,857 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 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 101 [2022-11-19 06:53:02,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:53:02,862 INFO L225 Difference]: With dead ends: 1765 [2022-11-19 06:53:02,862 INFO L226 Difference]: Without dead ends: 1123 [2022-11-19 06:53:02,863 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 [2022-11-19 06:53:02,865 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 109 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 06:53:02,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 30 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 06:53:02,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2022-11-19 06:53:02,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 963. [2022-11-19 06:53:02,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 962 states have (on average 1.4386694386694387) internal successors, (1384), 962 states have internal predecessors, (1384), 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) [2022-11-19 06:53:02,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1384 transitions. [2022-11-19 06:53:02,902 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1384 transitions. Word has length 101 [2022-11-19 06:53:02,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:53:02,903 INFO L495 AbstractCegarLoop]: Abstraction has 963 states and 1384 transitions. [2022-11-19 06:53:02,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 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) [2022-11-19 06:53:02,904 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1384 transitions. [2022-11-19 06:53:02,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-19 06:53:02,915 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:53:02,916 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-19 06:53:02,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 06:53:02,916 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:53:02,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:53:02,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1360775449, now seen corresponding path program 1 times [2022-11-19 06:53:02,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:53:02,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215033548] [2022-11-19 06:53:02,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:53:02,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:53:02,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:53:03,166 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-19 06:53:03,167 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:53:03,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215033548] [2022-11-19 06:53:03,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215033548] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:53:03,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:53:03,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:53:03,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542023380] [2022-11-19 06:53:03,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:53:03,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:53:03,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:53:03,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:53:03,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:53:03,171 INFO L87 Difference]: Start difference. First operand 963 states and 1384 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2022-11-19 06:53:03,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:53:03,628 INFO L93 Difference]: Finished difference Result 2245 states and 3192 transitions. [2022-11-19 06:53:03,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:53:03,629 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 135 [2022-11-19 06:53:03,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:53:03,635 INFO L225 Difference]: With dead ends: 2245 [2022-11-19 06:53:03,635 INFO L226 Difference]: Without dead ends: 1283 [2022-11-19 06:53:03,636 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 [2022-11-19 06:53:03,640 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 73 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 06:53:03,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 30 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 06:53:03,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2022-11-19 06:53:03,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 1283. [2022-11-19 06:53:03,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1283 states, 1282 states have (on average 1.3525741029641185) internal successors, (1734), 1282 states have internal predecessors, (1734), 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) [2022-11-19 06:53:03,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1283 states to 1283 states and 1734 transitions. [2022-11-19 06:53:03,689 INFO L78 Accepts]: Start accepts. Automaton has 1283 states and 1734 transitions. Word has length 135 [2022-11-19 06:53:03,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:53:03,691 INFO L495 AbstractCegarLoop]: Abstraction has 1283 states and 1734 transitions. [2022-11-19 06:53:03,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2022-11-19 06:53:03,691 INFO L276 IsEmpty]: Start isEmpty. Operand 1283 states and 1734 transitions. [2022-11-19 06:53:03,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-19 06:53:03,695 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:53:03,695 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, 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] [2022-11-19 06:53:03,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 06:53:03,696 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:53:03,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:53:03,697 INFO L85 PathProgramCache]: Analyzing trace with hash -396855325, now seen corresponding path program 1 times [2022-11-19 06:53:03,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:53:03,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600457977] [2022-11-19 06:53:03,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:53:03,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:53:03,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:53:04,175 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 64 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-19 06:53:04,175 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:53:04,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600457977] [2022-11-19 06:53:04,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600457977] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:53:04,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771773404] [2022-11-19 06:53:04,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:53:04,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:53:04,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f1ce34-970e-4ffd-8ad7-c8d68d7b2631/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:53:04,183 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f1ce34-970e-4ffd-8ad7-c8d68d7b2631/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:53:04,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f1ce34-970e-4ffd-8ad7-c8d68d7b2631/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 06:53:04,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:53:04,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 06:53:04,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:53:04,433 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-19 06:53:04,433 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:53:04,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771773404] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:53:04,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 06:53:04,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-19 06:53:04,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793171478] [2022-11-19 06:53:04,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:53:04,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:53:04,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:53:04,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:53:04,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 06:53:04,436 INFO L87 Difference]: Start difference. First operand 1283 states and 1734 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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) [2022-11-19 06:53:05,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:53:05,002 INFO L93 Difference]: Finished difference Result 2885 states and 3967 transitions. [2022-11-19 06:53:05,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:53:05,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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 139 [2022-11-19 06:53:05,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:53:05,011 INFO L225 Difference]: With dead ends: 2885 [2022-11-19 06:53:05,012 INFO L226 Difference]: Without dead ends: 1603 [2022-11-19 06:53:05,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 06:53:05,015 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 55 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 06:53:05,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 66 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-19 06:53:05,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1603 states. [2022-11-19 06:53:05,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1603 to 1443. [2022-11-19 06:53:05,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1443 states, 1442 states have (on average 1.3307905686546464) internal successors, (1919), 1442 states have internal predecessors, (1919), 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) [2022-11-19 06:53:05,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 1919 transitions. [2022-11-19 06:53:05,059 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 1919 transitions. Word has length 139 [2022-11-19 06:53:05,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:53:05,060 INFO L495 AbstractCegarLoop]: Abstraction has 1443 states and 1919 transitions. [2022-11-19 06:53:05,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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) [2022-11-19 06:53:05,060 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 1919 transitions. [2022-11-19 06:53:05,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-19 06:53:05,064 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:53:05,065 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-11-19 06:53:05,076 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f1ce34-970e-4ffd-8ad7-c8d68d7b2631/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-19 06:53:05,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f1ce34-970e-4ffd-8ad7-c8d68d7b2631/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:53:05,271 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:53:05,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:53:05,272 INFO L85 PathProgramCache]: Analyzing trace with hash 830600165, now seen corresponding path program 1 times [2022-11-19 06:53:05,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:53:05,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570433052] [2022-11-19 06:53:05,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:53:05,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:53:05,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:53:05,502 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-19 06:53:05,503 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:53:05,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570433052] [2022-11-19 06:53:05,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570433052] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:53:05,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:53:05,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:53:05,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851485315] [2022-11-19 06:53:05,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:53:05,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:53:05,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:53:05,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:53:05,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:53:05,510 INFO L87 Difference]: Start difference. First operand 1443 states and 1919 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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) [2022-11-19 06:53:06,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:53:06,016 INFO L93 Difference]: Finished difference Result 2885 states and 3837 transitions. [2022-11-19 06:53:06,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:53:06,017 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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 145 [2022-11-19 06:53:06,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:53:06,022 INFO L225 Difference]: With dead ends: 2885 [2022-11-19 06:53:06,023 INFO L226 Difference]: Without dead ends: 1443 [2022-11-19 06:53:06,027 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 [2022-11-19 06:53:06,028 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 78 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 06:53:06,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 143 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-19 06:53:06,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1443 states. [2022-11-19 06:53:06,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1443 to 1443. [2022-11-19 06:53:06,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1443 states, 1442 states have (on average 1.2753120665742026) internal successors, (1839), 1442 states have internal predecessors, (1839), 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) [2022-11-19 06:53:06,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 1839 transitions. [2022-11-19 06:53:06,069 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 1839 transitions. Word has length 145 [2022-11-19 06:53:06,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:53:06,069 INFO L495 AbstractCegarLoop]: Abstraction has 1443 states and 1839 transitions. [2022-11-19 06:53:06,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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) [2022-11-19 06:53:06,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 1839 transitions. [2022-11-19 06:53:06,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-19 06:53:06,074 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:53:06,074 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-19 06:53:06,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 06:53:06,075 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:53:06,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:53:06,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1567210950, now seen corresponding path program 1 times [2022-11-19 06:53:06,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:53:06,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489742234] [2022-11-19 06:53:06,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:53:06,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:53:06,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:53:06,659 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 87 proven. 8 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-19 06:53:06,660 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:53:06,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489742234] [2022-11-19 06:53:06,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489742234] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:53:06,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459775714] [2022-11-19 06:53:06,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:53:06,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:53:06,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f1ce34-970e-4ffd-8ad7-c8d68d7b2631/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:53:06,663 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f1ce34-970e-4ffd-8ad7-c8d68d7b2631/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:53:06,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f1ce34-970e-4ffd-8ad7-c8d68d7b2631/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 06:53:06,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:53:06,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 06:53:06,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:53:06,902 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-19 06:53:06,903 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:53:06,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459775714] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:53:06,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 06:53:06,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-19 06:53:06,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582421898] [2022-11-19 06:53:06,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:53:06,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:53:06,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:53:06,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:53:06,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-19 06:53:06,906 INFO L87 Difference]: Start difference. First operand 1443 states and 1839 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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) [2022-11-19 06:53:07,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:53:07,364 INFO L93 Difference]: Finished difference Result 3445 states and 4447 transitions. [2022-11-19 06:53:07,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:53:07,365 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 154 [2022-11-19 06:53:07,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:53:07,373 INFO L225 Difference]: With dead ends: 3445 [2022-11-19 06:53:07,373 INFO L226 Difference]: Without dead ends: 1923 [2022-11-19 06:53:07,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-19 06:53:07,378 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 68 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 06:53:07,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 147 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 06:53:07,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1923 states. [2022-11-19 06:53:07,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1923 to 1843. [2022-11-19 06:53:07,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1843 states, 1842 states have (on average 1.239413680781759) internal successors, (2283), 1842 states have internal predecessors, (2283), 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) [2022-11-19 06:53:07,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1843 states to 1843 states and 2283 transitions. [2022-11-19 06:53:07,436 INFO L78 Accepts]: Start accepts. Automaton has 1843 states and 2283 transitions. Word has length 154 [2022-11-19 06:53:07,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:53:07,437 INFO L495 AbstractCegarLoop]: Abstraction has 1843 states and 2283 transitions. [2022-11-19 06:53:07,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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) [2022-11-19 06:53:07,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1843 states and 2283 transitions. [2022-11-19 06:53:07,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-11-19 06:53:07,443 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:53:07,443 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1] [2022-11-19 06:53:07,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f1ce34-970e-4ffd-8ad7-c8d68d7b2631/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 06:53:07,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f1ce34-970e-4ffd-8ad7-c8d68d7b2631/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:53:07,650 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:53:07,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:53:07,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1927329005, now seen corresponding path program 1 times [2022-11-19 06:53:07,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:53:07,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197844550] [2022-11-19 06:53:07,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:53:07,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:53:07,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:53:08,016 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-19 06:53:08,017 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:53:08,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197844550] [2022-11-19 06:53:08,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197844550] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:53:08,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:53:08,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:53:08,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16473321] [2022-11-19 06:53:08,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:53:08,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:53:08,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:53:08,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:53:08,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:53:08,020 INFO L87 Difference]: Start difference. First operand 1843 states and 2283 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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) [2022-11-19 06:53:08,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:53:08,513 INFO L93 Difference]: Finished difference Result 4245 states and 5376 transitions. [2022-11-19 06:53:08,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:53:08,514 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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 166 [2022-11-19 06:53:08,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:53:08,524 INFO L225 Difference]: With dead ends: 4245 [2022-11-19 06:53:08,524 INFO L226 Difference]: Without dead ends: 2403 [2022-11-19 06:53:08,527 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 [2022-11-19 06:53:08,528 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 45 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 06:53:08,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 111 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 06:53:08,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2403 states. [2022-11-19 06:53:08,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2403 to 2403. [2022-11-19 06:53:08,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2403 states, 2402 states have (on average 1.2373022481265612) internal successors, (2972), 2402 states have internal predecessors, (2972), 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) [2022-11-19 06:53:08,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2403 states to 2403 states and 2972 transitions. [2022-11-19 06:53:08,607 INFO L78 Accepts]: Start accepts. Automaton has 2403 states and 2972 transitions. Word has length 166 [2022-11-19 06:53:08,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:53:08,609 INFO L495 AbstractCegarLoop]: Abstraction has 2403 states and 2972 transitions. [2022-11-19 06:53:08,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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) [2022-11-19 06:53:08,609 INFO L276 IsEmpty]: Start isEmpty. Operand 2403 states and 2972 transitions. [2022-11-19 06:53:08,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-19 06:53:08,616 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:53:08,616 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 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, 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, 1, 1, 1] [2022-11-19 06:53:08,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-19 06:53:08,617 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:53:08,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:53:08,618 INFO L85 PathProgramCache]: Analyzing trace with hash -236929907, now seen corresponding path program 1 times [2022-11-19 06:53:08,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:53:08,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833860692] [2022-11-19 06:53:08,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:53:08,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:53:08,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:53:08,823 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-19 06:53:08,823 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:53:08,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833860692] [2022-11-19 06:53:08,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833860692] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:53:08,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:53:08,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:53:08,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660090375] [2022-11-19 06:53:08,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:53:08,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:53:08,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:53:08,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:53:08,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:53:08,827 INFO L87 Difference]: Start difference. First operand 2403 states and 2972 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 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) [2022-11-19 06:53:09,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:53:09,089 INFO L93 Difference]: Finished difference Result 4163 states and 5147 transitions. [2022-11-19 06:53:09,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:53:09,090 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 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 172 [2022-11-19 06:53:09,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:53:09,091 INFO L225 Difference]: With dead ends: 4163 [2022-11-19 06:53:09,091 INFO L226 Difference]: Without dead ends: 0 [2022-11-19 06:53:09,094 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 [2022-11-19 06:53:09,095 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 97 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:53:09,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 3 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 06:53:09,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-19 06:53:09,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-19 06:53:09,097 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) [2022-11-19 06:53:09,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-19 06:53:09,097 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 172 [2022-11-19 06:53:09,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:53:09,098 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-19 06:53:09,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 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) [2022-11-19 06:53:09,098 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-19 06:53:09,098 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-19 06:53:09,101 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-19 06:53:09,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-19 06:53:09,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-19 06:53:09,844 INFO L899 garLoopResultBuilder]: For program point L301(lines 301 423) no Hoare annotation was computed. [2022-11-19 06:53:09,844 INFO L899 garLoopResultBuilder]: For program point L235(lines 235 423) no Hoare annotation was computed. [2022-11-19 06:53:09,845 INFO L899 garLoopResultBuilder]: For program point L169(lines 169 423) no Hoare annotation was computed. [2022-11-19 06:53:09,845 INFO L899 garLoopResultBuilder]: For program point L303(lines 303 423) no Hoare annotation was computed. [2022-11-19 06:53:09,845 INFO L899 garLoopResultBuilder]: For program point L105(lines 105 423) no Hoare annotation was computed. [2022-11-19 06:53:09,845 INFO L899 garLoopResultBuilder]: For program point L40(lines 40 423) no Hoare annotation was computed. [2022-11-19 06:53:09,845 INFO L899 garLoopResultBuilder]: For program point L371(lines 371 423) no Hoare annotation was computed. [2022-11-19 06:53:09,845 INFO L899 garLoopResultBuilder]: For program point L307(lines 307 423) no Hoare annotation was computed. [2022-11-19 06:53:09,846 INFO L899 garLoopResultBuilder]: For program point L175(lines 175 423) no Hoare annotation was computed. [2022-11-19 06:53:09,846 INFO L899 garLoopResultBuilder]: For program point L109(lines 109 423) no Hoare annotation was computed. [2022-11-19 06:53:09,846 INFO L899 garLoopResultBuilder]: For program point L242(lines 242 423) no Hoare annotation was computed. [2022-11-19 06:53:09,846 INFO L899 garLoopResultBuilder]: For program point L45(lines 45 423) no Hoare annotation was computed. [2022-11-19 06:53:09,846 INFO L899 garLoopResultBuilder]: For program point L244(lines 244 423) no Hoare annotation was computed. [2022-11-19 06:53:09,846 INFO L899 garLoopResultBuilder]: For program point L179(lines 179 423) no Hoare annotation was computed. [2022-11-19 06:53:09,846 INFO L899 garLoopResultBuilder]: For program point L378(lines 378 423) no Hoare annotation was computed. [2022-11-19 06:53:09,847 INFO L899 garLoopResultBuilder]: For program point L48(lines 48 423) no Hoare annotation was computed. [2022-11-19 06:53:09,847 INFO L899 garLoopResultBuilder]: For program point L247(lines 247 423) no Hoare annotation was computed. [2022-11-19 06:53:09,847 INFO L899 garLoopResultBuilder]: For program point L116(lines 116 423) no Hoare annotation was computed. [2022-11-19 06:53:09,847 INFO L899 garLoopResultBuilder]: For program point L52(lines 52 423) no Hoare annotation was computed. [2022-11-19 06:53:09,847 INFO L899 garLoopResultBuilder]: For program point L185(lines 185 423) no Hoare annotation was computed. [2022-11-19 06:53:09,847 INFO L899 garLoopResultBuilder]: For program point L385(lines 385 423) no Hoare annotation was computed. [2022-11-19 06:53:09,847 INFO L899 garLoopResultBuilder]: For program point L319(lines 319 423) no Hoare annotation was computed. [2022-11-19 06:53:09,847 INFO L899 garLoopResultBuilder]: For program point L189(lines 189 423) no Hoare annotation was computed. [2022-11-19 06:53:09,847 INFO L899 garLoopResultBuilder]: For program point L123(lines 123 423) no Hoare annotation was computed. [2022-11-19 06:53:09,848 INFO L899 garLoopResultBuilder]: For program point L57(lines 57 423) no Hoare annotation was computed. [2022-11-19 06:53:09,848 INFO L899 garLoopResultBuilder]: For program point L388(lines 388 423) no Hoare annotation was computed. [2022-11-19 06:53:09,848 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-19 06:53:09,848 INFO L899 garLoopResultBuilder]: For program point L390(lines 390 423) no Hoare annotation was computed. [2022-11-19 06:53:09,848 INFO L899 garLoopResultBuilder]: For program point L324(lines 324 423) no Hoare annotation was computed. [2022-11-19 06:53:09,848 INFO L899 garLoopResultBuilder]: For program point L258(lines 258 423) no Hoare annotation was computed. [2022-11-19 06:53:09,848 INFO L899 garLoopResultBuilder]: For program point L60(lines 60 423) no Hoare annotation was computed. [2022-11-19 06:53:09,848 INFO L899 garLoopResultBuilder]: For program point L195(lines 195 423) no Hoare annotation was computed. [2022-11-19 06:53:09,849 INFO L899 garLoopResultBuilder]: For program point L129(lines 129 423) no Hoare annotation was computed. [2022-11-19 06:53:09,849 INFO L899 garLoopResultBuilder]: For program point L64(lines 64 423) no Hoare annotation was computed. [2022-11-19 06:53:09,849 INFO L899 garLoopResultBuilder]: For program point L263(lines 263 423) no Hoare annotation was computed. [2022-11-19 06:53:09,849 INFO L899 garLoopResultBuilder]: For program point L197(lines 197 423) no Hoare annotation was computed. [2022-11-19 06:53:09,849 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 476) no Hoare annotation was computed. [2022-11-19 06:53:09,849 INFO L899 garLoopResultBuilder]: For program point L199(lines 199 423) no Hoare annotation was computed. [2022-11-19 06:53:09,849 INFO L899 garLoopResultBuilder]: For program point L133(lines 133 423) no Hoare annotation was computed. [2022-11-19 06:53:09,849 INFO L899 garLoopResultBuilder]: For program point L399(lines 399 423) no Hoare annotation was computed. [2022-11-19 06:53:09,850 INFO L899 garLoopResultBuilder]: For program point L201(lines 201 423) no Hoare annotation was computed. [2022-11-19 06:53:09,850 INFO L899 garLoopResultBuilder]: For program point L69(lines 69 423) no Hoare annotation was computed. [2022-11-19 06:53:09,850 INFO L899 garLoopResultBuilder]: For program point L269(lines 269 423) no Hoare annotation was computed. [2022-11-19 06:53:09,850 INFO L899 garLoopResultBuilder]: For program point L204(lines 204 423) no Hoare annotation was computed. [2022-11-19 06:53:09,850 INFO L899 garLoopResultBuilder]: For program point L271(lines 271 423) no Hoare annotation was computed. [2022-11-19 06:53:09,850 INFO L899 garLoopResultBuilder]: For program point L404(lines 404 423) no Hoare annotation was computed. [2022-11-19 06:53:09,850 INFO L899 garLoopResultBuilder]: For program point L338(lines 338 423) no Hoare annotation was computed. [2022-11-19 06:53:09,850 INFO L899 garLoopResultBuilder]: For program point L140(lines 140 423) no Hoare annotation was computed. [2022-11-19 06:53:09,851 INFO L899 garLoopResultBuilder]: For program point L75(lines 75 423) no Hoare annotation was computed. [2022-11-19 06:53:09,851 INFO L899 garLoopResultBuilder]: For program point L472-1(lines 39 608) no Hoare annotation was computed. [2022-11-19 06:53:09,851 INFO L899 garLoopResultBuilder]: For program point L208(lines 208 423) no Hoare annotation was computed. [2022-11-19 06:53:09,851 INFO L899 garLoopResultBuilder]: For program point L341(lines 341 423) no Hoare annotation was computed. [2022-11-19 06:53:09,851 INFO L899 garLoopResultBuilder]: For program point L408(lines 408 423) no Hoare annotation was computed. [2022-11-19 06:53:09,851 INFO L899 garLoopResultBuilder]: For program point L144(lines 144 423) no Hoare annotation was computed. [2022-11-19 06:53:09,853 INFO L895 garLoopResultBuilder]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse0 (<= 9 ~a28~0)) (.cse3 (<= ~a28~0 10)) (.cse2 (<= ~a17~0 8)) (.cse1 (= ~a25~0 1)) (.cse5 (= ~a11~0 0)) (.cse4 (= ~a19~0 1)) (.cse6 (<= ~a28~0 7))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse0 .cse2 .cse3 .cse4) (and .cse1 .cse2 .cse4) (and (<= 10 ~a28~0) .cse2 .cse3) (and (<= 8 ~a17~0) .cse2 .cse3) (and .cse5 .cse2 .cse4 .cse6) (and .cse1 .cse5 .cse4 .cse6))) [2022-11-19 06:53:09,854 INFO L899 garLoopResultBuilder]: For program point L475-1(lines 39 608) no Hoare annotation was computed. [2022-11-19 06:53:09,854 INFO L899 garLoopResultBuilder]: For program point L79(lines 79 423) no Hoare annotation was computed. [2022-11-19 06:53:09,854 INFO L899 garLoopResultBuilder]: For program point L476(line 476) no Hoare annotation was computed. [2022-11-19 06:53:09,854 INFO L899 garLoopResultBuilder]: For program point L212(lines 212 423) no Hoare annotation was computed. [2022-11-19 06:53:09,854 INFO L902 garLoopResultBuilder]: At program point L610(lines 610 627) the Hoare annotation is: true [2022-11-19 06:53:09,855 INFO L899 garLoopResultBuilder]: For program point L412(lines 412 423) no Hoare annotation was computed. [2022-11-19 06:53:09,855 INFO L899 garLoopResultBuilder]: For program point L347(lines 347 423) no Hoare annotation was computed. [2022-11-19 06:53:09,855 INFO L899 garLoopResultBuilder]: For program point L149(lines 149 423) no Hoare annotation was computed. [2022-11-19 06:53:09,856 INFO L899 garLoopResultBuilder]: For program point L414(lines 414 423) no Hoare annotation was computed. [2022-11-19 06:53:09,856 INFO L899 garLoopResultBuilder]: For program point L84(lines 84 423) no Hoare annotation was computed. [2022-11-19 06:53:09,856 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-19 06:53:09,856 INFO L899 garLoopResultBuilder]: For program point L417(lines 417 423) no Hoare annotation was computed. [2022-11-19 06:53:09,856 INFO L899 garLoopResultBuilder]: For program point L153(lines 153 423) no Hoare annotation was computed. [2022-11-19 06:53:09,857 INFO L895 garLoopResultBuilder]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse0 (<= 9 ~a28~0)) (.cse3 (<= ~a28~0 10)) (.cse2 (<= ~a17~0 8)) (.cse1 (= ~a25~0 1)) (.cse5 (= ~a11~0 0)) (.cse4 (= ~a19~0 1)) (.cse6 (<= ~a28~0 7))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse0 .cse2 .cse3 .cse4) (and .cse1 .cse2 .cse4) (and (<= 10 ~a28~0) .cse2 .cse3) (and (<= 8 ~a17~0) .cse2 .cse3) (and .cse5 .cse2 .cse4 .cse6) (and .cse1 .cse5 .cse4 .cse6))) [2022-11-19 06:53:09,857 INFO L899 garLoopResultBuilder]: For program point L286(lines 286 423) no Hoare annotation was computed. [2022-11-19 06:53:09,857 INFO L899 garLoopResultBuilder]: For program point L419(lines 419 423) no Hoare annotation was computed. [2022-11-19 06:53:09,857 INFO L899 garLoopResultBuilder]: For program point L222(lines 222 423) no Hoare annotation was computed. [2022-11-19 06:53:09,857 INFO L899 garLoopResultBuilder]: For program point L290(lines 290 423) no Hoare annotation was computed. [2022-11-19 06:53:09,857 INFO L899 garLoopResultBuilder]: For program point L158(lines 158 423) no Hoare annotation was computed. [2022-11-19 06:53:09,858 INFO L899 garLoopResultBuilder]: For program point L92(lines 92 423) no Hoare annotation was computed. [2022-11-19 06:53:09,858 INFO L899 garLoopResultBuilder]: For program point L621(line 621) no Hoare annotation was computed. [2022-11-19 06:53:09,858 INFO L899 garLoopResultBuilder]: For program point L225(lines 225 423) no Hoare annotation was computed. [2022-11-19 06:53:09,858 INFO L899 garLoopResultBuilder]: For program point L359(lines 359 423) no Hoare annotation was computed. [2022-11-19 06:53:09,858 INFO L899 garLoopResultBuilder]: For program point L293(lines 293 423) no Hoare annotation was computed. [2022-11-19 06:53:09,858 INFO L899 garLoopResultBuilder]: For program point L228(lines 228 423) no Hoare annotation was computed. [2022-11-19 06:53:09,859 INFO L899 garLoopResultBuilder]: For program point L296(lines 296 423) no Hoare annotation was computed. [2022-11-19 06:53:09,859 INFO L899 garLoopResultBuilder]: For program point L164(lines 164 423) no Hoare annotation was computed. [2022-11-19 06:53:09,859 INFO L899 garLoopResultBuilder]: For program point L364(lines 364 423) no Hoare annotation was computed. [2022-11-19 06:53:09,859 INFO L899 garLoopResultBuilder]: For program point L233(lines 233 423) no Hoare annotation was computed. [2022-11-19 06:53:09,859 INFO L899 garLoopResultBuilder]: For program point L101(lines 101 423) no Hoare annotation was computed. [2022-11-19 06:53:09,864 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:53:09,867 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 06:53:09,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 06:53:09 BoogieIcfgContainer [2022-11-19 06:53:09,914 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 06:53:09,915 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 06:53:09,915 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 06:53:09,915 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 06:53:09,916 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:52:57" (3/4) ... [2022-11-19 06:53:09,919 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-19 06:53:09,950 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 116 nodes and edges [2022-11-19 06:53:09,957 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2022-11-19 06:53:09,959 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2022-11-19 06:53:09,960 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-19 06:53:10,133 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f1ce34-970e-4ffd-8ad7-c8d68d7b2631/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 06:53:10,133 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 06:53:10,134 INFO L158 Benchmark]: Toolchain (without parser) took 14903.54ms. Allocated memory was 102.8MB in the beginning and 260.0MB in the end (delta: 157.3MB). Free memory was 69.4MB in the beginning and 220.5MB in the end (delta: -151.1MB). Peak memory consumption was 149.1MB. Max. memory is 16.1GB. [2022-11-19 06:53:10,134 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 102.8MB. Free memory is still 57.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:53:10,135 INFO L158 Benchmark]: CACSL2BoogieTranslator took 703.01ms. Allocated memory is still 102.8MB. Free memory was 69.2MB in the beginning and 61.9MB in the end (delta: 7.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-19 06:53:10,135 INFO L158 Benchmark]: Boogie Procedure Inliner took 125.05ms. Allocated memory is still 102.8MB. Free memory was 61.9MB in the beginning and 56.5MB in the end (delta: 5.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-19 06:53:10,135 INFO L158 Benchmark]: Boogie Preprocessor took 116.13ms. Allocated memory is still 102.8MB. Free memory was 56.5MB in the beginning and 52.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-19 06:53:10,137 INFO L158 Benchmark]: RCFGBuilder took 1810.30ms. Allocated memory was 102.8MB in the beginning and 125.8MB in the end (delta: 23.1MB). Free memory was 52.3MB in the beginning and 38.5MB in the end (delta: 13.8MB). Peak memory consumption was 46.0MB. Max. memory is 16.1GB. [2022-11-19 06:53:10,138 INFO L158 Benchmark]: TraceAbstraction took 11920.69ms. Allocated memory was 125.8MB in the beginning and 260.0MB in the end (delta: 134.2MB). Free memory was 38.5MB in the beginning and 82.9MB in the end (delta: -44.4MB). Peak memory consumption was 90.7MB. Max. memory is 16.1GB. [2022-11-19 06:53:10,138 INFO L158 Benchmark]: Witness Printer took 218.83ms. Allocated memory is still 260.0MB. Free memory was 82.9MB in the beginning and 220.5MB in the end (delta: -137.6MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. [2022-11-19 06:53:10,140 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 102.8MB. Free memory is still 57.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 703.01ms. Allocated memory is still 102.8MB. Free memory was 69.2MB in the beginning and 61.9MB in the end (delta: 7.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 125.05ms. Allocated memory is still 102.8MB. Free memory was 61.9MB in the beginning and 56.5MB in the end (delta: 5.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 116.13ms. Allocated memory is still 102.8MB. Free memory was 56.5MB in the beginning and 52.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1810.30ms. Allocated memory was 102.8MB in the beginning and 125.8MB in the end (delta: 23.1MB). Free memory was 52.3MB in the beginning and 38.5MB in the end (delta: 13.8MB). Peak memory consumption was 46.0MB. Max. memory is 16.1GB. * TraceAbstraction took 11920.69ms. Allocated memory was 125.8MB in the beginning and 260.0MB in the end (delta: 134.2MB). Free memory was 38.5MB in the beginning and 82.9MB in the end (delta: -44.4MB). Peak memory consumption was 90.7MB. Max. memory is 16.1GB. * Witness Printer took 218.83ms. Allocated memory is still 260.0MB. Free memory was 82.9MB in the beginning and 220.5MB in the end (delta: -137.6MB). Peak memory consumption was 5.0MB. 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: 476]: 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, 85 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 11.8s, OverallIterations: 11, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 5.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 853 SdHoareTripleChecker+Valid, 5.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 853 mSDsluCounter, 766 SdHoareTripleChecker+Invalid, 4.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 49 mSDsCounter, 701 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2586 IncrementalHoareTripleChecker+Invalid, 3287 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 701 mSolverCounterUnsat, 717 mSDtfsCounter, 2586 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 321 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2403occurred in iteration=10, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 11 MinimizatonAttempts, 562 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 51 NumberOfFragments, 167 HoareAnnotationTreeSize, 3 FomulaSimplifications, 152 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 3 FomulaSimplificationsInter, 864 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 1671 NumberOfCodeBlocks, 1671 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 1658 ConstructedInterpolants, 0 QuantifiedInterpolants, 3148 SizeOfPredicates, 0 NumberOfNonLiveVariables, 666 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 13 InterpolantComputations, 11 PerfectInterpolantSequences, 996/1012 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: 616]: Loop Invariant Derived loop invariant: ((((((((9 <= a28 && a25 == 1) && a17 <= 8) && a28 <= 10) || (((9 <= a28 && a17 <= 8) && a28 <= 10) && a19 == 1)) || ((a25 == 1 && a17 <= 8) && a19 == 1)) || ((10 <= a28 && a17 <= 8) && a28 <= 10)) || ((8 <= a17 && a17 <= 8) && a28 <= 10)) || (((a11 == 0 && a17 <= 8) && a19 == 1) && a28 <= 7)) || (((a25 == 1 && a11 == 0) && a19 == 1) && a28 <= 7) - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((((((9 <= a28 && a25 == 1) && a17 <= 8) && a28 <= 10) || (((9 <= a28 && a17 <= 8) && a28 <= 10) && a19 == 1)) || ((a25 == 1 && a17 <= 8) && a19 == 1)) || ((10 <= a28 && a17 <= 8) && a28 <= 10)) || ((8 <= a17 && a17 <= 8) && a28 <= 10)) || (((a11 == 0 && a17 <= 8) && a19 == 1) && a28 <= 7)) || (((a25 == 1 && a11 == 0) && a19 == 1) && a28 <= 7) RESULT: Ultimate proved your program to be correct! [2022-11-19 06:53:10,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3f1ce34-970e-4ffd-8ad7-c8d68d7b2631/bin/utaipan-I9t0OCRTmS/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