./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_14493925-ec71-483e-bba0-f1f878316cf0/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14493925-ec71-483e-bba0-f1f878316cf0/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_14493925-ec71-483e-bba0-f1f878316cf0/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14493925-ec71-483e-bba0-f1f878316cf0/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14493925-ec71-483e-bba0-f1f878316cf0/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14493925-ec71-483e-bba0-f1f878316cf0/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 64bit --witnessprinter.graph.data.programhash b83c28af83745ba79af1b1ebec4b495db7aa2efb3702685bbdc4b86421ef4c0a --- 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 08:15:51,557 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:15:51,560 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:15:51,608 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:15:51,609 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:15:51,610 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:15:51,612 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:15:51,614 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:15:51,624 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:15:51,631 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:15:51,632 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:15:51,633 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:15:51,633 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:15:51,634 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:15:51,635 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:15:51,636 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:15:51,637 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:15:51,638 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:15:51,640 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:15:51,643 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:15:51,644 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:15:51,648 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:15:51,649 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:15:51,650 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:15:51,654 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:15:51,655 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:15:51,655 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:15:51,656 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:15:51,657 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:15:51,658 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:15:51,658 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:15:51,659 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:15:51,664 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:15:51,667 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:15:51,669 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:15:51,669 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:15:51,670 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:15:51,671 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:15:51,671 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:15:51,672 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:15:51,673 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:15:51,674 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14493925-ec71-483e-bba0-f1f878316cf0/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 08:15:51,700 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:15:51,700 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:15:51,700 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:15:51,700 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:15:51,701 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:15:51,701 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:15:51,702 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:15:51,702 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:15:51,702 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:15:51,702 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:15:51,702 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:15:51,703 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:15:51,703 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:15:51,703 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:15:51,703 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:15:51,704 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:15:51,704 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:15:51,704 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:15:51,705 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:15:51,705 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:15:51,705 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:15:51,705 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:15:51,706 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:15:51,706 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:15:51,706 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:15:51,706 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:15:51,706 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:15:51,707 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:15:51,707 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:15:51,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:15:51,707 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:15:51,708 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:15:51,708 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:15:51,708 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:15:51,708 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:15:51,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:15:51,709 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:15:51,709 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:15:51,709 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_14493925-ec71-483e-bba0-f1f878316cf0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14493925-ec71-483e-bba0-f1f878316cf0/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b83c28af83745ba79af1b1ebec4b495db7aa2efb3702685bbdc4b86421ef4c0a [2022-11-19 08:15:52,011 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:15:52,044 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:15:52,047 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:15:52,049 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:15:52,050 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:15:52,052 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14493925-ec71-483e-bba0-f1f878316cf0/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-11-19 08:15:52,144 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14493925-ec71-483e-bba0-f1f878316cf0/bin/utaipan-I9t0OCRTmS/data/70e097f84/e317471945a24de7bea76744fcadc9c8/FLAG4304b1b2d [2022-11-19 08:15:53,117 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:15:53,118 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14493925-ec71-483e-bba0-f1f878316cf0/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-11-19 08:15:53,184 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14493925-ec71-483e-bba0-f1f878316cf0/bin/utaipan-I9t0OCRTmS/data/70e097f84/e317471945a24de7bea76744fcadc9c8/FLAG4304b1b2d [2022-11-19 08:15:53,623 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14493925-ec71-483e-bba0-f1f878316cf0/bin/utaipan-I9t0OCRTmS/data/70e097f84/e317471945a24de7bea76744fcadc9c8 [2022-11-19 08:15:53,626 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:15:53,629 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:15:53,635 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:15:53,635 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:15:53,639 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:15:53,640 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:15:53" (1/1) ... [2022-11-19 08:15:53,641 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53b8bc7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:53, skipping insertion in model container [2022-11-19 08:15:53,642 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:15:53" (1/1) ... [2022-11-19 08:15:53,649 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:15:53,815 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:15:55,638 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_14493925-ec71-483e-bba0-f1f878316cf0/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point_ldv-val-v0.8.cil.out.i[216887,216900] [2022-11-19 08:15:55,692 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:15:55,724 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:15:56,053 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_14493925-ec71-483e-bba0-f1f878316cf0/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point_ldv-val-v0.8.cil.out.i[216887,216900] [2022-11-19 08:15:56,059 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:15:56,175 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:15:56,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:56 WrapperNode [2022-11-19 08:15:56,175 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:15:56,177 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:15:56,177 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:15:56,177 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:15:56,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:56" (1/1) ... [2022-11-19 08:15:56,244 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:56" (1/1) ... [2022-11-19 08:15:56,378 INFO L138 Inliner]: procedures = 187, calls = 873, calls flagged for inlining = 93, calls inlined = 91, statements flattened = 3211 [2022-11-19 08:15:56,379 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:15:56,380 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:15:56,380 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:15:56,381 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:15:56,393 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:56" (1/1) ... [2022-11-19 08:15:56,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:56" (1/1) ... [2022-11-19 08:15:56,438 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:56" (1/1) ... [2022-11-19 08:15:56,448 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:56" (1/1) ... [2022-11-19 08:15:56,626 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:56" (1/1) ... [2022-11-19 08:15:56,641 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:56" (1/1) ... [2022-11-19 08:15:56,655 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:56" (1/1) ... [2022-11-19 08:15:56,668 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:56" (1/1) ... [2022-11-19 08:15:56,691 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:15:56,692 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:15:56,692 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:15:56,693 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:15:56,694 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:56" (1/1) ... [2022-11-19 08:15:56,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:15:56,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14493925-ec71-483e-bba0-f1f878316cf0/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:15:56,729 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14493925-ec71-483e-bba0-f1f878316cf0/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:15:56,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14493925-ec71-483e-bba0-f1f878316cf0/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:15:56,796 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_nonpositive [2022-11-19 08:15:56,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_nonpositive [2022-11-19 08:15:56,796 INFO L130 BoogieDeclarations]: Found specification of procedure sl_tx_timeout [2022-11-19 08:15:56,796 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_tx_timeout [2022-11-19 08:15:56,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-19 08:15:56,797 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-11-19 08:15:56,797 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_1 [2022-11-19 08:15:56,797 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_1 [2022-11-19 08:15:56,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-19 08:15:56,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-19 08:15:56,798 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 08:15:56,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 08:15:56,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 08:15:56,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-19 08:15:56,798 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-19 08:15:56,798 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-19 08:15:56,799 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-19 08:15:56,799 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-11-19 08:15:56,799 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-11-19 08:15:56,799 INFO L130 BoogieDeclarations]: Found specification of procedure slhc_free [2022-11-19 08:15:56,799 INFO L138 BoogieDeclarations]: Found implementation of procedure slhc_free [2022-11-19 08:15:56,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-19 08:15:56,800 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-19 08:15:56,800 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-19 08:15:56,800 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-19 08:15:56,800 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 08:15:56,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 08:15:56,801 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-19 08:15:56,801 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-19 08:15:56,801 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2022-11-19 08:15:56,801 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2022-11-19 08:15:56,801 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-19 08:15:56,802 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-19 08:15:56,802 INFO L130 BoogieDeclarations]: Found specification of procedure sl_free_bufs [2022-11-19 08:15:56,802 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_free_bufs [2022-11-19 08:15:56,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 08:15:56,803 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 08:15:56,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 08:15:56,803 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-19 08:15:56,803 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-19 08:15:56,804 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-19 08:15:56,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-19 08:15:56,804 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 08:15:56,804 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 08:15:56,804 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-19 08:15:56,804 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-19 08:15:56,805 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-11-19 08:15:56,805 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-11-19 08:15:56,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 08:15:56,807 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2022-11-19 08:15:56,807 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2022-11-19 08:15:56,807 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-19 08:15:56,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-19 08:15:56,808 INFO L130 BoogieDeclarations]: Found specification of procedure sl_bump [2022-11-19 08:15:56,809 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_bump [2022-11-19 08:15:56,809 INFO L130 BoogieDeclarations]: Found specification of procedure slip_ioctl [2022-11-19 08:15:56,809 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_ioctl [2022-11-19 08:15:56,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:15:56,810 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-19 08:15:56,811 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-19 08:15:56,811 INFO L130 BoogieDeclarations]: Found specification of procedure slip_close [2022-11-19 08:15:56,811 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_close [2022-11-19 08:15:56,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 08:15:56,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 08:15:56,812 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-19 08:15:56,812 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2022-11-19 08:15:56,812 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2022-11-19 08:15:56,812 INFO L130 BoogieDeclarations]: Found specification of procedure slip_compat_ioctl [2022-11-19 08:15:56,812 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_compat_ioctl [2022-11-19 08:15:56,813 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-19 08:15:56,813 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-19 08:15:56,814 INFO L130 BoogieDeclarations]: Found specification of procedure sl_get_stats64 [2022-11-19 08:15:56,814 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_get_stats64 [2022-11-19 08:15:56,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 08:15:56,814 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-19 08:15:56,814 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-19 08:15:56,815 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-19 08:15:56,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-19 08:15:56,815 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-19 08:15:56,815 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-19 08:15:56,815 INFO L130 BoogieDeclarations]: Found specification of procedure sl_ioctl [2022-11-19 08:15:56,816 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_ioctl [2022-11-19 08:15:56,816 INFO L130 BoogieDeclarations]: Found specification of procedure tty_hangup [2022-11-19 08:15:56,816 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_hangup [2022-11-19 08:15:56,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 08:15:56,817 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2022-11-19 08:15:56,817 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2022-11-19 08:15:56,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 08:15:56,818 INFO L130 BoogieDeclarations]: Found specification of procedure tty_devnum [2022-11-19 08:15:56,819 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_devnum [2022-11-19 08:15:56,819 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-19 08:15:56,819 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-19 08:15:56,820 INFO L130 BoogieDeclarations]: Found specification of procedure slip_hangup [2022-11-19 08:15:56,820 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_hangup [2022-11-19 08:15:56,820 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-19 08:15:56,820 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-19 08:15:56,820 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-19 08:15:56,821 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-19 08:15:56,821 INFO L130 BoogieDeclarations]: Found specification of procedure sl_change_mtu [2022-11-19 08:15:56,821 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_change_mtu [2022-11-19 08:15:56,821 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2022-11-19 08:15:56,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2022-11-19 08:15:56,822 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-19 08:15:56,822 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-19 08:15:56,822 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-19 08:15:56,823 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-19 08:15:56,823 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-19 08:15:56,823 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-19 08:15:56,823 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-19 08:15:56,824 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-19 08:15:56,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 08:15:56,828 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-11-19 08:15:56,828 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-11-19 08:15:56,828 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2022-11-19 08:15:56,828 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2022-11-19 08:15:56,829 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-11-19 08:15:56,830 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-11-19 08:15:56,832 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-19 08:15:56,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:15:56,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:15:56,833 INFO L130 BoogieDeclarations]: Found specification of procedure sl_unlock [2022-11-19 08:15:56,833 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_unlock [2022-11-19 08:15:56,833 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2022-11-19 08:15:56,834 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2022-11-19 08:15:57,536 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:15:57,543 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:15:57,755 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 08:16:01,251 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:16:02,519 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:16:02,520 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 08:16:02,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:16:02 BoogieIcfgContainer [2022-11-19 08:16:02,525 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:16:02,527 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:16:02,528 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:16:02,531 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:16:02,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:15:53" (1/3) ... [2022-11-19 08:16:02,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6be02264 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:16:02, skipping insertion in model container [2022-11-19 08:16:02,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:56" (2/3) ... [2022-11-19 08:16:02,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6be02264 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:16:02, skipping insertion in model container [2022-11-19 08:16:02,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:16:02" (3/3) ... [2022-11-19 08:16:02,535 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-11-19 08:16:02,558 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:16:02,558 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 08:16:02,646 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:16:02,654 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;@1de91e93, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:16:02,654 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 08:16:02,663 INFO L276 IsEmpty]: Start isEmpty. Operand has 787 states, 497 states have (on average 1.3983903420523138) internal successors, (695), 529 states have internal predecessors, (695), 236 states have call successors, (236), 53 states have call predecessors, (236), 52 states have return successors, (231), 229 states have call predecessors, (231), 231 states have call successors, (231) [2022-11-19 08:16:02,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-19 08:16:02,687 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:16:02,688 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-11-19 08:16:02,689 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:16:02,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:16:02,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1273191967, now seen corresponding path program 1 times [2022-11-19 08:16:02,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:16:02,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087486032] [2022-11-19 08:16:02,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:16:02,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:16:03,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:16:03,475 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2022-11-19 08:16:03,476 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:16:03,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087486032] [2022-11-19 08:16:03,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087486032] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:16:03,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:16:03,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:16:03,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425502626] [2022-11-19 08:16:03,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:16:03,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:16:03,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:16:03,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:16:03,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:16:03,524 INFO L87 Difference]: Start difference. First operand has 787 states, 497 states have (on average 1.3983903420523138) internal successors, (695), 529 states have internal predecessors, (695), 236 states have call successors, (236), 53 states have call predecessors, (236), 52 states have return successors, (231), 229 states have call predecessors, (231), 231 states have call successors, (231) Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-19 08:16:05,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:16:06,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:16:06,660 INFO L93 Difference]: Finished difference Result 1986 states and 2907 transitions. [2022-11-19 08:16:06,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:16:06,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2022-11-19 08:16:06,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:16:06,687 INFO L225 Difference]: With dead ends: 1986 [2022-11-19 08:16:06,687 INFO L226 Difference]: Without dead ends: 1169 [2022-11-19 08:16:06,696 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 08:16:06,700 INFO L413 NwaCegarLoop]: 1152 mSDtfsCounter, 662 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 2103 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-19 08:16:06,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [665 Valid, 2103 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 304 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2022-11-19 08:16:06,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2022-11-19 08:16:06,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 1168. [2022-11-19 08:16:06,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1168 states, 736 states have (on average 1.3682065217391304) internal successors, (1007), 769 states have internal predecessors, (1007), 341 states have call successors, (341), 91 states have call predecessors, (341), 90 states have return successors, (341), 337 states have call predecessors, (341), 341 states have call successors, (341) [2022-11-19 08:16:06,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 1689 transitions. [2022-11-19 08:16:06,851 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 1689 transitions. Word has length 124 [2022-11-19 08:16:06,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:16:06,853 INFO L495 AbstractCegarLoop]: Abstraction has 1168 states and 1689 transitions. [2022-11-19 08:16:06,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-19 08:16:06,853 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 1689 transitions. [2022-11-19 08:16:06,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-11-19 08:16:06,862 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:16:06,863 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 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, 1, 1, 1, 1] [2022-11-19 08:16:06,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 08:16:06,863 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:16:06,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:16:06,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1155663160, now seen corresponding path program 1 times [2022-11-19 08:16:06,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:16:06,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752694808] [2022-11-19 08:16:06,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:16:06,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:16:06,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:16:07,378 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2022-11-19 08:16:07,378 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:16:07,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752694808] [2022-11-19 08:16:07,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752694808] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:16:07,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:16:07,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:16:07,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9716468] [2022-11-19 08:16:07,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:16:07,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:16:07,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:16:07,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:16:07,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:16:07,387 INFO L87 Difference]: Start difference. First operand 1168 states and 1689 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-19 08:16:09,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:16:11,067 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:16:13,079 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:16:13,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:16:13,860 INFO L93 Difference]: Finished difference Result 2300 states and 3328 transitions. [2022-11-19 08:16:13,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 08:16:13,863 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 170 [2022-11-19 08:16:13,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:16:13,873 INFO L225 Difference]: With dead ends: 2300 [2022-11-19 08:16:13,880 INFO L226 Difference]: Without dead ends: 1168 [2022-11-19 08:16:13,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:16:13,886 INFO L413 NwaCegarLoop]: 977 mSDtfsCounter, 1 mSDsluCounter, 1949 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2926 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-19 08:16:13,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2926 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 401 Invalid, 2 Unknown, 0 Unchecked, 6.4s Time] [2022-11-19 08:16:13,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2022-11-19 08:16:13,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1168. [2022-11-19 08:16:13,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1168 states, 736 states have (on average 1.3654891304347827) internal successors, (1005), 769 states have internal predecessors, (1005), 341 states have call successors, (341), 91 states have call predecessors, (341), 90 states have return successors, (341), 337 states have call predecessors, (341), 341 states have call successors, (341) [2022-11-19 08:16:13,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 1687 transitions. [2022-11-19 08:16:13,993 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 1687 transitions. Word has length 170 [2022-11-19 08:16:13,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:16:13,995 INFO L495 AbstractCegarLoop]: Abstraction has 1168 states and 1687 transitions. [2022-11-19 08:16:13,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-19 08:16:13,996 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 1687 transitions. [2022-11-19 08:16:14,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-19 08:16:14,007 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:16:14,007 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2022-11-19 08:16:14,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 08:16:14,007 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:16:14,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:16:14,008 INFO L85 PathProgramCache]: Analyzing trace with hash -2064806244, now seen corresponding path program 1 times [2022-11-19 08:16:14,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:16:14,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854675159] [2022-11-19 08:16:14,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:16:14,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:16:14,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:16:14,710 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2022-11-19 08:16:14,710 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:16:14,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854675159] [2022-11-19 08:16:14,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854675159] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:16:14,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:16:14,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:16:14,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221313283] [2022-11-19 08:16:14,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:16:14,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:16:14,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:16:14,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:16:14,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:16:14,716 INFO L87 Difference]: Start difference. First operand 1168 states and 1687 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2022-11-19 08:16:17,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:16:18,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:16:18,266 INFO L93 Difference]: Finished difference Result 1644 states and 2466 transitions. [2022-11-19 08:16:18,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:16:18,267 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 172 [2022-11-19 08:16:18,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:16:18,278 INFO L225 Difference]: With dead ends: 1644 [2022-11-19 08:16:18,278 INFO L226 Difference]: Without dead ends: 1642 [2022-11-19 08:16:18,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:16:18,281 INFO L413 NwaCegarLoop]: 1465 mSDtfsCounter, 607 mSDsluCounter, 2231 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 141 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 3696 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-19 08:16:18,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [638 Valid, 3696 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 461 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2022-11-19 08:16:18,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1642 states. [2022-11-19 08:16:18,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1642 to 1170. [2022-11-19 08:16:18,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1170 states, 738 states have (on average 1.3644986449864498) internal successors, (1007), 771 states have internal predecessors, (1007), 341 states have call successors, (341), 91 states have call predecessors, (341), 90 states have return successors, (341), 337 states have call predecessors, (341), 341 states have call successors, (341) [2022-11-19 08:16:18,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 1689 transitions. [2022-11-19 08:16:18,353 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 1689 transitions. Word has length 172 [2022-11-19 08:16:18,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:16:18,354 INFO L495 AbstractCegarLoop]: Abstraction has 1170 states and 1689 transitions. [2022-11-19 08:16:18,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2022-11-19 08:16:18,354 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 1689 transitions. [2022-11-19 08:16:18,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-11-19 08:16:18,360 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:16:18,360 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:16:18,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 08:16:18,361 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:16:18,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:16:18,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1093809376, now seen corresponding path program 1 times [2022-11-19 08:16:18,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:16:18,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137446655] [2022-11-19 08:16:18,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:16:18,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:16:18,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:16:18,952 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2022-11-19 08:16:18,953 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:16:18,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137446655] [2022-11-19 08:16:18,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137446655] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:16:18,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:16:18,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:16:18,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171611299] [2022-11-19 08:16:18,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:16:18,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:16:18,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:16:18,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:16:18,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:16:18,963 INFO L87 Difference]: Start difference. First operand 1170 states and 1689 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-19 08:16:21,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:16:23,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:16:23,162 INFO L93 Difference]: Finished difference Result 2776 states and 4103 transitions. [2022-11-19 08:16:23,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 08:16:23,162 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 180 [2022-11-19 08:16:23,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:16:23,176 INFO L225 Difference]: With dead ends: 2776 [2022-11-19 08:16:23,177 INFO L226 Difference]: Without dead ends: 1646 [2022-11-19 08:16:23,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:16:23,188 INFO L413 NwaCegarLoop]: 1233 mSDtfsCounter, 1392 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 903 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1493 SdHoareTripleChecker+Valid, 1758 SdHoareTripleChecker+Invalid, 946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:16:23,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1493 Valid, 1758 Invalid, 946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 903 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-19 08:16:23,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1646 states. [2022-11-19 08:16:23,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1646 to 1171. [2022-11-19 08:16:23,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1171 states, 739 states have (on average 1.3640054127198917) internal successors, (1008), 772 states have internal predecessors, (1008), 341 states have call successors, (341), 91 states have call predecessors, (341), 90 states have return successors, (341), 337 states have call predecessors, (341), 341 states have call successors, (341) [2022-11-19 08:16:23,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 1690 transitions. [2022-11-19 08:16:23,282 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 1690 transitions. Word has length 180 [2022-11-19 08:16:23,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:16:23,287 INFO L495 AbstractCegarLoop]: Abstraction has 1171 states and 1690 transitions. [2022-11-19 08:16:23,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-19 08:16:23,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 1690 transitions. [2022-11-19 08:16:23,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-11-19 08:16:23,294 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:16:23,294 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:16:23,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 08:16:23,295 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:16:23,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:16:23,295 INFO L85 PathProgramCache]: Analyzing trace with hash 98444074, now seen corresponding path program 1 times [2022-11-19 08:16:23,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:16:23,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182159653] [2022-11-19 08:16:23,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:16:23,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:16:23,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:16:23,938 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2022-11-19 08:16:23,939 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:16:23,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182159653] [2022-11-19 08:16:23,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182159653] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:16:23,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:16:23,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:16:23,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031352597] [2022-11-19 08:16:23,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:16:23,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:16:23,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:16:23,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:16:23,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:16:23,942 INFO L87 Difference]: Start difference. First operand 1171 states and 1690 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-19 08:16:25,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:16:27,593 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:16:28,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:16:31,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:16:31,089 INFO L93 Difference]: Finished difference Result 2449 states and 3779 transitions. [2022-11-19 08:16:31,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 08:16:31,090 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 181 [2022-11-19 08:16:31,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:16:31,105 INFO L225 Difference]: With dead ends: 2449 [2022-11-19 08:16:31,106 INFO L226 Difference]: Without dead ends: 2447 [2022-11-19 08:16:31,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-19 08:16:31,109 INFO L413 NwaCegarLoop]: 1844 mSDtfsCounter, 1304 mSDsluCounter, 4320 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 403 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1408 SdHoareTripleChecker+Valid, 6164 SdHoareTripleChecker+Invalid, 1122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 403 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-19 08:16:31,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1408 Valid, 6164 Invalid, 1122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [403 Valid, 718 Invalid, 1 Unknown, 0 Unchecked, 6.8s Time] [2022-11-19 08:16:31,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2447 states. [2022-11-19 08:16:31,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2447 to 1173. [2022-11-19 08:16:31,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1173 states, 740 states have (on average 1.3635135135135135) internal successors, (1009), 772 states have internal predecessors, (1009), 342 states have call successors, (342), 91 states have call predecessors, (342), 90 states have return successors, (342), 338 states have call predecessors, (342), 342 states have call successors, (342) [2022-11-19 08:16:31,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1693 transitions. [2022-11-19 08:16:31,229 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1693 transitions. Word has length 181 [2022-11-19 08:16:31,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:16:31,229 INFO L495 AbstractCegarLoop]: Abstraction has 1173 states and 1693 transitions. [2022-11-19 08:16:31,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-19 08:16:31,230 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1693 transitions. [2022-11-19 08:16:31,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-11-19 08:16:31,238 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:16:31,238 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:16:31,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 08:16:31,239 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:16:31,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:16:31,239 INFO L85 PathProgramCache]: Analyzing trace with hash -485771099, now seen corresponding path program 1 times [2022-11-19 08:16:31,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:16:31,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543437797] [2022-11-19 08:16:31,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:16:31,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:16:31,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:16:31,509 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2022-11-19 08:16:31,509 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:16:31,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543437797] [2022-11-19 08:16:31,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543437797] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:16:31,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:16:31,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:16:31,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286970654] [2022-11-19 08:16:31,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:16:31,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:16:31,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:16:31,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:16:31,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:16:31,512 INFO L87 Difference]: Start difference. First operand 1173 states and 1693 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-19 08:16:33,168 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:16:35,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:16:36,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:16:36,591 INFO L93 Difference]: Finished difference Result 2704 states and 3893 transitions. [2022-11-19 08:16:36,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:16:36,593 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 205 [2022-11-19 08:16:36,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:16:36,602 INFO L225 Difference]: With dead ends: 2704 [2022-11-19 08:16:36,603 INFO L226 Difference]: Without dead ends: 1571 [2022-11-19 08:16:36,607 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 08:16:36,608 INFO L413 NwaCegarLoop]: 1468 mSDtfsCounter, 1027 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1030 SdHoareTripleChecker+Valid, 2011 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-19 08:16:36,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1030 Valid, 2011 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 271 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2022-11-19 08:16:36,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1571 states. [2022-11-19 08:16:36,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1571 to 1569. [2022-11-19 08:16:36,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1569 states, 986 states have (on average 1.3580121703853956) internal successors, (1339), 1027 states have internal predecessors, (1339), 456 states have call successors, (456), 128 states have call predecessors, (456), 126 states have return successors, (456), 449 states have call predecessors, (456), 456 states have call successors, (456) [2022-11-19 08:16:36,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 2251 transitions. [2022-11-19 08:16:36,792 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 2251 transitions. Word has length 205 [2022-11-19 08:16:36,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:16:36,793 INFO L495 AbstractCegarLoop]: Abstraction has 1569 states and 2251 transitions. [2022-11-19 08:16:36,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-19 08:16:36,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 2251 transitions. [2022-11-19 08:16:36,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-11-19 08:16:36,803 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:16:36,804 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:16:36,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 08:16:36,804 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:16:36,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:16:36,805 INFO L85 PathProgramCache]: Analyzing trace with hash 354052971, now seen corresponding path program 1 times [2022-11-19 08:16:36,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:16:36,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225794934] [2022-11-19 08:16:36,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:16:36,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:16:36,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:16:37,291 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2022-11-19 08:16:37,292 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:16:37,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225794934] [2022-11-19 08:16:37,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225794934] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:16:37,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:16:37,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:16:37,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031768183] [2022-11-19 08:16:37,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:16:37,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:16:37,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:16:37,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:16:37,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:16:37,294 INFO L87 Difference]: Start difference. First operand 1569 states and 2251 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-19 08:16:39,181 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:16:41,801 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:16:46,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:16:46,121 INFO L93 Difference]: Finished difference Result 4133 states and 6227 transitions. [2022-11-19 08:16:46,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:16:46,122 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 207 [2022-11-19 08:16:46,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:16:46,143 INFO L225 Difference]: With dead ends: 4133 [2022-11-19 08:16:46,143 INFO L226 Difference]: Without dead ends: 3000 [2022-11-19 08:16:46,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-19 08:16:46,153 INFO L413 NwaCegarLoop]: 1664 mSDtfsCounter, 2524 mSDsluCounter, 2182 mSDsCounter, 0 mSdLazyCounter, 1670 mSolverCounterSat, 350 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2625 SdHoareTripleChecker+Valid, 3846 SdHoareTripleChecker+Invalid, 2021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 350 IncrementalHoareTripleChecker+Valid, 1670 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:16:46,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2625 Valid, 3846 Invalid, 2021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [350 Valid, 1670 Invalid, 1 Unknown, 0 Unchecked, 8.1s Time] [2022-11-19 08:16:46,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3000 states. [2022-11-19 08:16:46,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3000 to 1572. [2022-11-19 08:16:46,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1572 states, 989 states have (on average 1.3579373104145602) internal successors, (1343), 1030 states have internal predecessors, (1343), 456 states have call successors, (456), 128 states have call predecessors, (456), 126 states have return successors, (456), 449 states have call predecessors, (456), 456 states have call successors, (456) [2022-11-19 08:16:46,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 2255 transitions. [2022-11-19 08:16:46,519 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 2255 transitions. Word has length 207 [2022-11-19 08:16:46,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:16:46,520 INFO L495 AbstractCegarLoop]: Abstraction has 1572 states and 2255 transitions. [2022-11-19 08:16:46,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-19 08:16:46,520 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 2255 transitions. [2022-11-19 08:16:46,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-11-19 08:16:46,534 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:16:46,534 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:16:46,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 08:16:46,535 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:16:46,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:16:46,535 INFO L85 PathProgramCache]: Analyzing trace with hash 422916455, now seen corresponding path program 1 times [2022-11-19 08:16:46,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:16:46,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564231028] [2022-11-19 08:16:46,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:16:46,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:16:46,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:16:47,293 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2022-11-19 08:16:47,294 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:16:47,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564231028] [2022-11-19 08:16:47,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564231028] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:16:47,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737578144] [2022-11-19 08:16:47,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:16:47,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:16:47,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14493925-ec71-483e-bba0-f1f878316cf0/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:16:47,300 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14493925-ec71-483e-bba0-f1f878316cf0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:16:47,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14493925-ec71-483e-bba0-f1f878316cf0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 08:16:48,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:16:48,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 1863 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 08:16:48,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:16:48,924 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2022-11-19 08:16:48,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:16:49,294 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2022-11-19 08:16:49,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737578144] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:16:49,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [720026681] [2022-11-19 08:16:49,326 INFO L159 IcfgInterpreter]: Started Sifa with 117 locations of interest [2022-11-19 08:16:49,327 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:16:49,332 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:16:49,339 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:16:49,340 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:16:50,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:50,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:50,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:50,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:50,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:50,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:50,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:50,400 INFO L217 Elim1Store]: Index analysis took 265 ms [2022-11-19 08:17:00,235 WARN L233 SmtUtils]: Spent 9.81s on a formula simplification. DAG size of input: 823 DAG size of output: 348 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-19 08:17:00,240 INFO L321 Elim1Store]: treesize reduction 3807, result has 16.8 percent of original size [2022-11-19 08:17:00,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 27 select indices, 27 select index equivalence classes, 365 disjoint index pairs (out of 351 index pairs), introduced 27 new quantified variables, introduced 32 case distinctions, treesize of input 160 treesize of output 859 [2022-11-19 08:17:01,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:01,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:01,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:02,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:02,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:02,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:02,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:02,472 INFO L217 Elim1Store]: Index analysis took 1237 ms [2022-11-19 08:17:20,002 WARN L233 SmtUtils]: Spent 17.50s on a formula simplification. DAG size of input: 1206 DAG size of output: 490 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-19 08:17:20,010 INFO L321 Elim1Store]: treesize reduction 5310, result has 14.3 percent of original size [2022-11-19 08:17:20,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 35 select indices, 35 select index equivalence classes, 392 disjoint index pairs (out of 595 index pairs), introduced 35 new quantified variables, introduced 241 case distinctions, treesize of input 284 treesize of output 1093 [2022-11-19 08:17:24,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-19 08:17:24,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-19 08:17:24,328 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-11-19 08:17:26,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:26,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:26,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:26,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:26,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:26,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:26,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:26,366 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 35 select indices, 35 select index equivalence classes, 595 disjoint index pairs (out of 595 index pairs), introduced 35 new quantified variables, introduced 0 case distinctions, treesize of input 176 treesize of output 106 [2022-11-19 08:17:26,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:26,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:26,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:26,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:26,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:26,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:26,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:26,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 34 select indices, 34 select index equivalence classes, 568 disjoint index pairs (out of 561 index pairs), introduced 34 new quantified variables, introduced 0 case distinctions, treesize of input 171 treesize of output 103 [2022-11-19 08:17:27,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:27,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:27,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:27,011 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 22 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 49 [2022-11-19 08:17:30,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:30,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:30,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:30,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:30,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:30,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:30,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:30,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 34 select indices, 34 select index equivalence classes, 568 disjoint index pairs (out of 561 index pairs), introduced 34 new quantified variables, introduced 0 case distinctions, treesize of input 171 treesize of output 103 [2022-11-19 08:17:31,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:31,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:31,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:31,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:31,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:31,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:31,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:31,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 35 select indices, 35 select index equivalence classes, 595 disjoint index pairs (out of 595 index pairs), introduced 35 new quantified variables, introduced 0 case distinctions, treesize of input 176 treesize of output 106 [2022-11-19 08:17:31,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:31,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:31,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:31,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 22 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 49 [2022-11-19 08:18:04,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 08:18:04,399 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 08:18:04,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-19 08:18:05,112 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 08:18:05,128 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 08:18:05,137 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 08:18:33,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-19 08:18:33,577 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 08:18:33,801 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 08:18:34,248 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 08:18:34,263 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 08:18:34,280 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 08:18:37,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 08:18:37,422 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 08:18:37,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-19 08:18:38,945 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 08:18:39,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 08:18:39,364 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-19 08:18:57,900 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 08:18:58,070 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 08:18:58,768 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 08:18:58,781 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 08:19:12,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 08:19:12,555 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 08:19:13,178 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 08:19:13,204 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 08:19:21,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-19 08:19:22,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-19 08:20:05,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 08:20:05,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 08:20:06,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-19 08:20:06,666 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 08:20:06,670 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 08:20:06,696 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 08:20:29,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-19 08:20:29,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 08:20:30,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 08:20:30,607 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 08:20:30,639 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 08:20:30,641 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 08:22:09,316 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_memset with input of size 570 for LOIs [2022-11-19 08:22:10,018 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_init_zalloc with input of size 136 for LOIs [2022-11-19 08:22:10,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-19 08:22:10,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-19 08:22:11,892 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.meminit with input of size 157 for LOIs [2022-11-19 08:22:11,941 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 164 for LOIs [2022-11-19 08:22:12,089 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_malloc with input of size 569 for LOIs [2022-11-19 08:22:14,637 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:22:27,884 WARN L233 SmtUtils]: Spent 13.13s on a formula simplification. DAG size of input: 1073 DAG size of output: 675 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:22:59,444 WARN L233 SmtUtils]: Spent 23.43s on a formula simplification. DAG size of input: 995 DAG size of output: 889 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:23:24,323 WARN L233 SmtUtils]: Spent 24.41s on a formula simplification. DAG size of input: 999 DAG size of output: 899 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:23:40,809 WARN L233 SmtUtils]: Spent 16.01s on a formula simplification. DAG size of input: 927 DAG size of output: 900 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:23:57,528 WARN L233 SmtUtils]: Spent 16.24s on a formula simplification. DAG size of input: 931 DAG size of output: 904 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:24:25,786 WARN L233 SmtUtils]: Spent 27.59s on a formula simplification. DAG size of input: 1036 DAG size of output: 933 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:24:53,732 WARN L233 SmtUtils]: Spent 27.28s on a formula simplification. DAG size of input: 1040 DAG size of output: 935 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:25:10,285 WARN L233 SmtUtils]: Spent 5.09s on a formula simplification. DAG size of input: 583 DAG size of output: 455 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:25:28,240 WARN L233 SmtUtils]: Spent 17.23s on a formula simplification. DAG size of input: 949 DAG size of output: 917 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:25:46,192 WARN L233 SmtUtils]: Spent 17.24s on a formula simplification. DAG size of input: 949 DAG size of output: 917 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:26:04,349 WARN L233 SmtUtils]: Spent 17.38s on a formula simplification. DAG size of input: 953 DAG size of output: 921 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:26:22,445 WARN L233 SmtUtils]: Spent 17.33s on a formula simplification. DAG size of input: 953 DAG size of output: 921 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:26:53,595 WARN L233 SmtUtils]: Spent 30.18s on a formula simplification. DAG size of input: 1072 DAG size of output: 965 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:27:24,051 WARN L233 SmtUtils]: Spent 29.42s on a formula simplification. DAG size of input: 1076 DAG size of output: 968 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:27:43,905 WARN L233 SmtUtils]: Spent 18.95s on a formula simplification. DAG size of input: 990 DAG size of output: 953 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:28:03,759 WARN L233 SmtUtils]: Spent 18.90s on a formula simplification. DAG size of input: 993 DAG size of output: 956 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:28:13,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [720026681] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:28:13,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:28:13,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [5, 4, 5] total 40 [2022-11-19 08:28:13,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672646466] [2022-11-19 08:28:13,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:28:13,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-19 08:28:13,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:28:13,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-19 08:28:13,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1379, Unknown=0, NotChecked=0, Total=1560 [2022-11-19 08:28:13,323 INFO L87 Difference]: Start difference. First operand 1572 states and 2255 transitions. Second operand has 32 states, 19 states have (on average 4.368421052631579) internal successors, (83), 17 states have internal predecessors, (83), 11 states have call successors, (25), 6 states have call predecessors, (25), 5 states have return successors, (25), 10 states have call predecessors, (25), 11 states have call successors, (25) [2022-11-19 08:28:39,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:28:42,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:28:43,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:28:47,926 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:29:39,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:29:39,400 INFO L93 Difference]: Finished difference Result 3144 states and 4509 transitions. [2022-11-19 08:29:39,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-19 08:29:39,400 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 19 states have (on average 4.368421052631579) internal successors, (83), 17 states have internal predecessors, (83), 11 states have call successors, (25), 6 states have call predecessors, (25), 5 states have return successors, (25), 10 states have call predecessors, (25), 11 states have call successors, (25) Word has length 209 [2022-11-19 08:29:39,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:29:39,409 INFO L225 Difference]: With dead ends: 3144 [2022-11-19 08:29:39,409 INFO L226 Difference]: Without dead ends: 1596 [2022-11-19 08:29:39,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 631 GetRequests, 586 SyntacticMatches, 7 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 358.6s TimeCoverageRelationStatistics Valid=181, Invalid=1379, Unknown=0, NotChecked=0, Total=1560 [2022-11-19 08:29:39,415 INFO L413 NwaCegarLoop]: 967 mSDtfsCounter, 5 mSDsluCounter, 18044 mSDsCounter, 0 mSdLazyCounter, 7965 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 80.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 19011 SdHoareTripleChecker+Invalid, 11033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7965 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 3067 IncrementalHoareTripleChecker+Unchecked, 85.5s IncrementalHoareTripleChecker+Time [2022-11-19 08:29:39,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 19011 Invalid, 11033 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 7965 Invalid, 1 Unknown, 3067 Unchecked, 85.5s Time] [2022-11-19 08:29:39,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1596 states. [2022-11-19 08:29:39,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1596 to 1596. [2022-11-19 08:29:39,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1596 states, 1003 states have (on average 1.353938185443669) internal successors, (1358), 1043 states have internal predecessors, (1358), 462 states have call successors, (462), 133 states have call predecessors, (462), 130 states have return successors, (464), 455 states have call predecessors, (464), 462 states have call successors, (464) [2022-11-19 08:29:39,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1596 states to 1596 states and 2284 transitions. [2022-11-19 08:29:39,673 INFO L78 Accepts]: Start accepts. Automaton has 1596 states and 2284 transitions. Word has length 209 [2022-11-19 08:29:39,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:29:39,674 INFO L495 AbstractCegarLoop]: Abstraction has 1596 states and 2284 transitions. [2022-11-19 08:29:39,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 19 states have (on average 4.368421052631579) internal successors, (83), 17 states have internal predecessors, (83), 11 states have call successors, (25), 6 states have call predecessors, (25), 5 states have return successors, (25), 10 states have call predecessors, (25), 11 states have call successors, (25) [2022-11-19 08:29:39,674 INFO L276 IsEmpty]: Start isEmpty. Operand 1596 states and 2284 transitions. [2022-11-19 08:29:39,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-11-19 08:29:39,684 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:29:39,684 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:29:39,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14493925-ec71-483e-bba0-f1f878316cf0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 08:29:39,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14493925-ec71-483e-bba0-f1f878316cf0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:29:39,905 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:29:39,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:29:39,906 INFO L85 PathProgramCache]: Analyzing trace with hash 789997778, now seen corresponding path program 1 times [2022-11-19 08:29:39,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:29:39,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411195638] [2022-11-19 08:29:39,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:29:39,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:29:40,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:29:40,461 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2022-11-19 08:29:40,461 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:29:40,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411195638] [2022-11-19 08:29:40,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411195638] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:29:40,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39492944] [2022-11-19 08:29:40,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:29:40,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:29:40,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14493925-ec71-483e-bba0-f1f878316cf0/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:29:40,464 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14493925-ec71-483e-bba0-f1f878316cf0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:29:40,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14493925-ec71-483e-bba0-f1f878316cf0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 08:29:41,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:29:41,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 1878 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 08:29:41,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:29:41,628 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2022-11-19 08:29:41,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:29:41,854 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2022-11-19 08:29:41,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39492944] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:29:41,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [221652143] [2022-11-19 08:29:41,859 INFO L159 IcfgInterpreter]: Started Sifa with 117 locations of interest [2022-11-19 08:29:41,859 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:29:41,859 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:29:41,860 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:29:41,860 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:29:42,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:29:42,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:29:42,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:29:42,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:29:42,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:29:42,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:29:42,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:29:42,621 INFO L217 Elim1Store]: Index analysis took 195 ms