./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--gpu--drm--ast--ast.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bc14f2d-a3af-4eca-a6b6-c6ead0da1373/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bc14f2d-a3af-4eca-a6b6-c6ead0da1373/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_2bc14f2d-a3af-4eca-a6b6-c6ead0da1373/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bc14f2d-a3af-4eca-a6b6-c6ead0da1373/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--gpu--drm--ast--ast.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bc14f2d-a3af-4eca-a6b6-c6ead0da1373/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_2bc14f2d-a3af-4eca-a6b6-c6ead0da1373/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 7e3ac2fcc053a51503ae18580c98d5f9812f019f35610d9038863980fd24a66a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 06:52:04,502 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:52:04,505 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:52:04,542 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:52:04,544 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:52:04,547 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:52:04,550 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:52:04,556 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:52:04,558 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:52:04,559 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:52:04,561 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:52:04,563 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:52:04,564 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:52:04,565 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:52:04,566 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:52:04,567 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:52:04,568 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:52:04,569 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:52:04,570 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:52:04,571 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:52:04,573 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:52:04,574 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:52:04,575 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:52:04,576 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:52:04,579 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:52:04,579 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:52:04,579 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:52:04,580 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:52:04,581 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:52:04,582 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:52:04,582 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:52:04,583 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:52:04,583 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:52:04,584 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:52:04,585 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:52:04,585 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:52:04,586 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:52:04,586 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:52:04,586 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:52:04,587 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:52:04,588 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:52:04,589 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bc14f2d-a3af-4eca-a6b6-c6ead0da1373/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 06:52:04,609 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:52:04,610 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:52:04,610 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:52:04,610 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:52:04,611 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:52:04,611 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:52:04,612 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:52:04,612 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:52:04,612 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:52:04,612 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:52:04,613 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:52:04,613 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:52:04,613 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:52:04,613 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:52:04,613 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:52:04,613 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:52:04,614 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:52:04,614 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:52:04,615 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:52:04,615 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:52:04,615 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:52:04,615 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:52:04,615 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:52:04,615 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:52:04,616 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:52:04,616 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:52:04,616 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:52:04,616 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:52:04,616 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:52:04,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:52:04,617 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:52:04,617 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:52:04,617 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:52:04,617 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:52:04,618 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:52:04,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:52:04,618 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:52:04,618 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:52:04,618 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_2bc14f2d-a3af-4eca-a6b6-c6ead0da1373/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bc14f2d-a3af-4eca-a6b6-c6ead0da1373/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e3ac2fcc053a51503ae18580c98d5f9812f019f35610d9038863980fd24a66a [2022-11-19 06:52:04,925 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:52:04,945 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:52:04,948 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:52:04,949 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:52:04,950 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:52:04,951 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bc14f2d-a3af-4eca-a6b6-c6ead0da1373/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--gpu--drm--ast--ast.ko-entry_point.cil.out.i [2022-11-19 06:52:05,018 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bc14f2d-a3af-4eca-a6b6-c6ead0da1373/bin/utaipan-I9t0OCRTmS/data/723ba93c8/6caef7190a6d4f5e829a0701c2d68290/FLAG8bf771a4b [2022-11-19 06:52:06,117 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:52:06,118 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bc14f2d-a3af-4eca-a6b6-c6ead0da1373/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--gpu--drm--ast--ast.ko-entry_point.cil.out.i [2022-11-19 06:52:06,201 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bc14f2d-a3af-4eca-a6b6-c6ead0da1373/bin/utaipan-I9t0OCRTmS/data/723ba93c8/6caef7190a6d4f5e829a0701c2d68290/FLAG8bf771a4b [2022-11-19 06:52:06,360 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bc14f2d-a3af-4eca-a6b6-c6ead0da1373/bin/utaipan-I9t0OCRTmS/data/723ba93c8/6caef7190a6d4f5e829a0701c2d68290 [2022-11-19 06:52:06,364 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:52:06,367 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:52:06,370 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:52:06,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:52:06,373 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:52:06,375 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:52:06" (1/1) ... [2022-11-19 06:52:06,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5315b58a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:06, skipping insertion in model container [2022-11-19 06:52:06,376 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:52:06" (1/1) ... [2022-11-19 06:52:06,383 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:52:06,616 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:52:11,021 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_2bc14f2d-a3af-4eca-a6b6-c6ead0da1373/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--gpu--drm--ast--ast.ko-entry_point.cil.out.i[423705,423718] [2022-11-19 06:52:11,444 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:52:11,518 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:52:12,088 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_2bc14f2d-a3af-4eca-a6b6-c6ead0da1373/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--gpu--drm--ast--ast.ko-entry_point.cil.out.i[423705,423718] [2022-11-19 06:52:12,117 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:52:12,529 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:52:12,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:12 WrapperNode [2022-11-19 06:52:12,530 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:52:12,531 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:52:12,531 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:52:12,531 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:52:12,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:12" (1/1) ... [2022-11-19 06:52:12,708 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:12" (1/1) ... [2022-11-19 06:52:13,138 INFO L138 Inliner]: procedures = 649, calls = 4702, calls flagged for inlining = 324, calls inlined = 315, statements flattened = 12139 [2022-11-19 06:52:13,139 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:52:13,140 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:52:13,140 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:52:13,140 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:52:13,154 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:12" (1/1) ... [2022-11-19 06:52:13,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:12" (1/1) ... [2022-11-19 06:52:13,213 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:12" (1/1) ... [2022-11-19 06:52:13,214 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:12" (1/1) ... [2022-11-19 06:52:13,405 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:12" (1/1) ... [2022-11-19 06:52:13,457 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:12" (1/1) ... [2022-11-19 06:52:13,521 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:12" (1/1) ... [2022-11-19 06:52:13,555 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:12" (1/1) ... [2022-11-19 06:52:13,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:52:13,628 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:52:13,628 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:52:13,628 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:52:13,629 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:12" (1/1) ... [2022-11-19 06:52:13,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:52:13,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bc14f2d-a3af-4eca-a6b6-c6ead0da1373/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:52:13,661 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bc14f2d-a3af-4eca-a6b6-c6ead0da1373/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:52:13,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bc14f2d-a3af-4eca-a6b6-c6ead0da1373/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:52:13,774 INFO L130 BoogieDeclarations]: Found specification of procedure drm_global_item_ref [2022-11-19 06:52:13,774 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_global_item_ref [2022-11-19 06:52:13,775 INFO L130 BoogieDeclarations]: Found specification of procedure wait_nack [2022-11-19 06:52:13,775 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_nack [2022-11-19 06:52:13,775 INFO L130 BoogieDeclarations]: Found specification of procedure wait_ack [2022-11-19 06:52:13,775 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_ack [2022-11-19 06:52:13,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-19 06:52:13,775 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-19 06:52:13,775 INFO L130 BoogieDeclarations]: Found specification of procedure clear_cmd_trigger [2022-11-19 06:52:13,775 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_cmd_trigger [2022-11-19 06:52:13,776 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 06:52:13,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 06:52:13,776 INFO L130 BoogieDeclarations]: Found specification of procedure ast_init_dvo [2022-11-19 06:52:13,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_init_dvo [2022-11-19 06:52:13,776 INFO L130 BoogieDeclarations]: Found specification of procedure ast_drm_freeze [2022-11-19 06:52:13,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_drm_freeze [2022-11-19 06:52:13,776 INFO L130 BoogieDeclarations]: Found specification of procedure drm_helper_probe_single_connector_modes [2022-11-19 06:52:13,776 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_helper_probe_single_connector_modes [2022-11-19 06:52:13,776 INFO L130 BoogieDeclarations]: Found specification of procedure lock_release [2022-11-19 06:52:13,777 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_release [2022-11-19 06:52:13,777 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-19 06:52:13,777 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-19 06:52:13,777 INFO L130 BoogieDeclarations]: Found specification of procedure __ww_mutex_lock [2022-11-19 06:52:13,777 INFO L138 BoogieDeclarations]: Found implementation of procedure __ww_mutex_lock [2022-11-19 06:52:13,777 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_base_of_ww_mutex [2022-11-19 06:52:13,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_base_of_ww_mutex [2022-11-19 06:52:13,777 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_dpms [2022-11-19 06:52:13,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_dpms [2022-11-19 06:52:13,778 INFO L130 BoogieDeclarations]: Found specification of procedure ast_set_dp501_video_output [2022-11-19 06:52:13,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_set_dp501_video_output [2022-11-19 06:52:13,778 INFO L130 BoogieDeclarations]: Found specification of procedure ast_bo_pin [2022-11-19 06:52:13,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_bo_pin [2022-11-19 06:52:13,778 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_struct_mutex_of_drm_device [2022-11-19 06:52:13,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_struct_mutex_of_drm_device [2022-11-19 06:52:13,778 INFO L130 BoogieDeclarations]: Found specification of procedure ast_read32 [2022-11-19 06:52:13,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_read32 [2022-11-19 06:52:13,779 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-19 06:52:13,779 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-19 06:52:13,779 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-19 06:52:13,779 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-19 06:52:13,779 INFO L130 BoogieDeclarations]: Found specification of procedure cbr_dll2 [2022-11-19 06:52:13,787 INFO L138 BoogieDeclarations]: Found implementation of procedure cbr_dll2 [2022-11-19 06:52:13,788 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_mode_fixup [2022-11-19 06:52:13,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_mode_fixup [2022-11-19 06:52:13,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 06:52:13,788 INFO L130 BoogieDeclarations]: Found specification of procedure ast_drm_thaw [2022-11-19 06:52:13,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_drm_thaw [2022-11-19 06:52:13,789 INFO L130 BoogieDeclarations]: Found specification of procedure ast_dirty_update [2022-11-19 06:52:13,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_dirty_update [2022-11-19 06:52:13,789 INFO L130 BoogieDeclarations]: Found specification of procedure ast_enable_vga [2022-11-19 06:52:13,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_enable_vga [2022-11-19 06:52:13,789 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-19 06:52:13,790 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-19 06:52:13,790 INFO L130 BoogieDeclarations]: Found specification of procedure ast_set_index_reg_mask [2022-11-19 06:52:13,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_set_index_reg_mask [2022-11-19 06:52:13,790 INFO L130 BoogieDeclarations]: Found specification of procedure drm_fb_helper_fini [2022-11-19 06:52:13,790 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_fb_helper_fini [2022-11-19 06:52:13,791 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_bo_kmap [2022-11-19 06:52:13,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_bo_kmap [2022-11-19 06:52:13,791 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_bo_del_sub_from_lru [2022-11-19 06:52:13,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_bo_del_sub_from_lru [2022-11-19 06:52:13,791 INFO L130 BoogieDeclarations]: Found specification of procedure ast_ttm_placement [2022-11-19 06:52:13,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_ttm_placement [2022-11-19 06:52:13,791 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_load_lut [2022-11-19 06:52:13,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_load_lut [2022-11-19 06:52:13,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-19 06:52:13,792 INFO L130 BoogieDeclarations]: Found specification of procedure ast_mindwm [2022-11-19 06:52:13,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_mindwm [2022-11-19 06:52:13,792 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_bo_kunmap [2022-11-19 06:52:13,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_bo_kunmap [2022-11-19 06:52:13,792 INFO L130 BoogieDeclarations]: Found specification of procedure drm_global_item_unref [2022-11-19 06:52:13,792 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_global_item_unref [2022-11-19 06:52:13,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-19 06:52:13,793 INFO L130 BoogieDeclarations]: Found specification of procedure ast_user_framebuffer_destroy [2022-11-19 06:52:13,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_user_framebuffer_destroy [2022-11-19 06:52:13,793 INFO L130 BoogieDeclarations]: Found specification of procedure send_ack [2022-11-19 06:52:13,793 INFO L138 BoogieDeclarations]: Found implementation of procedure send_ack [2022-11-19 06:52:13,793 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_disable [2022-11-19 06:52:13,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_disable [2022-11-19 06:52:13,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 06:52:13,793 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_mode_set_base [2022-11-19 06:52:13,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_mode_set_base [2022-11-19 06:52:13,794 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iomap [2022-11-19 06:52:13,794 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iomap [2022-11-19 06:52:13,794 INFO L130 BoogieDeclarations]: Found specification of procedure get_fw_base [2022-11-19 06:52:13,794 INFO L138 BoogieDeclarations]: Found implementation of procedure get_fw_base [2022-11-19 06:52:13,794 INFO L130 BoogieDeclarations]: Found specification of procedure ast_io_read8 [2022-11-19 06:52:13,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_io_read8 [2022-11-19 06:52:13,794 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-19 06:52:13,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-19 06:52:13,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 06:52:13,795 INFO L130 BoogieDeclarations]: Found specification of procedure ast_post_gpu [2022-11-19 06:52:13,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_post_gpu [2022-11-19 06:52:13,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:52:13,795 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_gamma_set [2022-11-19 06:52:13,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_gamma_set [2022-11-19 06:52:13,795 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_base_of_ww_mutex [2022-11-19 06:52:13,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_base_of_ww_mutex [2022-11-19 06:52:13,796 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-19 06:52:13,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-19 06:52:13,796 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-19 06:52:13,796 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-19 06:52:13,796 INFO L130 BoogieDeclarations]: Found specification of procedure ast_fbdev_set_suspend [2022-11-19 06:52:13,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_fbdev_set_suspend [2022-11-19 06:52:13,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 06:52:13,797 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-19 06:52:13,797 INFO L130 BoogieDeclarations]: Found specification of procedure ast_framebuffer_init [2022-11-19 06:52:13,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_framebuffer_init [2022-11-19 06:52:13,797 INFO L130 BoogieDeclarations]: Found specification of procedure ast_cursor_set [2022-11-19 06:52:13,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_cursor_set [2022-11-19 06:52:13,797 INFO L130 BoogieDeclarations]: Found specification of procedure ast_open_key [2022-11-19 06:52:13,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_open_key [2022-11-19 06:52:13,797 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_bo_validate [2022-11-19 06:52:13,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_bo_validate [2022-11-19 06:52:13,798 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_test_burst2 [2022-11-19 06:52:13,798 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_test_burst2 [2022-11-19 06:52:13,798 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-19 06:52:13,798 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-19 06:52:13,798 INFO L130 BoogieDeclarations]: Found specification of procedure ast_bo_unreserve [2022-11-19 06:52:13,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_bo_unreserve [2022-11-19 06:52:13,799 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-19 06:52:13,799 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-19 06:52:13,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:52:13,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:52:13,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-19 06:52:13,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-19 06:52:13,799 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 06:52:13,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 06:52:13,800 INFO L130 BoogieDeclarations]: Found specification of procedure send_nack [2022-11-19 06:52:13,800 INFO L138 BoogieDeclarations]: Found implementation of procedure send_nack [2022-11-19 06:52:13,800 INFO L130 BoogieDeclarations]: Found specification of procedure ast_enable_mmio [2022-11-19 06:52:13,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_enable_mmio [2022-11-19 06:52:13,800 INFO L130 BoogieDeclarations]: Found specification of procedure ast_connector_detect [2022-11-19 06:52:13,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_connector_detect [2022-11-19 06:52:13,800 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-11-19 06:52:13,800 INFO L130 BoogieDeclarations]: Found specification of procedure ast_encoder_prepare [2022-11-19 06:52:13,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_encoder_prepare [2022-11-19 06:52:13,801 INFO L130 BoogieDeclarations]: Found specification of procedure ast_get_index_reg_mask [2022-11-19 06:52:13,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_get_index_reg_mask [2022-11-19 06:52:13,801 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_base_of_ww_mutex [2022-11-19 06:52:13,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_base_of_ww_mutex [2022-11-19 06:52:13,801 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_trylock [2022-11-19 06:52:13,801 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_trylock [2022-11-19 06:52:13,801 INFO L130 BoogieDeclarations]: Found specification of procedure ast_gem_create [2022-11-19 06:52:13,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_gem_create [2022-11-19 06:52:13,801 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_prepare [2022-11-19 06:52:13,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_prepare [2022-11-19 06:52:13,802 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-19 06:52:13,802 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-19 06:52:13,802 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-19 06:52:13,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-19 06:52:13,802 INFO L130 BoogieDeclarations]: Found specification of procedure ast_bo_reserve [2022-11-19 06:52:13,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_bo_reserve [2022-11-19 06:52:13,802 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-19 06:52:13,802 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-19 06:52:13,802 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 06:52:13,803 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 06:52:13,803 INFO L130 BoogieDeclarations]: Found specification of procedure drm_gem_object_unreference_unlocked [2022-11-19 06:52:13,803 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_gem_object_unreference_unlocked [2022-11-19 06:52:13,803 INFO L130 BoogieDeclarations]: Found specification of procedure ast_mmap [2022-11-19 06:52:13,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_mmap [2022-11-19 06:52:13,803 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-19 06:52:13,803 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-19 06:52:13,803 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-11-19 06:52:13,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-11-19 06:52:13,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 06:52:13,804 INFO L130 BoogieDeclarations]: Found specification of procedure drm_gem_object_free [2022-11-19 06:52:13,804 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_gem_object_free [2022-11-19 06:52:13,804 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put_mutex_54 [2022-11-19 06:52:13,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put_mutex_54 [2022-11-19 06:52:13,804 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_bo_global_release [2022-11-19 06:52:13,804 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_struct_mutex_of_drm_device [2022-11-19 06:52:13,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_struct_mutex_of_drm_device [2022-11-19 06:52:13,805 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 06:52:13,805 INFO L130 BoogieDeclarations]: Found specification of procedure __ww_mutex_lock_interruptible [2022-11-19 06:52:13,805 INFO L138 BoogieDeclarations]: Found implementation of procedure __ww_mutex_lock_interruptible [2022-11-19 06:52:13,805 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2022-11-19 06:52:13,805 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2022-11-19 06:52:13,805 INFO L130 BoogieDeclarations]: Found specification of procedure ast_connector_destroy [2022-11-19 06:52:13,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_connector_destroy [2022-11-19 06:52:13,806 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_commit [2022-11-19 06:52:13,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_commit [2022-11-19 06:52:13,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 06:52:13,806 INFO L130 BoogieDeclarations]: Found specification of procedure ast_pm_resume [2022-11-19 06:52:13,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_pm_resume [2022-11-19 06:52:13,806 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-19 06:52:13,806 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-19 06:52:13,807 INFO L130 BoogieDeclarations]: Found specification of procedure ast_io_write8 [2022-11-19 06:52:13,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_io_write8 [2022-11-19 06:52:13,807 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_kmap_obj_virtual [2022-11-19 06:52:13,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_kmap_obj_virtual [2022-11-19 06:52:13,807 INFO L130 BoogieDeclarations]: Found specification of procedure ast_encoder_destroy [2022-11-19 06:52:13,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_encoder_destroy [2022-11-19 06:52:13,807 INFO L130 BoogieDeclarations]: Found specification of procedure ast_bo_gpu_offset [2022-11-19 06:52:13,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_bo_gpu_offset [2022-11-19 06:52:13,808 INFO L130 BoogieDeclarations]: Found specification of procedure ast_write32 [2022-11-19 06:52:13,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_write32 [2022-11-19 06:52:13,808 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_reset [2022-11-19 06:52:13,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_reset [2022-11-19 06:52:13,808 INFO L130 BoogieDeclarations]: Found specification of procedure ast_gem_free_object [2022-11-19 06:52:13,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_gem_free_object [2022-11-19 06:52:13,808 INFO L130 BoogieDeclarations]: Found specification of procedure drm_gem_object_unreference_unlocked___0 [2022-11-19 06:52:13,808 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_gem_object_unreference_unlocked___0 [2022-11-19 06:52:13,809 INFO L130 BoogieDeclarations]: Found specification of procedure ast_ttm_backend_destroy [2022-11-19 06:52:13,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_ttm_backend_destroy [2022-11-19 06:52:13,809 INFO L130 BoogieDeclarations]: Found specification of procedure ast_pci_remove [2022-11-19 06:52:13,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_pci_remove [2022-11-19 06:52:13,809 INFO L130 BoogieDeclarations]: Found specification of procedure drm_helper_connector_dpms [2022-11-19 06:52:13,809 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_helper_connector_dpms [2022-11-19 06:52:13,809 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_mode_set [2022-11-19 06:52:13,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_mode_set [2022-11-19 06:52:13,810 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_test_single2 [2022-11-19 06:52:13,810 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_test_single2 [2022-11-19 06:52:13,810 INFO L130 BoogieDeclarations]: Found specification of procedure ast_bo [2022-11-19 06:52:13,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_bo [2022-11-19 06:52:13,810 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-19 06:52:13,810 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-19 06:52:13,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 06:52:13,811 INFO L130 BoogieDeclarations]: Found specification of procedure ast_moutdwm [2022-11-19 06:52:13,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_moutdwm [2022-11-19 06:52:13,811 INFO L130 BoogieDeclarations]: Found specification of procedure ast_set_index_reg [2022-11-19 06:52:13,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_set_index_reg [2022-11-19 06:52:13,811 INFO L130 BoogieDeclarations]: Found specification of procedure cbrdlli_ast2150 [2022-11-19 06:52:13,811 INFO L138 BoogieDeclarations]: Found implementation of procedure cbrdlli_ast2150 [2022-11-19 06:52:13,811 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 06:52:13,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 06:52:13,812 INFO L130 BoogieDeclarations]: Found specification of procedure drm_framebuffer_cleanup [2022-11-19 06:52:13,812 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_framebuffer_cleanup [2022-11-19 06:52:13,812 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-19 06:52:13,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-19 06:52:13,812 INFO L130 BoogieDeclarations]: Found specification of procedure ast_encoder_commit [2022-11-19 06:52:13,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_encoder_commit [2022-11-19 06:52:13,812 INFO L130 BoogieDeclarations]: Found specification of procedure lock_acquire [2022-11-19 06:52:13,812 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_acquire [2022-11-19 06:52:13,813 INFO L130 BoogieDeclarations]: Found specification of procedure drm_crtc_helper_set_config [2022-11-19 06:52:13,813 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_crtc_helper_set_config [2022-11-19 06:52:13,813 INFO L130 BoogieDeclarations]: Found specification of procedure console_lock [2022-11-19 06:52:13,813 INFO L138 BoogieDeclarations]: Found implementation of procedure console_lock [2022-11-19 06:52:13,813 INFO L130 BoogieDeclarations]: Found specification of procedure ast_cursor_move [2022-11-19 06:52:13,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_cursor_move [2022-11-19 06:52:13,813 INFO L130 BoogieDeclarations]: Found specification of procedure console_unlock [2022-11-19 06:52:13,814 INFO L138 BoogieDeclarations]: Found implementation of procedure console_unlock [2022-11-19 06:52:13,814 INFO L130 BoogieDeclarations]: Found specification of procedure drm_poll [2022-11-19 06:52:13,814 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_poll [2022-11-19 06:52:13,814 INFO L130 BoogieDeclarations]: Found specification of procedure drm_mode_connector_update_edid_property [2022-11-19 06:52:13,814 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_mode_connector_update_edid_property [2022-11-19 06:52:13,814 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-19 06:52:13,814 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-19 06:52:13,814 INFO L130 BoogieDeclarations]: Found specification of procedure ast_ttm_tt_unpopulate [2022-11-19 06:52:13,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_ttm_tt_unpopulate [2022-11-19 06:52:13,815 INFO L130 BoogieDeclarations]: Found specification of procedure drm_gem_object_lookup [2022-11-19 06:52:13,815 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_gem_object_lookup [2022-11-19 06:52:13,815 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_destroy [2022-11-19 06:52:13,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_destroy [2022-11-19 06:52:13,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 06:52:15,033 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:52:15,041 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:52:15,296 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 06:52:34,531 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:52:39,954 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:52:39,954 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 06:52:39,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:52:39 BoogieIcfgContainer [2022-11-19 06:52:39,961 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:52:39,964 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:52:39,964 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:52:39,967 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:52:39,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:52:06" (1/3) ... [2022-11-19 06:52:39,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5053e7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:52:39, skipping insertion in model container [2022-11-19 06:52:39,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:12" (2/3) ... [2022-11-19 06:52:39,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5053e7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:52:39, skipping insertion in model container [2022-11-19 06:52:39,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:52:39" (3/3) ... [2022-11-19 06:52:39,970 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--gpu--drm--ast--ast.ko-entry_point.cil.out.i [2022-11-19 06:52:39,988 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:52:39,989 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 06:52:40,106 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:52:40,113 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;@289caf97, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:52:40,113 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 06:52:40,125 INFO L276 IsEmpty]: Start isEmpty. Operand has 2519 states, 1509 states have (on average 1.4035785288270377) internal successors, (2118), 1600 states have internal predecessors, (2118), 891 states have call successors, (891), 118 states have call predecessors, (891), 117 states have return successors, (873), 850 states have call predecessors, (873), 873 states have call successors, (873) [2022-11-19 06:52:40,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-11-19 06:52:40,139 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:40,140 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:52:40,141 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:52:40,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:40,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1723916303, now seen corresponding path program 1 times [2022-11-19 06:52:40,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:52:40,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879127512] [2022-11-19 06:52:40,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:40,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:52:40,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:41,544 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2022-11-19 06:52:41,545 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:52:41,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879127512] [2022-11-19 06:52:41,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879127512] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:52:41,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:52:41,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:52:41,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728971791] [2022-11-19 06:52:41,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:52:41,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:52:41,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:52:41,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:52:41,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:52:41,606 INFO L87 Difference]: Start difference. First operand has 2519 states, 1509 states have (on average 1.4035785288270377) internal successors, (2118), 1600 states have internal predecessors, (2118), 891 states have call successors, (891), 118 states have call predecessors, (891), 117 states have return successors, (873), 850 states have call predecessors, (873), 873 states have call successors, (873) Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2022-11-19 06:52:45,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:52:48,471 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:52:50,484 WARN L539 Checker$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 06:52:52,498 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:52:54,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:52:56,088 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:52:58,102 WARN L539 Checker$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 06:53:02,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:53:03,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:53:03,721 INFO L93 Difference]: Finished difference Result 7425 states and 11529 transitions. [2022-11-19 06:53:03,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:53:03,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 162 [2022-11-19 06:53:03,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:53:03,778 INFO L225 Difference]: With dead ends: 7425 [2022-11-19 06:53:03,779 INFO L226 Difference]: Without dead ends: 4899 [2022-11-19 06:53:03,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:53:03,802 INFO L413 NwaCegarLoop]: 4259 mSDtfsCounter, 3712 mSDsluCounter, 3423 mSDsCounter, 0 mSdLazyCounter, 875 mSolverCounterSat, 3 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3714 SdHoareTripleChecker+Valid, 7682 SdHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 875 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.6s IncrementalHoareTripleChecker+Time [2022-11-19 06:53:03,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3714 Valid, 7682 Invalid, 883 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 875 Invalid, 5 Unknown, 0 Unchecked, 21.6s Time] [2022-11-19 06:53:03,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4899 states. [2022-11-19 06:53:04,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4899 to 4887. [2022-11-19 06:53:04,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4887 states, 2958 states have (on average 1.3935091277890466) internal successors, (4122), 3094 states have internal predecessors, (4122), 1696 states have call successors, (1696), 233 states have call predecessors, (1696), 232 states have return successors, (1686), 1633 states have call predecessors, (1686), 1684 states have call successors, (1686) [2022-11-19 06:53:04,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4887 states to 4887 states and 7504 transitions. [2022-11-19 06:53:04,365 INFO L78 Accepts]: Start accepts. Automaton has 4887 states and 7504 transitions. Word has length 162 [2022-11-19 06:53:04,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:53:04,369 INFO L495 AbstractCegarLoop]: Abstraction has 4887 states and 7504 transitions. [2022-11-19 06:53:04,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2022-11-19 06:53:04,370 INFO L276 IsEmpty]: Start isEmpty. Operand 4887 states and 7504 transitions. [2022-11-19 06:53:04,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-11-19 06:53:04,386 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:53:04,386 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:53:04,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 06:53:04,387 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:53:04,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:53:04,388 INFO L85 PathProgramCache]: Analyzing trace with hash -543740118, now seen corresponding path program 1 times [2022-11-19 06:53:04,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:53:04,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709756377] [2022-11-19 06:53:04,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:53:04,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:53:04,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:53:05,217 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2022-11-19 06:53:05,217 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:53:05,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709756377] [2022-11-19 06:53:05,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709756377] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:53:05,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:53:05,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:53:05,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076928946] [2022-11-19 06:53:05,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:53:05,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:53:05,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:53:05,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:53:05,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:53:05,222 INFO L87 Difference]: Start difference. First operand 4887 states and 7504 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-19 06:53:10,003 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 06:53:14,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:53:16,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:53:18,433 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:53:20,443 WARN L539 Checker$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 06:53:21,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:53:25,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:53:27,072 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 06:53:27,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:53:27,976 INFO L93 Difference]: Finished difference Result 9649 states and 14870 transitions. [2022-11-19 06:53:27,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:53:27,977 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 165 [2022-11-19 06:53:27,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:53:28,059 INFO L225 Difference]: With dead ends: 9649 [2022-11-19 06:53:28,060 INFO L226 Difference]: Without dead ends: 9643 [2022-11-19 06:53:28,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:53:28,073 INFO L413 NwaCegarLoop]: 4339 mSDtfsCounter, 3713 mSDsluCounter, 3334 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 7 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3715 SdHoareTripleChecker+Valid, 7673 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.3s IncrementalHoareTripleChecker+Time [2022-11-19 06:53:28,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3715 Valid, 7673 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 898 Invalid, 5 Unknown, 0 Unchecked, 22.3s Time] [2022-11-19 06:53:28,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9643 states. [2022-11-19 06:53:28,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9643 to 9626. [2022-11-19 06:53:28,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9626 states, 5836 states have (on average 1.395476353666895) internal successors, (8144), 6106 states have internal predecessors, (8144), 3333 states have call successors, (3333), 463 states have call predecessors, (3333), 456 states have return successors, (3361), 3204 states have call predecessors, (3361), 3321 states have call successors, (3361) [2022-11-19 06:53:28,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9626 states to 9626 states and 14838 transitions. [2022-11-19 06:53:28,991 INFO L78 Accepts]: Start accepts. Automaton has 9626 states and 14838 transitions. Word has length 165 [2022-11-19 06:53:28,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:53:28,992 INFO L495 AbstractCegarLoop]: Abstraction has 9626 states and 14838 transitions. [2022-11-19 06:53:28,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-19 06:53:28,993 INFO L276 IsEmpty]: Start isEmpty. Operand 9626 states and 14838 transitions. [2022-11-19 06:53:28,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-11-19 06:53:28,997 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:53:28,997 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:53:28,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 06:53:28,998 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:53:28,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:53:28,999 INFO L85 PathProgramCache]: Analyzing trace with hash 322571687, now seen corresponding path program 1 times [2022-11-19 06:53:28,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:53:28,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798172153] [2022-11-19 06:53:28,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:53:29,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:53:29,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:53:29,771 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2022-11-19 06:53:29,772 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:53:29,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798172153] [2022-11-19 06:53:29,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798172153] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:53:29,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:53:29,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:53:29,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998733006] [2022-11-19 06:53:29,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:53:29,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:53:29,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:53:29,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:53:29,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:53:29,776 INFO L87 Difference]: Start difference. First operand 9626 states and 14838 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-19 06:53:34,033 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 06:53:37,313 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:53:39,031 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:53:41,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:53:43,064 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:53:45,077 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 06:53:46,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:53:46,672 INFO L93 Difference]: Finished difference Result 11945 states and 18434 transitions. [2022-11-19 06:53:46,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:53:46,673 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), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 166 [2022-11-19 06:53:46,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:53:46,761 INFO L225 Difference]: With dead ends: 11945 [2022-11-19 06:53:46,762 INFO L226 Difference]: Without dead ends: 11942 [2022-11-19 06:53:46,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:53:46,773 INFO L413 NwaCegarLoop]: 3733 mSDtfsCounter, 3737 mSDsluCounter, 1106 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3742 SdHoareTripleChecker+Valid, 4839 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.3s IncrementalHoareTripleChecker+Time [2022-11-19 06:53:46,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3742 Valid, 4839 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 579 Invalid, 4 Unknown, 0 Unchecked, 16.3s Time] [2022-11-19 06:53:46,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11942 states. [2022-11-19 06:53:47,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11942 to 11899. [2022-11-19 06:53:47,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11899 states, 7041 states have (on average 1.3833262320693083) internal successors, (9740), 7376 states have internal predecessors, (9740), 4299 states have call successors, (4299), 565 states have call predecessors, (4299), 558 states have return successors, (4328), 4141 states have call predecessors, (4328), 4288 states have call successors, (4328) [2022-11-19 06:53:47,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11899 states to 11899 states and 18367 transitions. [2022-11-19 06:53:47,784 INFO L78 Accepts]: Start accepts. Automaton has 11899 states and 18367 transitions. Word has length 166 [2022-11-19 06:53:47,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:53:47,786 INFO L495 AbstractCegarLoop]: Abstraction has 11899 states and 18367 transitions. [2022-11-19 06:53:47,786 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), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-19 06:53:47,786 INFO L276 IsEmpty]: Start isEmpty. Operand 11899 states and 18367 transitions. [2022-11-19 06:53:47,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-19 06:53:47,791 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:53:47,792 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:53:47,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 06:53:47,792 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:53:47,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:53:47,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1408438733, now seen corresponding path program 1 times [2022-11-19 06:53:47,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:53:47,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795125562] [2022-11-19 06:53:47,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:53:47,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:53:48,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:53:48,466 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2022-11-19 06:53:48,467 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:53:48,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795125562] [2022-11-19 06:53:48,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795125562] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:53:48,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:53:48,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:53:48,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282910723] [2022-11-19 06:53:48,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:53:48,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:53:48,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:53:48,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:53:48,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:53:48,470 INFO L87 Difference]: Start difference. First operand 11899 states and 18367 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-19 06:53:49,992 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:53:52,164 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:53:54,285 WARN L539 Checker$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 06:53:58,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:54:00,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:54:02,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:54:04,731 WARN L539 Checker$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 06:54:06,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:54:06,110 INFO L93 Difference]: Finished difference Result 13199 states and 20418 transitions. [2022-11-19 06:54:06,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:54:06,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 167 [2022-11-19 06:54:06,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:54:06,203 INFO L225 Difference]: With dead ends: 13199 [2022-11-19 06:54:06,203 INFO L226 Difference]: Without dead ends: 13196 [2022-11-19 06:54:06,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:54:06,219 INFO L413 NwaCegarLoop]: 3726 mSDtfsCounter, 3733 mSDsluCounter, 1106 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 0 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3738 SdHoareTripleChecker+Valid, 4832 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:54:06,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3738 Valid, 4832 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 577 Invalid, 5 Unknown, 0 Unchecked, 17.2s Time] [2022-11-19 06:54:06,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13196 states. [2022-11-19 06:54:07,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13196 to 13169. [2022-11-19 06:54:07,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13169 states, 7726 states have (on average 1.3798860988868755) internal successors, (10661), 8090 states have internal predecessors, (10661), 4840 states have call successors, (4840), 607 states have call predecessors, (4840), 602 states have return successors, (4876), 4675 states have call predecessors, (4876), 4830 states have call successors, (4876) [2022-11-19 06:54:07,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13169 states to 13169 states and 20377 transitions. [2022-11-19 06:54:07,429 INFO L78 Accepts]: Start accepts. Automaton has 13169 states and 20377 transitions. Word has length 167 [2022-11-19 06:54:07,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:54:07,430 INFO L495 AbstractCegarLoop]: Abstraction has 13169 states and 20377 transitions. [2022-11-19 06:54:07,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-19 06:54:07,431 INFO L276 IsEmpty]: Start isEmpty. Operand 13169 states and 20377 transitions. [2022-11-19 06:54:07,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-11-19 06:54:07,435 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:54:07,435 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:54:07,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 06:54:07,435 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:54:07,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:54:07,436 INFO L85 PathProgramCache]: Analyzing trace with hash -314640644, now seen corresponding path program 1 times [2022-11-19 06:54:07,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:54:07,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744291280] [2022-11-19 06:54:07,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:54:07,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:54:07,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:54:07,941 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2022-11-19 06:54:07,941 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:54:07,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744291280] [2022-11-19 06:54:07,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744291280] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:54:07,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:54:07,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:54:07,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063388907] [2022-11-19 06:54:07,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:54:07,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:54:07,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:54:07,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:54:07,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:54:07,947 INFO L87 Difference]: Start difference. First operand 13169 states and 20377 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2022-11-19 06:54:11,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:54:13,579 WARN L539 Checker$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 06:54:15,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:54:17,604 WARN L539 Checker$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 06:54:18,894 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:54:20,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:54:26,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:54:28,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:54:29,489 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:54:31,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:54:32,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:54:32,754 INFO L93 Difference]: Finished difference Result 38115 states and 58897 transitions. [2022-11-19 06:54:32,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:54:32,755 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 168 [2022-11-19 06:54:32,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:54:32,915 INFO L225 Difference]: With dead ends: 38115 [2022-11-19 06:54:32,916 INFO L226 Difference]: Without dead ends: 24981 [2022-11-19 06:54:33,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:54:33,018 INFO L413 NwaCegarLoop]: 4124 mSDtfsCounter, 3313 mSDsluCounter, 3322 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3314 SdHoareTripleChecker+Valid, 7446 SdHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.4s IncrementalHoareTripleChecker+Time [2022-11-19 06:54:33,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3314 Valid, 7446 Invalid, 885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 878 Invalid, 5 Unknown, 0 Unchecked, 23.4s Time] [2022-11-19 06:54:33,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24981 states. [2022-11-19 06:54:35,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24981 to 24953. [2022-11-19 06:54:35,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24953 states, 14606 states have (on average 1.3775160892783787) internal successors, (20120), 15245 states have internal predecessors, (20120), 9168 states have call successors, (9168), 1187 states have call predecessors, (9168), 1178 states have return successors, (9249), 8902 states have call predecessors, (9249), 9158 states have call successors, (9249) [2022-11-19 06:54:35,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24953 states to 24953 states and 38537 transitions. [2022-11-19 06:54:35,545 INFO L78 Accepts]: Start accepts. Automaton has 24953 states and 38537 transitions. Word has length 168 [2022-11-19 06:54:35,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:54:35,546 INFO L495 AbstractCegarLoop]: Abstraction has 24953 states and 38537 transitions. [2022-11-19 06:54:35,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2022-11-19 06:54:35,547 INFO L276 IsEmpty]: Start isEmpty. Operand 24953 states and 38537 transitions. [2022-11-19 06:54:35,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-11-19 06:54:35,550 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:54:35,550 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:54:35,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 06:54:35,550 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:54:35,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:54:35,551 INFO L85 PathProgramCache]: Analyzing trace with hash 710583658, now seen corresponding path program 1 times [2022-11-19 06:54:35,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:54:35,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405323790] [2022-11-19 06:54:35,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:54:35,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:54:35,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:54:36,123 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2022-11-19 06:54:36,123 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:54:36,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405323790] [2022-11-19 06:54:36,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405323790] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:54:36,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:54:36,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:54:36,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831404264] [2022-11-19 06:54:36,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:54:36,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:54:36,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:54:36,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:54:36,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:54:36,127 INFO L87 Difference]: Start difference. First operand 24953 states and 38537 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-19 06:54:40,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:54:42,792 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:54:45,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:54:47,606 WARN L539 Checker$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 06:54:50,740 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:54:52,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:54:52,514 INFO L93 Difference]: Finished difference Result 25003 states and 38603 transitions. [2022-11-19 06:54:52,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:54:52,515 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 168 [2022-11-19 06:54:52,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:54:52,697 INFO L225 Difference]: With dead ends: 25003 [2022-11-19 06:54:52,697 INFO L226 Difference]: Without dead ends: 25000 [2022-11-19 06:54:52,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:54:52,723 INFO L413 NwaCegarLoop]: 3635 mSDtfsCounter, 3767 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3769 SdHoareTripleChecker+Valid, 4407 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:54:52,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3769 Valid, 4407 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 527 Invalid, 3 Unknown, 0 Unchecked, 15.2s Time] [2022-11-19 06:54:52,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25000 states. [2022-11-19 06:54:54,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25000 to 24976. [2022-11-19 06:54:55,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24976 states, 14627 states have (on average 1.376905722294387) internal successors, (20140), 15256 states have internal predecessors, (20140), 9167 states have call successors, (9167), 1187 states have call predecessors, (9167), 1181 states have return successors, (9258), 8917 states have call predecessors, (9258), 9158 states have call successors, (9258) [2022-11-19 06:54:55,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24976 states to 24976 states and 38565 transitions. [2022-11-19 06:54:55,425 INFO L78 Accepts]: Start accepts. Automaton has 24976 states and 38565 transitions. Word has length 168 [2022-11-19 06:54:55,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:54:55,426 INFO L495 AbstractCegarLoop]: Abstraction has 24976 states and 38565 transitions. [2022-11-19 06:54:55,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-19 06:54:55,426 INFO L276 IsEmpty]: Start isEmpty. Operand 24976 states and 38565 transitions. [2022-11-19 06:54:55,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-11-19 06:54:55,429 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:54:55,429 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:54:55,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 06:54:55,429 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:54:55,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:54:55,430 INFO L85 PathProgramCache]: Analyzing trace with hash 551917680, now seen corresponding path program 1 times [2022-11-19 06:54:55,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:54:55,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110044273] [2022-11-19 06:54:55,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:54:55,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:54:55,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:54:56,202 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2022-11-19 06:54:56,203 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:54:56,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110044273] [2022-11-19 06:54:56,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110044273] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:54:56,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:54:56,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:54:56,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285876134] [2022-11-19 06:54:56,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:54:56,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:54:56,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:54:56,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:54:56,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:54:56,206 INFO L87 Difference]: Start difference. First operand 24976 states and 38565 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-19 06:54:59,005 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 06:55:01,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:55:03,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:55:05,832 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:55:07,845 WARN L539 Checker$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 06:55:09,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:55:12,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:55:12,473 INFO L93 Difference]: Finished difference Result 25777 states and 39810 transitions. [2022-11-19 06:55:12,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:55:12,474 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 169 [2022-11-19 06:55:12,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:55:12,624 INFO L225 Difference]: With dead ends: 25777 [2022-11-19 06:55:12,624 INFO L226 Difference]: Without dead ends: 25774 [2022-11-19 06:55:12,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:55:12,639 INFO L413 NwaCegarLoop]: 3721 mSDtfsCounter, 3729 mSDsluCounter, 1106 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3734 SdHoareTripleChecker+Valid, 4827 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:55:12,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3734 Valid, 4827 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 579 Invalid, 3 Unknown, 0 Unchecked, 15.1s Time] [2022-11-19 06:55:12,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25774 states. [2022-11-19 06:55:14,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25774 to 25286. [2022-11-19 06:55:14,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25286 states, 14812 states have (on average 1.377059141236835) internal successors, (20397), 15447 states have internal predecessors, (20397), 9277 states have call successors, (9277), 1201 states have call predecessors, (9277), 1196 states have return successors, (9377), 9027 states have call predecessors, (9377), 9269 states have call successors, (9377) [2022-11-19 06:55:15,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25286 states to 25286 states and 39051 transitions. [2022-11-19 06:55:15,215 INFO L78 Accepts]: Start accepts. Automaton has 25286 states and 39051 transitions. Word has length 169 [2022-11-19 06:55:15,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:55:15,216 INFO L495 AbstractCegarLoop]: Abstraction has 25286 states and 39051 transitions. [2022-11-19 06:55:15,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-19 06:55:15,216 INFO L276 IsEmpty]: Start isEmpty. Operand 25286 states and 39051 transitions. [2022-11-19 06:55:15,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-11-19 06:55:15,221 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:55:15,221 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:55:15,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 06:55:15,222 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:55:15,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:55:15,222 INFO L85 PathProgramCache]: Analyzing trace with hash -71755475, now seen corresponding path program 1 times [2022-11-19 06:55:15,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:55:15,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613359438] [2022-11-19 06:55:15,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:55:15,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:55:15,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:55:16,126 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2022-11-19 06:55:16,127 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:55:16,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613359438] [2022-11-19 06:55:16,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613359438] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:55:16,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:55:16,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:55:16,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524100210] [2022-11-19 06:55:16,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:55:16,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:55:16,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:55:16,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:55:16,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:55:16,130 INFO L87 Difference]: Start difference. First operand 25286 states and 39051 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-19 06:55:21,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:55:23,538 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:55:26,336 WARN L539 Checker$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 06:55:28,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:55:30,364 WARN L539 Checker$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 06:55:32,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:55:34,797 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:55:36,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:55:40,034 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:55:41,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:55:44,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:55:44,989 INFO L93 Difference]: Finished difference Result 71162 states and 109918 transitions. [2022-11-19 06:55:44,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:55:44,990 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 170 [2022-11-19 06:55:44,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:55:45,351 INFO L225 Difference]: With dead ends: 71162 [2022-11-19 06:55:45,352 INFO L226 Difference]: Without dead ends: 45911 [2022-11-19 06:55:45,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:55:45,553 INFO L413 NwaCegarLoop]: 4480 mSDtfsCounter, 3639 mSDsluCounter, 3325 mSDsCounter, 0 mSdLazyCounter, 923 mSolverCounterSat, 5 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3641 SdHoareTripleChecker+Valid, 7805 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 923 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:55:45,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3641 Valid, 7805 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 923 Invalid, 5 Unknown, 0 Unchecked, 26.1s Time] [2022-11-19 06:55:45,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45911 states. [2022-11-19 06:55:49,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45911 to 45872. [2022-11-19 06:55:49,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45872 states, 27110 states have (on average 1.3782736997417926) internal successors, (37365), 28200 states have internal predecessors, (37365), 16554 states have call successors, (16554), 2236 states have call predecessors, (16554), 2207 states have return successors, (16945), 16124 states have call predecessors, (16945), 16545 states have call successors, (16945) [2022-11-19 06:55:49,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45872 states to 45872 states and 70864 transitions. [2022-11-19 06:55:49,688 INFO L78 Accepts]: Start accepts. Automaton has 45872 states and 70864 transitions. Word has length 170 [2022-11-19 06:55:49,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:55:49,689 INFO L495 AbstractCegarLoop]: Abstraction has 45872 states and 70864 transitions. [2022-11-19 06:55:49,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-19 06:55:49,689 INFO L276 IsEmpty]: Start isEmpty. Operand 45872 states and 70864 transitions. [2022-11-19 06:55:49,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-19 06:55:49,692 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:55:49,692 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:55:49,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 06:55:49,693 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:55:49,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:55:49,694 INFO L85 PathProgramCache]: Analyzing trace with hash 2069218067, now seen corresponding path program 1 times [2022-11-19 06:55:49,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:55:49,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482901487] [2022-11-19 06:55:49,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:55:49,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:55:49,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:55:50,223 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2022-11-19 06:55:50,223 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:55:50,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482901487] [2022-11-19 06:55:50,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482901487] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:55:50,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:55:50,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:55:50,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425160859] [2022-11-19 06:55:50,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:55:50,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:55:50,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:55:50,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:55:50,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:55:50,228 INFO L87 Difference]: Start difference. First operand 45872 states and 70864 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-19 06:55:53,217 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 06:55:56,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:55:59,262 WARN L539 Checker$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 06:56:02,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:56:04,143 WARN L539 Checker$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 06:56:08,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:56:08,690 INFO L93 Difference]: Finished difference Result 45955 states and 70981 transitions. [2022-11-19 06:56:08,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:56:08,691 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 171 [2022-11-19 06:56:08,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:56:08,957 INFO L225 Difference]: With dead ends: 45955 [2022-11-19 06:56:08,957 INFO L226 Difference]: Without dead ends: 45944 [2022-11-19 06:56:08,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:56:08,985 INFO L413 NwaCegarLoop]: 3720 mSDtfsCounter, 3724 mSDsluCounter, 1106 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3729 SdHoareTripleChecker+Valid, 4826 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.5s IncrementalHoareTripleChecker+Time [2022-11-19 06:56:08,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3729 Valid, 4826 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 577 Invalid, 4 Unknown, 0 Unchecked, 15.5s Time] [2022-11-19 06:56:09,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45944 states. [2022-11-19 06:56:12,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45944 to 45915. [2022-11-19 06:56:12,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45915 states, 27126 states have (on average 1.3777925237779252) internal successors, (37374), 28215 states have internal predecessors, (37374), 16565 states have call successors, (16565), 2252 states have call predecessors, (16565), 2223 states have return successors, (16957), 16136 states have call predecessors, (16957), 16557 states have call successors, (16957) [2022-11-19 06:56:12,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45915 states to 45915 states and 70896 transitions. [2022-11-19 06:56:12,865 INFO L78 Accepts]: Start accepts. Automaton has 45915 states and 70896 transitions. Word has length 171 [2022-11-19 06:56:12,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:56:12,865 INFO L495 AbstractCegarLoop]: Abstraction has 45915 states and 70896 transitions. [2022-11-19 06:56:12,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-19 06:56:12,866 INFO L276 IsEmpty]: Start isEmpty. Operand 45915 states and 70896 transitions. [2022-11-19 06:56:12,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-11-19 06:56:12,871 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:56:12,871 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:56:12,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 06:56:12,872 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:56:12,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:56:12,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1427854128, now seen corresponding path program 1 times [2022-11-19 06:56:12,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:56:12,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085445039] [2022-11-19 06:56:12,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:56:12,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:56:13,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:56:13,644 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 534 trivial. 0 not checked. [2022-11-19 06:56:13,644 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:56:13,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085445039] [2022-11-19 06:56:13,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085445039] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:56:13,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:56:13,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:56:13,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283892820] [2022-11-19 06:56:13,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:56:13,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:56:13,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:56:13,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:56:13,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:56:13,647 INFO L87 Difference]: Start difference. First operand 45915 states and 70896 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-19 06:56:16,888 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:56:21,082 WARN L539 Checker$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 06:56:23,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:56:25,115 WARN L539 Checker$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 06:56:28,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:56:36,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:56:38,501 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:56:41,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:56:41,417 INFO L93 Difference]: Finished difference Result 130003 states and 200934 transitions. [2022-11-19 06:56:41,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:56:41,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 201 [2022-11-19 06:56:41,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:56:41,969 INFO L225 Difference]: With dead ends: 130003 [2022-11-19 06:56:41,970 INFO L226 Difference]: Without dead ends: 84123 [2022-11-19 06:56:42,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:56:42,164 INFO L413 NwaCegarLoop]: 4529 mSDtfsCounter, 3709 mSDsluCounter, 3325 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3714 SdHoareTripleChecker+Valid, 7854 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.3s IncrementalHoareTripleChecker+Time [2022-11-19 06:56:42,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3714 Valid, 7854 Invalid, 923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 916 Invalid, 5 Unknown, 0 Unchecked, 22.3s Time] [2022-11-19 06:56:42,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84123 states. [2022-11-19 06:56:48,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84123 to 84035. [2022-11-19 06:56:48,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84035 states, 49992 states have (on average 1.3831813090094416) internal successors, (69148), 51989 states have internal predecessors, (69148), 30001 states have call successors, (30001), 4098 states have call predecessors, (30001), 4041 states have return successors, (30821), 29208 states have call predecessors, (30821), 29993 states have call successors, (30821) [2022-11-19 06:56:49,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84035 states to 84035 states and 129970 transitions. [2022-11-19 06:56:49,147 INFO L78 Accepts]: Start accepts. Automaton has 84035 states and 129970 transitions. Word has length 201 [2022-11-19 06:56:49,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:56:49,147 INFO L495 AbstractCegarLoop]: Abstraction has 84035 states and 129970 transitions. [2022-11-19 06:56:49,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-19 06:56:49,148 INFO L276 IsEmpty]: Start isEmpty. Operand 84035 states and 129970 transitions. [2022-11-19 06:56:49,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-11-19 06:56:49,152 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:56:49,152 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 8, 8, 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] [2022-11-19 06:56:49,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-19 06:56:49,152 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:56:49,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:56:49,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1328315954, now seen corresponding path program 1 times [2022-11-19 06:56:49,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:56:49,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281208216] [2022-11-19 06:56:49,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:56:49,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:56:49,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:56:49,738 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 748 trivial. 0 not checked. [2022-11-19 06:56:49,738 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:56:49,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281208216] [2022-11-19 06:56:49,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281208216] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:56:49,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:56:49,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:56:49,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442205785] [2022-11-19 06:56:49,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:56:49,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:56:49,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:56:49,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:56:49,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:56:49,741 INFO L87 Difference]: Start difference. First operand 84035 states and 129970 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-19 06:56:51,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:56:56,021 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:56:57,661 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:56:58,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:57:00,718 WARN L539 Checker$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 06:57:02,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:57:09,807 WARN L539 Checker$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 06:57:14,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:57:16,727 WARN L539 Checker$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 06:57:18,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:57:20,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:57:25,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:57:25,472 INFO L93 Difference]: Finished difference Result 249654 states and 386111 transitions. [2022-11-19 06:57:25,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:57:25,484 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 238 [2022-11-19 06:57:25,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:57:26,427 INFO L225 Difference]: With dead ends: 249654 [2022-11-19 06:57:26,428 INFO L226 Difference]: Without dead ends: 165654 [2022-11-19 06:57:26,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:57:26,751 INFO L413 NwaCegarLoop]: 4567 mSDtfsCounter, 3760 mSDsluCounter, 3325 mSDsCounter, 0 mSdLazyCounter, 921 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3762 SdHoareTripleChecker+Valid, 7892 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 921 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.6s IncrementalHoareTripleChecker+Time [2022-11-19 06:57:26,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3762 Valid, 7892 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 921 Invalid, 4 Unknown, 0 Unchecked, 25.6s Time] [2022-11-19 06:57:27,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165654 states.