./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--gpu--drm--ast--ast.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_357c004c-31c9-4793-978d-24db4acd62e9/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_357c004c-31c9-4793-978d-24db4acd62e9/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_357c004c-31c9-4793-978d-24db4acd62e9/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_357c004c-31c9-4793-978d-24db4acd62e9/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--gpu--drm--ast--ast.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_357c004c-31c9-4793-978d-24db4acd62e9/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_357c004c-31c9-4793-978d-24db4acd62e9/bin/utaipan-7li7fVZpFI --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 e37e45521ffb127b83b9baab443e42b7c078cf8a8451cb2a1813ac325e01717d --- 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-5e519f3 [2022-11-03 03:32:01,591 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:32:01,595 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:32:01,636 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:32:01,637 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:32:01,641 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:32:01,643 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:32:01,647 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:32:01,649 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:32:01,658 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:32:01,660 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:32:01,662 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:32:01,663 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:32:01,666 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:32:01,667 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:32:01,669 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:32:01,671 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:32:01,672 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:32:01,674 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:32:01,681 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:32:01,683 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:32:01,684 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:32:01,687 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:32:01,688 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:32:01,696 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:32:01,697 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:32:01,697 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:32:01,699 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:32:01,699 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:32:01,700 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:32:01,701 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:32:01,702 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:32:01,704 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:32:01,706 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:32:01,708 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:32:01,708 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:32:01,709 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:32:01,710 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:32:01,710 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:32:01,711 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:32:01,711 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:32:01,713 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_357c004c-31c9-4793-978d-24db4acd62e9/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 03:32:01,753 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:32:01,753 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:32:01,754 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:32:01,754 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:32:01,755 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:32:01,755 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:32:01,755 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:32:01,756 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:32:01,756 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:32:01,756 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:32:01,757 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:32:01,757 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:32:01,758 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:32:01,758 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:32:01,758 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:32:01,758 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:32:01,759 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:32:01,759 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:32:01,759 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:32:01,760 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:32:01,760 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:32:01,760 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:32:01,760 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:32:01,762 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:32:01,762 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:32:01,762 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:32:01,763 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:32:01,763 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:32:01,763 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:32:01,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:32:01,764 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:32:01,764 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:32:01,764 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:32:01,764 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:32:01,765 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:32:01,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:32:01,765 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:32:01,765 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:32:01,765 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_357c004c-31c9-4793-978d-24db4acd62e9/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_357c004c-31c9-4793-978d-24db4acd62e9/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e37e45521ffb127b83b9baab443e42b7c078cf8a8451cb2a1813ac325e01717d [2022-11-03 03:32:02,063 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:32:02,085 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:32:02,094 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:32:02,096 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:32:02,097 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:32:02,098 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_357c004c-31c9-4793-978d-24db4acd62e9/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--gpu--drm--ast--ast.ko-main.cil.out.i [2022-11-03 03:32:02,187 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_357c004c-31c9-4793-978d-24db4acd62e9/bin/utaipan-7li7fVZpFI/data/6f961961f/eec122acb65247a0998da2d5c3ab2171/FLAGd62c762ed [2022-11-03 03:32:03,136 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:32:03,137 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_357c004c-31c9-4793-978d-24db4acd62e9/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--gpu--drm--ast--ast.ko-main.cil.out.i [2022-11-03 03:32:03,195 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_357c004c-31c9-4793-978d-24db4acd62e9/bin/utaipan-7li7fVZpFI/data/6f961961f/eec122acb65247a0998da2d5c3ab2171/FLAGd62c762ed [2022-11-03 03:32:03,518 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_357c004c-31c9-4793-978d-24db4acd62e9/bin/utaipan-7li7fVZpFI/data/6f961961f/eec122acb65247a0998da2d5c3ab2171 [2022-11-03 03:32:03,520 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:32:03,521 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:32:03,523 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:32:03,523 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:32:03,529 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:32:03,531 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:32:03" (1/1) ... [2022-11-03 03:32:03,532 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1da5571b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:32:03, skipping insertion in model container [2022-11-03 03:32:03,532 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:32:03" (1/1) ... [2022-11-03 03:32:03,542 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:32:03,734 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:32:06,940 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_357c004c-31c9-4793-978d-24db4acd62e9/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--gpu--drm--ast--ast.ko-main.cil.out.i[353005,353018] [2022-11-03 03:32:07,171 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:32:07,248 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:32:07,758 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_357c004c-31c9-4793-978d-24db4acd62e9/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--gpu--drm--ast--ast.ko-main.cil.out.i[353005,353018] [2022-11-03 03:32:07,782 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:32:08,142 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:32:08,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:32:08 WrapperNode [2022-11-03 03:32:08,143 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:32:08,144 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:32:08,144 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:32:08,145 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:32:08,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:32:08" (1/1) ... [2022-11-03 03:32:08,299 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:32:08" (1/1) ... [2022-11-03 03:32:08,670 INFO L138 Inliner]: procedures = 511, calls = 3849, calls flagged for inlining = 265, calls inlined = 264, statements flattened = 9561 [2022-11-03 03:32:08,671 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:32:08,672 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:32:08,672 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:32:08,673 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:32:08,683 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:32:08" (1/1) ... [2022-11-03 03:32:08,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:32:08" (1/1) ... [2022-11-03 03:32:08,774 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:32:08" (1/1) ... [2022-11-03 03:32:08,775 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:32:08" (1/1) ... [2022-11-03 03:32:08,991 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:32:08" (1/1) ... [2022-11-03 03:32:09,035 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:32:08" (1/1) ... [2022-11-03 03:32:09,082 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:32:08" (1/1) ... [2022-11-03 03:32:09,111 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:32:08" (1/1) ... [2022-11-03 03:32:09,266 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:32:09,267 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:32:09,268 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:32:09,268 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:32:09,269 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:32:08" (1/1) ... [2022-11-03 03:32:09,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:32:09,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_357c004c-31c9-4793-978d-24db4acd62e9/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:32:09,299 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_357c004c-31c9-4793-978d-24db4acd62e9/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:32:09,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_357c004c-31c9-4793-978d-24db4acd62e9/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:32:09,352 INFO L130 BoogieDeclarations]: Found specification of procedure drm_global_item_ref [2022-11-03 03:32:09,353 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_global_item_ref [2022-11-03 03:32:09,353 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 03:32:09,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 03:32:09,353 INFO L130 BoogieDeclarations]: Found specification of procedure ast_drm_freeze [2022-11-03 03:32:09,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_drm_freeze [2022-11-03 03:32:09,353 INFO L130 BoogieDeclarations]: Found specification of procedure drm_helper_probe_single_connector_modes [2022-11-03 03:32:09,354 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_helper_probe_single_connector_modes [2022-11-03 03:32:09,354 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_dpms [2022-11-03 03:32:09,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_dpms [2022-11-03 03:32:09,354 INFO L130 BoogieDeclarations]: Found specification of procedure ast_bo_pin [2022-11-03 03:32:09,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_bo_pin [2022-11-03 03:32:09,354 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_struct_mutex_of_drm_device [2022-11-03 03:32:09,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_struct_mutex_of_drm_device [2022-11-03 03:32:09,355 INFO L130 BoogieDeclarations]: Found specification of procedure ast_read32 [2022-11-03 03:32:09,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_read32 [2022-11-03 03:32:09,355 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-03 03:32:09,355 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-03 03:32:09,355 INFO L130 BoogieDeclarations]: Found specification of procedure cbr_dll2 [2022-11-03 03:32:09,355 INFO L138 BoogieDeclarations]: Found implementation of procedure cbr_dll2 [2022-11-03 03:32:09,356 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_mode_fixup [2022-11-03 03:32:09,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_mode_fixup [2022-11-03 03:32:09,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:32:09,356 INFO L130 BoogieDeclarations]: Found specification of procedure moutdwm [2022-11-03 03:32:09,356 INFO L138 BoogieDeclarations]: Found implementation of procedure moutdwm [2022-11-03 03:32:09,356 INFO L130 BoogieDeclarations]: Found specification of procedure ast_drm_thaw [2022-11-03 03:32:09,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_drm_thaw [2022-11-03 03:32:09,357 INFO L130 BoogieDeclarations]: Found specification of procedure ast_dirty_update [2022-11-03 03:32:09,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_dirty_update [2022-11-03 03:32:09,357 INFO L130 BoogieDeclarations]: Found specification of procedure ast_set_index_reg_mask [2022-11-03 03:32:09,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_set_index_reg_mask [2022-11-03 03:32:09,358 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_bo_kmap [2022-11-03 03:32:09,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_bo_kmap [2022-11-03 03:32:09,358 INFO L130 BoogieDeclarations]: Found specification of procedure ast_ttm_placement [2022-11-03 03:32:09,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_ttm_placement [2022-11-03 03:32:09,358 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_load_lut [2022-11-03 03:32:09,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_load_lut [2022-11-03 03:32:09,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 03:32:09,359 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_bo_kunmap [2022-11-03 03:32:09,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_bo_kunmap [2022-11-03 03:32:09,359 INFO L130 BoogieDeclarations]: Found specification of procedure drm_global_item_unref [2022-11-03 03:32:09,360 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_global_item_unref [2022-11-03 03:32:09,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 03:32:09,360 INFO L130 BoogieDeclarations]: Found specification of procedure ast_user_framebuffer_destroy [2022-11-03 03:32:09,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_user_framebuffer_destroy [2022-11-03 03:32:09,361 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_disable [2022-11-03 03:32:09,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_disable [2022-11-03 03:32:09,361 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 03:32:09,362 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_mode_set_base [2022-11-03 03:32:09,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_mode_set_base [2022-11-03 03:32:09,363 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iomap [2022-11-03 03:32:09,363 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iomap [2022-11-03 03:32:09,363 INFO L130 BoogieDeclarations]: Found specification of procedure mindwm [2022-11-03 03:32:09,363 INFO L138 BoogieDeclarations]: Found implementation of procedure mindwm [2022-11-03 03:32:09,363 INFO L130 BoogieDeclarations]: Found specification of procedure ast_io_read8 [2022-11-03 03:32:09,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_io_read8 [2022-11-03 03:32:09,364 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-11-03 03:32:09,364 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-11-03 03:32:09,364 INFO L130 BoogieDeclarations]: Found specification of procedure ast_user_framebuffer_create_handle [2022-11-03 03:32:09,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_user_framebuffer_create_handle [2022-11-03 03:32:09,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 03:32:09,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:32:09,365 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_gamma_set [2022-11-03 03:32:09,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_gamma_set [2022-11-03 03:32:09,367 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-03 03:32:09,367 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-03 03:32:09,367 INFO L130 BoogieDeclarations]: Found specification of procedure ast_fbdev_set_suspend [2022-11-03 03:32:09,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_fbdev_set_suspend [2022-11-03 03:32:09,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 03:32:09,368 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 03:32:09,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 03:32:09,369 INFO L130 BoogieDeclarations]: Found specification of procedure ast_framebuffer_init [2022-11-03 03:32:09,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_framebuffer_init [2022-11-03 03:32:09,369 INFO L130 BoogieDeclarations]: Found specification of procedure ast_cursor_set [2022-11-03 03:32:09,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_cursor_set [2022-11-03 03:32:09,369 INFO L130 BoogieDeclarations]: Found specification of procedure ast_open_key [2022-11-03 03:32:09,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_open_key [2022-11-03 03:32:09,370 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_bo_validate [2022-11-03 03:32:09,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_bo_validate [2022-11-03 03:32:09,370 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_test_burst2 [2022-11-03 03:32:09,370 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_test_burst2 [2022-11-03 03:32:09,371 INFO L130 BoogieDeclarations]: Found specification of procedure ast_bo_unreserve [2022-11-03 03:32:09,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_bo_unreserve [2022-11-03 03:32:09,371 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-03 03:32:09,371 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-03 03:32:09,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:32:09,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:32:09,372 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2022-11-03 03:32:09,373 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2022-11-03 03:32:09,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 03:32:09,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 03:32:09,373 INFO L130 BoogieDeclarations]: Found specification of procedure ast_connector_detect [2022-11-03 03:32:09,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_connector_detect [2022-11-03 03:32:09,374 INFO L130 BoogieDeclarations]: Found specification of procedure ast_encoder_prepare [2022-11-03 03:32:09,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_encoder_prepare [2022-11-03 03:32:09,374 INFO L130 BoogieDeclarations]: Found specification of procedure ast_get_index_reg_mask [2022-11-03 03:32:09,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_get_index_reg_mask [2022-11-03 03:32:09,375 INFO L130 BoogieDeclarations]: Found specification of procedure ast_gem_create [2022-11-03 03:32:09,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_gem_create [2022-11-03 03:32:09,375 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_prepare [2022-11-03 03:32:09,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_prepare [2022-11-03 03:32:09,375 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 03:32:09,375 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 03:32:09,376 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 03:32:09,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 03:32:09,376 INFO L130 BoogieDeclarations]: Found specification of procedure ast_bo_reserve [2022-11-03 03:32:09,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_bo_reserve [2022-11-03 03:32:09,376 INFO L130 BoogieDeclarations]: Found specification of procedure drm_gem_object_unreference_unlocked [2022-11-03 03:32:09,377 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_gem_object_unreference_unlocked [2022-11-03 03:32:09,377 INFO L130 BoogieDeclarations]: Found specification of procedure ast_mmap [2022-11-03 03:32:09,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_mmap [2022-11-03 03:32:09,381 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-03 03:32:09,381 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-03 03:32:09,381 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-11-03 03:32:09,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-11-03 03:32:09,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 03:32:09,382 INFO L130 BoogieDeclarations]: Found specification of procedure drm_gem_object_free [2022-11-03 03:32:09,383 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_bo_global_release [2022-11-03 03:32:09,383 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_struct_mutex_of_drm_device [2022-11-03 03:32:09,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_struct_mutex_of_drm_device [2022-11-03 03:32:09,388 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 03:32:09,389 INFO L130 BoogieDeclarations]: Found specification of procedure ast_connector_destroy [2022-11-03 03:32:09,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_connector_destroy [2022-11-03 03:32:09,389 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_commit [2022-11-03 03:32:09,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_commit [2022-11-03 03:32:09,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 03:32:09,389 INFO L130 BoogieDeclarations]: Found specification of procedure ast_pm_resume [2022-11-03 03:32:09,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_pm_resume [2022-11-03 03:32:09,390 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-03 03:32:09,390 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-03 03:32:09,390 INFO L130 BoogieDeclarations]: Found specification of procedure ast_io_write8 [2022-11-03 03:32:09,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_io_write8 [2022-11-03 03:32:09,390 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_kmap_obj_virtual [2022-11-03 03:32:09,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_kmap_obj_virtual [2022-11-03 03:32:09,390 INFO L130 BoogieDeclarations]: Found specification of procedure ast_encoder_destroy [2022-11-03 03:32:09,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_encoder_destroy [2022-11-03 03:32:09,391 INFO L130 BoogieDeclarations]: Found specification of procedure ast_bo_gpu_offset [2022-11-03 03:32:09,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_bo_gpu_offset [2022-11-03 03:32:09,391 INFO L130 BoogieDeclarations]: Found specification of procedure ast_write32 [2022-11-03 03:32:09,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_write32 [2022-11-03 03:32:09,391 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_reset [2022-11-03 03:32:09,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_reset [2022-11-03 03:32:09,391 INFO L130 BoogieDeclarations]: Found specification of procedure ast_gem_free_object [2022-11-03 03:32:09,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_gem_free_object [2022-11-03 03:32:09,392 INFO L130 BoogieDeclarations]: Found specification of procedure drm_gem_object_unreference_unlocked___0 [2022-11-03 03:32:09,392 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_gem_object_unreference_unlocked___0 [2022-11-03 03:32:09,392 INFO L130 BoogieDeclarations]: Found specification of procedure ast_ttm_backend_destroy [2022-11-03 03:32:09,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_ttm_backend_destroy [2022-11-03 03:32:09,392 INFO L130 BoogieDeclarations]: Found specification of procedure ast_pci_remove [2022-11-03 03:32:09,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_pci_remove [2022-11-03 03:32:09,393 INFO L130 BoogieDeclarations]: Found specification of procedure drm_helper_connector_dpms [2022-11-03 03:32:09,393 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_helper_connector_dpms [2022-11-03 03:32:09,393 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_mode_set [2022-11-03 03:32:09,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_mode_set [2022-11-03 03:32:09,393 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_test_single2 [2022-11-03 03:32:09,393 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_test_single2 [2022-11-03 03:32:09,393 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 03:32:09,394 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 03:32:09,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 03:32:09,394 INFO L130 BoogieDeclarations]: Found specification of procedure ast_set_index_reg [2022-11-03 03:32:09,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_set_index_reg [2022-11-03 03:32:09,394 INFO L130 BoogieDeclarations]: Found specification of procedure cbrdlli_ast2150 [2022-11-03 03:32:09,394 INFO L138 BoogieDeclarations]: Found implementation of procedure cbrdlli_ast2150 [2022-11-03 03:32:09,394 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 03:32:09,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 03:32:09,395 INFO L130 BoogieDeclarations]: Found specification of procedure drm_fasync [2022-11-03 03:32:09,395 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_fasync [2022-11-03 03:32:09,395 INFO L130 BoogieDeclarations]: Found specification of procedure drm_framebuffer_cleanup [2022-11-03 03:32:09,395 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_framebuffer_cleanup [2022-11-03 03:32:09,395 INFO L130 BoogieDeclarations]: Found specification of procedure ast_encoder_commit [2022-11-03 03:32:09,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_encoder_commit [2022-11-03 03:32:09,395 INFO L130 BoogieDeclarations]: Found specification of procedure drm_crtc_helper_set_config [2022-11-03 03:32:09,396 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_crtc_helper_set_config [2022-11-03 03:32:09,396 INFO L130 BoogieDeclarations]: Found specification of procedure console_lock [2022-11-03 03:32:09,396 INFO L138 BoogieDeclarations]: Found implementation of procedure console_lock [2022-11-03 03:32:09,396 INFO L130 BoogieDeclarations]: Found specification of procedure ast_cursor_move [2022-11-03 03:32:09,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_cursor_move [2022-11-03 03:32:09,396 INFO L130 BoogieDeclarations]: Found specification of procedure console_unlock [2022-11-03 03:32:09,396 INFO L138 BoogieDeclarations]: Found implementation of procedure console_unlock [2022-11-03 03:32:09,397 INFO L130 BoogieDeclarations]: Found specification of procedure drm_poll [2022-11-03 03:32:09,397 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_poll [2022-11-03 03:32:09,397 INFO L130 BoogieDeclarations]: Found specification of procedure drm_mode_connector_update_edid_property [2022-11-03 03:32:09,397 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_mode_connector_update_edid_property [2022-11-03 03:32:09,397 INFO L130 BoogieDeclarations]: Found specification of procedure cbr_scan2 [2022-11-03 03:32:09,398 INFO L138 BoogieDeclarations]: Found implementation of procedure cbr_scan2 [2022-11-03 03:32:09,399 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-03 03:32:09,399 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-03 03:32:09,399 INFO L130 BoogieDeclarations]: Found specification of procedure ast_ttm_tt_unpopulate [2022-11-03 03:32:09,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_ttm_tt_unpopulate [2022-11-03 03:32:09,399 INFO L130 BoogieDeclarations]: Found specification of procedure drm_gem_object_lookup [2022-11-03 03:32:09,399 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_gem_object_lookup [2022-11-03 03:32:09,399 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_destroy [2022-11-03 03:32:09,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_destroy [2022-11-03 03:32:09,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:32:10,452 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:32:10,456 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:32:24,349 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ast_gem_init_object_returnLabel#1: main_#t~ret94#1 := ast_gem_init_object_#res#1;assume { :end_inline_ast_gem_init_object } true;assume -2147483648 <= main_#t~ret94#1 && main_#t~ret94#1 <= 2147483647;havoc main_#t~ret94#1;~ldv_state_variable_13~0 := 1; [2022-11-03 03:32:24,533 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:32:28,377 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:32:28,377 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 03:32:28,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:32:28 BoogieIcfgContainer [2022-11-03 03:32:28,384 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:32:28,387 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:32:28,387 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:32:28,397 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:32:28,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:32:03" (1/3) ... [2022-11-03 03:32:28,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bb616ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:32:28, skipping insertion in model container [2022-11-03 03:32:28,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:32:08" (2/3) ... [2022-11-03 03:32:28,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bb616ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:32:28, skipping insertion in model container [2022-11-03 03:32:28,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:32:28" (3/3) ... [2022-11-03 03:32:28,401 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--gpu--drm--ast--ast.ko-main.cil.out.i [2022-11-03 03:32:28,421 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:32:28,422 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:32:28,541 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:32:28,549 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;@3aeaaa38, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:32:28,549 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:32:28,561 INFO L276 IsEmpty]: Start isEmpty. Operand has 1802 states, 1065 states have (on average 1.4272300469483568) internal successors, (1520), 1123 states have internal predecessors, (1520), 647 states have call successors, (647), 88 states have call predecessors, (647), 88 states have return successors, (647), 627 states have call predecessors, (647), 647 states have call successors, (647) [2022-11-03 03:32:28,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 03:32:28,574 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:32:28,575 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:32:28,575 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:32:28,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:32:28,582 INFO L85 PathProgramCache]: Analyzing trace with hash -173732282, now seen corresponding path program 1 times [2022-11-03 03:32:28,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:32:28,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237283858] [2022-11-03 03:32:28,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:32:28,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:32:29,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:32:29,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:32:29,562 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:32:29,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237283858] [2022-11-03 03:32:29,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237283858] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:32:29,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:32:29,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:32:29,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558030784] [2022-11-03 03:32:29,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:32:29,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:32:29,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:32:29,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:32:29,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:32:29,620 INFO L87 Difference]: Start difference. First operand has 1802 states, 1065 states have (on average 1.4272300469483568) internal successors, (1520), 1123 states have internal predecessors, (1520), 647 states have call successors, (647), 88 states have call predecessors, (647), 88 states have return successors, (647), 627 states have call predecessors, (647), 647 states have call successors, (647) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:32:33,403 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 [] [2022-11-03 03:32:37,502 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:32:39,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:32:41,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:32:44,424 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:32:46,458 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:32:46,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:32:46,971 INFO L93 Difference]: Finished difference Result 5365 states and 8441 transitions. [2022-11-03 03:32:46,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:32:46,973 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-03 03:32:46,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:32:47,015 INFO L225 Difference]: With dead ends: 5365 [2022-11-03 03:32:47,015 INFO L226 Difference]: Without dead ends: 3560 [2022-11-03 03:32:47,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:32:47,033 INFO L413 NwaCegarLoop]: 3215 mSDtfsCounter, 2731 mSDsluCounter, 2791 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2736 SdHoareTripleChecker+Valid, 5722 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:32:47,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2736 Valid, 5722 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 599 Invalid, 3 Unknown, 0 Unchecked, 17.0s Time] [2022-11-03 03:32:47,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3560 states. [2022-11-03 03:32:47,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3560 to 3548. [2022-11-03 03:32:47,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3548 states, 2100 states have (on average 1.4233333333333333) internal successors, (2989), 2203 states have internal predecessors, (2989), 1273 states have call successors, (1273), 175 states have call predecessors, (1273), 174 states have return successors, (1267), 1221 states have call predecessors, (1267), 1262 states have call successors, (1267) [2022-11-03 03:32:47,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3548 states to 3548 states and 5529 transitions. [2022-11-03 03:32:47,515 INFO L78 Accepts]: Start accepts. Automaton has 3548 states and 5529 transitions. Word has length 14 [2022-11-03 03:32:47,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:32:47,517 INFO L495 AbstractCegarLoop]: Abstraction has 3548 states and 5529 transitions. [2022-11-03 03:32:47,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:32:47,518 INFO L276 IsEmpty]: Start isEmpty. Operand 3548 states and 5529 transitions. [2022-11-03 03:32:47,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-03 03:32:47,527 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:32:47,527 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:32:47,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:32:47,529 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:32:47,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:32:47,530 INFO L85 PathProgramCache]: Analyzing trace with hash 328606933, now seen corresponding path program 1 times [2022-11-03 03:32:47,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:32:47,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848343171] [2022-11-03 03:32:47,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:32:47,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:32:47,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:32:47,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:32:47,981 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:32:47,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848343171] [2022-11-03 03:32:47,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848343171] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:32:47,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:32:47,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:32:47,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418661668] [2022-11-03 03:32:47,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:32:47,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:32:47,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:32:47,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:32:47,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:32:47,984 INFO L87 Difference]: Start difference. First operand 3548 states and 5529 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:32:53,916 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:32:56,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:32:56,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:32:56,496 INFO L93 Difference]: Finished difference Result 3550 states and 5530 transitions. [2022-11-03 03:32:56,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:32:56,496 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-03 03:32:56,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:32:56,516 INFO L225 Difference]: With dead ends: 3550 [2022-11-03 03:32:56,516 INFO L226 Difference]: Without dead ends: 3547 [2022-11-03 03:32:56,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:32:56,524 INFO L413 NwaCegarLoop]: 2506 mSDtfsCounter, 2782 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2782 SdHoareTripleChecker+Valid, 2506 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:32:56,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2782 Valid, 2506 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2022-11-03 03:32:56,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3547 states. [2022-11-03 03:32:56,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3547 to 3547. [2022-11-03 03:32:56,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3547 states, 2100 states have (on average 1.4228571428571428) internal successors, (2988), 2202 states have internal predecessors, (2988), 1272 states have call successors, (1272), 175 states have call predecessors, (1272), 174 states have return successors, (1267), 1221 states have call predecessors, (1267), 1262 states have call successors, (1267) [2022-11-03 03:32:56,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3547 states to 3547 states and 5527 transitions. [2022-11-03 03:32:56,805 INFO L78 Accepts]: Start accepts. Automaton has 3547 states and 5527 transitions. Word has length 16 [2022-11-03 03:32:56,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:32:56,805 INFO L495 AbstractCegarLoop]: Abstraction has 3547 states and 5527 transitions. [2022-11-03 03:32:56,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:32:56,806 INFO L276 IsEmpty]: Start isEmpty. Operand 3547 states and 5527 transitions. [2022-11-03 03:32:56,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 03:32:56,808 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:32:56,808 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:32:56,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:32:56,808 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:32:56,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:32:56,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1595766691, now seen corresponding path program 1 times [2022-11-03 03:32:56,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:32:56,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424918130] [2022-11-03 03:32:56,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:32:56,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:32:56,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:32:57,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:32:57,247 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:32:57,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424918130] [2022-11-03 03:32:57,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424918130] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:32:57,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:32:57,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:32:57,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588586188] [2022-11-03 03:32:57,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:32:57,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:32:57,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:32:57,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:32:57,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:32:57,250 INFO L87 Difference]: Start difference. First operand 3547 states and 5527 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:33:00,002 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 [] [2022-11-03 03:33:03,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:33:05,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:33:07,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:33:08,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:08,632 INFO L93 Difference]: Finished difference Result 4428 states and 6877 transitions. [2022-11-03 03:33:08,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:33:08,632 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-03 03:33:08,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:08,662 INFO L225 Difference]: With dead ends: 4428 [2022-11-03 03:33:08,662 INFO L226 Difference]: Without dead ends: 4425 [2022-11-03 03:33:08,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:33:08,668 INFO L413 NwaCegarLoop]: 2811 mSDtfsCounter, 2746 mSDsluCounter, 833 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2751 SdHoareTripleChecker+Valid, 3561 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:08,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2751 Valid, 3561 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 389 Invalid, 3 Unknown, 0 Unchecked, 11.2s Time] [2022-11-03 03:33:08,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4425 states. [2022-11-03 03:33:09,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4425 to 4419. [2022-11-03 03:33:09,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4419 states, 2545 states have (on average 1.4007858546168959) internal successors, (3565), 2669 states have internal predecessors, (3565), 1651 states have call successors, (1651), 221 states have call predecessors, (1651), 222 states have return successors, (1652), 1598 states have call predecessors, (1652), 1642 states have call successors, (1652) [2022-11-03 03:33:09,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4419 states to 4419 states and 6868 transitions. [2022-11-03 03:33:09,359 INFO L78 Accepts]: Start accepts. Automaton has 4419 states and 6868 transitions. Word has length 17 [2022-11-03 03:33:09,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:09,360 INFO L495 AbstractCegarLoop]: Abstraction has 4419 states and 6868 transitions. [2022-11-03 03:33:09,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:33:09,361 INFO L276 IsEmpty]: Start isEmpty. Operand 4419 states and 6868 transitions. [2022-11-03 03:33:09,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-03 03:33:09,363 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:09,363 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:33:09,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 03:33:09,364 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:33:09,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:09,365 INFO L85 PathProgramCache]: Analyzing trace with hash -2071948904, now seen corresponding path program 1 times [2022-11-03 03:33:09,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:09,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634646682] [2022-11-03 03:33:09,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:09,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:09,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:09,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:33:09,830 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:09,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634646682] [2022-11-03 03:33:09,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634646682] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:09,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:09,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:33:09,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005518163] [2022-11-03 03:33:09,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:09,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:33:09,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:09,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:33:09,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:33:09,836 INFO L87 Difference]: Start difference. First operand 4419 states and 6868 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:33:14,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:33:16,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:33:17,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:17,750 INFO L93 Difference]: Finished difference Result 4421 states and 6869 transitions. [2022-11-03 03:33:17,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:33:17,750 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-03 03:33:17,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:17,779 INFO L225 Difference]: With dead ends: 4421 [2022-11-03 03:33:17,779 INFO L226 Difference]: Without dead ends: 4418 [2022-11-03 03:33:17,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:33:17,784 INFO L413 NwaCegarLoop]: 2502 mSDtfsCounter, 2776 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2776 SdHoareTripleChecker+Valid, 2502 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:17,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2776 Valid, 2502 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2022-11-03 03:33:17,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4418 states. [2022-11-03 03:33:18,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4418 to 4418. [2022-11-03 03:33:18,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4418 states, 2545 states have (on average 1.4003929273084479) internal successors, (3564), 2668 states have internal predecessors, (3564), 1650 states have call successors, (1650), 221 states have call predecessors, (1650), 222 states have return successors, (1652), 1598 states have call predecessors, (1652), 1642 states have call successors, (1652) [2022-11-03 03:33:18,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4418 states to 4418 states and 6866 transitions. [2022-11-03 03:33:18,270 INFO L78 Accepts]: Start accepts. Automaton has 4418 states and 6866 transitions. Word has length 18 [2022-11-03 03:33:18,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:18,271 INFO L495 AbstractCegarLoop]: Abstraction has 4418 states and 6866 transitions. [2022-11-03 03:33:18,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:33:18,271 INFO L276 IsEmpty]: Start isEmpty. Operand 4418 states and 6866 transitions. [2022-11-03 03:33:18,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-03 03:33:18,273 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:18,274 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:33:18,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 03:33:18,274 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:33:18,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:18,275 INFO L85 PathProgramCache]: Analyzing trace with hash 192989510, now seen corresponding path program 1 times [2022-11-03 03:33:18,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:18,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019490321] [2022-11-03 03:33:18,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:18,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:18,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:18,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:33:18,621 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:18,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019490321] [2022-11-03 03:33:18,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019490321] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:18,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:18,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:33:18,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022696355] [2022-11-03 03:33:18,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:18,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:33:18,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:18,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:33:18,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:33:18,623 INFO L87 Difference]: Start difference. First operand 4418 states and 6866 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:33:21,490 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 [] [2022-11-03 03:33:24,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:33:26,888 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:33:28,925 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:33:30,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:30,983 INFO L93 Difference]: Finished difference Result 5454 states and 8475 transitions. [2022-11-03 03:33:30,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:33:30,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-03 03:33:30,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:31,017 INFO L225 Difference]: With dead ends: 5454 [2022-11-03 03:33:31,017 INFO L226 Difference]: Without dead ends: 5451 [2022-11-03 03:33:31,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:33:31,023 INFO L413 NwaCegarLoop]: 2886 mSDtfsCounter, 2740 mSDsluCounter, 1041 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2745 SdHoareTripleChecker+Valid, 3840 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:31,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2745 Valid, 3840 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 393 Invalid, 3 Unknown, 0 Unchecked, 12.1s Time] [2022-11-03 03:33:31,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5451 states. [2022-11-03 03:33:31,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5451 to 5385. [2022-11-03 03:33:31,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5385 states, 3030 states have (on average 1.3887788778877888) internal successors, (4208), 3179 states have internal predecessors, (4208), 2094 states have call successors, (2094), 259 states have call predecessors, (2094), 260 states have return successors, (2097), 2041 states have call predecessors, (2097), 2087 states have call successors, (2097) [2022-11-03 03:33:31,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5385 states to 5385 states and 8399 transitions. [2022-11-03 03:33:31,627 INFO L78 Accepts]: Start accepts. Automaton has 5385 states and 8399 transitions. Word has length 19 [2022-11-03 03:33:31,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:31,627 INFO L495 AbstractCegarLoop]: Abstraction has 5385 states and 8399 transitions. [2022-11-03 03:33:31,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:33:31,627 INFO L276 IsEmpty]: Start isEmpty. Operand 5385 states and 8399 transitions. [2022-11-03 03:33:31,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-03 03:33:31,629 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:31,629 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:33:31,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 03:33:31,630 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:33:31,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:31,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1774351773, now seen corresponding path program 1 times [2022-11-03 03:33:31,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:31,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219113038] [2022-11-03 03:33:31,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:31,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:31,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:31,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:33:31,932 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:31,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219113038] [2022-11-03 03:33:31,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219113038] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:31,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:31,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:33:31,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868429240] [2022-11-03 03:33:31,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:31,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:33:31,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:31,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:33:31,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:33:31,935 INFO L87 Difference]: Start difference. First operand 5385 states and 8399 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:33:38,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:33:40,832 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:33:43,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:33:45,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:33:47,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:33:48,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:48,492 INFO L93 Difference]: Finished difference Result 13065 states and 20364 transitions. [2022-11-03 03:33:48,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:33:48,493 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-03 03:33:48,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:48,550 INFO L225 Difference]: With dead ends: 13065 [2022-11-03 03:33:48,550 INFO L226 Difference]: Without dead ends: 7681 [2022-11-03 03:33:48,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:33:48,588 INFO L413 NwaCegarLoop]: 3115 mSDtfsCounter, 2511 mSDsluCounter, 2767 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2513 SdHoareTripleChecker+Valid, 5600 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:48,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2513 Valid, 5600 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 596 Invalid, 2 Unknown, 0 Unchecked, 16.1s Time] [2022-11-03 03:33:48,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7681 states. [2022-11-03 03:33:49,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7681 to 7660. [2022-11-03 03:33:49,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7660 states, 4288 states have (on average 1.3882929104477613) internal successors, (5953), 4505 states have internal predecessors, (5953), 2991 states have call successors, (2991), 379 states have call predecessors, (2991), 380 states have return successors, (2996), 2913 states have call predecessors, (2996), 2984 states have call successors, (2996) [2022-11-03 03:33:49,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7660 states to 7660 states and 11940 transitions. [2022-11-03 03:33:49,503 INFO L78 Accepts]: Start accepts. Automaton has 7660 states and 11940 transitions. Word has length 21 [2022-11-03 03:33:49,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:49,503 INFO L495 AbstractCegarLoop]: Abstraction has 7660 states and 11940 transitions. [2022-11-03 03:33:49,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:33:49,504 INFO L276 IsEmpty]: Start isEmpty. Operand 7660 states and 11940 transitions. [2022-11-03 03:33:49,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-03 03:33:49,506 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:49,506 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:33:49,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 03:33:49,506 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:33:49,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:49,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1686608475, now seen corresponding path program 1 times [2022-11-03 03:33:49,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:49,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501189765] [2022-11-03 03:33:49,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:49,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:49,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:49,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:33:49,836 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:49,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501189765] [2022-11-03 03:33:49,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501189765] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:49,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:49,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:33:49,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724898276] [2022-11-03 03:33:49,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:49,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:33:49,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:49,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:33:49,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:33:49,838 INFO L87 Difference]: Start difference. First operand 7660 states and 11940 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:33:58,140 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 [] [2022-11-03 03:33:58,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:58,747 INFO L93 Difference]: Finished difference Result 8628 states and 13470 transitions. [2022-11-03 03:33:58,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:33:58,748 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-03 03:33:58,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:58,789 INFO L225 Difference]: With dead ends: 8628 [2022-11-03 03:33:58,789 INFO L226 Difference]: Without dead ends: 8624 [2022-11-03 03:33:58,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:33:58,797 INFO L413 NwaCegarLoop]: 2644 mSDtfsCounter, 2759 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2759 SdHoareTripleChecker+Valid, 3111 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:58,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2759 Valid, 3111 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 339 Invalid, 1 Unknown, 0 Unchecked, 8.4s Time] [2022-11-03 03:33:58,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8624 states. [2022-11-03 03:33:59,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8624 to 8622. [2022-11-03 03:33:59,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8622 states, 4771 states have (on average 1.3812617899811361) internal successors, (6590), 5014 states have internal predecessors, (6590), 3431 states have call successors, (3431), 418 states have call predecessors, (3431), 419 states have return successors, (3437), 3354 states have call predecessors, (3437), 3425 states have call successors, (3437) [2022-11-03 03:33:59,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8622 states to 8622 states and 13458 transitions. [2022-11-03 03:33:59,772 INFO L78 Accepts]: Start accepts. Automaton has 8622 states and 13458 transitions. Word has length 20 [2022-11-03 03:33:59,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:59,772 INFO L495 AbstractCegarLoop]: Abstraction has 8622 states and 13458 transitions. [2022-11-03 03:33:59,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:33:59,773 INFO L276 IsEmpty]: Start isEmpty. Operand 8622 states and 13458 transitions. [2022-11-03 03:33:59,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-03 03:33:59,775 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:59,775 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:33:59,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 03:33:59,775 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:33:59,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:59,776 INFO L85 PathProgramCache]: Analyzing trace with hash 744161001, now seen corresponding path program 1 times [2022-11-03 03:33:59,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:59,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623528474] [2022-11-03 03:33:59,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:59,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:59,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:34:00,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:34:00,079 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:34:00,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623528474] [2022-11-03 03:34:00,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623528474] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:34:00,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:34:00,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:34:00,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229440126] [2022-11-03 03:34:00,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:34:00,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:34:00,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:34:00,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:34:00,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:34:00,082 INFO L87 Difference]: Start difference. First operand 8622 states and 13458 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:34:02,713 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 [] [2022-11-03 03:34:06,575 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:34:08,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:34:10,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:34:11,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:34:11,626 INFO L93 Difference]: Finished difference Result 17596 states and 27347 transitions. [2022-11-03 03:34:11,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:34:11,627 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-03 03:34:11,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:34:11,668 INFO L225 Difference]: With dead ends: 17596 [2022-11-03 03:34:11,668 INFO L226 Difference]: Without dead ends: 8975 [2022-11-03 03:34:11,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:34:11,711 INFO L413 NwaCegarLoop]: 2847 mSDtfsCounter, 2623 mSDsluCounter, 1055 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2628 SdHoareTripleChecker+Valid, 3792 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:34:11,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2628 Valid, 3792 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 425 Invalid, 2 Unknown, 0 Unchecked, 10.9s Time] [2022-11-03 03:34:11,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8975 states. [2022-11-03 03:34:12,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8975 to 8932. [2022-11-03 03:34:12,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8932 states, 4933 states have (on average 1.3711737279545915) internal successors, (6764), 5177 states have internal predecessors, (6764), 3498 states have call successors, (3498), 494 states have call predecessors, (3498), 500 states have return successors, (3521), 3426 states have call predecessors, (3521), 3489 states have call successors, (3521) [2022-11-03 03:34:12,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8932 states to 8932 states and 13783 transitions. [2022-11-03 03:34:12,815 INFO L78 Accepts]: Start accepts. Automaton has 8932 states and 13783 transitions. Word has length 21 [2022-11-03 03:34:12,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:34:12,816 INFO L495 AbstractCegarLoop]: Abstraction has 8932 states and 13783 transitions. [2022-11-03 03:34:12,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:34:12,816 INFO L276 IsEmpty]: Start isEmpty. Operand 8932 states and 13783 transitions. [2022-11-03 03:34:12,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-03 03:34:12,818 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:34:12,818 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:34:12,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 03:34:12,819 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:34:12,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:34:12,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1593065246, now seen corresponding path program 1 times [2022-11-03 03:34:12,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:34:12,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591919915] [2022-11-03 03:34:12,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:34:12,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:34:12,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:34:13,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:34:13,127 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:34:13,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591919915] [2022-11-03 03:34:13,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591919915] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:34:13,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:34:13,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:34:13,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049277467] [2022-11-03 03:34:13,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:34:13,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:34:13,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:34:13,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:34:13,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:34:13,130 INFO L87 Difference]: Start difference. First operand 8932 states and 13783 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:34:17,074 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 [] [2022-11-03 03:34:19,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:34:20,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:34:21,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:34:21,412 INFO L93 Difference]: Finished difference Result 8937 states and 13786 transitions. [2022-11-03 03:34:21,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:34:21,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-03 03:34:21,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:34:21,452 INFO L225 Difference]: With dead ends: 8937 [2022-11-03 03:34:21,452 INFO L226 Difference]: Without dead ends: 8926 [2022-11-03 03:34:21,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:34:21,459 INFO L413 NwaCegarLoop]: 2649 mSDtfsCounter, 2763 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2765 SdHoareTripleChecker+Valid, 3139 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:34:21,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2765 Valid, 3139 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 337 Invalid, 1 Unknown, 0 Unchecked, 7.7s Time] [2022-11-03 03:34:21,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8926 states. [2022-11-03 03:34:22,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8926 to 8923. [2022-11-03 03:34:22,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8923 states, 4925 states have (on average 1.3711675126903553) internal successors, (6753), 5168 states have internal predecessors, (6753), 3497 states have call successors, (3497), 494 states have call predecessors, (3497), 500 states have return successors, (3521), 3426 states have call predecessors, (3521), 3489 states have call successors, (3521) [2022-11-03 03:34:22,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8923 states to 8923 states and 13771 transitions. [2022-11-03 03:34:22,433 INFO L78 Accepts]: Start accepts. Automaton has 8923 states and 13771 transitions. Word has length 22 [2022-11-03 03:34:22,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:34:22,433 INFO L495 AbstractCegarLoop]: Abstraction has 8923 states and 13771 transitions. [2022-11-03 03:34:22,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:34:22,434 INFO L276 IsEmpty]: Start isEmpty. Operand 8923 states and 13771 transitions. [2022-11-03 03:34:22,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-03 03:34:22,441 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:34:22,441 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:34:22,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 03:34:22,442 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:34:22,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:34:22,442 INFO L85 PathProgramCache]: Analyzing trace with hash 2104392341, now seen corresponding path program 1 times [2022-11-03 03:34:22,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:34:22,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288768433] [2022-11-03 03:34:22,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:34:22,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:34:22,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:34:22,828 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 03:34:22,828 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:34:22,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288768433] [2022-11-03 03:34:22,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288768433] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:34:22,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:34:22,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:34:22,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470536275] [2022-11-03 03:34:22,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:34:22,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:34:22,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:34:22,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:34:22,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:34:22,831 INFO L87 Difference]: Start difference. First operand 8923 states and 13771 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-03 03:34:26,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:34:32,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:34:34,378 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:34:38,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:34:39,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:34:39,985 INFO L93 Difference]: Finished difference Result 23450 states and 36126 transitions. [2022-11-03 03:34:39,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:34:39,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 59 [2022-11-03 03:34:39,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:34:40,061 INFO L225 Difference]: With dead ends: 23450 [2022-11-03 03:34:40,061 INFO L226 Difference]: Without dead ends: 14528 [2022-11-03 03:34:40,107 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 [2022-11-03 03:34:40,108 INFO L413 NwaCegarLoop]: 3313 mSDtfsCounter, 2730 mSDsluCounter, 2766 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2732 SdHoareTripleChecker+Valid, 5795 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:34:40,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2732 Valid, 5795 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 617 Invalid, 2 Unknown, 0 Unchecked, 16.3s Time] [2022-11-03 03:34:40,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14528 states. [2022-11-03 03:34:41,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14528 to 14469. [2022-11-03 03:34:41,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14469 states, 8010 states have (on average 1.3715355805243445) internal successors, (10986), 8406 states have internal predecessors, (10986), 5629 states have call successors, (5629), 818 states have call predecessors, (5629), 829 states have return successors, (5675), 5511 states have call predecessors, (5675), 5621 states have call successors, (5675) [2022-11-03 03:34:41,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14469 states to 14469 states and 22290 transitions. [2022-11-03 03:34:41,627 INFO L78 Accepts]: Start accepts. Automaton has 14469 states and 22290 transitions. Word has length 59 [2022-11-03 03:34:41,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:34:41,628 INFO L495 AbstractCegarLoop]: Abstraction has 14469 states and 22290 transitions. [2022-11-03 03:34:41,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-03 03:34:41,628 INFO L276 IsEmpty]: Start isEmpty. Operand 14469 states and 22290 transitions. [2022-11-03 03:34:41,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-03 03:34:41,637 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:34:41,638 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 03:34:41,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 03:34:41,638 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:34:41,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:34:41,639 INFO L85 PathProgramCache]: Analyzing trace with hash -361633195, now seen corresponding path program 1 times [2022-11-03 03:34:41,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:34:41,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419529058] [2022-11-03 03:34:41,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:34:41,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:34:41,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:34:41,974 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 03:34:41,974 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:34:41,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419529058] [2022-11-03 03:34:41,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419529058] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:34:41,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:34:41,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:34:41,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151391974] [2022-11-03 03:34:41,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:34:41,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:34:41,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:34:41,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:34:41,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:34:41,978 INFO L87 Difference]: Start difference. First operand 14469 states and 22290 transitions. 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, (10), 2 states have call predecessors, (10), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 03:34:45,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:34:49,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:34:52,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:34:53,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:34:55,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:34:57,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:34:59,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:34:59,833 INFO L93 Difference]: Finished difference Result 38007 states and 58472 transitions. [2022-11-03 03:34:59,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:34:59,834 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, (10), 2 states have call predecessors, (10), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 54 [2022-11-03 03:34:59,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:34:59,961 INFO L225 Difference]: With dead ends: 38007 [2022-11-03 03:34:59,961 INFO L226 Difference]: Without dead ends: 23539 [2022-11-03 03:35:00,044 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 [2022-11-03 03:35:00,045 INFO L413 NwaCegarLoop]: 3423 mSDtfsCounter, 2734 mSDsluCounter, 2757 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2736 SdHoareTripleChecker+Valid, 5899 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:35:00,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2736 Valid, 5899 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 629 Invalid, 3 Unknown, 0 Unchecked, 16.1s Time] [2022-11-03 03:35:00,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23539 states. [2022-11-03 03:35:01,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23539 to 23508. [2022-11-03 03:35:01,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23508 states, 13134 states have (on average 1.375742348104157) internal successors, (18069), 13784 states have internal predecessors, (18069), 8991 states have call successors, (8991), 1356 states have call predecessors, (8991), 1382 states have return successors, (9085), 8784 states have call predecessors, (9085), 8983 states have call successors, (9085) [2022-11-03 03:35:02,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23508 states to 23508 states and 36145 transitions. [2022-11-03 03:35:02,052 INFO L78 Accepts]: Start accepts. Automaton has 23508 states and 36145 transitions. Word has length 54 [2022-11-03 03:35:02,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:35:02,052 INFO L495 AbstractCegarLoop]: Abstraction has 23508 states and 36145 transitions. [2022-11-03 03:35:02,052 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, (10), 2 states have call predecessors, (10), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 03:35:02,052 INFO L276 IsEmpty]: Start isEmpty. Operand 23508 states and 36145 transitions. [2022-11-03 03:35:02,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-03 03:35:02,065 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:35:02,065 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:35:02,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 03:35:02,065 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:35:02,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:35:02,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1859014767, now seen corresponding path program 1 times [2022-11-03 03:35:02,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:35:02,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708976047] [2022-11-03 03:35:02,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:35:02,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:35:02,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:35:02,824 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 03:35:02,824 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:35:02,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708976047] [2022-11-03 03:35:02,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708976047] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:35:02,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:35:02,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:35:02,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579092380] [2022-11-03 03:35:02,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:35:02,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:35:02,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:35:02,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:35:02,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:35:02,826 INFO L87 Difference]: Start difference. First operand 23508 states and 36145 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 03:35:06,912 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:35:11,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:35:14,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:35:17,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:35:18,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:35:18,859 INFO L93 Difference]: Finished difference Result 25066 states and 38087 transitions. [2022-11-03 03:35:18,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:35:18,859 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 51 [2022-11-03 03:35:18,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:35:18,959 INFO L225 Difference]: With dead ends: 25066 [2022-11-03 03:35:18,959 INFO L226 Difference]: Without dead ends: 23385 [2022-11-03 03:35:18,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:35:18,976 INFO L413 NwaCegarLoop]: 2561 mSDtfsCounter, 229 mSDsluCounter, 2633 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 4918 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:35:18,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 4918 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 589 Invalid, 3 Unknown, 0 Unchecked, 14.7s Time] [2022-11-03 03:35:18,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23385 states. [2022-11-03 03:35:20,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23385 to 23359. [2022-11-03 03:35:20,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23359 states, 13053 states have (on average 1.3766950126407722) internal successors, (17970), 13703 states have internal predecessors, (17970), 8960 states have call successors, (8960), 1344 states have call predecessors, (8960), 1345 states have return successors, (8996), 8728 states have call predecessors, (8996), 8956 states have call successors, (8996) [2022-11-03 03:35:21,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23359 states to 23359 states and 35926 transitions. [2022-11-03 03:35:21,020 INFO L78 Accepts]: Start accepts. Automaton has 23359 states and 35926 transitions. Word has length 51 [2022-11-03 03:35:21,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:35:21,021 INFO L495 AbstractCegarLoop]: Abstraction has 23359 states and 35926 transitions. [2022-11-03 03:35:21,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 03:35:21,021 INFO L276 IsEmpty]: Start isEmpty. Operand 23359 states and 35926 transitions. [2022-11-03 03:35:21,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-03 03:35:21,059 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:35:21,060 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:35:21,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 03:35:21,060 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:35:21,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:35:21,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1316415905, now seen corresponding path program 1 times [2022-11-03 03:35:21,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:35:21,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459030345] [2022-11-03 03:35:21,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:35:21,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:35:21,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:35:21,726 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 03:35:21,726 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:35:21,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459030345] [2022-11-03 03:35:21,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459030345] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:35:21,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:35:21,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:35:21,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712897959] [2022-11-03 03:35:21,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:35:21,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:35:21,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:35:21,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:35:21,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:35:21,728 INFO L87 Difference]: Start difference. First operand 23359 states and 35926 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-03 03:35:25,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:35:28,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:35:33,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:35:36,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:35:38,507 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:35:39,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:35:41,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:35:44,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:35:46,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:35:48,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:35:50,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:35:50,893 INFO L93 Difference]: Finished difference Result 53066 states and 81615 transitions. [2022-11-03 03:35:50,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:35:50,893 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 84 [2022-11-03 03:35:50,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:35:50,987 INFO L225 Difference]: With dead ends: 53066 [2022-11-03 03:35:50,988 INFO L226 Difference]: Without dead ends: 32294 [2022-11-03 03:35:51,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:35:51,061 INFO L413 NwaCegarLoop]: 4623 mSDtfsCounter, 2725 mSDsluCounter, 5504 mSDsCounter, 0 mSdLazyCounter, 1099 mSolverCounterSat, 7 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2730 SdHoareTripleChecker+Valid, 9565 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1099 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:35:51,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2730 Valid, 9565 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1099 Invalid, 5 Unknown, 0 Unchecked, 26.6s Time] [2022-11-03 03:35:51,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32294 states. [2022-11-03 03:35:53,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32294 to 32259. [2022-11-03 03:35:53,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32259 states, 18103 states have (on average 1.3804894216428216) internal successors, (24991), 19003 states have internal predecessors, (24991), 12291 states have call successors, (12291), 1861 states have call predecessors, (12291), 1864 states have return successors, (12359), 11969 states have call predecessors, (12359), 12287 states have call successors, (12359) [2022-11-03 03:35:53,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32259 states to 32259 states and 49641 transitions. [2022-11-03 03:35:53,933 INFO L78 Accepts]: Start accepts. Automaton has 32259 states and 49641 transitions. Word has length 84 [2022-11-03 03:35:53,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:35:53,933 INFO L495 AbstractCegarLoop]: Abstraction has 32259 states and 49641 transitions. [2022-11-03 03:35:53,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-03 03:35:53,933 INFO L276 IsEmpty]: Start isEmpty. Operand 32259 states and 49641 transitions. [2022-11-03 03:35:53,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-03 03:35:53,986 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:35:53,986 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:35:53,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-03 03:35:53,987 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:35:53,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:35:53,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1401237299, now seen corresponding path program 1 times [2022-11-03 03:35:53,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:35:53,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733736323] [2022-11-03 03:35:53,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:35:53,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:35:54,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:35:55,106 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 03:35:55,107 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:35:55,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733736323] [2022-11-03 03:35:55,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733736323] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:35:55,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:35:55,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 03:35:55,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905719482] [2022-11-03 03:35:55,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:35:55,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:35:55,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:35:55,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:35:55,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:35:55,109 INFO L87 Difference]: Start difference. First operand 32259 states and 49641 transitions. Second operand has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 4 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-03 03:35:59,263 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:36:02,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:36:12,378 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:36:13,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:36:14,995 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:36:17,914 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:36:19,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:36:20,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:36:22,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:36:24,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:36:26,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:36:30,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:36:32,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:36:34,914 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:36:38,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:36:38,827 INFO L93 Difference]: Finished difference Result 63265 states and 97927 transitions. [2022-11-03 03:36:38,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:36:38,828 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 4 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 86 [2022-11-03 03:36:38,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:36:39,010 INFO L225 Difference]: With dead ends: 63265 [2022-11-03 03:36:39,010 INFO L226 Difference]: Without dead ends: 31007 [2022-11-03 03:36:39,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-03 03:36:39,097 INFO L413 NwaCegarLoop]: 2412 mSDtfsCounter, 19 mSDsluCounter, 13439 mSDsCounter, 0 mSdLazyCounter, 1836 mSolverCounterSat, 24 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 14442 SdHoareTripleChecker+Invalid, 1866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1836 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:36:39,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 14442 Invalid, 1866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1836 Invalid, 6 Unknown, 0 Unchecked, 40.7s Time] [2022-11-03 03:36:39,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31007 states. [2022-11-03 03:36:41,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31007 to 31007. [2022-11-03 03:36:41,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31007 states, 17555 states have (on average 1.3768157220165196) internal successors, (24170), 18272 states have internal predecessors, (24170), 11847 states have call successors, (11847), 1600 states have call predecessors, (11847), 1604 states have return successors, (11917), 11696 states have call predecessors, (11917), 11845 states have call successors, (11917) [2022-11-03 03:36:41,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31007 states to 31007 states and 47934 transitions. [2022-11-03 03:36:41,890 INFO L78 Accepts]: Start accepts. Automaton has 31007 states and 47934 transitions. Word has length 86 [2022-11-03 03:36:41,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:36:41,891 INFO L495 AbstractCegarLoop]: Abstraction has 31007 states and 47934 transitions. [2022-11-03 03:36:41,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 4 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-03 03:36:41,892 INFO L276 IsEmpty]: Start isEmpty. Operand 31007 states and 47934 transitions. [2022-11-03 03:36:41,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-03 03:36:41,941 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:36:41,942 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:36:41,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-03 03:36:41,942 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:36:41,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:36:41,943 INFO L85 PathProgramCache]: Analyzing trace with hash 799567101, now seen corresponding path program 1 times [2022-11-03 03:36:41,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:36:41,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206684017] [2022-11-03 03:36:41,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:36:41,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:36:42,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:36:42,352 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-11-03 03:36:42,353 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:36:42,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206684017] [2022-11-03 03:36:42,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206684017] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:36:42,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:36:42,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:36:42,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427133865] [2022-11-03 03:36:42,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:36:42,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:36:42,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:36:42,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:36:42,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:36:42,355 INFO L87 Difference]: Start difference. First operand 31007 states and 47934 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 03:36:45,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:36:48,418 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:36:56,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:36:57,560 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:36:59,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:37:02,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:37:04,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:37:06,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:37:06,632 INFO L93 Difference]: Finished difference Result 73205 states and 112168 transitions. [2022-11-03 03:37:06,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:37:06,632 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 132 [2022-11-03 03:37:06,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:37:06,764 INFO L225 Difference]: With dead ends: 73205 [2022-11-03 03:37:06,764 INFO L226 Difference]: Without dead ends: 42199 [2022-11-03 03:37:06,871 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 [2022-11-03 03:37:06,872 INFO L413 NwaCegarLoop]: 3039 mSDtfsCounter, 1575 mSDsluCounter, 2701 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1575 SdHoareTripleChecker+Valid, 5465 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:37:06,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1575 Valid, 5465 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 632 Invalid, 4 Unknown, 0 Unchecked, 21.3s Time] [2022-11-03 03:37:06,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42199 states. [2022-11-03 03:37:10,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42199 to 42196. [2022-11-03 03:37:10,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42196 states, 24894 states have (on average 1.3896922953322086) internal successors, (34595), 25753 states have internal predecessors, (34595), 14771 states have call successors, (14771), 2526 states have call predecessors, (14771), 2530 states have return successors, (14851), 14541 states have call predecessors, (14851), 14769 states have call successors, (14851) [2022-11-03 03:37:10,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42196 states to 42196 states and 64217 transitions. [2022-11-03 03:37:10,669 INFO L78 Accepts]: Start accepts. Automaton has 42196 states and 64217 transitions. Word has length 132 [2022-11-03 03:37:10,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:37:10,669 INFO L495 AbstractCegarLoop]: Abstraction has 42196 states and 64217 transitions. [2022-11-03 03:37:10,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 03:37:10,670 INFO L276 IsEmpty]: Start isEmpty. Operand 42196 states and 64217 transitions. [2022-11-03 03:37:10,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-03 03:37:10,737 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:37:10,737 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:37:10,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-03 03:37:10,737 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:37:10,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:37:10,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1581345782, now seen corresponding path program 1 times [2022-11-03 03:37:10,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:37:10,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329044589] [2022-11-03 03:37:10,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:37:10,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:37:10,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:37:11,700 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-11-03 03:37:11,701 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:37:11,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329044589] [2022-11-03 03:37:11,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329044589] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:37:11,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:37:11,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:37:11,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784100127] [2022-11-03 03:37:11,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:37:11,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:37:11,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:37:11,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:37:11,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:37:11,705 INFO L87 Difference]: Start difference. First operand 42196 states and 64217 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 03:37:17,007 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 [] [2022-11-03 03:37:19,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:37:27,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:37:29,422 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:37:32,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:37:35,084 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 [] [2022-11-03 03:37:37,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:37:37,385 INFO L93 Difference]: Finished difference Result 96593 states and 146505 transitions. [2022-11-03 03:37:37,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:37:37,385 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 143 [2022-11-03 03:37:37,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:37:37,555 INFO L225 Difference]: With dead ends: 96593 [2022-11-03 03:37:37,555 INFO L226 Difference]: Without dead ends: 55209 [2022-11-03 03:37:37,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:37:37,684 INFO L413 NwaCegarLoop]: 3530 mSDtfsCounter, 2592 mSDsluCounter, 2699 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 605 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2592 SdHoareTripleChecker+Valid, 5955 SdHoareTripleChecker+Invalid, 1338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 605 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:37:37,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2592 Valid, 5955 Invalid, 1338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [605 Valid, 728 Invalid, 5 Unknown, 0 Unchecked, 22.1s Time] [2022-11-03 03:37:37,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55209 states. [2022-11-03 03:37:41,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55209 to 55208. [2022-11-03 03:37:41,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55208 states, 33230 states have (on average 1.395636473066506) internal successors, (46377), 34279 states have internal predecessors, (46377), 18465 states have call successors, (18465), 3508 states have call predecessors, (18465), 3512 states have return successors, (18557), 18151 states have call predecessors, (18557), 18463 states have call successors, (18557) [2022-11-03 03:37:41,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55208 states to 55208 states and 83399 transitions. [2022-11-03 03:37:41,800 INFO L78 Accepts]: Start accepts. Automaton has 55208 states and 83399 transitions. Word has length 143 [2022-11-03 03:37:41,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:37:41,800 INFO L495 AbstractCegarLoop]: Abstraction has 55208 states and 83399 transitions. [2022-11-03 03:37:41,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 03:37:41,801 INFO L276 IsEmpty]: Start isEmpty. Operand 55208 states and 83399 transitions. [2022-11-03 03:37:41,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-03 03:37:41,899 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:37:41,899 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:37:41,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-03 03:37:41,900 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:37:41,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:37:41,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1867976798, now seen corresponding path program 1 times [2022-11-03 03:37:41,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:37:41,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583029477] [2022-11-03 03:37:41,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:37:41,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:37:42,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:37:42,759 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2022-11-03 03:37:42,759 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:37:42,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583029477] [2022-11-03 03:37:42,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583029477] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:37:42,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:37:42,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:37:42,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546938616] [2022-11-03 03:37:42,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:37:42,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:37:42,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:37:42,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:37:42,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:37:42,762 INFO L87 Difference]: Start difference. First operand 55208 states and 83399 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 03:37:51,899 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 [] [2022-11-03 03:37:53,954 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:37:55,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:37:58,521 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 [] [2022-11-03 03:38:01,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:38:01,342 INFO L93 Difference]: Finished difference Result 55210 states and 83400 transitions. [2022-11-03 03:38:01,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:38:01,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 155 [2022-11-03 03:38:01,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:38:01,645 INFO L225 Difference]: With dead ends: 55210 [2022-11-03 03:38:01,646 INFO L226 Difference]: Without dead ends: 55207 [2022-11-03 03:38:01,665 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 [2022-11-03 03:38:01,666 INFO L413 NwaCegarLoop]: 2437 mSDtfsCounter, 3 mSDsluCounter, 2712 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 4870 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:38:01,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 4870 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 568 Invalid, 2 Unknown, 0 Unchecked, 15.6s Time] [2022-11-03 03:38:01,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55207 states. [2022-11-03 03:38:05,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55207 to 55207. [2022-11-03 03:38:05,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55207 states, 33230 states have (on average 1.395034607282576) internal successors, (46357), 34278 states have internal predecessors, (46357), 18464 states have call successors, (18464), 3508 states have call predecessors, (18464), 3512 states have return successors, (18557), 18151 states have call predecessors, (18557), 18463 states have call successors, (18557) [2022-11-03 03:38:05,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55207 states to 55207 states and 83378 transitions. [2022-11-03 03:38:05,972 INFO L78 Accepts]: Start accepts. Automaton has 55207 states and 83378 transitions. Word has length 155 [2022-11-03 03:38:05,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:38:05,973 INFO L495 AbstractCegarLoop]: Abstraction has 55207 states and 83378 transitions. [2022-11-03 03:38:05,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 03:38:05,974 INFO L276 IsEmpty]: Start isEmpty. Operand 55207 states and 83378 transitions. [2022-11-03 03:38:06,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1303 [2022-11-03 03:38:06,302 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:38:06,303 INFO L195 NwaCegarLoop]: trace histogram [228, 65, 65, 65, 65, 65, 65, 65, 65, 17, 14, 14, 14, 14, 14, 14, 14, 14, 8, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:38:06,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-03 03:38:06,303 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:38:06,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:38:06,304 INFO L85 PathProgramCache]: Analyzing trace with hash 799191817, now seen corresponding path program 1 times [2022-11-03 03:38:06,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:38:06,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569186930] [2022-11-03 03:38:06,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:38:06,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:38:06,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:38:10,617 INFO L134 CoverageAnalysis]: Checked inductivity of 65240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 65240 trivial. 0 not checked. [2022-11-03 03:38:10,617 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:38:10,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569186930] [2022-11-03 03:38:10,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569186930] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:38:10,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:38:10,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:38:10,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722072594] [2022-11-03 03:38:10,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:38:10,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:38:10,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:38:10,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:38:10,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:38:10,622 INFO L87 Difference]: Start difference. First operand 55207 states and 83378 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 3 states have call successors, (118), 3 states have call predecessors, (118), 1 states have return successors, (115), 2 states have call predecessors, (115), 2 states have call successors, (115) [2022-11-03 03:38:15,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:38:17,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:38:19,807 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:38:21,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:38:23,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:38:23,692 INFO L93 Difference]: Finished difference Result 55235 states and 83408 transitions. [2022-11-03 03:38:23,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:38:23,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 3 states have call successors, (118), 3 states have call predecessors, (118), 1 states have return successors, (115), 2 states have call predecessors, (115), 2 states have call successors, (115) Word has length 1302 [2022-11-03 03:38:23,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:38:23,697 INFO L225 Difference]: With dead ends: 55235 [2022-11-03 03:38:23,697 INFO L226 Difference]: Without dead ends: 0 [2022-11-03 03:38:23,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:38:23,842 INFO L413 NwaCegarLoop]: 2583 mSDtfsCounter, 2541 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2541 SdHoareTripleChecker+Valid, 3057 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:38:23,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2541 Valid, 3057 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 331 Invalid, 2 Unknown, 0 Unchecked, 10.3s Time] [2022-11-03 03:38:23,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-03 03:38:23,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-03 03:38:23,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:38:23,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-03 03:38:23,851 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1302 [2022-11-03 03:38:23,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:38:23,852 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-03 03:38:23,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 3 states have call successors, (118), 3 states have call predecessors, (118), 1 states have return successors, (115), 2 states have call predecessors, (115), 2 states have call successors, (115) [2022-11-03 03:38:23,852 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-03 03:38:23,852 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-03 03:38:23,855 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 03:38:23,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-03 03:38:23,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.