./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--lm78.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_029aec0b-e6c9-4470-97c9-65be6024c694/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_029aec0b-e6c9-4470-97c9-65be6024c694/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_029aec0b-e6c9-4470-97c9-65be6024c694/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_029aec0b-e6c9-4470-97c9-65be6024c694/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--lm78.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_029aec0b-e6c9-4470-97c9-65be6024c694/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_029aec0b-e6c9-4470-97c9-65be6024c694/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 f101c9f670424051cd8065375abf3569c944bebed10faf12f958054dc911cacc --- 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 01:59:27,993 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:59:27,996 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:59:28,047 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:59:28,048 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:59:28,052 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:59:28,055 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:59:28,057 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:59:28,059 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:59:28,068 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:59:28,069 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:59:28,070 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:59:28,070 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:59:28,071 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:59:28,072 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:59:28,074 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:59:28,076 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:59:28,077 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:59:28,078 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:59:28,085 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:59:28,087 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:59:28,089 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:59:28,092 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:59:28,093 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:59:28,102 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:59:28,102 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:59:28,102 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:59:28,104 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:59:28,106 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:59:28,108 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:59:28,108 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:59:28,109 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:59:28,111 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:59:28,113 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:59:28,114 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:59:28,115 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:59:28,115 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:59:28,116 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:59:28,116 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:59:28,117 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:59:28,117 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:59:28,118 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_029aec0b-e6c9-4470-97c9-65be6024c694/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 01:59:28,162 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:59:28,162 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:59:28,163 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:59:28,163 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:59:28,164 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:59:28,164 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:59:28,164 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:59:28,164 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:59:28,165 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:59:28,165 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:59:28,166 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:59:28,166 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:59:28,167 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:59:28,167 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:59:28,167 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:59:28,167 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:59:28,167 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:59:28,168 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:59:28,168 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:59:28,169 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:59:28,169 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:59:28,169 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:59:28,169 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:59:28,170 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:59:28,170 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:59:28,170 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:59:28,170 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:59:28,170 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:59:28,171 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:59:28,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:59:28,171 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:59:28,172 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:59:28,172 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:59:28,172 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:59:28,172 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:59:28,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:59:28,173 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:59:28,173 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:59:28,173 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_029aec0b-e6c9-4470-97c9-65be6024c694/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_029aec0b-e6c9-4470-97c9-65be6024c694/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f101c9f670424051cd8065375abf3569c944bebed10faf12f958054dc911cacc [2022-11-03 01:59:28,479 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:59:28,504 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:59:28,507 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:59:28,509 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:59:28,510 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:59:28,511 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_029aec0b-e6c9-4470-97c9-65be6024c694/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--lm78.ko-entry_point.cil.out.i [2022-11-03 01:59:28,591 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_029aec0b-e6c9-4470-97c9-65be6024c694/bin/utaipan-7li7fVZpFI/data/18e7be458/9f0fc50919774cd0aa1da93aedb1adc5/FLAGc8d7eca15 [2022-11-03 01:59:29,461 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:59:29,462 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_029aec0b-e6c9-4470-97c9-65be6024c694/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--lm78.ko-entry_point.cil.out.i [2022-11-03 01:59:29,526 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_029aec0b-e6c9-4470-97c9-65be6024c694/bin/utaipan-7li7fVZpFI/data/18e7be458/9f0fc50919774cd0aa1da93aedb1adc5/FLAGc8d7eca15 [2022-11-03 01:59:29,998 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_029aec0b-e6c9-4470-97c9-65be6024c694/bin/utaipan-7li7fVZpFI/data/18e7be458/9f0fc50919774cd0aa1da93aedb1adc5 [2022-11-03 01:59:30,002 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:59:30,004 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:59:30,005 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:59:30,005 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:59:30,009 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:59:30,010 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:59:30" (1/1) ... [2022-11-03 01:59:30,011 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22fef2a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:59:30, skipping insertion in model container [2022-11-03 01:59:30,011 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:59:30" (1/1) ... [2022-11-03 01:59:30,018 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:59:30,137 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:59:31,527 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_029aec0b-e6c9-4470-97c9-65be6024c694/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--lm78.ko-entry_point.cil.out.i[173663,173676] [2022-11-03 01:59:31,643 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:59:31,690 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:59:32,026 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_029aec0b-e6c9-4470-97c9-65be6024c694/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--lm78.ko-entry_point.cil.out.i[173663,173676] [2022-11-03 01:59:32,037 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:59:32,243 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:59:32,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:59:32 WrapperNode [2022-11-03 01:59:32,243 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:59:32,244 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:59:32,245 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:59:32,245 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:59:32,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:59:32" (1/1) ... [2022-11-03 01:59:32,350 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:59:32" (1/1) ... [2022-11-03 01:59:32,519 INFO L138 Inliner]: procedures = 186, calls = 1777, calls flagged for inlining = 80, calls inlined = 77, statements flattened = 4709 [2022-11-03 01:59:32,520 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:59:32,521 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:59:32,521 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:59:32,522 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:59:32,532 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:59:32" (1/1) ... [2022-11-03 01:59:32,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:59:32" (1/1) ... [2022-11-03 01:59:32,569 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:59:32" (1/1) ... [2022-11-03 01:59:32,569 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:59:32" (1/1) ... [2022-11-03 01:59:32,743 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:59:32" (1/1) ... [2022-11-03 01:59:32,762 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:59:32" (1/1) ... [2022-11-03 01:59:32,779 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:59:32" (1/1) ... [2022-11-03 01:59:32,791 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:59:32" (1/1) ... [2022-11-03 01:59:32,816 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:59:32,817 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:59:32,817 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:59:32,817 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:59:32,818 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:59:32" (1/1) ... [2022-11-03 01:59:32,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:59:32,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_029aec0b-e6c9-4470-97c9-65be6024c694/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:59:32,848 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_029aec0b-e6c9-4470-97c9-65be6024c694/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:59:32,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_029aec0b-e6c9-4470-97c9-65be6024c694/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:59:32,903 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan [2022-11-03 01:59:32,904 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan [2022-11-03 01:59:32,904 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-11-03 01:59:32,904 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-11-03 01:59:32,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 01:59:32,904 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_max [2022-11-03 01:59:32,904 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_max [2022-11-03 01:59:32,905 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 01:59:32,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 01:59:32,905 INFO L130 BoogieDeclarations]: Found specification of procedure set_in_max [2022-11-03 01:59:32,905 INFO L138 BoogieDeclarations]: Found implementation of procedure set_in_max [2022-11-03 01:59:32,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 01:59:32,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 01:59:32,906 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 01:59:32,906 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_TO_REG [2022-11-03 01:59:32,906 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_TO_REG [2022-11-03 01:59:32,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 01:59:32,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 01:59:32,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_lm78_data [2022-11-03 01:59:32,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_lm78_data [2022-11-03 01:59:32,907 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_lm78_data [2022-11-03 01:59:32,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_lm78_data [2022-11-03 01:59:32,907 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_div [2022-11-03 01:59:32,907 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_div [2022-11-03 01:59:32,907 INFO L130 BoogieDeclarations]: Found specification of procedure set_fan_div [2022-11-03 01:59:32,908 INFO L138 BoogieDeclarations]: Found implementation of procedure set_fan_div [2022-11-03 01:59:32,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 01:59:32,908 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 01:59:32,909 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 01:59:32,909 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 01:59:32,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 01:59:32,909 INFO L130 BoogieDeclarations]: Found specification of procedure lm78_read_value [2022-11-03 01:59:32,910 INFO L138 BoogieDeclarations]: Found implementation of procedure lm78_read_value [2022-11-03 01:59:32,910 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 01:59:32,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 01:59:32,910 INFO L130 BoogieDeclarations]: Found specification of procedure IN_TO_REG [2022-11-03 01:59:32,911 INFO L138 BoogieDeclarations]: Found implementation of procedure IN_TO_REG [2022-11-03 01:59:32,911 INFO L130 BoogieDeclarations]: Found specification of procedure set_in_min [2022-11-03 01:59:32,911 INFO L138 BoogieDeclarations]: Found implementation of procedure set_in_min [2022-11-03 01:59:32,911 INFO L130 BoogieDeclarations]: Found specification of procedure lm78_isa_unregister [2022-11-03 01:59:32,911 INFO L138 BoogieDeclarations]: Found implementation of procedure lm78_isa_unregister [2022-11-03 01:59:32,911 INFO L130 BoogieDeclarations]: Found specification of procedure lm78_i2c_detect [2022-11-03 01:59:32,912 INFO L138 BoogieDeclarations]: Found implementation of procedure lm78_i2c_detect [2022-11-03 01:59:32,912 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-03 01:59:32,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-03 01:59:32,912 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 01:59:32,912 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 01:59:32,913 INFO L130 BoogieDeclarations]: Found specification of procedure TEMP_TO_REG [2022-11-03 01:59:32,914 INFO L138 BoogieDeclarations]: Found implementation of procedure TEMP_TO_REG [2022-11-03 01:59:32,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 01:59:32,915 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-03 01:59:32,916 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-03 01:59:32,916 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_min [2022-11-03 01:59:32,916 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_min [2022-11-03 01:59:32,917 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-03 01:59:32,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-03 01:59:32,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:59:32,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 01:59:32,918 INFO L130 BoogieDeclarations]: Found specification of procedure set_fan_min [2022-11-03 01:59:32,918 INFO L138 BoogieDeclarations]: Found implementation of procedure set_fan_min [2022-11-03 01:59:32,918 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_min [2022-11-03 01:59:32,918 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_min [2022-11-03 01:59:32,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 01:59:32,918 INFO L130 BoogieDeclarations]: Found specification of procedure show_alarm [2022-11-03 01:59:32,919 INFO L138 BoogieDeclarations]: Found implementation of procedure show_alarm [2022-11-03 01:59:32,919 INFO L130 BoogieDeclarations]: Found specification of procedure lm78_write_value [2022-11-03 01:59:32,919 INFO L138 BoogieDeclarations]: Found implementation of procedure lm78_write_value [2022-11-03 01:59:32,919 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_byte_data [2022-11-03 01:59:32,919 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_byte_data [2022-11-03 01:59:32,919 INFO L130 BoogieDeclarations]: Found specification of procedure show_in [2022-11-03 01:59:32,919 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in [2022-11-03 01:59:32,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 01:59:32,921 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 01:59:32,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 01:59:32,921 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtol [2022-11-03 01:59:32,921 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtol [2022-11-03 01:59:32,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 01:59:32,921 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtoul [2022-11-03 01:59:32,921 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtoul [2022-11-03 01:59:32,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 01:59:32,922 INFO L130 BoogieDeclarations]: Found specification of procedure lm78_update_device [2022-11-03 01:59:32,922 INFO L138 BoogieDeclarations]: Found implementation of procedure lm78_update_device [2022-11-03 01:59:32,923 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_FROM_REG [2022-11-03 01:59:32,923 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_FROM_REG [2022-11-03 01:59:32,923 INFO L130 BoogieDeclarations]: Found specification of procedure TEMP_FROM_REG [2022-11-03 01:59:32,923 INFO L138 BoogieDeclarations]: Found implementation of procedure TEMP_FROM_REG [2022-11-03 01:59:32,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 01:59:32,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:59:32,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:59:32,925 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-03 01:59:32,925 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-03 01:59:33,644 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:59:33,649 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:59:33,856 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 01:59:48,750 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:59:49,260 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:59:49,261 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 01:59:49,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:59:49 BoogieIcfgContainer [2022-11-03 01:59:49,267 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:59:49,270 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:59:49,270 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:59:49,274 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:59:49,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:59:30" (1/3) ... [2022-11-03 01:59:49,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3216831d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:59:49, skipping insertion in model container [2022-11-03 01:59:49,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:59:32" (2/3) ... [2022-11-03 01:59:49,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3216831d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:59:49, skipping insertion in model container [2022-11-03 01:59:49,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:59:49" (3/3) ... [2022-11-03 01:59:49,277 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--lm78.ko-entry_point.cil.out.i [2022-11-03 01:59:49,296 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:59:49,297 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 01:59:49,441 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:59:49,448 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;@59ff1da5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:59:49,448 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 01:59:49,458 INFO L276 IsEmpty]: Start isEmpty. Operand has 1230 states, 777 states have (on average 1.4234234234234233) internal successors, (1106), 833 states have internal predecessors, (1106), 413 states have call successors, (413), 39 states have call predecessors, (413), 38 states have return successors, (364), 364 states have call predecessors, (364), 364 states have call successors, (364) [2022-11-03 01:59:49,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1555 [2022-11-03 01:59:49,587 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:59:49,590 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 119, 119, 119, 119, 119, 119, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:59:49,591 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:59:49,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:59:49,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1445278343, now seen corresponding path program 1 times [2022-11-03 01:59:49,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:59:49,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269944619] [2022-11-03 01:59:49,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:59:49,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:59:50,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:59:54,035 INFO L134 CoverageAnalysis]: Checked inductivity of 70840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70840 trivial. 0 not checked. [2022-11-03 01:59:54,035 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:59:54,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269944619] [2022-11-03 01:59:54,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269944619] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:59:54,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:59:54,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:59:54,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638164399] [2022-11-03 01:59:54,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:59:54,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:59:54,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:59:54,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:59:54,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:59:54,090 INFO L87 Difference]: Start difference. First operand has 1230 states, 777 states have (on average 1.4234234234234233) internal successors, (1106), 833 states have internal predecessors, (1106), 413 states have call successors, (413), 39 states have call predecessors, (413), 38 states have return successors, (364), 364 states have call predecessors, (364), 364 states have call successors, (364) Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 2 states have call successors, (146), 2 states have call predecessors, (146), 1 states have return successors, (143), 2 states have call predecessors, (143), 2 states have call successors, (143) [2022-11-03 01:59:56,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:59:58,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 01:59:59,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:59:59,859 INFO L93 Difference]: Finished difference Result 3106 states and 4964 transitions. [2022-11-03 01:59:59,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:59:59,862 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 2 states have call successors, (146), 2 states have call predecessors, (146), 1 states have return successors, (143), 2 states have call predecessors, (143), 2 states have call successors, (143) Word has length 1554 [2022-11-03 01:59:59,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:59:59,909 INFO L225 Difference]: With dead ends: 3106 [2022-11-03 01:59:59,909 INFO L226 Difference]: Without dead ends: 2057 [2022-11-03 01:59:59,925 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 01:59:59,929 INFO L413 NwaCegarLoop]: 2018 mSDtfsCounter, 1422 mSDsluCounter, 1868 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1424 SdHoareTripleChecker+Valid, 3813 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:59:59,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1424 Valid, 3813 Invalid, 160 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 157 Invalid, 2 Unknown, 0 Unchecked, 5.4s Time] [2022-11-03 01:59:59,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2057 states. [2022-11-03 02:00:00,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2057 to 2043. [2022-11-03 02:00:00,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2043 states, 1391 states have (on average 1.3953989935298345) internal successors, (1941), 1399 states have internal predecessors, (1941), 579 states have call successors, (579), 73 states have call predecessors, (579), 72 states have return successors, (574), 572 states have call predecessors, (574), 574 states have call successors, (574) [2022-11-03 02:00:00,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2043 states to 2043 states and 3094 transitions. [2022-11-03 02:00:00,220 INFO L78 Accepts]: Start accepts. Automaton has 2043 states and 3094 transitions. Word has length 1554 [2022-11-03 02:00:00,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:00:00,229 INFO L495 AbstractCegarLoop]: Abstraction has 2043 states and 3094 transitions. [2022-11-03 02:00:00,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 2 states have call successors, (146), 2 states have call predecessors, (146), 1 states have return successors, (143), 2 states have call predecessors, (143), 2 states have call successors, (143) [2022-11-03 02:00:00,231 INFO L276 IsEmpty]: Start isEmpty. Operand 2043 states and 3094 transitions. [2022-11-03 02:00:00,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1556 [2022-11-03 02:00:00,368 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:00:00,369 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 119, 119, 119, 119, 119, 119, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:00:00,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:00:00,370 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:00:00,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:00:00,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1028928318, now seen corresponding path program 1 times [2022-11-03 02:00:00,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:00:00,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838439437] [2022-11-03 02:00:00,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:00:00,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:00:01,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:00:02,769 INFO L134 CoverageAnalysis]: Checked inductivity of 70840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70840 trivial. 0 not checked. [2022-11-03 02:00:02,770 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:00:02,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838439437] [2022-11-03 02:00:02,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838439437] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:00:02,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:00:02,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:00:02,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513849444] [2022-11-03 02:00:02,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:00:02,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:00:02,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:00:02,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:00:02,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:00:02,782 INFO L87 Difference]: Start difference. First operand 2043 states and 3094 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 2 states have call successors, (147), 2 states have call predecessors, (147), 1 states have return successors, (143), 2 states have call predecessors, (143), 2 states have call successors, (143) [2022-11-03 02:00:04,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:00:07,008 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 02:00:07,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:00:07,790 INFO L93 Difference]: Finished difference Result 5544 states and 8410 transitions. [2022-11-03 02:00:07,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:00:07,791 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 2 states have call successors, (147), 2 states have call predecessors, (147), 1 states have return successors, (143), 2 states have call predecessors, (143), 2 states have call successors, (143) Word has length 1555 [2022-11-03 02:00:07,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:00:07,816 INFO L225 Difference]: With dead ends: 5544 [2022-11-03 02:00:07,817 INFO L226 Difference]: Without dead ends: 3785 [2022-11-03 02:00:07,825 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 02:00:07,826 INFO L413 NwaCegarLoop]: 1929 mSDtfsCounter, 1327 mSDsluCounter, 1767 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1329 SdHoareTripleChecker+Valid, 3623 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:00:07,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1329 Valid, 3623 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 157 Invalid, 2 Unknown, 0 Unchecked, 4.8s Time] [2022-11-03 02:00:07,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3785 states. [2022-11-03 02:00:08,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3785 to 3771. [2022-11-03 02:00:08,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3771 states, 2619 states have (on average 1.4165712103856434) internal successors, (3710), 2633 states have internal predecessors, (3710), 1009 states have call successors, (1009), 143 states have call predecessors, (1009), 142 states have return successors, (1004), 998 states have call predecessors, (1004), 1004 states have call successors, (1004) [2022-11-03 02:00:08,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3771 states to 3771 states and 5723 transitions. [2022-11-03 02:00:08,080 INFO L78 Accepts]: Start accepts. Automaton has 3771 states and 5723 transitions. Word has length 1555 [2022-11-03 02:00:08,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:00:08,082 INFO L495 AbstractCegarLoop]: Abstraction has 3771 states and 5723 transitions. [2022-11-03 02:00:08,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 2 states have call successors, (147), 2 states have call predecessors, (147), 1 states have return successors, (143), 2 states have call predecessors, (143), 2 states have call successors, (143) [2022-11-03 02:00:08,083 INFO L276 IsEmpty]: Start isEmpty. Operand 3771 states and 5723 transitions. [2022-11-03 02:00:08,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1555 [2022-11-03 02:00:08,105 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:00:08,105 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 119, 119, 119, 119, 119, 119, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:00:08,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:00:08,106 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:00:08,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:00:08,118 INFO L85 PathProgramCache]: Analyzing trace with hash 2083923049, now seen corresponding path program 1 times [2022-11-03 02:00:08,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:00:08,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402973920] [2022-11-03 02:00:08,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:00:08,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:00:08,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:00:10,614 INFO L134 CoverageAnalysis]: Checked inductivity of 70840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70840 trivial. 0 not checked. [2022-11-03 02:00:10,615 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:00:10,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402973920] [2022-11-03 02:00:10,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402973920] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:00:10,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:00:10,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:00:10,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253416593] [2022-11-03 02:00:10,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:00:10,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:00:10,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:00:10,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:00:10,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:00:10,624 INFO L87 Difference]: Start difference. First operand 3771 states and 5723 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 2 states have call successors, (147), 2 states have call predecessors, (147), 1 states have return successors, (143), 2 states have call predecessors, (143), 2 states have call successors, (143) [2022-11-03 02:00:12,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:00:14,856 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 02:00:15,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:00:15,699 INFO L93 Difference]: Finished difference Result 10716 states and 16279 transitions. [2022-11-03 02:00:15,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:00:15,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 2 states have call successors, (147), 2 states have call predecessors, (147), 1 states have return successors, (143), 2 states have call predecessors, (143), 2 states have call successors, (143) Word has length 1554 [2022-11-03 02:00:15,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:00:15,740 INFO L225 Difference]: With dead ends: 10716 [2022-11-03 02:00:15,741 INFO L226 Difference]: Without dead ends: 7229 [2022-11-03 02:00:15,759 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 02:00:15,764 INFO L413 NwaCegarLoop]: 1938 mSDtfsCounter, 1328 mSDsluCounter, 1767 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1330 SdHoareTripleChecker+Valid, 3632 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:00:15,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1330 Valid, 3632 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 157 Invalid, 2 Unknown, 0 Unchecked, 4.7s Time] [2022-11-03 02:00:15,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7229 states. [2022-11-03 02:00:16,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7229 to 7215. [2022-11-03 02:00:16,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7215 states, 5065 states have (on average 1.4278381046396842) internal successors, (7232), 5091 states have internal predecessors, (7232), 1867 states have call successors, (1867), 283 states have call predecessors, (1867), 282 states have return successors, (1862), 1848 states have call predecessors, (1862), 1862 states have call successors, (1862) [2022-11-03 02:00:16,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7215 states to 7215 states and 10961 transitions. [2022-11-03 02:00:16,238 INFO L78 Accepts]: Start accepts. Automaton has 7215 states and 10961 transitions. Word has length 1554 [2022-11-03 02:00:16,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:00:16,241 INFO L495 AbstractCegarLoop]: Abstraction has 7215 states and 10961 transitions. [2022-11-03 02:00:16,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 2 states have call successors, (147), 2 states have call predecessors, (147), 1 states have return successors, (143), 2 states have call predecessors, (143), 2 states have call successors, (143) [2022-11-03 02:00:16,243 INFO L276 IsEmpty]: Start isEmpty. Operand 7215 states and 10961 transitions. [2022-11-03 02:00:16,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1554 [2022-11-03 02:00:16,264 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:00:16,265 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 119, 119, 119, 119, 119, 119, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:00:16,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:00:16,265 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:00:16,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:00:16,267 INFO L85 PathProgramCache]: Analyzing trace with hash -482880582, now seen corresponding path program 1 times [2022-11-03 02:00:16,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:00:16,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377579773] [2022-11-03 02:00:16,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:00:16,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:00:16,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:00:18,604 INFO L134 CoverageAnalysis]: Checked inductivity of 70840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70840 trivial. 0 not checked. [2022-11-03 02:00:18,604 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:00:18,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377579773] [2022-11-03 02:00:18,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377579773] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:00:18,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:00:18,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:00:18,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383026218] [2022-11-03 02:00:18,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:00:18,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:00:18,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:00:18,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:00:18,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:00:18,610 INFO L87 Difference]: Start difference. First operand 7215 states and 10961 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (147), 2 states have call predecessors, (147), 1 states have return successors, (143), 2 states have call predecessors, (143), 2 states have call successors, (143) [2022-11-03 02:00:20,690 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:00:22,902 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-03 02:00:23,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:00:23,511 INFO L93 Difference]: Finished difference Result 20985 states and 31901 transitions. [2022-11-03 02:00:23,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:00:23,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (147), 2 states have call predecessors, (147), 1 states have return successors, (143), 2 states have call predecessors, (143), 2 states have call successors, (143) Word has length 1553 [2022-11-03 02:00:23,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:00:23,612 INFO L225 Difference]: With dead ends: 20985 [2022-11-03 02:00:23,612 INFO L226 Difference]: Without dead ends: 14054 [2022-11-03 02:00:23,644 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 02:00:23,646 INFO L413 NwaCegarLoop]: 1942 mSDtfsCounter, 1323 mSDsluCounter, 1764 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1325 SdHoareTripleChecker+Valid, 3633 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:00:23,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1325 Valid, 3633 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 159 Invalid, 2 Unknown, 0 Unchecked, 4.5s Time] [2022-11-03 02:00:23,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14054 states. [2022-11-03 02:00:24,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14054 to 14033. [2022-11-03 02:00:24,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14033 states, 9906 states have (on average 1.4331718150615789) internal successors, (14197), 9956 states have internal predecessors, (14197), 3571 states have call successors, (3571), 556 states have call predecessors, (3571), 555 states have return successors, (3566), 3536 states have call predecessors, (3566), 3566 states have call successors, (3566) [2022-11-03 02:00:24,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14033 states to 14033 states and 21334 transitions. [2022-11-03 02:00:24,576 INFO L78 Accepts]: Start accepts. Automaton has 14033 states and 21334 transitions. Word has length 1553 [2022-11-03 02:00:24,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:00:24,579 INFO L495 AbstractCegarLoop]: Abstraction has 14033 states and 21334 transitions. [2022-11-03 02:00:24,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (147), 2 states have call predecessors, (147), 1 states have return successors, (143), 2 states have call predecessors, (143), 2 states have call successors, (143) [2022-11-03 02:00:24,580 INFO L276 IsEmpty]: Start isEmpty. Operand 14033 states and 21334 transitions. [2022-11-03 02:00:24,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1554 [2022-11-03 02:00:24,619 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:00:24,620 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 119, 119, 119, 119, 119, 119, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:00:24,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:00:24,621 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:00:24,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:00:24,622 INFO L85 PathProgramCache]: Analyzing trace with hash -766775288, now seen corresponding path program 1 times [2022-11-03 02:00:24,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:00:24,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125343721] [2022-11-03 02:00:24,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:00:24,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:00:25,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:00:26,857 INFO L134 CoverageAnalysis]: Checked inductivity of 70840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70840 trivial. 0 not checked. [2022-11-03 02:00:26,857 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:00:26,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125343721] [2022-11-03 02:00:26,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125343721] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:00:26,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:00:26,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:00:26,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430168574] [2022-11-03 02:00:26,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:00:26,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:00:26,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:00:26,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:00:26,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:00:26,861 INFO L87 Difference]: Start difference. First operand 14033 states and 21334 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (147), 2 states have call predecessors, (147), 1 states have return successors, (143), 2 states have call predecessors, (143), 2 states have call successors, (143) [2022-11-03 02:00:28,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:00:31,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 02:00:32,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-03 02:00:33,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:00:33,817 INFO L93 Difference]: Finished difference Result 41429 states and 63004 transitions. [2022-11-03 02:00:33,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:00:33,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (147), 2 states have call predecessors, (147), 1 states have return successors, (143), 2 states have call predecessors, (143), 2 states have call successors, (143) Word has length 1553 [2022-11-03 02:00:33,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:00:33,963 INFO L225 Difference]: With dead ends: 41429 [2022-11-03 02:00:33,963 INFO L226 Difference]: Without dead ends: 27680 [2022-11-03 02:00:34,034 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 02:00:34,035 INFO L413 NwaCegarLoop]: 1961 mSDtfsCounter, 1329 mSDsluCounter, 1767 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1331 SdHoareTripleChecker+Valid, 3655 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:00:34,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1331 Valid, 3655 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 157 Invalid, 2 Unknown, 0 Unchecked, 6.1s Time] [2022-11-03 02:00:34,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27680 states. [2022-11-03 02:00:35,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27680 to 27665. [2022-11-03 02:00:35,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27665 states, 19578 states have (on average 1.4357442026764735) internal successors, (28109), 19676 states have internal predecessors, (28109), 6979 states have call successors, (6979), 1108 states have call predecessors, (6979), 1107 states have return successors, (6974), 6912 states have call predecessors, (6974), 6974 states have call successors, (6974) [2022-11-03 02:00:35,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27665 states to 27665 states and 42062 transitions. [2022-11-03 02:00:35,682 INFO L78 Accepts]: Start accepts. Automaton has 27665 states and 42062 transitions. Word has length 1553 [2022-11-03 02:00:35,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:00:35,684 INFO L495 AbstractCegarLoop]: Abstraction has 27665 states and 42062 transitions. [2022-11-03 02:00:35,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (147), 2 states have call predecessors, (147), 1 states have return successors, (143), 2 states have call predecessors, (143), 2 states have call successors, (143) [2022-11-03 02:00:35,684 INFO L276 IsEmpty]: Start isEmpty. Operand 27665 states and 42062 transitions. [2022-11-03 02:00:35,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1556 [2022-11-03 02:00:35,705 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:00:35,706 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 119, 119, 119, 119, 119, 119, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:00:35,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:00:35,706 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:00:35,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:00:35,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1140656591, now seen corresponding path program 1 times [2022-11-03 02:00:35,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:00:35,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822000538] [2022-11-03 02:00:35,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:00:35,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:00:36,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:00:38,283 INFO L134 CoverageAnalysis]: Checked inductivity of 70840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70840 trivial. 0 not checked. [2022-11-03 02:00:38,283 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:00:38,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822000538] [2022-11-03 02:00:38,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822000538] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:00:38,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:00:38,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:00:38,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625509445] [2022-11-03 02:00:38,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:00:38,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:00:38,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:00:38,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:00:38,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:00:38,290 INFO L87 Difference]: Start difference. First operand 27665 states and 42062 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 2 states have call successors, (145), 2 states have call predecessors, (145), 1 states have return successors, (142), 1 states have call predecessors, (142), 1 states have call successors, (142) [2022-11-03 02:00:40,369 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:00:42,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:00:42,043 INFO L93 Difference]: Finished difference Result 79766 states and 121331 transitions. [2022-11-03 02:00:42,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:00:42,043 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 2 states have call successors, (145), 2 states have call predecessors, (145), 1 states have return successors, (142), 1 states have call predecessors, (142), 1 states have call successors, (142) Word has length 1555 [2022-11-03 02:00:42,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:00:42,417 INFO L225 Difference]: With dead ends: 79766 [2022-11-03 02:00:42,417 INFO L226 Difference]: Without dead ends: 52385 [2022-11-03 02:00:42,500 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 02:00:42,502 INFO L413 NwaCegarLoop]: 1941 mSDtfsCounter, 1209 mSDsluCounter, 1761 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1209 SdHoareTripleChecker+Valid, 3630 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:00:42,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1209 Valid, 3630 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 163 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-11-03 02:00:42,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52385 states. [2022-11-03 02:00:45,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52385 to 52341. [2022-11-03 02:00:45,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52341 states, 37276 states have (on average 1.4396126193797618) internal successors, (53663), 37470 states have internal predecessors, (53663), 12979 states have call successors, (12979), 2086 states have call predecessors, (12979), 2085 states have return successors, (12974), 12848 states have call predecessors, (12974), 12974 states have call successors, (12974) [2022-11-03 02:00:45,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52341 states to 52341 states and 79616 transitions. [2022-11-03 02:00:45,799 INFO L78 Accepts]: Start accepts. Automaton has 52341 states and 79616 transitions. Word has length 1555 [2022-11-03 02:00:45,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:00:45,802 INFO L495 AbstractCegarLoop]: Abstraction has 52341 states and 79616 transitions. [2022-11-03 02:00:45,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 2 states have call successors, (145), 2 states have call predecessors, (145), 1 states have return successors, (142), 1 states have call predecessors, (142), 1 states have call successors, (142) [2022-11-03 02:00:45,803 INFO L276 IsEmpty]: Start isEmpty. Operand 52341 states and 79616 transitions. [2022-11-03 02:00:45,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1559 [2022-11-03 02:00:45,841 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:00:45,842 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 119, 119, 119, 119, 119, 119, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:00:45,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:00:45,842 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:00:45,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:00:45,843 INFO L85 PathProgramCache]: Analyzing trace with hash -638742254, now seen corresponding path program 1 times [2022-11-03 02:00:45,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:00:45,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181234217] [2022-11-03 02:00:45,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:00:45,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:00:46,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:00:47,843 INFO L134 CoverageAnalysis]: Checked inductivity of 70840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70840 trivial. 0 not checked. [2022-11-03 02:00:47,843 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:00:47,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181234217] [2022-11-03 02:00:47,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181234217] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:00:47,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:00:47,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:00:47,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085060545] [2022-11-03 02:00:47,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:00:47,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:00:47,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:00:47,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:00:47,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:00:47,847 INFO L87 Difference]: Start difference. First operand 52341 states and 79616 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 2 states have call successors, (147), 2 states have call predecessors, (147), 1 states have return successors, (143), 2 states have call predecessors, (143), 2 states have call successors, (143) [2022-11-03 02:00:49,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:00:52,103 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 02:00:55,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:00:55,283 INFO L93 Difference]: Finished difference Result 155710 states and 236809 transitions. [2022-11-03 02:00:55,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:00:55,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 2 states have call successors, (147), 2 states have call predecessors, (147), 1 states have return successors, (143), 2 states have call predecessors, (143), 2 states have call successors, (143) Word has length 1558 [2022-11-03 02:00:55,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:00:55,770 INFO L225 Difference]: With dead ends: 155710 [2022-11-03 02:00:55,770 INFO L226 Difference]: Without dead ends: 103653 [2022-11-03 02:00:56,259 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 02:00:56,261 INFO L413 NwaCegarLoop]: 2051 mSDtfsCounter, 1312 mSDsluCounter, 1764 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1314 SdHoareTripleChecker+Valid, 3742 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:00:56,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1314 Valid, 3742 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 172 Invalid, 2 Unknown, 0 Unchecked, 4.7s Time] [2022-11-03 02:00:56,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103653 states. [2022-11-03 02:01:00,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103653 to 103605. [2022-11-03 02:01:00,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103605 states, 73820 states have (on average 1.4395963153616906) internal successors, (106271), 74206 states have internal predecessors, (106271), 25619 states have call successors, (25619), 4166 states have call predecessors, (25619), 4165 states have return successors, (25614), 25360 states have call predecessors, (25614), 25614 states have call successors, (25614) [2022-11-03 02:01:00,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103605 states to 103605 states and 157504 transitions. [2022-11-03 02:01:00,749 INFO L78 Accepts]: Start accepts. Automaton has 103605 states and 157504 transitions. Word has length 1558 [2022-11-03 02:01:00,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:01:00,751 INFO L495 AbstractCegarLoop]: Abstraction has 103605 states and 157504 transitions. [2022-11-03 02:01:00,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 2 states have call successors, (147), 2 states have call predecessors, (147), 1 states have return successors, (143), 2 states have call predecessors, (143), 2 states have call successors, (143) [2022-11-03 02:01:00,752 INFO L276 IsEmpty]: Start isEmpty. Operand 103605 states and 157504 transitions. [2022-11-03 02:01:00,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1559 [2022-11-03 02:01:00,768 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:01:00,768 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 119, 119, 119, 119, 119, 119, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:01:00,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:01:00,769 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:01:00,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:01:00,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1359377280, now seen corresponding path program 1 times [2022-11-03 02:01:00,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:01:00,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963438429] [2022-11-03 02:01:00,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:01:00,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:01:01,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:01:02,732 INFO L134 CoverageAnalysis]: Checked inductivity of 70840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70840 trivial. 0 not checked. [2022-11-03 02:01:02,732 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:01:02,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963438429] [2022-11-03 02:01:02,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963438429] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:01:02,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:01:02,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:01:02,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468206798] [2022-11-03 02:01:02,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:01:02,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:01:02,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:01:02,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:01:02,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:01:02,736 INFO L87 Difference]: Start difference. First operand 103605 states and 157504 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 2 states have call successors, (147), 2 states have call predecessors, (147), 1 states have return successors, (143), 2 states have call predecessors, (143), 2 states have call successors, (143) [2022-11-03 02:01:04,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:01:07,644 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 02:01:13,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:01:13,435 INFO L93 Difference]: Finished difference Result 309378 states and 470345 transitions. [2022-11-03 02:01:13,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:01:13,436 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 2 states have call successors, (147), 2 states have call predecessors, (147), 1 states have return successors, (143), 2 states have call predecessors, (143), 2 states have call successors, (143) Word has length 1558 [2022-11-03 02:01:13,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:01:14,798 INFO L225 Difference]: With dead ends: 309378 [2022-11-03 02:01:14,798 INFO L226 Difference]: Without dead ends: 206057 [2022-11-03 02:01:15,132 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 02:01:15,133 INFO L413 NwaCegarLoop]: 2067 mSDtfsCounter, 1321 mSDsluCounter, 1768 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1321 SdHoareTripleChecker+Valid, 3761 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:01:15,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1321 Valid, 3761 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 170 Invalid, 2 Unknown, 0 Unchecked, 4.6s Time] [2022-11-03 02:01:15,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206057 states.