./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--hid--hid-roccat-pyra.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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45af1e92-d6cf-47ad-96a7-c93a197e3e59/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45af1e92-d6cf-47ad-96a7-c93a197e3e59/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_45af1e92-d6cf-47ad-96a7-c93a197e3e59/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45af1e92-d6cf-47ad-96a7-c93a197e3e59/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hid--hid-roccat-pyra.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45af1e92-d6cf-47ad-96a7-c93a197e3e59/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_45af1e92-d6cf-47ad-96a7-c93a197e3e59/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 2d48abbc06c71aeec5c2fd7c4bfe3a64e4c3a331115f87234999cdb923340216 --- 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 02:24:52,921 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:24:52,924 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:24:52,981 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:24:52,981 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:24:52,988 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:24:52,990 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:24:52,996 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:24:52,999 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:24:53,000 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:24:53,001 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:24:53,006 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:24:53,007 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:24:53,012 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:24:53,015 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:24:53,017 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:24:53,019 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:24:53,028 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:24:53,030 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:24:53,032 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:24:53,037 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:24:53,039 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:24:53,041 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:24:53,043 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:24:53,048 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:24:53,052 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:24:53,053 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:24:53,054 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:24:53,056 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:24:53,057 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:24:53,059 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:24:53,060 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:24:53,063 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:24:53,065 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:24:53,066 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:24:53,066 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:24:53,067 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:24:53,068 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:24:53,068 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:24:53,069 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:24:53,070 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:24:53,071 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45af1e92-d6cf-47ad-96a7-c93a197e3e59/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:24:53,125 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:24:53,128 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:24:53,129 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:24:53,129 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:24:53,131 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:24:53,131 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:24:53,131 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:24:53,132 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:24:53,132 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:24:53,132 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:24:53,133 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:24:53,134 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:24:53,134 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:24:53,134 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:24:53,134 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:24:53,135 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:24:53,135 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:24:53,135 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:24:53,136 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:24:53,136 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:24:53,137 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:24:53,137 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:24:53,137 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:24:53,137 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:24:53,138 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:24:53,138 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:24:53,138 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:24:53,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:24:53,139 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:24:53,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:24:53,139 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:24:53,140 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:24:53,140 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:24:53,140 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:24:53,141 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:24:53,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:24:53,141 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:24:53,141 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:24:53,142 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_45af1e92-d6cf-47ad-96a7-c93a197e3e59/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45af1e92-d6cf-47ad-96a7-c93a197e3e59/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d48abbc06c71aeec5c2fd7c4bfe3a64e4c3a331115f87234999cdb923340216 [2022-11-03 02:24:53,505 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:24:53,552 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:24:53,555 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:24:53,556 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:24:53,557 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:24:53,575 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45af1e92-d6cf-47ad-96a7-c93a197e3e59/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hid--hid-roccat-pyra.ko-entry_point.cil.out.i [2022-11-03 02:24:53,673 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45af1e92-d6cf-47ad-96a7-c93a197e3e59/bin/utaipan-7li7fVZpFI/data/b4d519d63/276b775d53f04d19989554e103b48e0f/FLAG9d061a487 [2022-11-03 02:24:54,680 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:24:54,680 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45af1e92-d6cf-47ad-96a7-c93a197e3e59/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hid--hid-roccat-pyra.ko-entry_point.cil.out.i [2022-11-03 02:24:54,737 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45af1e92-d6cf-47ad-96a7-c93a197e3e59/bin/utaipan-7li7fVZpFI/data/b4d519d63/276b775d53f04d19989554e103b48e0f/FLAG9d061a487 [2022-11-03 02:24:55,143 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45af1e92-d6cf-47ad-96a7-c93a197e3e59/bin/utaipan-7li7fVZpFI/data/b4d519d63/276b775d53f04d19989554e103b48e0f [2022-11-03 02:24:55,149 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:24:55,152 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:24:55,154 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:24:55,155 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:24:55,159 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:24:55,160 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:24:55" (1/1) ... [2022-11-03 02:24:55,162 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@237317ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:55, skipping insertion in model container [2022-11-03 02:24:55,162 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:24:55" (1/1) ... [2022-11-03 02:24:55,171 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:24:55,320 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:24:57,303 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_45af1e92-d6cf-47ad-96a7-c93a197e3e59/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hid--hid-roccat-pyra.ko-entry_point.cil.out.i[184130,184143] [2022-11-03 02:24:57,568 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:24:57,627 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:24:57,995 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_45af1e92-d6cf-47ad-96a7-c93a197e3e59/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hid--hid-roccat-pyra.ko-entry_point.cil.out.i[184130,184143] [2022-11-03 02:24:58,025 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:24:58,207 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:24:58,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:58 WrapperNode [2022-11-03 02:24:58,207 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:24:58,209 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:24:58,209 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:24:58,209 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:24:58,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:58" (1/1) ... [2022-11-03 02:24:58,300 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:58" (1/1) ... [2022-11-03 02:24:58,425 INFO L138 Inliner]: procedures = 205, calls = 1203, calls flagged for inlining = 96, calls inlined = 92, statements flattened = 3347 [2022-11-03 02:24:58,425 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:24:58,426 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:24:58,426 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:24:58,427 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:24:58,438 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:58" (1/1) ... [2022-11-03 02:24:58,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:58" (1/1) ... [2022-11-03 02:24:58,462 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:58" (1/1) ... [2022-11-03 02:24:58,463 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:58" (1/1) ... [2022-11-03 02:24:58,590 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:58" (1/1) ... [2022-11-03 02:24:58,612 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:58" (1/1) ... [2022-11-03 02:24:58,640 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:58" (1/1) ... [2022-11-03 02:24:58,663 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:58" (1/1) ... [2022-11-03 02:24:58,698 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:24:58,700 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:24:58,700 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:24:58,701 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:24:58,702 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:58" (1/1) ... [2022-11-03 02:24:58,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:24:58,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45af1e92-d6cf-47ad-96a7-c93a197e3e59/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:24:58,739 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45af1e92-d6cf-47ad-96a7-c93a197e3e59/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:24:58,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45af1e92-d6cf-47ad-96a7-c93a197e3e59/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:24:58,791 INFO L130 BoogieDeclarations]: Found specification of procedure roccat_common2_receive [2022-11-03 02:24:58,792 INFO L138 BoogieDeclarations]: Found implementation of procedure roccat_common2_receive [2022-11-03 02:24:58,792 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 02:24:58,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 02:24:58,792 INFO L130 BoogieDeclarations]: Found specification of procedure hid_set_drvdata [2022-11-03 02:24:58,793 INFO L138 BoogieDeclarations]: Found implementation of procedure hid_set_drvdata [2022-11-03 02:24:58,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 02:24:58,793 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 02:24:58,793 INFO L130 BoogieDeclarations]: Found specification of procedure hid_hw_stop [2022-11-03 02:24:58,794 INFO L138 BoogieDeclarations]: Found implementation of procedure hid_hw_stop [2022-11-03 02:24:58,794 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:24:58,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:24:58,794 INFO L130 BoogieDeclarations]: Found specification of procedure roccat_report_event [2022-11-03 02:24:58,794 INFO L138 BoogieDeclarations]: Found implementation of procedure roccat_report_event [2022-11-03 02:24:58,795 INFO L130 BoogieDeclarations]: Found specification of procedure hid_get_drvdata [2022-11-03 02:24:58,795 INFO L138 BoogieDeclarations]: Found implementation of procedure hid_get_drvdata [2022-11-03 02:24:58,795 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 02:24:58,795 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 02:24:58,795 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 02:24:58,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 02:24:58,796 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 02:24:58,796 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 02:24:58,796 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-03 02:24:58,796 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-03 02:24:58,797 INFO L130 BoogieDeclarations]: Found specification of procedure pyra_sysfs_read_profilex_settings [2022-11-03 02:24:58,797 INFO L138 BoogieDeclarations]: Found implementation of procedure pyra_sysfs_read_profilex_settings [2022-11-03 02:24:58,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:24:58,797 INFO L130 BoogieDeclarations]: Found specification of procedure profile_activated [2022-11-03 02:24:58,797 INFO L138 BoogieDeclarations]: Found implementation of procedure profile_activated [2022-11-03 02:24:58,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:24:58,798 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 02:24:58,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 02:24:58,799 INFO L130 BoogieDeclarations]: Found specification of procedure pyra_send_control [2022-11-03 02:24:58,799 INFO L138 BoogieDeclarations]: Found implementation of procedure pyra_send_control [2022-11-03 02:24:58,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:24:58,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:24:58,800 INFO L130 BoogieDeclarations]: Found specification of procedure pyra_sysfs_read_profilex_buttons [2022-11-03 02:24:58,800 INFO L138 BoogieDeclarations]: Found implementation of procedure pyra_sysfs_read_profilex_buttons [2022-11-03 02:24:58,800 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-11-03 02:24:58,801 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-11-03 02:24:58,801 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_pyra_lock_of_pyra_device [2022-11-03 02:24:58,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_pyra_lock_of_pyra_device [2022-11-03 02:24:58,801 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:24:58,801 INFO L130 BoogieDeclarations]: Found specification of procedure pyra_sysfs_show_actual_profile [2022-11-03 02:24:58,802 INFO L138 BoogieDeclarations]: Found implementation of procedure pyra_sysfs_show_actual_profile [2022-11-03 02:24:58,802 INFO L130 BoogieDeclarations]: Found specification of procedure pyra_sysfs_read [2022-11-03 02:24:58,803 INFO L138 BoogieDeclarations]: Found implementation of procedure pyra_sysfs_read [2022-11-03 02:24:58,803 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 02:24:58,804 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 02:24:58,805 INFO L130 BoogieDeclarations]: Found specification of procedure class_destroy [2022-11-03 02:24:58,805 INFO L138 BoogieDeclarations]: Found implementation of procedure class_destroy [2022-11-03 02:24:58,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:24:58,806 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-03 02:24:58,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-03 02:24:58,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:24:58,807 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-03 02:24:58,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-03 02:24:58,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:24:58,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:24:58,809 INFO L130 BoogieDeclarations]: Found specification of procedure pyra_raw_event [2022-11-03 02:24:58,809 INFO L138 BoogieDeclarations]: Found implementation of procedure pyra_raw_event [2022-11-03 02:24:58,809 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:24:58,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:24:58,810 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_pyra_lock_of_pyra_device [2022-11-03 02:24:58,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_pyra_lock_of_pyra_device [2022-11-03 02:24:58,810 INFO L130 BoogieDeclarations]: Found specification of procedure pyra_remove [2022-11-03 02:24:58,810 INFO L138 BoogieDeclarations]: Found implementation of procedure pyra_remove [2022-11-03 02:24:58,810 INFO L130 BoogieDeclarations]: Found specification of procedure roccat_common2_send_with_status [2022-11-03 02:24:58,811 INFO L138 BoogieDeclarations]: Found implementation of procedure roccat_common2_send_with_status [2022-11-03 02:24:58,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:24:58,811 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-11-03 02:24:58,811 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-11-03 02:24:58,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:24:58,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:24:58,813 INFO L130 BoogieDeclarations]: Found specification of procedure pyra_sysfs_write [2022-11-03 02:24:58,813 INFO L138 BoogieDeclarations]: Found implementation of procedure pyra_sysfs_write [2022-11-03 02:24:58,813 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-03 02:24:58,814 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-03 02:24:59,594 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:24:59,597 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:25:00,049 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 02:25:02,923 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:25:03,412 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:25:03,412 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 02:25:03,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:25:03 BoogieIcfgContainer [2022-11-03 02:25:03,418 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:25:03,421 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:25:03,421 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:25:03,426 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:25:03,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:24:55" (1/3) ... [2022-11-03 02:25:03,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b4cf816 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:25:03, skipping insertion in model container [2022-11-03 02:25:03,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:58" (2/3) ... [2022-11-03 02:25:03,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b4cf816 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:25:03, skipping insertion in model container [2022-11-03 02:25:03,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:25:03" (3/3) ... [2022-11-03 02:25:03,430 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--hid--hid-roccat-pyra.ko-entry_point.cil.out.i [2022-11-03 02:25:03,454 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:25:03,454 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:25:03,547 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:25:03,556 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;@4f72161b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:25:03,556 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:25:03,565 INFO L276 IsEmpty]: Start isEmpty. Operand has 773 states, 485 states have (on average 1.4) internal successors, (679), 518 states have internal predecessors, (679), 254 states have call successors, (254), 33 states have call predecessors, (254), 32 states have return successors, (232), 232 states have call predecessors, (232), 232 states have call successors, (232) [2022-11-03 02:25:03,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 954 [2022-11-03 02:25:03,656 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:03,658 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 56, 56, 56, 39, 39, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:03,659 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:03,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:03,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1250635535, now seen corresponding path program 1 times [2022-11-03 02:25:03,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:25:03,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485320456] [2022-11-03 02:25:03,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:03,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:25:05,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:08,014 INFO L134 CoverageAnalysis]: Checked inductivity of 17843 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17843 trivial. 0 not checked. [2022-11-03 02:25:08,015 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:25:08,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485320456] [2022-11-03 02:25:08,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485320456] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:08,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:08,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:25:08,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299731358] [2022-11-03 02:25:08,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:08,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:25:08,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:25:08,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:25:08,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:25:08,084 INFO L87 Difference]: Start difference. First operand has 773 states, 485 states have (on average 1.4) internal successors, (679), 518 states have internal predecessors, (679), 254 states have call successors, (254), 33 states have call predecessors, (254), 32 states have return successors, (232), 232 states have call predecessors, (232), 232 states have call successors, (232) Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (110), 2 states have call predecessors, (110), 1 states have return successors, (109), 2 states have call predecessors, (109), 2 states have call successors, (109) [2022-11-03 02:25:10,175 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 02:25:12,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:13,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:14,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:14,079 INFO L93 Difference]: Finished difference Result 1804 states and 2800 transitions. [2022-11-03 02:25:14,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:25:14,082 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (110), 2 states have call predecessors, (110), 1 states have return successors, (109), 2 states have call predecessors, (109), 2 states have call successors, (109) Word has length 953 [2022-11-03 02:25:14,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:14,115 INFO L225 Difference]: With dead ends: 1804 [2022-11-03 02:25:14,115 INFO L226 Difference]: Without dead ends: 1175 [2022-11-03 02:25:14,124 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 02:25:14,128 INFO L413 NwaCegarLoop]: 1157 mSDtfsCounter, 746 mSDsluCounter, 1121 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 2190 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:14,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [746 Valid, 2190 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 194 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2022-11-03 02:25:14,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2022-11-03 02:25:14,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 1171. [2022-11-03 02:25:14,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1171 states, 802 states have (on average 1.401496259351621) internal successors, (1124), 810 states have internal predecessors, (1124), 315 states have call successors, (315), 54 states have call predecessors, (315), 53 states have return successors, (309), 309 states have call predecessors, (309), 309 states have call successors, (309) [2022-11-03 02:25:14,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 1748 transitions. [2022-11-03 02:25:14,346 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 1748 transitions. Word has length 953 [2022-11-03 02:25:14,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:14,351 INFO L495 AbstractCegarLoop]: Abstraction has 1171 states and 1748 transitions. [2022-11-03 02:25:14,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (110), 2 states have call predecessors, (110), 1 states have return successors, (109), 2 states have call predecessors, (109), 2 states have call successors, (109) [2022-11-03 02:25:14,352 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 1748 transitions. [2022-11-03 02:25:14,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 964 [2022-11-03 02:25:14,416 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:14,417 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 56, 56, 56, 39, 39, 11, 11, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:14,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:25:14,418 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:14,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:14,419 INFO L85 PathProgramCache]: Analyzing trace with hash -847812008, now seen corresponding path program 1 times [2022-11-03 02:25:14,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:25:14,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560280211] [2022-11-03 02:25:14,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:14,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:25:15,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:16,625 INFO L134 CoverageAnalysis]: Checked inductivity of 17845 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17845 trivial. 0 not checked. [2022-11-03 02:25:16,626 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:25:16,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560280211] [2022-11-03 02:25:16,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560280211] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:16,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:16,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:25:16,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088117529] [2022-11-03 02:25:16,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:16,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:25:16,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:25:16,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:25:16,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:25:16,635 INFO L87 Difference]: Start difference. First operand 1171 states and 1748 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (114), 2 states have call predecessors, (114), 1 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) [2022-11-03 02:25:18,700 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 02:25:19,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:19,383 INFO L93 Difference]: Finished difference Result 3038 states and 4533 transitions. [2022-11-03 02:25:19,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:25:19,384 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (114), 2 states have call predecessors, (114), 1 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) Word has length 963 [2022-11-03 02:25:19,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:19,400 INFO L225 Difference]: With dead ends: 3038 [2022-11-03 02:25:19,401 INFO L226 Difference]: Without dead ends: 2083 [2022-11-03 02:25:19,405 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 02:25:19,407 INFO L413 NwaCegarLoop]: 1104 mSDtfsCounter, 711 mSDsluCounter, 1069 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 2086 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:19,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [711 Valid, 2086 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 188 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-11-03 02:25:19,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2083 states. [2022-11-03 02:25:19,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2083 to 2065. [2022-11-03 02:25:19,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2065 states, 1462 states have (on average 1.43296853625171) internal successors, (2095), 1474 states have internal predecessors, (2095), 498 states have call successors, (498), 105 states have call predecessors, (498), 104 states have return successors, (492), 491 states have call predecessors, (492), 492 states have call successors, (492) [2022-11-03 02:25:19,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2065 states to 2065 states and 3085 transitions. [2022-11-03 02:25:19,547 INFO L78 Accepts]: Start accepts. Automaton has 2065 states and 3085 transitions. Word has length 963 [2022-11-03 02:25:19,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:19,550 INFO L495 AbstractCegarLoop]: Abstraction has 2065 states and 3085 transitions. [2022-11-03 02:25:19,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (114), 2 states have call predecessors, (114), 1 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) [2022-11-03 02:25:19,551 INFO L276 IsEmpty]: Start isEmpty. Operand 2065 states and 3085 transitions. [2022-11-03 02:25:19,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 966 [2022-11-03 02:25:19,564 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:19,565 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 56, 56, 56, 39, 39, 11, 11, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:19,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:25:19,566 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:19,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:19,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1636995756, now seen corresponding path program 1 times [2022-11-03 02:25:19,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:25:19,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171776338] [2022-11-03 02:25:19,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:19,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:25:20,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:21,699 INFO L134 CoverageAnalysis]: Checked inductivity of 17845 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17845 trivial. 0 not checked. [2022-11-03 02:25:21,700 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:25:21,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171776338] [2022-11-03 02:25:21,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171776338] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:21,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:21,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:25:21,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043439067] [2022-11-03 02:25:21,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:21,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:25:21,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:25:21,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:25:21,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:25:21,704 INFO L87 Difference]: Start difference. First operand 2065 states and 3085 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (115), 2 states have call predecessors, (115), 1 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) [2022-11-03 02:25:23,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:23,480 INFO L93 Difference]: Finished difference Result 5708 states and 8520 transitions. [2022-11-03 02:25:23,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:25:23,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (115), 2 states have call predecessors, (115), 1 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) Word has length 965 [2022-11-03 02:25:23,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:23,514 INFO L225 Difference]: With dead ends: 5708 [2022-11-03 02:25:23,514 INFO L226 Difference]: Without dead ends: 3859 [2022-11-03 02:25:23,523 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 02:25:23,525 INFO L413 NwaCegarLoop]: 1116 mSDtfsCounter, 1040 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1040 SdHoareTripleChecker+Valid, 1778 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:23,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1040 Valid, 1778 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-03 02:25:23,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3859 states. [2022-11-03 02:25:23,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3859 to 3841. [2022-11-03 02:25:23,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3841 states, 2762 states have (on average 1.446415640839971) internal successors, (3995), 2782 states have internal predecessors, (3995), 872 states have call successors, (872), 207 states have call predecessors, (872), 206 states have return successors, (866), 863 states have call predecessors, (866), 866 states have call successors, (866) [2022-11-03 02:25:23,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3841 states to 3841 states and 5733 transitions. [2022-11-03 02:25:23,839 INFO L78 Accepts]: Start accepts. Automaton has 3841 states and 5733 transitions. Word has length 965 [2022-11-03 02:25:23,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:23,841 INFO L495 AbstractCegarLoop]: Abstraction has 3841 states and 5733 transitions. [2022-11-03 02:25:23,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (115), 2 states have call predecessors, (115), 1 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) [2022-11-03 02:25:23,842 INFO L276 IsEmpty]: Start isEmpty. Operand 3841 states and 5733 transitions. [2022-11-03 02:25:23,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 969 [2022-11-03 02:25:23,865 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:23,866 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 56, 56, 56, 39, 39, 11, 11, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:23,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:25:23,867 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:23,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:23,868 INFO L85 PathProgramCache]: Analyzing trace with hash 306618405, now seen corresponding path program 1 times [2022-11-03 02:25:23,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:25:23,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275173635] [2022-11-03 02:25:23,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:23,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:25:24,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:25,566 INFO L134 CoverageAnalysis]: Checked inductivity of 17845 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17845 trivial. 0 not checked. [2022-11-03 02:25:25,567 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:25:25,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275173635] [2022-11-03 02:25:25,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275173635] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:25,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:25,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:25:25,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862871711] [2022-11-03 02:25:25,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:25,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:25:25,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:25:25,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:25:25,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:25:25,571 INFO L87 Difference]: Start difference. First operand 3841 states and 5733 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 2 states have call successors, (115), 2 states have call predecessors, (115), 1 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) [2022-11-03 02:25:27,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:28,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:28,470 INFO L93 Difference]: Finished difference Result 10959 states and 16339 transitions. [2022-11-03 02:25:28,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:25:28,472 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 2 states have call successors, (115), 2 states have call predecessors, (115), 1 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) Word has length 968 [2022-11-03 02:25:28,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:28,582 INFO L225 Difference]: With dead ends: 10959 [2022-11-03 02:25:28,582 INFO L226 Difference]: Without dead ends: 7334 [2022-11-03 02:25:28,595 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 02:25:28,597 INFO L413 NwaCegarLoop]: 1141 mSDtfsCounter, 705 mSDsluCounter, 1064 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 2121 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:28,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 2121 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 195 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-11-03 02:25:28,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7334 states. [2022-11-03 02:25:28,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7334 to 7313. [2022-11-03 02:25:28,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7313 states, 5306 states have (on average 1.453260459856766) internal successors, (7711), 5342 states have internal predecessors, (7711), 1596 states have call successors, (1596), 411 states have call predecessors, (1596), 410 states have return successors, (1590), 1583 states have call predecessors, (1590), 1590 states have call successors, (1590) [2022-11-03 02:25:29,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7313 states to 7313 states and 10897 transitions. [2022-11-03 02:25:29,039 INFO L78 Accepts]: Start accepts. Automaton has 7313 states and 10897 transitions. Word has length 968 [2022-11-03 02:25:29,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:29,041 INFO L495 AbstractCegarLoop]: Abstraction has 7313 states and 10897 transitions. [2022-11-03 02:25:29,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 2 states have call successors, (115), 2 states have call predecessors, (115), 1 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) [2022-11-03 02:25:29,043 INFO L276 IsEmpty]: Start isEmpty. Operand 7313 states and 10897 transitions. [2022-11-03 02:25:29,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 969 [2022-11-03 02:25:29,056 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:29,057 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 56, 56, 56, 39, 39, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:29,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:25:29,058 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:29,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:29,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1459389210, now seen corresponding path program 1 times [2022-11-03 02:25:29,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:25:29,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908057965] [2022-11-03 02:25:29,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:29,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:25:29,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:31,177 INFO L134 CoverageAnalysis]: Checked inductivity of 17887 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17887 trivial. 0 not checked. [2022-11-03 02:25:31,177 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:25:31,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908057965] [2022-11-03 02:25:31,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908057965] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:31,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:31,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:25:31,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334017602] [2022-11-03 02:25:31,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:31,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:25:31,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:25:31,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:25:31,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:25:31,182 INFO L87 Difference]: Start difference. First operand 7313 states and 10897 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 3 states have call successors, (112), 2 states have call predecessors, (112), 1 states have return successors, (111), 2 states have call predecessors, (111), 2 states have call successors, (111) [2022-11-03 02:25:33,241 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 02:25:34,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:34,058 INFO L93 Difference]: Finished difference Result 7315 states and 10898 transitions. [2022-11-03 02:25:34,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:25:34,059 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 3 states have call successors, (112), 2 states have call predecessors, (112), 1 states have return successors, (111), 2 states have call predecessors, (111), 2 states have call successors, (111) Word has length 968 [2022-11-03 02:25:34,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:34,117 INFO L225 Difference]: With dead ends: 7315 [2022-11-03 02:25:34,117 INFO L226 Difference]: Without dead ends: 7312 [2022-11-03 02:25:34,122 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 02:25:34,124 INFO L413 NwaCegarLoop]: 984 mSDtfsCounter, 841 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:34,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 984 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-11-03 02:25:34,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7312 states. [2022-11-03 02:25:34,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7312 to 7312. [2022-11-03 02:25:34,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7312 states, 5306 states have (on average 1.4530719939690917) internal successors, (7710), 5341 states have internal predecessors, (7710), 1595 states have call successors, (1595), 411 states have call predecessors, (1595), 410 states have return successors, (1590), 1583 states have call predecessors, (1590), 1590 states have call successors, (1590) [2022-11-03 02:25:34,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7312 states to 7312 states and 10895 transitions. [2022-11-03 02:25:34,769 INFO L78 Accepts]: Start accepts. Automaton has 7312 states and 10895 transitions. Word has length 968 [2022-11-03 02:25:34,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:34,771 INFO L495 AbstractCegarLoop]: Abstraction has 7312 states and 10895 transitions. [2022-11-03 02:25:34,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 3 states have call successors, (112), 2 states have call predecessors, (112), 1 states have return successors, (111), 2 states have call predecessors, (111), 2 states have call successors, (111) [2022-11-03 02:25:34,771 INFO L276 IsEmpty]: Start isEmpty. Operand 7312 states and 10895 transitions. [2022-11-03 02:25:34,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 972 [2022-11-03 02:25:34,785 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:34,786 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 56, 56, 56, 39, 39, 11, 11, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:34,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:25:34,787 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:34,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:34,788 INFO L85 PathProgramCache]: Analyzing trace with hash -505326379, now seen corresponding path program 1 times [2022-11-03 02:25:34,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:25:34,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772958843] [2022-11-03 02:25:34,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:34,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:25:35,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:36,429 INFO L134 CoverageAnalysis]: Checked inductivity of 17845 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17845 trivial. 0 not checked. [2022-11-03 02:25:36,430 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:25:36,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772958843] [2022-11-03 02:25:36,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772958843] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:36,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:36,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:25:36,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884688064] [2022-11-03 02:25:36,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:36,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:25:36,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:25:36,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:25:36,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:25:36,434 INFO L87 Difference]: Start difference. First operand 7312 states and 10895 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 2 states have call successors, (114), 2 states have call predecessors, (114), 1 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) [2022-11-03 02:25:38,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:38,678 INFO L93 Difference]: Finished difference Result 20864 states and 31005 transitions. [2022-11-03 02:25:38,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:25:38,679 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 2 states have call successors, (114), 2 states have call predecessors, (114), 1 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) Word has length 971 [2022-11-03 02:25:38,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:38,777 INFO L225 Difference]: With dead ends: 20864 [2022-11-03 02:25:38,778 INFO L226 Difference]: Without dead ends: 13768 [2022-11-03 02:25:38,806 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 02:25:38,808 INFO L413 NwaCegarLoop]: 1126 mSDtfsCounter, 973 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 973 SdHoareTripleChecker+Valid, 1785 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:38,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [973 Valid, 1785 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-03 02:25:38,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13768 states. [2022-11-03 02:25:39,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13768 to 13744. [2022-11-03 02:25:39,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13744 states, 10098 states have (on average 1.4598930481283423) internal successors, (14742), 10165 states have internal predecessors, (14742), 2827 states have call successors, (2827), 819 states have call predecessors, (2827), 818 states have return successors, (2822), 2807 states have call predecessors, (2822), 2822 states have call successors, (2822) [2022-11-03 02:25:39,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13744 states to 13744 states and 20391 transitions. [2022-11-03 02:25:39,682 INFO L78 Accepts]: Start accepts. Automaton has 13744 states and 20391 transitions. Word has length 971 [2022-11-03 02:25:39,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:39,685 INFO L495 AbstractCegarLoop]: Abstraction has 13744 states and 20391 transitions. [2022-11-03 02:25:39,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 2 states have call successors, (114), 2 states have call predecessors, (114), 1 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) [2022-11-03 02:25:39,686 INFO L276 IsEmpty]: Start isEmpty. Operand 13744 states and 20391 transitions. [2022-11-03 02:25:39,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 973 [2022-11-03 02:25:39,700 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:39,700 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 56, 56, 56, 39, 39, 11, 11, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:39,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:25:39,701 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:39,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:39,705 INFO L85 PathProgramCache]: Analyzing trace with hash -543235301, now seen corresponding path program 1 times [2022-11-03 02:25:39,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:25:39,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556079234] [2022-11-03 02:25:39,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:39,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:25:40,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:41,273 INFO L134 CoverageAnalysis]: Checked inductivity of 17845 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17845 trivial. 0 not checked. [2022-11-03 02:25:41,273 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:25:41,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556079234] [2022-11-03 02:25:41,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556079234] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:41,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:41,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:25:41,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746750010] [2022-11-03 02:25:41,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:41,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:25:41,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:25:41,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:25:41,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:25:41,277 INFO L87 Difference]: Start difference. First operand 13744 states and 20391 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 2 states have call successors, (115), 2 states have call predecessors, (115), 1 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) [2022-11-03 02:25:43,345 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 02:25:45,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:45,461 INFO L93 Difference]: Finished difference Result 40528 states and 60117 transitions. [2022-11-03 02:25:45,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:25:45,462 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 2 states have call successors, (115), 2 states have call predecessors, (115), 1 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) Word has length 972 [2022-11-03 02:25:45,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:45,620 INFO L225 Difference]: With dead ends: 40528 [2022-11-03 02:25:45,620 INFO L226 Difference]: Without dead ends: 27000 [2022-11-03 02:25:45,681 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 02:25:45,682 INFO L413 NwaCegarLoop]: 1193 mSDtfsCounter, 700 mSDsluCounter, 1067 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 2172 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:45,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 2172 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 202 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-11-03 02:25:45,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27000 states. [2022-11-03 02:25:47,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27000 to 26976. [2022-11-03 02:25:47,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26976 states, 19874 states have (on average 1.462312569185871) internal successors, (29062), 20005 states have internal predecessors, (29062), 5467 states have call successors, (5467), 1635 states have call predecessors, (5467), 1634 states have return successors, (5462), 5431 states have call predecessors, (5462), 5462 states have call successors, (5462) [2022-11-03 02:25:47,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26976 states to 26976 states and 39991 transitions. [2022-11-03 02:25:47,509 INFO L78 Accepts]: Start accepts. Automaton has 26976 states and 39991 transitions. Word has length 972 [2022-11-03 02:25:47,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:47,511 INFO L495 AbstractCegarLoop]: Abstraction has 26976 states and 39991 transitions. [2022-11-03 02:25:47,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 2 states have call successors, (115), 2 states have call predecessors, (115), 1 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) [2022-11-03 02:25:47,511 INFO L276 IsEmpty]: Start isEmpty. Operand 26976 states and 39991 transitions. [2022-11-03 02:25:47,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 970 [2022-11-03 02:25:47,525 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:47,525 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 56, 56, 56, 39, 39, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:47,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:25:47,526 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:47,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:47,527 INFO L85 PathProgramCache]: Analyzing trace with hash 2003207767, now seen corresponding path program 1 times [2022-11-03 02:25:47,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:25:47,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857052093] [2022-11-03 02:25:47,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:47,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:25:48,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:49,748 INFO L134 CoverageAnalysis]: Checked inductivity of 17887 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17887 trivial. 0 not checked. [2022-11-03 02:25:49,748 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:25:49,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857052093] [2022-11-03 02:25:49,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857052093] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:49,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:49,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:25:49,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766184038] [2022-11-03 02:25:49,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:49,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:25:49,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:25:49,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:25:49,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:25:49,756 INFO L87 Difference]: Start difference. First operand 26976 states and 39991 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 3 states have call successors, (112), 2 states have call predecessors, (112), 1 states have return successors, (111), 2 states have call predecessors, (111), 2 states have call successors, (111) [2022-11-03 02:25:50,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:52,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:52,182 INFO L93 Difference]: Finished difference Result 26978 states and 39992 transitions. [2022-11-03 02:25:52,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:25:52,187 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 3 states have call successors, (112), 2 states have call predecessors, (112), 1 states have return successors, (111), 2 states have call predecessors, (111), 2 states have call successors, (111) Word has length 969 [2022-11-03 02:25:52,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:52,310 INFO L225 Difference]: With dead ends: 26978 [2022-11-03 02:25:52,311 INFO L226 Difference]: Without dead ends: 26975 [2022-11-03 02:25:52,321 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 02:25:52,322 INFO L413 NwaCegarLoop]: 982 mSDtfsCounter, 838 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 838 SdHoareTripleChecker+Valid, 982 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:52,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [838 Valid, 982 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-03 02:25:52,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26975 states. [2022-11-03 02:25:53,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26975 to 26975. [2022-11-03 02:25:53,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26975 states, 19874 states have (on average 1.4622622521887894) internal successors, (29061), 20004 states have internal predecessors, (29061), 5466 states have call successors, (5466), 1635 states have call predecessors, (5466), 1634 states have return successors, (5462), 5431 states have call predecessors, (5462), 5462 states have call successors, (5462) [2022-11-03 02:25:54,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26975 states to 26975 states and 39989 transitions. [2022-11-03 02:25:54,098 INFO L78 Accepts]: Start accepts. Automaton has 26975 states and 39989 transitions. Word has length 969 [2022-11-03 02:25:54,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:54,100 INFO L495 AbstractCegarLoop]: Abstraction has 26975 states and 39989 transitions. [2022-11-03 02:25:54,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 3 states have call successors, (112), 2 states have call predecessors, (112), 1 states have return successors, (111), 2 states have call predecessors, (111), 2 states have call successors, (111) [2022-11-03 02:25:54,101 INFO L276 IsEmpty]: Start isEmpty. Operand 26975 states and 39989 transitions. [2022-11-03 02:25:54,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 977 [2022-11-03 02:25:54,113 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:54,114 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 56, 56, 56, 39, 39, 11, 11, 11, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:54,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 02:25:54,115 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:54,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:54,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1805059697, now seen corresponding path program 1 times [2022-11-03 02:25:54,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:25:54,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312707927] [2022-11-03 02:25:54,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:54,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:25:54,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:56,143 INFO L134 CoverageAnalysis]: Checked inductivity of 17847 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17847 trivial. 0 not checked. [2022-11-03 02:25:56,145 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:25:56,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312707927] [2022-11-03 02:25:56,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312707927] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:56,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:56,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:25:56,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316824405] [2022-11-03 02:25:56,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:56,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:25:56,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:25:56,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:25:56,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:25:56,151 INFO L87 Difference]: Start difference. First operand 26975 states and 39989 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 2 states have call successors, (118), 2 states have call predecessors, (118), 1 states have return successors, (114), 2 states have call predecessors, (114), 2 states have call successors, (114) [2022-11-03 02:25:58,212 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 02:26:01,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:01,017 INFO L93 Difference]: Finished difference Result 79980 states and 118489 transitions. [2022-11-03 02:26:01,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:26:01,018 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 2 states have call successors, (118), 2 states have call predecessors, (118), 1 states have return successors, (114), 2 states have call predecessors, (114), 2 states have call successors, (114) Word has length 976 [2022-11-03 02:26:01,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:01,307 INFO L225 Difference]: With dead ends: 79980 [2022-11-03 02:26:01,307 INFO L226 Difference]: Without dead ends: 53221 [2022-11-03 02:26:01,425 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 02:26:01,428 INFO L413 NwaCegarLoop]: 1209 mSDtfsCounter, 733 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 733 SdHoareTripleChecker+Valid, 2186 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:01,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [733 Valid, 2186 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 202 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-11-03 02:26:01,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53221 states. [2022-11-03 02:26:04,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53221 to 53205. [2022-11-03 02:26:04,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53205 states, 39181 states have (on average 1.460707996222659) internal successors, (57232), 39439 states have internal predecessors, (57232), 10757 states have call successors, (10757), 3267 states have call predecessors, (10757), 3266 states have return successors, (10753), 10690 states have call predecessors, (10753), 10753 states have call successors, (10753) [2022-11-03 02:26:05,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53205 states to 53205 states and 78742 transitions. [2022-11-03 02:26:05,070 INFO L78 Accepts]: Start accepts. Automaton has 53205 states and 78742 transitions. Word has length 976 [2022-11-03 02:26:05,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:05,072 INFO L495 AbstractCegarLoop]: Abstraction has 53205 states and 78742 transitions. [2022-11-03 02:26:05,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 2 states have call successors, (118), 2 states have call predecessors, (118), 1 states have return successors, (114), 2 states have call predecessors, (114), 2 states have call successors, (114) [2022-11-03 02:26:05,073 INFO L276 IsEmpty]: Start isEmpty. Operand 53205 states and 78742 transitions. [2022-11-03 02:26:05,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 976 [2022-11-03 02:26:05,085 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:05,086 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 56, 56, 56, 39, 39, 11, 11, 11, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:26:05,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 02:26:05,087 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:05,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:05,088 INFO L85 PathProgramCache]: Analyzing trace with hash -824107005, now seen corresponding path program 1 times [2022-11-03 02:26:05,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:26:05,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580608106] [2022-11-03 02:26:05,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:05,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:26:06,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:06,917 INFO L134 CoverageAnalysis]: Checked inductivity of 17847 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17847 trivial. 0 not checked. [2022-11-03 02:26:06,918 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:26:06,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580608106] [2022-11-03 02:26:06,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580608106] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:06,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:06,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:26:06,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555314157] [2022-11-03 02:26:06,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:06,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:26:06,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:26:06,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:26:06,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:26:06,922 INFO L87 Difference]: Start difference. First operand 53205 states and 78742 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 2 states have call successors, (118), 2 states have call predecessors, (118), 1 states have return successors, (114), 2 states have call predecessors, (114), 2 states have call successors, (114) [2022-11-03 02:26:08,979 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 02:26:14,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:14,250 INFO L93 Difference]: Finished difference Result 158158 states and 233916 transitions. [2022-11-03 02:26:14,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:26:14,250 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 2 states have call successors, (118), 2 states have call predecessors, (118), 1 states have return successors, (114), 2 states have call predecessors, (114), 2 states have call successors, (114) Word has length 975 [2022-11-03 02:26:14,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:14,762 INFO L225 Difference]: With dead ends: 158158 [2022-11-03 02:26:14,762 INFO L226 Difference]: Without dead ends: 105169 [2022-11-03 02:26:14,881 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 02:26:14,881 INFO L413 NwaCegarLoop]: 1221 mSDtfsCounter, 734 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 2198 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:14,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 2198 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 204 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2022-11-03 02:26:15,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105169 states. [2022-11-03 02:26:20,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105169 to 105153. [2022-11-03 02:26:20,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105153 states, 77347 states have (on average 1.458440534215936) internal successors, (112806), 77861 states have internal predecessors, (112806), 21275 states have call successors, (21275), 6531 states have call predecessors, (21275), 6530 states have return successors, (21271), 21144 states have call predecessors, (21271), 21271 states have call successors, (21271) [2022-11-03 02:26:21,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105153 states to 105153 states and 155352 transitions. [2022-11-03 02:26:21,469 INFO L78 Accepts]: Start accepts. Automaton has 105153 states and 155352 transitions. Word has length 975 [2022-11-03 02:26:21,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:21,472 INFO L495 AbstractCegarLoop]: Abstraction has 105153 states and 155352 transitions. [2022-11-03 02:26:21,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 2 states have call successors, (118), 2 states have call predecessors, (118), 1 states have return successors, (114), 2 states have call predecessors, (114), 2 states have call successors, (114) [2022-11-03 02:26:21,473 INFO L276 IsEmpty]: Start isEmpty. Operand 105153 states and 155352 transitions. [2022-11-03 02:26:21,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 971 [2022-11-03 02:26:21,495 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:21,496 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 56, 56, 56, 39, 39, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:26:21,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 02:26:21,497 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:21,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:21,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1969536521, now seen corresponding path program 1 times [2022-11-03 02:26:21,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:26:21,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937231518] [2022-11-03 02:26:21,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:21,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:26:22,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:23,591 INFO L134 CoverageAnalysis]: Checked inductivity of 17887 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17887 trivial. 0 not checked. [2022-11-03 02:26:23,592 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:26:23,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937231518] [2022-11-03 02:26:23,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937231518] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:23,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:23,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:26:23,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023654489] [2022-11-03 02:26:23,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:23,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:26:23,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:26:23,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:26:23,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:26:23,596 INFO L87 Difference]: Start difference. First operand 105153 states and 155352 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 3 states have call successors, (112), 2 states have call predecessors, (112), 1 states have return successors, (111), 2 states have call predecessors, (111), 2 states have call successors, (111) [2022-11-03 02:26:25,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:30,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:30,055 INFO L93 Difference]: Finished difference Result 105155 states and 155353 transitions. [2022-11-03 02:26:30,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:26:30,056 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 3 states have call successors, (112), 2 states have call predecessors, (112), 1 states have return successors, (111), 2 states have call predecessors, (111), 2 states have call successors, (111) Word has length 970 [2022-11-03 02:26:30,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:30,519 INFO L225 Difference]: With dead ends: 105155 [2022-11-03 02:26:30,519 INFO L226 Difference]: Without dead ends: 105152 [2022-11-03 02:26:30,555 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 02:26:30,555 INFO L413 NwaCegarLoop]: 980 mSDtfsCounter, 835 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 835 SdHoareTripleChecker+Valid, 980 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:30,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [835 Valid, 980 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-11-03 02:26:30,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105152 states.