./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers--media--dvb-frontends--stv090x-ko---32_7a--linux-3.7.3.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_3c3892d7-644c-42e3-b482-314e7e508b24/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3892d7-644c-42e3-b482-314e7e508b24/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_3c3892d7-644c-42e3-b482-314e7e508b24/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3892d7-644c-42e3-b482-314e7e508b24/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers--media--dvb-frontends--stv090x-ko---32_7a--linux-3.7.3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3892d7-644c-42e3-b482-314e7e508b24/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_3c3892d7-644c-42e3-b482-314e7e508b24/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 1edb128dac5f1749a8164cdbec3766f388b8d95e25a83a97d25b5ef9e1604ba3 --- 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 04:04:47,383 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 04:04:47,385 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 04:04:47,425 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 04:04:47,426 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 04:04:47,429 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 04:04:47,432 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 04:04:47,435 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 04:04:47,437 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 04:04:47,442 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 04:04:47,443 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 04:04:47,444 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 04:04:47,444 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 04:04:47,445 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 04:04:47,446 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 04:04:47,447 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 04:04:47,448 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 04:04:47,448 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 04:04:47,450 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 04:04:47,456 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 04:04:47,458 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 04:04:47,460 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 04:04:47,464 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 04:04:47,465 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 04:04:47,476 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 04:04:47,476 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 04:04:47,476 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 04:04:47,477 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 04:04:47,477 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 04:04:47,478 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 04:04:47,479 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 04:04:47,479 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 04:04:47,480 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 04:04:47,481 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 04:04:47,482 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 04:04:47,482 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 04:04:47,482 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 04:04:47,483 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 04:04:47,489 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 04:04:47,490 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 04:04:47,490 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 04:04:47,491 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3892d7-644c-42e3-b482-314e7e508b24/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 04:04:47,530 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 04:04:47,530 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 04:04:47,530 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 04:04:47,530 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 04:04:47,535 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 04:04:47,535 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 04:04:47,535 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 04:04:47,536 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 04:04:47,536 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 04:04:47,536 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 04:04:47,537 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 04:04:47,537 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 04:04:47,537 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 04:04:47,538 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 04:04:47,538 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 04:04:47,538 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 04:04:47,538 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 04:04:47,538 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 04:04:47,539 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 04:04:47,539 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 04:04:47,539 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 04:04:47,539 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 04:04:47,540 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 04:04:47,540 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 04:04:47,540 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 04:04:47,541 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 04:04:47,541 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 04:04:47,541 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 04:04:47,541 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 04:04:47,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:04:47,542 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 04:04:47,542 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 04:04:47,543 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 04:04:47,543 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 04:04:47,543 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 04:04:47,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 04:04:47,543 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 04:04:47,544 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 04:04:47,545 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_3c3892d7-644c-42e3-b482-314e7e508b24/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3892d7-644c-42e3-b482-314e7e508b24/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1edb128dac5f1749a8164cdbec3766f388b8d95e25a83a97d25b5ef9e1604ba3 [2022-11-03 04:04:47,914 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 04:04:47,937 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 04:04:47,940 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 04:04:47,942 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 04:04:47,943 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 04:04:47,944 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3892d7-644c-42e3-b482-314e7e508b24/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers--media--dvb-frontends--stv090x-ko---32_7a--linux-3.7.3.i [2022-11-03 04:04:48,029 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3892d7-644c-42e3-b482-314e7e508b24/bin/utaipan-7li7fVZpFI/data/abe229ef4/b07a808e8bfb41a29803d1ce9b164785/FLAGd06e4fb4a [2022-11-03 04:04:49,083 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 04:04:49,084 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3892d7-644c-42e3-b482-314e7e508b24/sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers--media--dvb-frontends--stv090x-ko---32_7a--linux-3.7.3.i [2022-11-03 04:04:49,123 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3892d7-644c-42e3-b482-314e7e508b24/bin/utaipan-7li7fVZpFI/data/abe229ef4/b07a808e8bfb41a29803d1ce9b164785/FLAGd06e4fb4a [2022-11-03 04:04:49,435 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3892d7-644c-42e3-b482-314e7e508b24/bin/utaipan-7li7fVZpFI/data/abe229ef4/b07a808e8bfb41a29803d1ce9b164785 [2022-11-03 04:04:49,438 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 04:04:49,441 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 04:04:49,446 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 04:04:49,447 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 04:04:49,451 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 04:04:49,453 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:04:49" (1/1) ... [2022-11-03 04:04:49,454 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74754e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:04:49, skipping insertion in model container [2022-11-03 04:04:49,455 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:04:49" (1/1) ... [2022-11-03 04:04:49,463 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 04:04:49,649 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 04:04:51,797 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_3c3892d7-644c-42e3-b482-314e7e508b24/sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers--media--dvb-frontends--stv090x-ko---32_7a--linux-3.7.3.i[424236,424249] [2022-11-03 04:04:51,959 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:04:52,041 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 04:04:52,813 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_3c3892d7-644c-42e3-b482-314e7e508b24/sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers--media--dvb-frontends--stv090x-ko---32_7a--linux-3.7.3.i[424236,424249] [2022-11-03 04:04:52,826 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:04:52,955 INFO L208 MainTranslator]: Completed translation [2022-11-03 04:04:52,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:04:52 WrapperNode [2022-11-03 04:04:52,956 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 04:04:52,957 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 04:04:52,957 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 04:04:52,958 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 04:04:52,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:04:52" (1/1) ... [2022-11-03 04:04:53,180 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:04:52" (1/1) ... [2022-11-03 04:04:53,552 INFO L138 Inliner]: procedures = 189, calls = 6921, calls flagged for inlining = 69, calls inlined = 54, statements flattened = 16566 [2022-11-03 04:04:53,552 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 04:04:53,553 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 04:04:53,553 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 04:04:53,553 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 04:04:53,563 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:04:52" (1/1) ... [2022-11-03 04:04:53,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:04:52" (1/1) ... [2022-11-03 04:04:53,650 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:04:52" (1/1) ... [2022-11-03 04:04:53,651 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:04:52" (1/1) ... [2022-11-03 04:04:53,971 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:04:52" (1/1) ... [2022-11-03 04:04:54,016 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:04:52" (1/1) ... [2022-11-03 04:04:54,048 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:04:52" (1/1) ... [2022-11-03 04:04:54,072 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:04:52" (1/1) ... [2022-11-03 04:04:54,143 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 04:04:54,144 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 04:04:54,144 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 04:04:54,144 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 04:04:54,145 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:04:52" (1/1) ... [2022-11-03 04:04:54,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:04:54,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3892d7-644c-42e3-b482-314e7e508b24/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:04:54,277 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3892d7-644c-42e3-b482-314e7e508b24/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 04:04:54,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3892d7-644c-42e3-b482-314e7e508b24/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 04:04:54,321 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_demod_lock [2022-11-03 04:04:54,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_demod_lock [2022-11-03 04:04:54,322 INFO L130 BoogieDeclarations]: Found specification of procedure find_dev [2022-11-03 04:04:54,322 INFO L138 BoogieDeclarations]: Found implementation of procedure find_dev [2022-11-03 04:04:54,322 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_vitclk_ctl [2022-11-03 04:04:54,322 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_vitclk_ctl [2022-11-03 04:04:54,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 04:04:54,322 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-03 04:04:54,323 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-03 04:04:54,323 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_send_diseqc_burst [2022-11-03 04:04:54,323 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_send_diseqc_burst [2022-11-03 04:04:54,323 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_demod_lock [2022-11-03 04:04:54,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_demod_lock [2022-11-03 04:04:54,323 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_i2c_gate_ctrl [2022-11-03 04:04:54,323 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_i2c_gate_ctrl [2022-11-03 04:04:54,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 04:04:54,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 04:04:54,324 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_srate [2022-11-03 04:04:54,324 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_srate [2022-11-03 04:04:54,324 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 04:04:54,324 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_per [2022-11-03 04:04:54,324 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_per [2022-11-03 04:04:54,324 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_activate_modcod [2022-11-03 04:04:54,324 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_activate_modcod [2022-11-03 04:04:54,325 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_dvbs_track_crl [2022-11-03 04:04:54,325 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_dvbs_track_crl [2022-11-03 04:04:54,325 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 04:04:54,325 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 04:04:54,325 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_set_viterbi [2022-11-03 04:04:54,325 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_set_viterbi [2022-11-03 04:04:54,326 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_signal_strength [2022-11-03 04:04:54,326 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_signal_strength [2022-11-03 04:04:54,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 04:04:54,326 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 04:04:54,326 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 04:04:54,326 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_send_diseqc_msg [2022-11-03 04:04:54,327 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_send_diseqc_msg [2022-11-03 04:04:54,327 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 04:04:54,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 04:04:54,327 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_set_vit_thacq [2022-11-03 04:04:54,327 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_set_vit_thacq [2022-11-03 04:04:54,327 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_car_width [2022-11-03 04:04:54,328 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_car_width [2022-11-03 04:04:54,328 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_recv_slave_reply [2022-11-03 04:04:54,328 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_recv_slave_reply [2022-11-03 04:04:54,328 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_transfer [2022-11-03 04:04:54,328 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_transfer [2022-11-03 04:04:54,329 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 04:04:54,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 04:04:54,330 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~TO~int [2022-11-03 04:04:54,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~TO~int [2022-11-03 04:04:54,330 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_init [2022-11-03 04:04:54,330 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_init [2022-11-03 04:04:54,330 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-03 04:04:54,331 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-03 04:04:54,331 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-11-03 04:04:54,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-11-03 04:04:54,331 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_dmdlock [2022-11-03 04:04:54,331 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_dmdlock [2022-11-03 04:04:54,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 04:04:54,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 04:04:54,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 04:04:54,332 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_sleep [2022-11-03 04:04:54,333 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_sleep [2022-11-03 04:04:54,333 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_reg [2022-11-03 04:04:54,333 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_reg [2022-11-03 04:04:54,333 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_chk_signal [2022-11-03 04:04:54,333 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_chk_signal [2022-11-03 04:04:54,333 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-03 04:04:54,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-03 04:04:54,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 04:04:54,334 INFO L130 BoogieDeclarations]: Found specification of procedure comp2 [2022-11-03 04:04:54,334 INFO L138 BoogieDeclarations]: Found implementation of procedure comp2 [2022-11-03 04:04:54,334 INFO L130 BoogieDeclarations]: Found specification of procedure remove_dev [2022-11-03 04:04:54,335 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_dev [2022-11-03 04:04:54,335 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_search [2022-11-03 04:04:54,335 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_search [2022-11-03 04:04:54,335 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_write_reg [2022-11-03 04:04:54,335 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_write_reg [2022-11-03 04:04:54,335 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_frontend_algo [2022-11-03 04:04:54,335 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_frontend_algo [2022-11-03 04:04:54,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 04:04:54,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 04:04:54,336 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_status [2022-11-03 04:04:54,337 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_status [2022-11-03 04:04:54,337 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_set_vit_thtracq [2022-11-03 04:04:54,337 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_set_vit_thtracq [2022-11-03 04:04:54,337 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_chk_tmg [2022-11-03 04:04:54,338 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_chk_tmg [2022-11-03 04:04:54,338 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_cnr [2022-11-03 04:04:54,338 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_cnr [2022-11-03 04:04:54,339 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-03 04:04:54,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-03 04:04:54,339 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_set_srate [2022-11-03 04:04:54,339 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_set_srate [2022-11-03 04:04:54,340 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_activate_modcod_single [2022-11-03 04:04:54,340 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_activate_modcod_single [2022-11-03 04:04:54,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 04:04:54,340 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-11-03 04:04:54,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-11-03 04:04:54,340 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_tuner_lock [2022-11-03 04:04:54,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_tuner_lock [2022-11-03 04:04:54,340 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_viterbi [2022-11-03 04:04:54,341 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_viterbi [2022-11-03 04:04:54,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 04:04:54,341 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_mclk [2022-11-03 04:04:54,341 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_mclk [2022-11-03 04:04:54,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 04:04:54,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 04:04:54,342 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_lock_tmg [2022-11-03 04:04:54,343 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_lock_tmg [2022-11-03 04:04:55,700 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 04:04:55,703 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 04:05:15,752 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 04:05:27,799 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 04:05:27,800 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 04:05:27,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:05:27 BoogieIcfgContainer [2022-11-03 04:05:27,809 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 04:05:27,811 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 04:05:27,812 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 04:05:27,816 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 04:05:27,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:04:49" (1/3) ... [2022-11-03 04:05:27,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a38dbcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:05:27, skipping insertion in model container [2022-11-03 04:05:27,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:04:52" (2/3) ... [2022-11-03 04:05:27,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a38dbcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:05:27, skipping insertion in model container [2022-11-03 04:05:27,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:05:27" (3/3) ... [2022-11-03 04:05:27,819 INFO L112 eAbstractionObserver]: Analyzing ICFG main0_drivers--media--dvb-frontends--stv090x-ko---32_7a--linux-3.7.3.i [2022-11-03 04:05:27,840 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 04:05:27,840 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 04:05:27,973 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 04:05:27,980 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;@1a748e98, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 04:05:27,982 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 04:05:28,001 INFO L276 IsEmpty]: Start isEmpty. Operand has 4156 states, 2829 states have (on average 1.44220572640509) internal successors, (4080), 2843 states have internal predecessors, (4080), 1277 states have call successors, (1277), 48 states have call predecessors, (1277), 48 states have return successors, (1277), 1276 states have call predecessors, (1277), 1277 states have call successors, (1277) [2022-11-03 04:05:28,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-03 04:05:28,010 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:05:28,010 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-03 04:05:28,011 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:05:28,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:05:28,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1988632696, now seen corresponding path program 1 times [2022-11-03 04:05:28,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:05:28,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927908429] [2022-11-03 04:05:28,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:05:28,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:05:28,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:05:29,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:05:29,122 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:05:29,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927908429] [2022-11-03 04:05:29,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927908429] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:05:29,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:05:29,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 04:05:29,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631317565] [2022-11-03 04:05:29,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:05:29,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:05:29,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:05:29,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:05:29,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:05:29,175 INFO L87 Difference]: Start difference. First operand has 4156 states, 2829 states have (on average 1.44220572640509) internal successors, (4080), 2843 states have internal predecessors, (4080), 1277 states have call successors, (1277), 48 states have call predecessors, (1277), 48 states have return successors, (1277), 1276 states have call predecessors, (1277), 1277 states have call successors, (1277) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:05:31,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:05:32,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:05:32,430 INFO L93 Difference]: Finished difference Result 8309 states and 13321 transitions. [2022-11-03 04:05:32,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:05:32,436 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-03 04:05:32,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:05:32,526 INFO L225 Difference]: With dead ends: 8309 [2022-11-03 04:05:32,526 INFO L226 Difference]: Without dead ends: 4152 [2022-11-03 04:05:32,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:05:32,587 INFO L413 NwaCegarLoop]: 6382 mSDtfsCounter, 6618 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6618 SdHoareTripleChecker+Valid, 6382 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-03 04:05:32,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6618 Valid, 6382 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-03 04:05:32,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4152 states. [2022-11-03 04:05:33,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4152 to 4152. [2022-11-03 04:05:33,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4152 states, 2828 states have (on average 1.4413012729844412) internal successors, (4076), 2839 states have internal predecessors, (4076), 1276 states have call successors, (1276), 48 states have call predecessors, (1276), 47 states have return successors, (1267), 1266 states have call predecessors, (1267), 1267 states have call successors, (1267) [2022-11-03 04:05:34,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4152 states to 4152 states and 6619 transitions. [2022-11-03 04:05:34,024 INFO L78 Accepts]: Start accepts. Automaton has 4152 states and 6619 transitions. Word has length 6 [2022-11-03 04:05:34,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:05:34,025 INFO L495 AbstractCegarLoop]: Abstraction has 4152 states and 6619 transitions. [2022-11-03 04:05:34,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:05:34,026 INFO L276 IsEmpty]: Start isEmpty. Operand 4152 states and 6619 transitions. [2022-11-03 04:05:34,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-03 04:05:34,026 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:05:34,027 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:05:34,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 04:05:34,027 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:05:34,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:05:34,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1515576348, now seen corresponding path program 1 times [2022-11-03 04:05:34,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:05:34,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142292785] [2022-11-03 04:05:34,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:05:34,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:05:34,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:05:34,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:05:34,702 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:05:34,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142292785] [2022-11-03 04:05:34,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142292785] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:05:34,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:05:34,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 04:05:34,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870465647] [2022-11-03 04:05:34,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:05:34,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:05:34,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:05:34,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:05:34,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:05:34,712 INFO L87 Difference]: Start difference. First operand 4152 states and 6619 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:05:36,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:05:38,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 04:05:41,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 04:05:43,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:05:45,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 04:05:49,518 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.61s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 04:05:50,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:05:50,133 INFO L93 Difference]: Finished difference Result 11797 states and 18828 transitions. [2022-11-03 04:05:50,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:05:50,135 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-03 04:05:50,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:05:50,216 INFO L225 Difference]: With dead ends: 11797 [2022-11-03 04:05:50,216 INFO L226 Difference]: Without dead ends: 7646 [2022-11-03 04:05:50,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:05:50,267 INFO L413 NwaCegarLoop]: 7476 mSDtfsCounter, 6072 mSDsluCounter, 6104 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 5 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6072 SdHoareTripleChecker+Valid, 13358 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.8s IncrementalHoareTripleChecker+Time [2022-11-03 04:05:50,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6072 Valid, 13358 Invalid, 473 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5 Valid, 464 Invalid, 4 Unknown, 0 Unchecked, 14.8s Time] [2022-11-03 04:05:50,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7646 states. [2022-11-03 04:05:51,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7646 to 7641. [2022-11-03 04:05:52,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7641 states, 5217 states have (on average 1.4412497603986967) internal successors, (7519), 5234 states have internal predecessors, (7519), 2332 states have call successors, (2332), 95 states have call predecessors, (2332), 91 states have return successors, (2338), 2315 states have call predecessors, (2338), 2322 states have call successors, (2338) [2022-11-03 04:05:52,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7641 states to 7641 states and 12189 transitions. [2022-11-03 04:05:52,070 INFO L78 Accepts]: Start accepts. Automaton has 7641 states and 12189 transitions. Word has length 7 [2022-11-03 04:05:52,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:05:52,071 INFO L495 AbstractCegarLoop]: Abstraction has 7641 states and 12189 transitions. [2022-11-03 04:05:52,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:05:52,072 INFO L276 IsEmpty]: Start isEmpty. Operand 7641 states and 12189 transitions. [2022-11-03 04:05:52,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-03 04:05:52,073 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:05:52,074 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:05:52,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 04:05:52,074 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:05:52,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:05:52,076 INFO L85 PathProgramCache]: Analyzing trace with hash -264263685, now seen corresponding path program 1 times [2022-11-03 04:05:52,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:05:52,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130062653] [2022-11-03 04:05:52,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:05:52,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:05:52,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:05:52,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:05:52,844 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:05:52,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130062653] [2022-11-03 04:05:52,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130062653] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:05:52,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:05:52,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 04:05:52,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123124134] [2022-11-03 04:05:52,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:05:52,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:05:52,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:05:52,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:05:52,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:05:52,856 INFO L87 Difference]: Start difference. First operand 7641 states and 12189 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:05:55,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:05:57,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 04:05:59,458 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 04:06:02,782 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 04:06:05,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:06:07,739 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 04:06:08,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:06:08,271 INFO L93 Difference]: Finished difference Result 13556 states and 21604 transitions. [2022-11-03 04:06:08,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:06:08,273 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-03 04:06:08,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:06:08,387 INFO L225 Difference]: With dead ends: 13556 [2022-11-03 04:06:08,388 INFO L226 Difference]: Without dead ends: 13553 [2022-11-03 04:06:08,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:06:08,401 INFO L413 NwaCegarLoop]: 7318 mSDtfsCounter, 6539 mSDsluCounter, 5047 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6541 SdHoareTripleChecker+Valid, 12197 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.8s IncrementalHoareTripleChecker+Time [2022-11-03 04:06:08,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6541 Valid, 12197 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 402 Invalid, 4 Unknown, 0 Unchecked, 14.8s Time] [2022-11-03 04:06:08,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13553 states. [2022-11-03 04:06:10,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13553 to 13528. [2022-11-03 04:06:10,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13528 states, 9262 states have (on average 1.4414813215288276) internal successors, (13351), 9287 states have internal predecessors, (13351), 4104 states have call successors, (4104), 164 states have call predecessors, (4104), 161 states have return successors, (4114), 4082 states have call predecessors, (4114), 4095 states have call successors, (4114) [2022-11-03 04:06:10,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13528 states to 13528 states and 21569 transitions. [2022-11-03 04:06:10,857 INFO L78 Accepts]: Start accepts. Automaton has 13528 states and 21569 transitions. Word has length 8 [2022-11-03 04:06:10,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:06:10,857 INFO L495 AbstractCegarLoop]: Abstraction has 13528 states and 21569 transitions. [2022-11-03 04:06:10,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:06:10,857 INFO L276 IsEmpty]: Start isEmpty. Operand 13528 states and 21569 transitions. [2022-11-03 04:06:10,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-03 04:06:10,858 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:06:10,858 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:06:10,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 04:06:10,859 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:06:10,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:06:10,860 INFO L85 PathProgramCache]: Analyzing trace with hash 395275007, now seen corresponding path program 1 times [2022-11-03 04:06:10,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:06:10,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436306659] [2022-11-03 04:06:10,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:06:10,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:06:11,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:06:11,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:06:11,428 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:06:11,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436306659] [2022-11-03 04:06:11,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436306659] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:06:11,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:06:11,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 04:06:11,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94293530] [2022-11-03 04:06:11,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:06:11,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:06:11,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:06:11,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:06:11,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:06:11,432 INFO L87 Difference]: Start difference. First operand 13528 states and 21569 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:06:13,437 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:06:15,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 04:06:16,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:06:16,119 INFO L93 Difference]: Finished difference Result 13530 states and 21570 transitions. [2022-11-03 04:06:16,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:06:16,120 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-03 04:06:16,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:06:16,214 INFO L225 Difference]: With dead ends: 13530 [2022-11-03 04:06:16,215 INFO L226 Difference]: Without dead ends: 13527 [2022-11-03 04:06:16,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:06:16,231 INFO L413 NwaCegarLoop]: 6377 mSDtfsCounter, 6609 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6609 SdHoareTripleChecker+Valid, 6377 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:06:16,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6609 Valid, 6377 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-03 04:06:16,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13527 states. [2022-11-03 04:06:18,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13527 to 13527. [2022-11-03 04:06:18,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13527 states, 9262 states have (on average 1.4413733534873678) internal successors, (13350), 9286 states have internal predecessors, (13350), 4103 states have call successors, (4103), 164 states have call predecessors, (4103), 161 states have return successors, (4114), 4082 states have call predecessors, (4114), 4095 states have call successors, (4114) [2022-11-03 04:06:18,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13527 states to 13527 states and 21567 transitions. [2022-11-03 04:06:18,861 INFO L78 Accepts]: Start accepts. Automaton has 13527 states and 21567 transitions. Word has length 9 [2022-11-03 04:06:18,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:06:18,861 INFO L495 AbstractCegarLoop]: Abstraction has 13527 states and 21567 transitions. [2022-11-03 04:06:18,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:06:18,862 INFO L276 IsEmpty]: Start isEmpty. Operand 13527 states and 21567 transitions. [2022-11-03 04:06:18,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-03 04:06:18,863 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:06:18,863 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:06:18,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 04:06:18,863 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:06:18,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:06:18,864 INFO L85 PathProgramCache]: Analyzing trace with hash -633857154, now seen corresponding path program 1 times [2022-11-03 04:06:18,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:06:18,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117219446] [2022-11-03 04:06:18,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:06:18,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:06:19,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:06:19,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:06:19,547 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:06:19,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117219446] [2022-11-03 04:06:19,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117219446] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:06:19,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:06:19,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 04:06:19,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279802222] [2022-11-03 04:06:19,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:06:19,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:06:19,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:06:19,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:06:19,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:06:19,549 INFO L87 Difference]: Start difference. First operand 13527 states and 21567 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:06:23,625 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 04:06:28,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:06:28,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:06:28,477 INFO L93 Difference]: Finished difference Result 17539 states and 27868 transitions. [2022-11-03 04:06:28,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:06:28,478 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-03 04:06:28,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:06:28,724 INFO L225 Difference]: With dead ends: 17539 [2022-11-03 04:06:28,724 INFO L226 Difference]: Without dead ends: 17536 [2022-11-03 04:06:28,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:06:28,736 INFO L413 NwaCegarLoop]: 7314 mSDtfsCounter, 6581 mSDsluCounter, 5002 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6583 SdHoareTripleChecker+Valid, 12148 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:06:28,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6583 Valid, 12148 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 405 Invalid, 1 Unknown, 0 Unchecked, 8.4s Time] [2022-11-03 04:06:28,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17536 states. [2022-11-03 04:06:31,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17536 to 17511. [2022-11-03 04:06:31,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17511 states, 11998 states have (on average 1.4364894149024838) internal successors, (17235), 12031 states have internal predecessors, (17235), 5293 states have call successors, (5293), 222 states have call predecessors, (5293), 219 states have return successors, (5305), 5265 states have call predecessors, (5305), 5286 states have call successors, (5305) [2022-11-03 04:06:31,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17511 states to 17511 states and 27833 transitions. [2022-11-03 04:06:31,717 INFO L78 Accepts]: Start accepts. Automaton has 17511 states and 27833 transitions. Word has length 10 [2022-11-03 04:06:31,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:06:31,718 INFO L495 AbstractCegarLoop]: Abstraction has 17511 states and 27833 transitions. [2022-11-03 04:06:31,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:06:31,718 INFO L276 IsEmpty]: Start isEmpty. Operand 17511 states and 27833 transitions. [2022-11-03 04:06:31,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-03 04:06:31,719 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:06:31,720 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:06:31,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 04:06:31,720 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:06:31,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:06:31,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1822789090, now seen corresponding path program 1 times [2022-11-03 04:06:31,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:06:31,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954652351] [2022-11-03 04:06:31,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:06:31,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:06:32,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:06:32,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:06:32,400 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:06:32,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954652351] [2022-11-03 04:06:32,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954652351] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:06:32,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:06:32,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 04:06:32,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189098104] [2022-11-03 04:06:32,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:06:32,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:06:32,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:06:32,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:06:32,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:06:32,402 INFO L87 Difference]: Start difference. First operand 17511 states and 27833 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:06:35,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:06:36,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:06:39,028 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 04:06:41,753 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 04:06:43,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:06:43,965 INFO L93 Difference]: Finished difference Result 52414 states and 83850 transitions. [2022-11-03 04:06:43,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:06:43,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-03 04:06:43,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:06:44,196 INFO L225 Difference]: With dead ends: 52414 [2022-11-03 04:06:44,196 INFO L226 Difference]: Without dead ends: 34898 [2022-11-03 04:06:44,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:06:44,535 INFO L413 NwaCegarLoop]: 7719 mSDtfsCounter, 6563 mSDsluCounter, 6636 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6563 SdHoareTripleChecker+Valid, 14122 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:06:44,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6563 Valid, 14122 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 480 Invalid, 2 Unknown, 0 Unchecked, 10.3s Time] [2022-11-03 04:06:44,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34898 states. [2022-11-03 04:06:49,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34898 to 34867. [2022-11-03 04:06:49,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34867 states, 23904 states have (on average 1.4369561579651942) internal successors, (34349), 23966 states have internal predecessors, (34349), 10538 states have call successors, (10538), 429 states have call predecessors, (10538), 424 states have return successors, (10882), 10487 states have call predecessors, (10882), 10529 states have call successors, (10882) [2022-11-03 04:06:49,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34867 states to 34867 states and 55769 transitions. [2022-11-03 04:06:49,500 INFO L78 Accepts]: Start accepts. Automaton has 34867 states and 55769 transitions. Word has length 11 [2022-11-03 04:06:49,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:06:49,501 INFO L495 AbstractCegarLoop]: Abstraction has 34867 states and 55769 transitions. [2022-11-03 04:06:49,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:06:49,501 INFO L276 IsEmpty]: Start isEmpty. Operand 34867 states and 55769 transitions. [2022-11-03 04:06:49,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-03 04:06:49,516 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:06:49,517 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:06:49,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 04:06:49,517 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:06:49,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:06:49,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1663141763, now seen corresponding path program 1 times [2022-11-03 04:06:49,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:06:49,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436989087] [2022-11-03 04:06:49,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:06:49,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:06:49,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:06:50,734 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 04:06:50,734 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:06:50,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436989087] [2022-11-03 04:06:50,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436989087] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:06:50,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:06:50,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 04:06:50,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937410844] [2022-11-03 04:06:50,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:06:50,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 04:06:50,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:06:50,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 04:06:50,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 04:06:50,737 INFO L87 Difference]: Start difference. First operand 34867 states and 55769 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:06:54,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:06:55,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:06:56,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:06:59,025 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 04:07:01,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 04:07:03,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 04:07:06,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 04:07:09,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:07:09,277 INFO L93 Difference]: Finished difference Result 70119 states and 112417 transitions. [2022-11-03 04:07:09,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 04:07:09,277 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 53 [2022-11-03 04:07:09,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:07:09,487 INFO L225 Difference]: With dead ends: 70119 [2022-11-03 04:07:09,487 INFO L226 Difference]: Without dead ends: 35253 [2022-11-03 04:07:10,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:07:10,214 INFO L413 NwaCegarLoop]: 6372 mSDtfsCounter, 61 mSDsluCounter, 13163 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 31 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 19065 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.6s IncrementalHoareTripleChecker+Time [2022-11-03 04:07:10,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 19065 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 770 Invalid, 3 Unknown, 0 Unchecked, 16.6s Time] [2022-11-03 04:07:10,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35253 states. [2022-11-03 04:07:15,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35253 to 35251. [2022-11-03 04:07:15,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35251 states, 24186 states have (on average 1.4345902588274209) internal successors, (34697), 24248 states have internal predecessors, (34697), 10628 states have call successors, (10628), 441 states have call predecessors, (10628), 436 states have return successors, (10972), 10577 states have call predecessors, (10972), 10619 states have call successors, (10972) [2022-11-03 04:07:15,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35251 states to 35251 states and 56297 transitions. [2022-11-03 04:07:15,631 INFO L78 Accepts]: Start accepts. Automaton has 35251 states and 56297 transitions. Word has length 53 [2022-11-03 04:07:15,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:07:15,632 INFO L495 AbstractCegarLoop]: Abstraction has 35251 states and 56297 transitions. [2022-11-03 04:07:15,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:07:15,632 INFO L276 IsEmpty]: Start isEmpty. Operand 35251 states and 56297 transitions. [2022-11-03 04:07:15,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-03 04:07:15,640 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:07:15,640 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:07:15,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 04:07:15,643 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:07:15,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:07:15,643 INFO L85 PathProgramCache]: Analyzing trace with hash 527686513, now seen corresponding path program 1 times [2022-11-03 04:07:15,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:07:15,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575255385] [2022-11-03 04:07:15,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:07:15,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:07:15,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:07:17,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 04:07:17,279 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:07:17,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575255385] [2022-11-03 04:07:17,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575255385] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:07:17,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:07:17,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:07:17,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545310442] [2022-11-03 04:07:17,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:07:17,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:07:17,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:07:17,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:07:17,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:07:17,282 INFO L87 Difference]: Start difference. First operand 35251 states and 56297 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 04:07:20,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:07:22,142 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:07:24,438 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 04:07:26,576 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 04:07:29,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:07:29,495 INFO L93 Difference]: Finished difference Result 35358 states and 56425 transitions. [2022-11-03 04:07:29,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:07:29,497 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 54 [2022-11-03 04:07:29,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:07:29,662 INFO L225 Difference]: With dead ends: 35358 [2022-11-03 04:07:29,756 INFO L226 Difference]: Without dead ends: 35355 [2022-11-03 04:07:29,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:07:29,778 INFO L413 NwaCegarLoop]: 6388 mSDtfsCounter, 224 mSDsluCounter, 6401 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 12565 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2022-11-03 04:07:29,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 12565 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 472 Invalid, 2 Unknown, 0 Unchecked, 10.9s Time] [2022-11-03 04:07:29,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35355 states. [2022-11-03 04:07:34,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35355 to 35355. [2022-11-03 04:07:34,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35355 states, 24254 states have (on average 1.4341139605838211) internal successors, (34783), 24316 states have internal predecessors, (34783), 10646 states have call successors, (10646), 461 states have call predecessors, (10646), 454 states have return successors, (10990), 10593 states have call predecessors, (10990), 10637 states have call successors, (10990) [2022-11-03 04:07:34,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35355 states to 35355 states and 56419 transitions. [2022-11-03 04:07:34,859 INFO L78 Accepts]: Start accepts. Automaton has 35355 states and 56419 transitions. Word has length 54 [2022-11-03 04:07:34,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:07:34,862 INFO L495 AbstractCegarLoop]: Abstraction has 35355 states and 56419 transitions. [2022-11-03 04:07:34,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 04:07:34,862 INFO L276 IsEmpty]: Start isEmpty. Operand 35355 states and 56419 transitions. [2022-11-03 04:07:34,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-03 04:07:34,866 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:07:34,866 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:07:34,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 04:07:34,867 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:07:34,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:07:34,867 INFO L85 PathProgramCache]: Analyzing trace with hash -222032567, now seen corresponding path program 1 times [2022-11-03 04:07:34,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:07:34,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17660346] [2022-11-03 04:07:34,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:07:34,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:07:37,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:07:39,951 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 04:07:39,951 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:07:39,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17660346] [2022-11-03 04:07:39,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17660346] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:07:39,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:07:39,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:07:39,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162294867] [2022-11-03 04:07:39,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:07:39,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:07:39,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:07:39,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:07:39,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:07:39,954 INFO L87 Difference]: Start difference. First operand 35355 states and 56419 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 04:07:45,478 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 04:07:47,644 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 04:07:51,745 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 04:07:52,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:07:52,608 INFO L93 Difference]: Finished difference Result 70725 states and 120223 transitions. [2022-11-03 04:07:52,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:07:52,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 58 [2022-11-03 04:07:52,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:07:52,822 INFO L225 Difference]: With dead ends: 70725 [2022-11-03 04:07:52,822 INFO L226 Difference]: Without dead ends: 35371 [2022-11-03 04:07:53,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:07:53,158 INFO L413 NwaCegarLoop]: 6375 mSDtfsCounter, 0 mSDsluCounter, 6606 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12747 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:07:53,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12747 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 473 Invalid, 3 Unknown, 0 Unchecked, 11.0s Time] [2022-11-03 04:07:53,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35371 states. [2022-11-03 04:07:57,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35371 to 35371. [2022-11-03 04:07:57,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35371 states, 24270 states have (on average 1.433827770910589) internal successors, (34799), 24332 states have internal predecessors, (34799), 10646 states have call successors, (10646), 461 states have call predecessors, (10646), 454 states have return successors, (10990), 10593 states have call predecessors, (10990), 10637 states have call successors, (10990) [2022-11-03 04:07:57,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35371 states to 35371 states and 56435 transitions. [2022-11-03 04:07:57,967 INFO L78 Accepts]: Start accepts. Automaton has 35371 states and 56435 transitions. Word has length 58 [2022-11-03 04:07:57,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:07:57,968 INFO L495 AbstractCegarLoop]: Abstraction has 35371 states and 56435 transitions. [2022-11-03 04:07:57,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 04:07:57,969 INFO L276 IsEmpty]: Start isEmpty. Operand 35371 states and 56435 transitions. [2022-11-03 04:07:57,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-03 04:07:57,972 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:07:57,972 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:07:57,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 04:07:57,973 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:07:57,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:07:57,973 INFO L85 PathProgramCache]: Analyzing trace with hash 31037608, now seen corresponding path program 1 times [2022-11-03 04:07:57,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:07:57,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399580798] [2022-11-03 04:07:57,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:07:57,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:08:02,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:03,657 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 04:08:03,657 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:08:03,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399580798] [2022-11-03 04:08:03,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399580798] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:08:03,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879388979] [2022-11-03 04:08:03,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:03,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:08:03,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3892d7-644c-42e3-b482-314e7e508b24/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:08:03,662 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3892d7-644c-42e3-b482-314e7e508b24/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:08:03,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3892d7-644c-42e3-b482-314e7e508b24/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 04:08:06,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:06,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 7999 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:08:06,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:08:06,621 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:08:06,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:08:06,736 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 04:08:06,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879388979] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 04:08:06,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 04:08:06,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 6 [2022-11-03 04:08:06,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210474003] [2022-11-03 04:08:06,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:08:06,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 04:08:06,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:08:06,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 04:08:06,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:08:06,739 INFO L87 Difference]: Start difference. First operand 35371 states and 56435 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 04:08:10,458 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:08:12,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 04:08:15,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 04:08:19,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 04:08:21,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:08:21,334 INFO L93 Difference]: Finished difference Result 70757 states and 120255 transitions. [2022-11-03 04:08:21,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 04:08:21,335 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 59 [2022-11-03 04:08:21,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:08:21,548 INFO L225 Difference]: With dead ends: 70757 [2022-11-03 04:08:21,548 INFO L226 Difference]: Without dead ends: 35387 [2022-11-03 04:08:22,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 114 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:08:22,107 INFO L413 NwaCegarLoop]: 6373 mSDtfsCounter, 10 mSDsluCounter, 6603 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 12743 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2022-11-03 04:08:22,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 12743 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 475 Invalid, 4 Unknown, 0 Unchecked, 12.6s Time] [2022-11-03 04:08:22,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35387 states. [2022-11-03 04:08:27,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35387 to 35387. [2022-11-03 04:08:27,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35387 states, 24286 states have (on average 1.433541958329902) internal successors, (34815), 24348 states have internal predecessors, (34815), 10646 states have call successors, (10646), 461 states have call predecessors, (10646), 454 states have return successors, (10990), 10593 states have call predecessors, (10990), 10637 states have call successors, (10990) [2022-11-03 04:08:27,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35387 states to 35387 states and 56451 transitions. [2022-11-03 04:08:27,338 INFO L78 Accepts]: Start accepts. Automaton has 35387 states and 56451 transitions. Word has length 59 [2022-11-03 04:08:27,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:08:27,339 INFO L495 AbstractCegarLoop]: Abstraction has 35387 states and 56451 transitions. [2022-11-03 04:08:27,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 04:08:27,339 INFO L276 IsEmpty]: Start isEmpty. Operand 35387 states and 56451 transitions. [2022-11-03 04:08:27,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-03 04:08:27,343 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:08:27,343 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:08:27,393 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3892d7-644c-42e3-b482-314e7e508b24/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-03 04:08:27,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3892d7-644c-42e3-b482-314e7e508b24/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:08:27,571 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:08:27,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:08:27,572 INFO L85 PathProgramCache]: Analyzing trace with hash -2081450457, now seen corresponding path program 1 times [2022-11-03 04:08:27,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:08:27,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648349381] [2022-11-03 04:08:27,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:27,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms