./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-063f96c-1-144_1a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b47288d-8b1c-4aaf-81ae-41ec54769f08/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b47288d-8b1c-4aaf-81ae-41ec54769f08/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b47288d-8b1c-4aaf-81ae-41ec54769f08/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b47288d-8b1c-4aaf-81ae-41ec54769f08/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-063f96c-1-144_1a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b47288d-8b1c-4aaf-81ae-41ec54769f08/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b47288d-8b1c-4aaf-81ae-41ec54769f08/bin/utaipan-eEHZpOm5b7 --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 1f258bb699a014f11eb0babe874a45670072f33ce1154e31a2f0110b34e4ef74 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 20:32:22,486 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 20:32:22,488 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 20:32:22,536 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 20:32:22,537 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 20:32:22,542 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 20:32:22,545 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 20:32:22,549 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 20:32:22,552 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 20:32:22,559 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 20:32:22,561 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 20:32:22,563 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 20:32:22,563 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 20:32:22,566 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 20:32:22,568 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 20:32:22,577 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 20:32:22,579 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 20:32:22,580 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 20:32:22,583 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 20:32:22,593 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 20:32:22,595 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 20:32:22,597 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 20:32:22,600 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 20:32:22,601 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 20:32:22,605 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 20:32:22,606 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 20:32:22,606 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 20:32:22,609 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 20:32:22,609 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 20:32:22,611 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 20:32:22,612 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 20:32:22,613 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 20:32:22,615 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 20:32:22,616 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 20:32:22,618 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 20:32:22,618 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 20:32:22,619 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 20:32:22,619 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 20:32:22,619 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 20:32:22,620 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 20:32:22,621 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 20:32:22,622 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b47288d-8b1c-4aaf-81ae-41ec54769f08/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 20:32:22,664 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 20:32:22,664 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 20:32:22,665 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 20:32:22,665 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 20:32:22,666 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 20:32:22,666 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 20:32:22,666 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 20:32:22,666 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 20:32:22,667 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 20:32:22,667 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 20:32:22,667 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 20:32:22,667 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 20:32:22,667 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 20:32:22,668 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 20:32:22,668 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 20:32:22,668 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 20:32:22,668 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 20:32:22,668 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 20:32:22,669 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 20:32:22,670 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 20:32:22,670 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 20:32:22,670 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 20:32:22,670 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 20:32:22,670 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 20:32:22,671 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 20:32:22,671 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 20:32:22,671 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 20:32:22,671 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 20:32:22,672 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 20:32:22,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:32:22,672 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 20:32:22,672 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 20:32:22,672 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 20:32:22,673 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 20:32:22,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 20:32:22,673 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 20:32:22,673 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 20:32:22,673 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 20:32:22,674 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_9b47288d-8b1c-4aaf-81ae-41ec54769f08/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b47288d-8b1c-4aaf-81ae-41ec54769f08/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1f258bb699a014f11eb0babe874a45670072f33ce1154e31a2f0110b34e4ef74 [2021-11-25 20:32:22,992 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 20:32:23,036 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 20:32:23,039 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 20:32:23,040 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 20:32:23,041 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 20:32:23,042 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b47288d-8b1c-4aaf-81ae-41ec54769f08/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-063f96c-1-144_1a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i [2021-11-25 20:32:23,117 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b47288d-8b1c-4aaf-81ae-41ec54769f08/bin/utaipan-eEHZpOm5b7/data/6c8f77d15/6f609fd114da4f848496d8e189294d61/FLAG2021e4c79 [2021-11-25 20:32:24,099 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 20:32:24,100 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b47288d-8b1c-4aaf-81ae-41ec54769f08/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-063f96c-1-144_1a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i [2021-11-25 20:32:24,140 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b47288d-8b1c-4aaf-81ae-41ec54769f08/bin/utaipan-eEHZpOm5b7/data/6c8f77d15/6f609fd114da4f848496d8e189294d61/FLAG2021e4c79 [2021-11-25 20:32:24,152 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b47288d-8b1c-4aaf-81ae-41ec54769f08/bin/utaipan-eEHZpOm5b7/data/6c8f77d15/6f609fd114da4f848496d8e189294d61 [2021-11-25 20:32:24,154 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 20:32:24,156 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 20:32:24,158 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 20:32:24,158 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 20:32:24,162 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 20:32:24,163 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:32:24" (1/1) ... [2021-11-25 20:32:24,166 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@272f667a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:32:24, skipping insertion in model container [2021-11-25 20:32:24,167 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:32:24" (1/1) ... [2021-11-25 20:32:24,174 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 20:32:24,304 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:32:26,247 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_9b47288d-8b1c-4aaf-81ae-41ec54769f08/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-063f96c-1-144_1a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i[239447,239460] [2021-11-25 20:32:26,294 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:32:26,316 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 20:32:26,691 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_9b47288d-8b1c-4aaf-81ae-41ec54769f08/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-063f96c-1-144_1a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i[239447,239460] [2021-11-25 20:32:26,707 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:32:26,827 INFO L208 MainTranslator]: Completed translation [2021-11-25 20:32:26,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:32:26 WrapperNode [2021-11-25 20:32:26,827 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 20:32:26,828 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 20:32:26,829 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 20:32:26,829 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 20:32:26,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:32:26" (1/1) ... [2021-11-25 20:32:26,928 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:32:26" (1/1) ... [2021-11-25 20:32:27,174 INFO L137 Inliner]: procedures = 261, calls = 1811, calls flagged for inlining = 104, calls inlined = 100, statements flattened = 4510 [2021-11-25 20:32:27,174 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 20:32:27,175 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 20:32:27,176 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 20:32:27,176 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 20:32:27,185 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:32:26" (1/1) ... [2021-11-25 20:32:27,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:32:26" (1/1) ... [2021-11-25 20:32:27,211 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:32:26" (1/1) ... [2021-11-25 20:32:27,212 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:32:26" (1/1) ... [2021-11-25 20:32:27,322 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:32:26" (1/1) ... [2021-11-25 20:32:27,357 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:32:26" (1/1) ... [2021-11-25 20:32:27,392 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:32:26" (1/1) ... [2021-11-25 20:32:27,431 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 20:32:27,432 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 20:32:27,433 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 20:32:27,433 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 20:32:27,434 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:32:26" (1/1) ... [2021-11-25 20:32:27,442 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:32:27,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b47288d-8b1c-4aaf-81ae-41ec54769f08/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:32:27,474 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b47288d-8b1c-4aaf-81ae-41ec54769f08/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 20:32:27,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b47288d-8b1c-4aaf-81ae-41ec54769f08/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 20:32:27,532 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-25 20:32:27,532 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-25 20:32:27,533 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_12 [2021-11-25 20:32:27,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_12 [2021-11-25 20:32:27,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 20:32:27,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 20:32:27,533 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 20:32:27,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 20:32:27,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 20:32:27,534 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 20:32:27,534 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_delete [2021-11-25 20:32:27,534 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_delete [2021-11-25 20:32:27,534 INFO L130 BoogieDeclarations]: Found specification of procedure usb_sg_wait [2021-11-25 20:32:27,535 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_sg_wait [2021-11-25 20:32:27,535 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_usb_bulk_msg [2021-11-25 20:32:27,535 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_usb_bulk_msg [2021-11-25 20:32:27,535 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-11-25 20:32:27,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-11-25 20:32:27,536 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion_timeout [2021-11-25 20:32:27,536 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion_timeout [2021-11-25 20:32:27,536 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 20:32:27,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 20:32:27,536 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2021-11-25 20:32:27,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2021-11-25 20:32:27,537 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2021-11-25 20:32:27,537 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2021-11-25 20:32:27,537 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_signal_sdio_irq [2021-11-25 20:32:27,537 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_signal_sdio_irq [2021-11-25 20:32:27,537 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_50 [2021-11-25 20:32:27,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_50 [2021-11-25 20:32:27,538 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-25 20:32:27,538 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-25 20:32:27,539 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-25 20:32:27,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-25 20:32:27,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 20:32:27,539 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 20:32:27,539 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-25 20:32:27,540 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-25 20:32:27,540 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_detect_change [2021-11-25 20:32:27,540 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_detect_change [2021-11-25 20:32:27,540 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2021-11-25 20:32:27,540 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2021-11-25 20:32:27,541 INFO L130 BoogieDeclarations]: Found specification of procedure usb_sg_cancel [2021-11-25 20:32:27,541 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_sg_cancel [2021-11-25 20:32:27,541 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-25 20:32:27,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-25 20:32:27,542 INFO L130 BoogieDeclarations]: Found specification of procedure usb_sg_init [2021-11-25 20:32:27,542 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_sg_init [2021-11-25 20:32:27,543 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_29 [2021-11-25 20:32:27,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_29 [2021-11-25 20:32:27,544 INFO L130 BoogieDeclarations]: Found specification of procedure __command_read_data [2021-11-25 20:32:27,544 INFO L138 BoogieDeclarations]: Found implementation of procedure __command_read_data [2021-11-25 20:32:27,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 20:32:27,544 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_27 [2021-11-25 20:32:27,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_27 [2021-11-25 20:32:27,544 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-25 20:32:27,545 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-25 20:32:27,545 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unlink_urb [2021-11-25 20:32:27,545 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unlink_urb [2021-11-25 20:32:27,545 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 20:32:27,546 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_13 [2021-11-25 20:32:27,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_13 [2021-11-25 20:32:27,546 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-11-25 20:32:27,546 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-11-25 20:32:27,547 INFO L130 BoogieDeclarations]: Found specification of procedure irqpoll_out_completed [2021-11-25 20:32:27,547 INFO L138 BoogieDeclarations]: Found implementation of procedure irqpoll_out_completed [2021-11-25 20:32:27,547 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_disconnect [2021-11-25 20:32:27,547 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_disconnect [2021-11-25 20:32:27,547 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_3 [2021-11-25 20:32:27,547 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_3 [2021-11-25 20:32:27,548 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_15 [2021-11-25 20:32:27,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_15 [2021-11-25 20:32:27,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 20:32:27,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 20:32:27,549 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-11-25 20:32:27,549 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-11-25 20:32:27,549 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-25 20:32:27,550 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-25 20:32:27,550 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_enable_sdio_irq [2021-11-25 20:32:27,550 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_enable_sdio_irq [2021-11-25 20:32:27,550 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-25 20:32:27,551 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-25 20:32:27,551 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-25 20:32:27,551 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-25 20:32:27,552 INFO L130 BoogieDeclarations]: Found specification of procedure add_offloaded_reg [2021-11-25 20:32:27,552 INFO L138 BoogieDeclarations]: Found implementation of procedure add_offloaded_reg [2021-11-25 20:32:27,552 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2021-11-25 20:32:27,553 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2021-11-25 20:32:27,553 INFO L130 BoogieDeclarations]: Found specification of procedure command_out_completed [2021-11-25 20:32:27,553 INFO L138 BoogieDeclarations]: Found implementation of procedure command_out_completed [2021-11-25 20:32:27,553 INFO L130 BoogieDeclarations]: Found specification of procedure roundup_to_multiple_of_64 [2021-11-25 20:32:27,553 INFO L138 BoogieDeclarations]: Found implementation of procedure roundup_to_multiple_of_64 [2021-11-25 20:32:27,554 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2021-11-25 20:32:27,554 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2021-11-25 20:32:27,555 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2021-11-25 20:32:27,555 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2021-11-25 20:32:27,555 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 20:32:27,555 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_cmndwork_thread [2021-11-25 20:32:27,555 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_cmndwork_thread [2021-11-25 20:32:27,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 20:32:27,556 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_4 [2021-11-25 20:32:27,556 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_4 [2021-11-25 20:32:27,556 INFO L130 BoogieDeclarations]: Found specification of procedure send_command [2021-11-25 20:32:27,556 INFO L138 BoogieDeclarations]: Found implementation of procedure send_command [2021-11-25 20:32:27,556 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get [2021-11-25 20:32:27,557 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get [2021-11-25 20:32:27,557 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 20:32:27,557 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2021-11-25 20:32:27,557 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2021-11-25 20:32:27,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 20:32:27,558 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 20:32:27,559 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-11-25 20:32:27,561 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-11-25 20:32:27,562 INFO L130 BoogieDeclarations]: Found specification of procedure send_irqpoll [2021-11-25 20:32:27,562 INFO L138 BoogieDeclarations]: Found implementation of procedure send_irqpoll [2021-11-25 20:32:27,562 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-11-25 20:32:27,563 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-11-25 20:32:27,564 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-25 20:32:27,565 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-25 20:32:27,565 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2021-11-25 20:32:27,565 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2021-11-25 20:32:27,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 20:32:27,572 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_response_error [2021-11-25 20:32:27,572 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_response_error [2021-11-25 20:32:27,572 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_bulk_out [2021-11-25 20:32:27,572 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_bulk_out [2021-11-25 20:32:27,572 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_free_host [2021-11-25 20:32:27,573 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_free_host [2021-11-25 20:32:27,573 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 20:32:27,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 20:32:27,573 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_32 [2021-11-25 20:32:27,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_32 [2021-11-25 20:32:27,573 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-25 20:32:27,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-25 20:32:27,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 20:32:27,574 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_queue_poll_work [2021-11-25 20:32:27,574 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_queue_poll_work [2021-11-25 20:32:27,574 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_4 [2021-11-25 20:32:27,574 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_4 [2021-11-25 20:32:27,574 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-11-25 20:32:27,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-11-25 20:32:27,575 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2021-11-25 20:32:27,575 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2021-11-25 20:32:27,575 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_bulk_in [2021-11-25 20:32:27,575 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_bulk_in [2021-11-25 20:32:27,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 20:32:27,576 INFO L130 BoogieDeclarations]: Found specification of procedure sg_copy_to_buffer [2021-11-25 20:32:27,576 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_copy_to_buffer [2021-11-25 20:32:27,576 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put_9 [2021-11-25 20:32:27,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put_9 [2021-11-25 20:32:27,576 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-25 20:32:27,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-25 20:32:27,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 20:32:27,577 INFO L130 BoogieDeclarations]: Found specification of procedure __download_offload_pseudocode [2021-11-25 20:32:27,577 INFO L138 BoogieDeclarations]: Found implementation of procedure __download_offload_pseudocode [2021-11-25 20:32:27,577 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 20:32:27,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 20:32:27,577 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_4 [2021-11-25 20:32:27,577 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_4 [2021-11-25 20:32:27,578 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_pollwork_thread [2021-11-25 20:32:27,578 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_pollwork_thread [2021-11-25 20:32:27,578 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_InterfaceNumber [2021-11-25 20:32:27,578 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_InterfaceNumber [2021-11-25 20:32:27,578 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2021-11-25 20:32:27,578 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2021-11-25 20:32:27,579 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-25 20:32:27,579 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-25 20:32:27,579 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-11-25 20:32:27,579 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-11-25 20:32:27,579 INFO L130 BoogieDeclarations]: Found specification of procedure __do_poll [2021-11-25 20:32:27,579 INFO L138 BoogieDeclarations]: Found implementation of procedure __do_poll [2021-11-25 20:32:27,579 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_3 [2021-11-25 20:32:27,580 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_3 [2021-11-25 20:32:27,580 INFO L130 BoogieDeclarations]: Found specification of procedure new_system_port_status [2021-11-25 20:32:27,580 INFO L138 BoogieDeclarations]: Found implementation of procedure new_system_port_status [2021-11-25 20:32:27,580 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_request_done [2021-11-25 20:32:27,580 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_request_done [2021-11-25 20:32:27,580 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-25 20:32:27,581 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-25 20:32:27,581 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-11-25 20:32:27,581 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-11-25 20:32:27,581 INFO L130 BoogieDeclarations]: Found specification of procedure __command_write_data [2021-11-25 20:32:27,581 INFO L138 BoogieDeclarations]: Found implementation of procedure __command_write_data [2021-11-25 20:32:27,581 INFO L130 BoogieDeclarations]: Found specification of procedure request_firmware [2021-11-25 20:32:27,581 INFO L138 BoogieDeclarations]: Found implementation of procedure request_firmware [2021-11-25 20:32:27,582 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2021-11-25 20:32:27,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2021-11-25 20:32:27,582 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-25 20:32:27,582 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_47 [2021-11-25 20:32:27,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_47 [2021-11-25 20:32:27,582 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2021-11-25 20:32:27,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2021-11-25 20:32:27,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 20:32:27,583 INFO L130 BoogieDeclarations]: Found specification of procedure usb_string [2021-11-25 20:32:27,583 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_string [2021-11-25 20:32:27,583 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_priv [2021-11-25 20:32:27,583 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_priv [2021-11-25 20:32:27,584 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2021-11-25 20:32:27,584 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2021-11-25 20:32:27,584 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_deadwork_thread [2021-11-25 20:32:27,584 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_deadwork_thread [2021-11-25 20:32:27,584 INFO L130 BoogieDeclarations]: Found specification of procedure check_vub300_port_status [2021-11-25 20:32:27,584 INFO L138 BoogieDeclarations]: Found implementation of procedure check_vub300_port_status [2021-11-25 20:32:27,584 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-25 20:32:27,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 20:32:27,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 20:32:28,441 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 20:32:28,444 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 20:32:29,710 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 20:32:33,406 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 20:32:35,249 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 20:32:35,249 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 20:32:35,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:32:35 BoogieIcfgContainer [2021-11-25 20:32:35,254 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 20:32:35,256 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 20:32:35,256 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 20:32:35,259 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 20:32:35,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:32:24" (1/3) ... [2021-11-25 20:32:35,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2da15614 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:32:35, skipping insertion in model container [2021-11-25 20:32:35,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:32:26" (2/3) ... [2021-11-25 20:32:35,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2da15614 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:32:35, skipping insertion in model container [2021-11-25 20:32:35,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:32:35" (3/3) ... [2021-11-25 20:32:35,262 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-063f96c-1-144_1a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i [2021-11-25 20:32:35,268 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 20:32:35,268 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 20:32:35,323 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 20:32:35,330 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 20:32:35,330 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 20:32:35,378 INFO L276 IsEmpty]: Start isEmpty. Operand has 1222 states, 745 states have (on average 1.3919463087248323) internal successors, (1037), 811 states have internal predecessors, (1037), 382 states have call successors, (382), 94 states have call predecessors, (382), 93 states have return successors, (373), 347 states have call predecessors, (373), 373 states have call successors, (373) [2021-11-25 20:32:35,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-25 20:32:35,397 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:32:35,398 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:32:35,399 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:32:35,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:32:35,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1088779695, now seen corresponding path program 1 times [2021-11-25 20:32:35,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:32:35,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778776176] [2021-11-25 20:32:35,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:32:35,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:32:35,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:32:35,961 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-11-25 20:32:35,962 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:32:35,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778776176] [2021-11-25 20:32:35,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778776176] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:32:35,963 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:32:35,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:32:35,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170607550] [2021-11-25 20:32:35,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:32:35,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:32:35,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:32:35,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:32:35,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:32:36,003 INFO L87 Difference]: Start difference. First operand has 1222 states, 745 states have (on average 1.3919463087248323) internal successors, (1037), 811 states have internal predecessors, (1037), 382 states have call successors, (382), 94 states have call predecessors, (382), 93 states have return successors, (373), 347 states have call predecessors, (373), 373 states have call successors, (373) Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-25 20:32:38,419 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:32:41,711 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:32:42,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:32:42,230 INFO L93 Difference]: Finished difference Result 2267 states and 3359 transitions. [2021-11-25 20:32:42,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:32:42,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 88 [2021-11-25 20:32:42,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:32:42,275 INFO L225 Difference]: With dead ends: 2267 [2021-11-25 20:32:42,275 INFO L226 Difference]: Without dead ends: 2233 [2021-11-25 20:32:42,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:32:42,286 INFO L933 BasicCegarLoop]: 2034 mSDtfsCounter, 1517 mSDsluCounter, 1777 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1517 SdHoareTripleChecker+Valid, 3652 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:32:42,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1517 Valid, 3652 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 339 Invalid, 2 Unknown, 0 Unchecked, 6.0s Time] [2021-11-25 20:32:42,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2233 states. [2021-11-25 20:32:42,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2233 to 2223. [2021-11-25 20:32:42,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2223 states, 1375 states have (on average 1.3905454545454545) internal successors, (1912), 1483 states have internal predecessors, (1912), 675 states have call successors, (675), 174 states have call predecessors, (675), 172 states have return successors, (696), 615 states have call predecessors, (696), 671 states have call successors, (696) [2021-11-25 20:32:42,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2223 states to 2223 states and 3283 transitions. [2021-11-25 20:32:42,505 INFO L78 Accepts]: Start accepts. Automaton has 2223 states and 3283 transitions. Word has length 88 [2021-11-25 20:32:42,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:32:42,506 INFO L470 AbstractCegarLoop]: Abstraction has 2223 states and 3283 transitions. [2021-11-25 20:32:42,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-25 20:32:42,507 INFO L276 IsEmpty]: Start isEmpty. Operand 2223 states and 3283 transitions. [2021-11-25 20:32:42,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-25 20:32:42,514 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:32:42,515 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:32:42,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 20:32:42,516 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:32:42,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:32:42,520 INFO L85 PathProgramCache]: Analyzing trace with hash -608113645, now seen corresponding path program 1 times [2021-11-25 20:32:42,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:32:42,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288281066] [2021-11-25 20:32:42,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:32:42,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:32:42,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:32:42,726 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-11-25 20:32:42,727 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:32:42,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288281066] [2021-11-25 20:32:42,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288281066] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:32:42,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:32:42,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:32:42,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628487450] [2021-11-25 20:32:42,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:32:42,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:32:42,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:32:42,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:32:42,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:32:42,731 INFO L87 Difference]: Start difference. First operand 2223 states and 3283 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-25 20:32:44,963 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:32:48,127 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:32:48,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:32:48,661 INFO L93 Difference]: Finished difference Result 3295 states and 4905 transitions. [2021-11-25 20:32:48,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:32:48,662 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 89 [2021-11-25 20:32:48,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:32:48,693 INFO L225 Difference]: With dead ends: 3295 [2021-11-25 20:32:48,693 INFO L226 Difference]: Without dead ends: 3292 [2021-11-25 20:32:48,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:32:48,706 INFO L933 BasicCegarLoop]: 2023 mSDtfsCounter, 1543 mSDsluCounter, 1762 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1543 SdHoareTripleChecker+Valid, 3625 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:32:48,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1543 Valid, 3625 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 339 Invalid, 2 Unknown, 0 Unchecked, 5.7s Time] [2021-11-25 20:32:48,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3292 states. [2021-11-25 20:32:48,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3292 to 3286. [2021-11-25 20:32:48,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3286 states, 2038 states have (on average 1.392541707556428) internal successors, (2838), 2195 states have internal predecessors, (2838), 990 states have call successors, (990), 259 states have call predecessors, (990), 257 states have return successors, (1068), 905 states have call predecessors, (1068), 986 states have call successors, (1068) [2021-11-25 20:32:48,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3286 states to 3286 states and 4896 transitions. [2021-11-25 20:32:48,931 INFO L78 Accepts]: Start accepts. Automaton has 3286 states and 4896 transitions. Word has length 89 [2021-11-25 20:32:48,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:32:48,932 INFO L470 AbstractCegarLoop]: Abstraction has 3286 states and 4896 transitions. [2021-11-25 20:32:48,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-25 20:32:48,933 INFO L276 IsEmpty]: Start isEmpty. Operand 3286 states and 4896 transitions. [2021-11-25 20:32:49,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-25 20:32:49,017 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:32:49,017 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:32:49,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 20:32:49,017 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:32:49,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:32:49,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1672194766, now seen corresponding path program 1 times [2021-11-25 20:32:49,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:32:49,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159939278] [2021-11-25 20:32:49,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:32:49,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:32:49,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:32:49,269 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-11-25 20:32:49,270 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:32:49,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159939278] [2021-11-25 20:32:49,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159939278] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:32:49,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:32:49,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:32:49,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129338417] [2021-11-25 20:32:49,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:32:49,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:32:49,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:32:49,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:32:49,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:32:49,278 INFO L87 Difference]: Start difference. First operand 3286 states and 4896 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-25 20:32:51,511 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:32:54,507 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:32:55,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:32:55,262 INFO L93 Difference]: Finished difference Result 4379 states and 6498 transitions. [2021-11-25 20:32:55,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:32:55,262 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 90 [2021-11-25 20:32:55,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:32:55,301 INFO L225 Difference]: With dead ends: 4379 [2021-11-25 20:32:55,302 INFO L226 Difference]: Without dead ends: 4376 [2021-11-25 20:32:55,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:32:55,317 INFO L933 BasicCegarLoop]: 2022 mSDtfsCounter, 1588 mSDsluCounter, 1737 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1589 SdHoareTripleChecker+Valid, 3597 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:32:55,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1589 Valid, 3597 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 338 Invalid, 2 Unknown, 0 Unchecked, 5.8s Time] [2021-11-25 20:32:55,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4376 states. [2021-11-25 20:32:55,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4376 to 4369. [2021-11-25 20:32:55,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4369 states, 2713 states have (on average 1.3929229635090306) internal successors, (3779), 2919 states have internal predecessors, (3779), 1315 states have call successors, (1315), 342 states have call predecessors, (1315), 340 states have return successors, (1394), 1205 states have call predecessors, (1394), 1311 states have call successors, (1394) [2021-11-25 20:32:55,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4369 states to 4369 states and 6488 transitions. [2021-11-25 20:32:55,577 INFO L78 Accepts]: Start accepts. Automaton has 4369 states and 6488 transitions. Word has length 90 [2021-11-25 20:32:55,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:32:55,578 INFO L470 AbstractCegarLoop]: Abstraction has 4369 states and 6488 transitions. [2021-11-25 20:32:55,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-25 20:32:55,578 INFO L276 IsEmpty]: Start isEmpty. Operand 4369 states and 6488 transitions. [2021-11-25 20:32:55,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-25 20:32:55,581 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:32:55,581 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:32:55,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 20:32:55,582 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:32:55,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:32:55,582 INFO L85 PathProgramCache]: Analyzing trace with hash -298966282, now seen corresponding path program 1 times [2021-11-25 20:32:55,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:32:55,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855576915] [2021-11-25 20:32:55,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:32:55,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:32:55,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:32:55,812 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-11-25 20:32:55,813 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:32:55,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855576915] [2021-11-25 20:32:55,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855576915] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:32:55,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:32:55,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:32:55,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419275302] [2021-11-25 20:32:55,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:32:55,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:32:55,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:32:55,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:32:55,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:32:55,815 INFO L87 Difference]: Start difference. First operand 4369 states and 6488 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-25 20:32:58,124 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:33:01,077 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:33:01,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:33:01,810 INFO L93 Difference]: Finished difference Result 4380 states and 6498 transitions. [2021-11-25 20:33:01,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:33:01,811 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), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 91 [2021-11-25 20:33:01,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:33:01,845 INFO L225 Difference]: With dead ends: 4380 [2021-11-25 20:33:01,845 INFO L226 Difference]: Without dead ends: 4352 [2021-11-25 20:33:01,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:33:01,860 INFO L933 BasicCegarLoop]: 2023 mSDtfsCounter, 1585 mSDsluCounter, 1740 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1586 SdHoareTripleChecker+Valid, 3601 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:33:01,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1586 Valid, 3601 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 337 Invalid, 2 Unknown, 0 Unchecked, 5.8s Time] [2021-11-25 20:33:01,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4352 states. [2021-11-25 20:33:02,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4352 to 4345. [2021-11-25 20:33:02,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4345 states, 2702 states have (on average 1.3930421909696522) internal successors, (3764), 2908 states have internal predecessors, (3764), 1303 states have call successors, (1303), 341 states have call predecessors, (1303), 339 states have return successors, (1382), 1193 states have call predecessors, (1382), 1299 states have call successors, (1382) [2021-11-25 20:33:02,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4345 states to 4345 states and 6449 transitions. [2021-11-25 20:33:02,126 INFO L78 Accepts]: Start accepts. Automaton has 4345 states and 6449 transitions. Word has length 91 [2021-11-25 20:33:02,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:33:02,128 INFO L470 AbstractCegarLoop]: Abstraction has 4345 states and 6449 transitions. [2021-11-25 20:33:02,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-25 20:33:02,129 INFO L276 IsEmpty]: Start isEmpty. Operand 4345 states and 6449 transitions. [2021-11-25 20:33:02,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-25 20:33:02,143 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:33:02,144 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:33:02,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 20:33:02,144 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:33:02,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:33:02,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1983542724, now seen corresponding path program 1 times [2021-11-25 20:33:02,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:33:02,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990045096] [2021-11-25 20:33:02,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:33:02,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:33:02,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:33:02,402 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-11-25 20:33:02,403 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:33:02,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990045096] [2021-11-25 20:33:02,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990045096] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:33:02,403 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:33:02,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:33:02,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667288603] [2021-11-25 20:33:02,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:33:02,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:33:02,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:33:02,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:33:02,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:33:02,409 INFO L87 Difference]: Start difference. First operand 4345 states and 6449 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-25 20:33:04,862 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:33:07,852 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:33:08,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:33:08,690 INFO L93 Difference]: Finished difference Result 12643 states and 18758 transitions. [2021-11-25 20:33:08,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:33:08,691 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 129 [2021-11-25 20:33:08,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:33:08,765 INFO L225 Difference]: With dead ends: 12643 [2021-11-25 20:33:08,765 INFO L226 Difference]: Without dead ends: 8315 [2021-11-25 20:33:08,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:33:08,803 INFO L933 BasicCegarLoop]: 2070 mSDtfsCounter, 1523 mSDsluCounter, 1690 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1524 SdHoareTripleChecker+Valid, 3606 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2021-11-25 20:33:08,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1524 Valid, 3606 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 361 Invalid, 2 Unknown, 0 Unchecked, 5.9s Time] [2021-11-25 20:33:08,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8315 states. [2021-11-25 20:33:09,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8315 to 8296. [2021-11-25 20:33:09,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8296 states, 5175 states have (on average 1.3955555555555557) internal successors, (7222), 5580 states have internal predecessors, (7222), 2460 states have call successors, (2460), 663 states have call predecessors, (2460), 660 states have return successors, (2623), 2246 states have call predecessors, (2623), 2456 states have call successors, (2623) [2021-11-25 20:33:09,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8296 states to 8296 states and 12305 transitions. [2021-11-25 20:33:09,346 INFO L78 Accepts]: Start accepts. Automaton has 8296 states and 12305 transitions. Word has length 129 [2021-11-25 20:33:09,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:33:09,347 INFO L470 AbstractCegarLoop]: Abstraction has 8296 states and 12305 transitions. [2021-11-25 20:33:09,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-25 20:33:09,347 INFO L276 IsEmpty]: Start isEmpty. Operand 8296 states and 12305 transitions. [2021-11-25 20:33:09,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-25 20:33:09,370 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:33:09,371 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:33:09,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 20:33:09,371 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:33:09,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:33:09,372 INFO L85 PathProgramCache]: Analyzing trace with hash -2001016119, now seen corresponding path program 1 times [2021-11-25 20:33:09,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:33:09,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868446862] [2021-11-25 20:33:09,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:33:09,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:33:09,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:33:09,615 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-11-25 20:33:09,615 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:33:09,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868446862] [2021-11-25 20:33:09,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868446862] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:33:09,615 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:33:09,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:33:09,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579387261] [2021-11-25 20:33:09,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:33:09,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:33:09,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:33:09,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:33:09,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:33:09,617 INFO L87 Difference]: Start difference. First operand 8296 states and 12305 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-25 20:33:12,011 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:33:15,952 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:33:17,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:33:17,033 INFO L93 Difference]: Finished difference Result 20414 states and 30605 transitions. [2021-11-25 20:33:17,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:33:17,034 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 160 [2021-11-25 20:33:17,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:33:17,133 INFO L225 Difference]: With dead ends: 20414 [2021-11-25 20:33:17,133 INFO L226 Difference]: Without dead ends: 12135 [2021-11-25 20:33:17,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:33:17,191 INFO L933 BasicCegarLoop]: 2326 mSDtfsCounter, 2025 mSDsluCounter, 4029 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 103 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2026 SdHoareTripleChecker+Valid, 6016 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-11-25 20:33:17,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2026 Valid, 6016 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 629 Invalid, 2 Unknown, 0 Unchecked, 6.9s Time] [2021-11-25 20:33:17,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12135 states. [2021-11-25 20:33:17,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12135 to 10365. [2021-11-25 20:33:17,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10365 states, 6468 states have (on average 1.395021645021645) internal successors, (9023), 6974 states have internal predecessors, (9023), 3074 states have call successors, (3074), 825 states have call predecessors, (3074), 822 states have return successors, (3239), 2807 states have call predecessors, (3239), 3070 states have call successors, (3239) [2021-11-25 20:33:17,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10365 states to 10365 states and 15336 transitions. [2021-11-25 20:33:17,735 INFO L78 Accepts]: Start accepts. Automaton has 10365 states and 15336 transitions. Word has length 160 [2021-11-25 20:33:17,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:33:17,736 INFO L470 AbstractCegarLoop]: Abstraction has 10365 states and 15336 transitions. [2021-11-25 20:33:17,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-25 20:33:17,737 INFO L276 IsEmpty]: Start isEmpty. Operand 10365 states and 15336 transitions. [2021-11-25 20:33:17,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-25 20:33:17,772 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:33:17,773 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:33:17,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 20:33:17,773 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:33:17,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:33:17,774 INFO L85 PathProgramCache]: Analyzing trace with hash 696038142, now seen corresponding path program 1 times [2021-11-25 20:33:17,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:33:17,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266848052] [2021-11-25 20:33:17,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:33:17,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:33:17,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:33:18,083 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-11-25 20:33:18,084 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:33:18,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266848052] [2021-11-25 20:33:18,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266848052] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:33:18,084 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:33:18,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:33:18,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406460115] [2021-11-25 20:33:18,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:33:18,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:33:18,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:33:18,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:33:18,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:33:18,086 INFO L87 Difference]: Start difference. First operand 10365 states and 15336 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-25 20:33:20,595 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:33:23,963 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:33:24,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:33:24,740 INFO L93 Difference]: Finished difference Result 28602 states and 42330 transitions. [2021-11-25 20:33:24,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:33:24,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 172 [2021-11-25 20:33:24,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:33:24,848 INFO L225 Difference]: With dead ends: 28602 [2021-11-25 20:33:24,848 INFO L226 Difference]: Without dead ends: 18254 [2021-11-25 20:33:24,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:33:24,917 INFO L933 BasicCegarLoop]: 2836 mSDtfsCounter, 1517 mSDsluCounter, 1720 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1518 SdHoareTripleChecker+Valid, 4396 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:33:24,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1518 Valid, 4396 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 447 Invalid, 2 Unknown, 0 Unchecked, 6.2s Time] [2021-11-25 20:33:24,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18254 states. [2021-11-25 20:33:25,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18254 to 18251. [2021-11-25 20:33:25,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18251 states, 11402 states have (on average 1.3948430099982458) internal successors, (15904), 12294 states have internal predecessors, (15904), 5380 states have call successors, (5380), 1473 states have call predecessors, (5380), 1468 states have return successors, (5713), 4903 states have call predecessors, (5713), 5376 states have call successors, (5713) [2021-11-25 20:33:25,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18251 states to 18251 states and 26997 transitions. [2021-11-25 20:33:25,916 INFO L78 Accepts]: Start accepts. Automaton has 18251 states and 26997 transitions. Word has length 172 [2021-11-25 20:33:25,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:33:25,917 INFO L470 AbstractCegarLoop]: Abstraction has 18251 states and 26997 transitions. [2021-11-25 20:33:25,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-25 20:33:25,917 INFO L276 IsEmpty]: Start isEmpty. Operand 18251 states and 26997 transitions. [2021-11-25 20:33:26,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-11-25 20:33:26,064 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:33:26,065 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:33:26,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 20:33:26,066 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:33:26,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:33:26,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1139890620, now seen corresponding path program 1 times [2021-11-25 20:33:26,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:33:26,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001272507] [2021-11-25 20:33:26,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:33:26,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:33:58,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:34:04,172 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:34:04,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001272507] [2021-11-25 20:34:04,173 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-25 20:34:04,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397852394] [2021-11-25 20:34:04,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:34:04,174 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:34:04,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b47288d-8b1c-4aaf-81ae-41ec54769f08/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:34:04,178 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b47288d-8b1c-4aaf-81ae-41ec54769f08/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:34:04,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b47288d-8b1c-4aaf-81ae-41ec54769f08/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process