./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--io_edgeport.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c675663-53cb-4f0b-b3de-9142eb732cf3/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c675663-53cb-4f0b-b3de-9142eb732cf3/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c675663-53cb-4f0b-b3de-9142eb732cf3/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c675663-53cb-4f0b-b3de-9142eb732cf3/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--io_edgeport.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c675663-53cb-4f0b-b3de-9142eb732cf3/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c675663-53cb-4f0b-b3de-9142eb732cf3/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 30733f200dc8370f05e0b3b892e3f5dfad9349a4937c910381098403fe8691aa --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:10:25,059 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:10:25,061 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:10:25,109 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:10:25,110 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:10:25,116 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:10:25,119 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:10:25,120 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:10:25,124 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:10:25,126 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:10:25,127 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:10:25,132 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:10:25,132 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:10:25,136 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:10:25,143 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:10:25,145 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:10:25,147 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:10:25,150 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:10:25,152 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:10:25,154 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:10:25,163 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:10:25,164 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:10:25,165 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:10:25,167 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:10:25,171 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:10:25,177 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:10:25,177 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:10:25,178 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:10:25,180 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:10:25,181 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:10:25,182 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:10:25,183 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:10:25,185 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:10:25,186 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:10:25,187 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:10:25,188 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:10:25,189 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:10:25,189 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:10:25,189 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:10:25,190 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:10:25,191 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:10:25,192 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c675663-53cb-4f0b-b3de-9142eb732cf3/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:10:25,216 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:10:25,217 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:10:25,217 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:10:25,217 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:10:25,218 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:10:25,218 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:10:25,218 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:10:25,219 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:10:25,219 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:10:25,219 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:10:25,219 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:10:25,220 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:10:25,220 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:10:25,220 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:10:25,220 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:10:25,221 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:10:25,221 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:10:25,221 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:10:25,222 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:10:25,222 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:10:25,223 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:10:25,223 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:10:25,223 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:10:25,223 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:10:25,223 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:10:25,224 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:10:25,224 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:10:25,224 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:10:25,224 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:10:25,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:10:25,225 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:10:25,225 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:10:25,226 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:10:25,226 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:10:25,226 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:10:25,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:10:25,226 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:10:25,227 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:10:25,227 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c675663-53cb-4f0b-b3de-9142eb732cf3/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c675663-53cb-4f0b-b3de-9142eb732cf3/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30733f200dc8370f05e0b3b892e3f5dfad9349a4937c910381098403fe8691aa [2022-11-03 02:10:25,575 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:10:25,619 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:10:25,622 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:10:25,623 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:10:25,624 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:10:25,626 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c675663-53cb-4f0b-b3de-9142eb732cf3/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--io_edgeport.ko-entry_point.cil.out.i [2022-11-03 02:10:25,709 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c675663-53cb-4f0b-b3de-9142eb732cf3/bin/utaipan-7li7fVZpFI/data/a6939bfff/814f60a03dc7453bb4932ddee4b96cff/FLAG3760c7986 [2022-11-03 02:10:26,835 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:10:26,836 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c675663-53cb-4f0b-b3de-9142eb732cf3/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--io_edgeport.ko-entry_point.cil.out.i [2022-11-03 02:10:26,882 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c675663-53cb-4f0b-b3de-9142eb732cf3/bin/utaipan-7li7fVZpFI/data/a6939bfff/814f60a03dc7453bb4932ddee4b96cff/FLAG3760c7986 [2022-11-03 02:10:27,186 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c675663-53cb-4f0b-b3de-9142eb732cf3/bin/utaipan-7li7fVZpFI/data/a6939bfff/814f60a03dc7453bb4932ddee4b96cff [2022-11-03 02:10:27,189 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:10:27,190 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:10:27,192 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:10:27,192 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:10:27,195 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:10:27,196 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:10:27" (1/1) ... [2022-11-03 02:10:27,198 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7253ae23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:10:27, skipping insertion in model container [2022-11-03 02:10:27,198 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:10:27" (1/1) ... [2022-11-03 02:10:27,205 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:10:27,358 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:10:29,684 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_8c675663-53cb-4f0b-b3de-9142eb732cf3/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--io_edgeport.ko-entry_point.cil.out.i[400138,400151] [2022-11-03 02:10:29,755 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:10:29,813 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:10:30,439 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_8c675663-53cb-4f0b-b3de-9142eb732cf3/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--io_edgeport.ko-entry_point.cil.out.i[400138,400151] [2022-11-03 02:10:30,447 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:10:30,575 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:10:30,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:10:30 WrapperNode [2022-11-03 02:10:30,576 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:10:30,577 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:10:30,577 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:10:30,578 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:10:30,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:10:30" (1/1) ... [2022-11-03 02:10:30,795 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:10:30" (1/1) ... [2022-11-03 02:10:31,181 INFO L138 Inliner]: procedures = 204, calls = 6025, calls flagged for inlining = 76, calls inlined = 73, statements flattened = 10425 [2022-11-03 02:10:31,181 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:10:31,182 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:10:31,183 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:10:31,183 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:10:31,194 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:10:30" (1/1) ... [2022-11-03 02:10:31,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:10:30" (1/1) ... [2022-11-03 02:10:31,285 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:10:30" (1/1) ... [2022-11-03 02:10:31,285 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:10:30" (1/1) ... [2022-11-03 02:10:31,503 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:10:30" (1/1) ... [2022-11-03 02:10:31,627 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:10:30" (1/1) ... [2022-11-03 02:10:31,699 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:10:30" (1/1) ... [2022-11-03 02:10:31,738 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:10:30" (1/1) ... [2022-11-03 02:10:31,793 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:10:31,795 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:10:31,796 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:10:31,796 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:10:31,797 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:10:30" (1/1) ... [2022-11-03 02:10:31,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:10:31,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c675663-53cb-4f0b-b3de-9142eb732cf3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:10:31,836 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c675663-53cb-4f0b-b3de-9142eb732cf3/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:10:31,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c675663-53cb-4f0b-b3de-9142eb732cf3/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:10:31,893 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-11-03 02:10:31,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-11-03 02:10:31,893 INFO L130 BoogieDeclarations]: Found specification of procedure edge_ioctl [2022-11-03 02:10:31,894 INFO L138 BoogieDeclarations]: Found implementation of procedure edge_ioctl [2022-11-03 02:10:31,894 INFO L130 BoogieDeclarations]: Found specification of procedure edge_write_room [2022-11-03 02:10:31,894 INFO L138 BoogieDeclarations]: Found implementation of procedure edge_write_room [2022-11-03 02:10:31,894 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 02:10:31,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 02:10:31,895 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 02:10:31,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 02:10:31,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 02:10:31,895 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 02:10:31,895 INFO L130 BoogieDeclarations]: Found specification of procedure edge_disconnect [2022-11-03 02:10:31,896 INFO L138 BoogieDeclarations]: Found implementation of procedure edge_disconnect [2022-11-03 02:10:31,896 INFO L130 BoogieDeclarations]: Found specification of procedure send_iosp_ext_cmd [2022-11-03 02:10:31,896 INFO L138 BoogieDeclarations]: Found implementation of procedure send_iosp_ext_cmd [2022-11-03 02:10:31,896 INFO L130 BoogieDeclarations]: Found specification of procedure edge_bulk_in_callback [2022-11-03 02:10:31,896 INFO L138 BoogieDeclarations]: Found implementation of procedure edge_bulk_in_callback [2022-11-03 02:10:31,896 INFO L130 BoogieDeclarations]: Found specification of procedure edge_break [2022-11-03 02:10:31,897 INFO L138 BoogieDeclarations]: Found implementation of procedure edge_break [2022-11-03 02:10:31,897 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_tiocmiwait [2022-11-03 02:10:31,897 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_tiocmiwait [2022-11-03 02:10:31,897 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-03 02:10:31,897 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-03 02:10:31,898 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-03 02:10:31,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-03 02:10:31,898 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:10:31,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:10:31,898 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2022-11-03 02:10:31,898 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2022-11-03 02:10:31,899 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_port_data [2022-11-03 02:10:31,899 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_port_data [2022-11-03 02:10:31,899 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_get_icount [2022-11-03 02:10:31,900 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_get_icount [2022-11-03 02:10:31,900 INFO L130 BoogieDeclarations]: Found specification of procedure edge_set_termios [2022-11-03 02:10:31,900 INFO L138 BoogieDeclarations]: Found implementation of procedure edge_set_termios [2022-11-03 02:10:31,900 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2022-11-03 02:10:31,901 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2022-11-03 02:10:31,901 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 02:10:31,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 02:10:31,901 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2022-11-03 02:10:31,901 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2022-11-03 02:10:31,902 INFO L130 BoogieDeclarations]: Found specification of procedure handle_new_lsr [2022-11-03 02:10:31,902 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_new_lsr [2022-11-03 02:10:31,902 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-03 02:10:31,902 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-03 02:10:31,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 02:10:31,903 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 02:10:31,903 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 02:10:31,903 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 02:10:31,903 INFO L130 BoogieDeclarations]: Found specification of procedure edge_tiocmget [2022-11-03 02:10:31,903 INFO L138 BoogieDeclarations]: Found implementation of procedure edge_tiocmget [2022-11-03 02:10:31,904 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_debug_data [2022-11-03 02:10:31,904 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_debug_data [2022-11-03 02:10:31,904 INFO L130 BoogieDeclarations]: Found specification of procedure unicode_to_ascii [2022-11-03 02:10:31,904 INFO L138 BoogieDeclarations]: Found implementation of procedure unicode_to_ascii [2022-11-03 02:10:31,904 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 02:10:31,905 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 02:10:31,905 INFO L130 BoogieDeclarations]: Found specification of procedure tty_termios_baud_rate [2022-11-03 02:10:31,905 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_termios_baud_rate [2022-11-03 02:10:31,905 INFO L130 BoogieDeclarations]: Found specification of procedure edge_throttle [2022-11-03 02:10:31,905 INFO L138 BoogieDeclarations]: Found implementation of procedure edge_throttle [2022-11-03 02:10:31,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:10:31,906 INFO L130 BoogieDeclarations]: Found specification of procedure ihex_next_binrec [2022-11-03 02:10:31,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ihex_next_binrec [2022-11-03 02:10:31,906 INFO L130 BoogieDeclarations]: Found specification of procedure handle_new_msr [2022-11-03 02:10:31,906 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_new_msr [2022-11-03 02:10:31,906 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:10:31,907 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-11-03 02:10:31,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-11-03 02:10:31,907 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-03 02:10:31,907 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-03 02:10:31,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:10:31,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:10:31,908 INFO L130 BoogieDeclarations]: Found specification of procedure edge_unthrottle [2022-11-03 02:10:31,908 INFO L138 BoogieDeclarations]: Found implementation of procedure edge_unthrottle [2022-11-03 02:10:31,908 INFO L130 BoogieDeclarations]: Found specification of procedure edge_interrupt_callback [2022-11-03 02:10:31,908 INFO L138 BoogieDeclarations]: Found implementation of procedure edge_interrupt_callback [2022-11-03 02:10:31,909 INFO L130 BoogieDeclarations]: Found specification of procedure change_port_settings [2022-11-03 02:10:31,909 INFO L138 BoogieDeclarations]: Found implementation of procedure change_port_settings [2022-11-03 02:10:31,909 INFO L130 BoogieDeclarations]: Found specification of procedure edge_open [2022-11-03 02:10:31,909 INFO L138 BoogieDeclarations]: Found implementation of procedure edge_open [2022-11-03 02:10:31,909 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-03 02:10:31,909 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-03 02:10:31,910 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-03 02:10:31,910 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-03 02:10:31,910 INFO L130 BoogieDeclarations]: Found specification of procedure dump_product_info [2022-11-03 02:10:31,910 INFO L138 BoogieDeclarations]: Found implementation of procedure dump_product_info [2022-11-03 02:10:31,910 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-03 02:10:31,911 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-03 02:10:31,911 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2022-11-03 02:10:31,911 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2022-11-03 02:10:31,911 INFO L130 BoogieDeclarations]: Found specification of procedure edge_bulk_out_data_callback [2022-11-03 02:10:31,911 INFO L138 BoogieDeclarations]: Found implementation of procedure edge_bulk_out_data_callback [2022-11-03 02:10:31,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 02:10:31,912 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-03 02:10:31,912 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-03 02:10:31,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 02:10:31,912 INFO L130 BoogieDeclarations]: Found specification of procedure edge_release [2022-11-03 02:10:31,913 INFO L138 BoogieDeclarations]: Found implementation of procedure edge_release [2022-11-03 02:10:31,913 INFO L130 BoogieDeclarations]: Found specification of procedure edge_tty_recv [2022-11-03 02:10:31,913 INFO L138 BoogieDeclarations]: Found implementation of procedure edge_tty_recv [2022-11-03 02:10:31,913 INFO L130 BoogieDeclarations]: Found specification of procedure send_more_port_data [2022-11-03 02:10:31,913 INFO L138 BoogieDeclarations]: Found implementation of procedure send_more_port_data [2022-11-03 02:10:31,913 INFO L130 BoogieDeclarations]: Found specification of procedure edge_close [2022-11-03 02:10:31,914 INFO L138 BoogieDeclarations]: Found implementation of procedure edge_close [2022-11-03 02:10:31,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:10:31,914 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2022-11-03 02:10:31,914 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2022-11-03 02:10:31,914 INFO L130 BoogieDeclarations]: Found specification of procedure edge_chars_in_buffer [2022-11-03 02:10:31,915 INFO L138 BoogieDeclarations]: Found implementation of procedure edge_chars_in_buffer [2022-11-03 02:10:31,915 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_tty_wakeup [2022-11-03 02:10:31,915 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_tty_wakeup [2022-11-03 02:10:31,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 02:10:31,915 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 02:10:31,916 INFO L130 BoogieDeclarations]: Found specification of procedure rom_read [2022-11-03 02:10:31,916 INFO L138 BoogieDeclarations]: Found implementation of procedure rom_read [2022-11-03 02:10:31,916 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-03 02:10:31,916 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-03 02:10:31,916 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-03 02:10:31,917 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-03 02:10:31,917 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-03 02:10:31,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-03 02:10:31,917 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2022-11-03 02:10:31,917 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2022-11-03 02:10:31,917 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 02:10:31,918 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 02:10:31,918 INFO L130 BoogieDeclarations]: Found specification of procedure process_rcvd_status [2022-11-03 02:10:31,918 INFO L138 BoogieDeclarations]: Found implementation of procedure process_rcvd_status [2022-11-03 02:10:31,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:10:31,918 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-03 02:10:31,919 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-03 02:10:31,919 INFO L130 BoogieDeclarations]: Found specification of procedure send_cmd_write_uart_register [2022-11-03 02:10:31,919 INFO L138 BoogieDeclarations]: Found implementation of procedure send_cmd_write_uart_register [2022-11-03 02:10:31,919 INFO L130 BoogieDeclarations]: Found specification of procedure edge_tiocmset [2022-11-03 02:10:31,919 INFO L138 BoogieDeclarations]: Found implementation of procedure edge_tiocmset [2022-11-03 02:10:31,920 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:10:31,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:10:31,920 INFO L130 BoogieDeclarations]: Found specification of procedure request_ihex_firmware [2022-11-03 02:10:31,920 INFO L138 BoogieDeclarations]: Found implementation of procedure request_ihex_firmware [2022-11-03 02:10:31,920 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-03 02:10:31,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-03 02:10:31,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:10:31,921 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-03 02:10:31,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-03 02:10:31,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:10:31,921 INFO L130 BoogieDeclarations]: Found specification of procedure edge_startup [2022-11-03 02:10:31,921 INFO L138 BoogieDeclarations]: Found implementation of procedure edge_startup [2022-11-03 02:10:31,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:10:31,922 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-03 02:10:31,922 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2022-11-03 02:10:31,922 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2022-11-03 02:10:31,922 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2022-11-03 02:10:31,923 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2022-11-03 02:10:31,923 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-03 02:10:31,923 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-03 02:10:31,923 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-11-03 02:10:31,923 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-11-03 02:10:31,923 INFO L130 BoogieDeclarations]: Found specification of procedure edge_port_remove [2022-11-03 02:10:31,924 INFO L138 BoogieDeclarations]: Found implementation of procedure edge_port_remove [2022-11-03 02:10:31,924 INFO L130 BoogieDeclarations]: Found specification of procedure write_cmd_usb [2022-11-03 02:10:31,924 INFO L138 BoogieDeclarations]: Found implementation of procedure write_cmd_usb [2022-11-03 02:10:31,924 INFO L130 BoogieDeclarations]: Found specification of procedure block_until_chase_response [2022-11-03 02:10:31,924 INFO L138 BoogieDeclarations]: Found implementation of procedure block_until_chase_response [2022-11-03 02:10:31,925 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2022-11-03 02:10:31,925 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2022-11-03 02:10:31,925 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-03 02:10:31,925 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-03 02:10:31,925 INFO L130 BoogieDeclarations]: Found specification of procedure edge_write [2022-11-03 02:10:31,925 INFO L138 BoogieDeclarations]: Found implementation of procedure edge_write [2022-11-03 02:10:31,926 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-11-03 02:10:31,926 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-11-03 02:10:31,926 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout [2022-11-03 02:10:31,926 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout [2022-11-03 02:10:31,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:10:31,926 INFO L130 BoogieDeclarations]: Found specification of procedure usb_string [2022-11-03 02:10:31,927 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_string [2022-11-03 02:10:31,927 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_data [2022-11-03 02:10:31,927 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_data [2022-11-03 02:10:31,927 INFO L130 BoogieDeclarations]: Found specification of procedure edge_port_probe [2022-11-03 02:10:31,927 INFO L138 BoogieDeclarations]: Found implementation of procedure edge_port_probe [2022-11-03 02:10:31,927 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2022-11-03 02:10:31,928 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2022-11-03 02:10:31,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:10:31,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:10:32,852 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:10:32,856 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:10:36,527 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 02:11:07,017 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:12:51,730 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:12:51,730 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 02:12:51,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:12:51 BoogieIcfgContainer [2022-11-03 02:12:51,739 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:12:51,742 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:12:51,742 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:12:51,749 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:12:51,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:10:27" (1/3) ... [2022-11-03 02:12:51,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2013b70d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:12:51, skipping insertion in model container [2022-11-03 02:12:51,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:10:30" (2/3) ... [2022-11-03 02:12:51,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2013b70d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:12:51, skipping insertion in model container [2022-11-03 02:12:51,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:12:51" (3/3) ... [2022-11-03 02:12:51,753 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--io_edgeport.ko-entry_point.cil.out.i [2022-11-03 02:12:51,779 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:12:51,779 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:12:51,929 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:12:51,937 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@19f3b93e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:12:51,937 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:12:51,952 INFO L276 IsEmpty]: Start isEmpty. Operand has 2279 states, 1463 states have (on average 1.3957621326042378) internal successors, (2042), 1481 states have internal predecessors, (2042), 731 states have call successors, (731), 84 states have call predecessors, (731), 83 states have return successors, (725), 723 states have call predecessors, (725), 725 states have call successors, (725) [2022-11-03 02:12:51,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2022-11-03 02:12:51,993 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:12:51,994 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:12:51,995 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:12:52,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:12:52,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1040701974, now seen corresponding path program 1 times [2022-11-03 02:12:52,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:12:52,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798824868] [2022-11-03 02:12:52,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:12:52,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:12:53,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:12:55,361 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3306 trivial. 0 not checked. [2022-11-03 02:12:55,362 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:12:55,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798824868] [2022-11-03 02:12:55,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798824868] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:12:55,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:12:55,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:12:55,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856004341] [2022-11-03 02:12:55,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:12:55,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:12:55,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:12:55,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:12:55,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:12:55,429 INFO L87 Difference]: Start difference. First operand has 2279 states, 1463 states have (on average 1.3957621326042378) internal successors, (2042), 1481 states have internal predecessors, (2042), 731 states have call successors, (731), 84 states have call predecessors, (731), 83 states have return successors, (725), 723 states have call predecessors, (725), 725 states have call successors, (725) Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2022-11-03 02:12:57,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:13:08,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:13:08,955 INFO L93 Difference]: Finished difference Result 6427 states and 10211 transitions. [2022-11-03 02:13:08,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:13:08,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 413 [2022-11-03 02:13:08,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:13:09,015 INFO L225 Difference]: With dead ends: 6427 [2022-11-03 02:13:09,016 INFO L226 Difference]: Without dead ends: 4216 [2022-11-03 02:13:09,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:13:09,055 INFO L413 NwaCegarLoop]: 3803 mSDtfsCounter, 2965 mSDsluCounter, 3286 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2965 SdHoareTripleChecker+Valid, 6785 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:13:09,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2965 Valid, 6785 Invalid, 826 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 824 Invalid, 1 Unknown, 0 Unchecked, 13.0s Time] [2022-11-03 02:13:09,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4216 states. [2022-11-03 02:13:09,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4216 to 4212. [2022-11-03 02:13:09,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4212 states, 2712 states have (on average 1.3864306784660767) internal successors, (3760), 2733 states have internal predecessors, (3760), 1336 states have call successors, (1336), 164 states have call predecessors, (1336), 163 states have return successors, (1335), 1330 states have call predecessors, (1335), 1335 states have call successors, (1335) [2022-11-03 02:13:09,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4212 states to 4212 states and 6431 transitions. [2022-11-03 02:13:09,523 INFO L78 Accepts]: Start accepts. Automaton has 4212 states and 6431 transitions. Word has length 413 [2022-11-03 02:13:09,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:13:09,539 INFO L495 AbstractCegarLoop]: Abstraction has 4212 states and 6431 transitions. [2022-11-03 02:13:09,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2022-11-03 02:13:09,540 INFO L276 IsEmpty]: Start isEmpty. Operand 4212 states and 6431 transitions. [2022-11-03 02:13:09,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2022-11-03 02:13:09,558 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:13:09,558 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:13:09,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:13:09,559 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:13:09,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:13:09,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1207671258, now seen corresponding path program 1 times [2022-11-03 02:13:09,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:13:09,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684757409] [2022-11-03 02:13:09,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:13:09,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:13:10,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:13:11,893 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3306 trivial. 0 not checked. [2022-11-03 02:13:11,894 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:13:11,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684757409] [2022-11-03 02:13:11,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684757409] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:13:11,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:13:11,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:13:11,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981903136] [2022-11-03 02:13:11,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:13:11,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:13:11,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:13:11,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:13:11,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:13:11,905 INFO L87 Difference]: Start difference. First operand 4212 states and 6431 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2022-11-03 02:13:14,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:13:25,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:13:25,691 INFO L93 Difference]: Finished difference Result 11985 states and 18232 transitions. [2022-11-03 02:13:25,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:13:25,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 414 [2022-11-03 02:13:25,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:13:25,762 INFO L225 Difference]: With dead ends: 11985 [2022-11-03 02:13:25,763 INFO L226 Difference]: Without dead ends: 7858 [2022-11-03 02:13:25,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:13:25,803 INFO L413 NwaCegarLoop]: 4103 mSDtfsCounter, 2938 mSDsluCounter, 3270 mSDsCounter, 0 mSdLazyCounter, 823 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2938 SdHoareTripleChecker+Valid, 7071 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 823 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:13:25,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2938 Valid, 7071 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 823 Invalid, 1 Unknown, 0 Unchecked, 13.4s Time] [2022-11-03 02:13:25,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7858 states. [2022-11-03 02:13:26,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7858 to 7853. [2022-11-03 02:13:26,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7853 states, 5045 states have (on average 1.3789890981169475) internal successors, (6957), 5088 states have internal predecessors, (6957), 2482 states have call successors, (2482), 326 states have call predecessors, (2482), 325 states have return successors, (2481), 2470 states have call predecessors, (2481), 2481 states have call successors, (2481) [2022-11-03 02:13:26,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7853 states to 7853 states and 11920 transitions. [2022-11-03 02:13:26,445 INFO L78 Accepts]: Start accepts. Automaton has 7853 states and 11920 transitions. Word has length 414 [2022-11-03 02:13:26,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:13:26,453 INFO L495 AbstractCegarLoop]: Abstraction has 7853 states and 11920 transitions. [2022-11-03 02:13:26,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2022-11-03 02:13:26,454 INFO L276 IsEmpty]: Start isEmpty. Operand 7853 states and 11920 transitions. [2022-11-03 02:13:26,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2022-11-03 02:13:26,468 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:13:26,468 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:13:26,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:13:26,469 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:13:26,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:13:26,470 INFO L85 PathProgramCache]: Analyzing trace with hash -851328850, now seen corresponding path program 1 times [2022-11-03 02:13:26,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:13:26,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994056046] [2022-11-03 02:13:26,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:13:26,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:13:27,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:13:28,394 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3306 trivial. 0 not checked. [2022-11-03 02:13:28,395 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:13:28,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994056046] [2022-11-03 02:13:28,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994056046] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:13:28,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:13:28,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:13:28,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212017487] [2022-11-03 02:13:28,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:13:28,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:13:28,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:13:28,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:13:28,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:13:28,398 INFO L87 Difference]: Start difference. First operand 7853 states and 11920 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2022-11-03 02:13:30,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:13:39,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:13:39,616 INFO L93 Difference]: Finished difference Result 22420 states and 33877 transitions. [2022-11-03 02:13:39,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:13:39,617 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 416 [2022-11-03 02:13:39,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:13:39,743 INFO L225 Difference]: With dead ends: 22420 [2022-11-03 02:13:39,743 INFO L226 Difference]: Without dead ends: 14652 [2022-11-03 02:13:39,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:13:39,800 INFO L413 NwaCegarLoop]: 4417 mSDtfsCounter, 2924 mSDsluCounter, 3270 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2924 SdHoareTripleChecker+Valid, 7385 SdHoareTripleChecker+Invalid, 828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:13:39,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2924 Valid, 7385 Invalid, 828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 826 Invalid, 1 Unknown, 0 Unchecked, 10.7s Time] [2022-11-03 02:13:39,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14652 states. [2022-11-03 02:13:40,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14652 to 14645. [2022-11-03 02:13:40,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14645 states, 9373 states have (on average 1.368718659980796) internal successors, (12829), 9460 states have internal predecessors, (12829), 4622 states have call successors, (4622), 650 states have call predecessors, (4622), 649 states have return successors, (4621), 4598 states have call predecessors, (4621), 4621 states have call successors, (4621) [2022-11-03 02:13:41,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14645 states to 14645 states and 22072 transitions. [2022-11-03 02:13:41,074 INFO L78 Accepts]: Start accepts. Automaton has 14645 states and 22072 transitions. Word has length 416 [2022-11-03 02:13:41,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:13:41,076 INFO L495 AbstractCegarLoop]: Abstraction has 14645 states and 22072 transitions. [2022-11-03 02:13:41,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2022-11-03 02:13:41,077 INFO L276 IsEmpty]: Start isEmpty. Operand 14645 states and 22072 transitions. [2022-11-03 02:13:41,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2022-11-03 02:13:41,089 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:13:41,090 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:13:41,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:13:41,091 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:13:41,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:13:41,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1167950580, now seen corresponding path program 1 times [2022-11-03 02:13:41,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:13:41,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981363350] [2022-11-03 02:13:41,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:13:41,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:13:42,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:13:42,904 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3306 trivial. 0 not checked. [2022-11-03 02:13:42,905 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:13:42,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981363350] [2022-11-03 02:13:42,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981363350] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:13:42,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:13:42,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:13:42,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948160133] [2022-11-03 02:13:42,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:13:42,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:13:42,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:13:42,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:13:42,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:13:42,910 INFO L87 Difference]: Start difference. First operand 14645 states and 22072 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2022-11-03 02:13:45,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:13:57,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:13:57,734 INFO L93 Difference]: Finished difference Result 40552 states and 60915 transitions. [2022-11-03 02:13:57,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:13:57,735 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 417 [2022-11-03 02:13:57,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:13:57,904 INFO L225 Difference]: With dead ends: 40552 [2022-11-03 02:13:57,904 INFO L226 Difference]: Without dead ends: 25992 [2022-11-03 02:13:57,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:13:57,982 INFO L413 NwaCegarLoop]: 5756 mSDtfsCounter, 2903 mSDsluCounter, 3270 mSDsCounter, 0 mSdLazyCounter, 1111 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2903 SdHoareTripleChecker+Valid, 8723 SdHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1111 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:13:57,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2903 Valid, 8723 Invalid, 1113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1111 Invalid, 1 Unknown, 0 Unchecked, 14.1s Time] [2022-11-03 02:13:58,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25992 states. [2022-11-03 02:13:59,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25992 to 25989. [2022-11-03 02:13:59,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25989 states, 16597 states have (on average 1.36054708682292) internal successors, (22581), 16754 states have internal predecessors, (22581), 8189 states have call successors, (8189), 1203 states have call predecessors, (8189), 1202 states have return successors, (8188), 8151 states have call predecessors, (8188), 8188 states have call successors, (8188) [2022-11-03 02:14:00,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25989 states to 25989 states and 38958 transitions. [2022-11-03 02:14:00,167 INFO L78 Accepts]: Start accepts. Automaton has 25989 states and 38958 transitions. Word has length 417 [2022-11-03 02:14:00,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:14:00,168 INFO L495 AbstractCegarLoop]: Abstraction has 25989 states and 38958 transitions. [2022-11-03 02:14:00,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2022-11-03 02:14:00,169 INFO L276 IsEmpty]: Start isEmpty. Operand 25989 states and 38958 transitions. [2022-11-03 02:14:00,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 616 [2022-11-03 02:14:00,190 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:14:00,190 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:14:00,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:14:00,191 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:14:00,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:14:00,192 INFO L85 PathProgramCache]: Analyzing trace with hash 458760367, now seen corresponding path program 1 times [2022-11-03 02:14:00,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:14:00,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109021484] [2022-11-03 02:14:00,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:14:00,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:14:01,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:14:03,091 INFO L134 CoverageAnalysis]: Checked inductivity of 6428 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6426 trivial. 0 not checked. [2022-11-03 02:14:03,091 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:14:03,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109021484] [2022-11-03 02:14:03,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109021484] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:14:03,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:14:03,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:14:03,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951076847] [2022-11-03 02:14:03,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:14:03,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:14:03,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:14:03,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:14:03,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:14:03,096 INFO L87 Difference]: Start difference. First operand 25989 states and 38958 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2022-11-03 02:14:05,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:14:15,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:14:15,465 INFO L93 Difference]: Finished difference Result 64697 states and 97140 transitions. [2022-11-03 02:14:15,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:14:15,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) Word has length 615 [2022-11-03 02:14:15,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:14:15,869 INFO L225 Difference]: With dead ends: 64697 [2022-11-03 02:14:15,870 INFO L226 Difference]: Without dead ends: 38793 [2022-11-03 02:14:15,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:14:15,986 INFO L413 NwaCegarLoop]: 3931 mSDtfsCounter, 3095 mSDsluCounter, 3228 mSDsCounter, 0 mSdLazyCounter, 918 mSolverCounterSat, 99 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3095 SdHoareTripleChecker+Valid, 6858 SdHoareTripleChecker+Invalid, 1018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 918 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:14:15,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3095 Valid, 6858 Invalid, 1018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 918 Invalid, 1 Unknown, 0 Unchecked, 11.2s Time] [2022-11-03 02:14:16,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38793 states. [2022-11-03 02:14:18,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38793 to 38789. [2022-11-03 02:14:18,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38789 states, 24992 states have (on average 1.3523927656850192) internal successors, (33799), 25230 states have internal predecessors, (33799), 11977 states have call successors, (11977), 1820 states have call predecessors, (11977), 1819 states have return successors, (11976), 11919 states have call predecessors, (11976), 11976 states have call successors, (11976) [2022-11-03 02:14:19,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38789 states to 38789 states and 57752 transitions. [2022-11-03 02:14:19,116 INFO L78 Accepts]: Start accepts. Automaton has 38789 states and 57752 transitions. Word has length 615 [2022-11-03 02:14:19,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:14:19,117 INFO L495 AbstractCegarLoop]: Abstraction has 38789 states and 57752 transitions. [2022-11-03 02:14:19,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2022-11-03 02:14:19,118 INFO L276 IsEmpty]: Start isEmpty. Operand 38789 states and 57752 transitions. [2022-11-03 02:14:19,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 617 [2022-11-03 02:14:19,125 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:14:19,125 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:14:19,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:14:19,126 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:14:19,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:14:19,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1968978943, now seen corresponding path program 1 times [2022-11-03 02:14:19,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:14:19,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586944535] [2022-11-03 02:14:19,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:14:19,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:14:20,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:14:21,896 INFO L134 CoverageAnalysis]: Checked inductivity of 6429 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 6426 trivial. 0 not checked. [2022-11-03 02:14:21,897 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:14:21,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586944535] [2022-11-03 02:14:21,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586944535] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:14:21,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:14:21,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:14:21,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129538252] [2022-11-03 02:14:21,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:14:21,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:14:21,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:14:21,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:14:21,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:14:21,901 INFO L87 Difference]: Start difference. First operand 38789 states and 57752 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2022-11-03 02:14:24,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:14:35,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:14:35,261 INFO L93 Difference]: Finished difference Result 96313 states and 143650 transitions. [2022-11-03 02:14:35,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:14:35,262 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) Word has length 616 [2022-11-03 02:14:35,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:14:35,650 INFO L225 Difference]: With dead ends: 96313 [2022-11-03 02:14:35,651 INFO L226 Difference]: Without dead ends: 57609 [2022-11-03 02:14:35,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:14:35,886 INFO L413 NwaCegarLoop]: 3929 mSDtfsCounter, 3086 mSDsluCounter, 3216 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 99 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3086 SdHoareTripleChecker+Valid, 6845 SdHoareTripleChecker+Invalid, 1017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:14:35,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3086 Valid, 6845 Invalid, 1017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 917 Invalid, 1 Unknown, 0 Unchecked, 11.6s Time] [2022-11-03 02:14:35,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57609 states. [2022-11-03 02:14:39,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57609 to 57603. [2022-11-03 02:14:39,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57603 states, 37456 states have (on average 1.3446443827424177) internal successors, (50365), 37814 states have internal predecessors, (50365), 17413 states have call successors, (17413), 2734 states have call predecessors, (17413), 2733 states have return successors, (17412), 17325 states have call predecessors, (17412), 17412 states have call successors, (17412) [2022-11-03 02:14:39,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57603 states to 57603 states and 85190 transitions. [2022-11-03 02:14:39,572 INFO L78 Accepts]: Start accepts. Automaton has 57603 states and 85190 transitions. Word has length 616 [2022-11-03 02:14:39,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:14:39,574 INFO L495 AbstractCegarLoop]: Abstraction has 57603 states and 85190 transitions. [2022-11-03 02:14:39,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2022-11-03 02:14:39,575 INFO L276 IsEmpty]: Start isEmpty. Operand 57603 states and 85190 transitions. [2022-11-03 02:14:39,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 617 [2022-11-03 02:14:39,586 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:14:39,587 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:14:39,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:14:39,587 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:14:39,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:14:39,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1821810928, now seen corresponding path program 1 times [2022-11-03 02:14:39,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:14:39,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955137630] [2022-11-03 02:14:39,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:14:39,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:14:41,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:14:42,407 INFO L134 CoverageAnalysis]: Checked inductivity of 6428 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6428 trivial. 0 not checked. [2022-11-03 02:14:42,407 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:14:42,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955137630] [2022-11-03 02:14:42,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955137630] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:14:42,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:14:42,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:14:42,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936319268] [2022-11-03 02:14:42,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:14:42,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:14:42,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:14:42,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:14:42,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:14:42,411 INFO L87 Difference]: Start difference. First operand 57603 states and 85190 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2022-11-03 02:14:44,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:14:51,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:14:51,511 INFO L93 Difference]: Finished difference Result 65224 states and 95607 transitions. [2022-11-03 02:14:51,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:14:51,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) Word has length 616 [2022-11-03 02:14:51,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:14:51,805 INFO L225 Difference]: With dead ends: 65224 [2022-11-03 02:14:51,805 INFO L226 Difference]: Without dead ends: 65221 [2022-11-03 02:14:51,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:14:51,832 INFO L413 NwaCegarLoop]: 3237 mSDtfsCounter, 3071 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3071 SdHoareTripleChecker+Valid, 3698 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:14:51,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3071 Valid, 3698 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 417 Invalid, 1 Unknown, 0 Unchecked, 7.4s Time] [2022-11-03 02:14:51,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65221 states. [2022-11-03 02:14:55,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65221 to 65221. [2022-11-03 02:14:55,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65221 states, 42207 states have (on average 1.3380481910583553) internal successors, (56475), 42670 states have internal predecessors, (56475), 19548 states have call successors, (19548), 3466 states have call predecessors, (19548), 3465 states have return successors, (19547), 19460 states have call predecessors, (19547), 19547 states have call successors, (19547) [2022-11-03 02:14:55,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65221 states to 65221 states and 95570 transitions. [2022-11-03 02:14:55,588 INFO L78 Accepts]: Start accepts. Automaton has 65221 states and 95570 transitions. Word has length 616 [2022-11-03 02:14:55,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:14:55,589 INFO L495 AbstractCegarLoop]: Abstraction has 65221 states and 95570 transitions. [2022-11-03 02:14:55,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2022-11-03 02:14:55,590 INFO L276 IsEmpty]: Start isEmpty. Operand 65221 states and 95570 transitions. [2022-11-03 02:14:55,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 643 [2022-11-03 02:14:55,623 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:14:55,624 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:14:55,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:14:55,624 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:14:55,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:14:55,625 INFO L85 PathProgramCache]: Analyzing trace with hash 139643549, now seen corresponding path program 1 times [2022-11-03 02:14:55,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:14:55,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671482817] [2022-11-03 02:14:55,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:14:55,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms