./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwl8k.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1144583d-cf88-4a38-afe1-58df749cefec/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1144583d-cf88-4a38-afe1-58df749cefec/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1144583d-cf88-4a38-afe1-58df749cefec/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1144583d-cf88-4a38-afe1-58df749cefec/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwl8k.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1144583d-cf88-4a38-afe1-58df749cefec/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1144583d-cf88-4a38-afe1-58df749cefec/bin/utaipan-EQgc7hIp5V --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 fa9ec5014a93fa4ada80c2707ca9ad7bdd1ffda04a5a3c96f283fdf229b22b41 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:16:48,584 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:16:48,587 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:16:48,655 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:16:48,656 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:16:48,657 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:16:48,660 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:16:48,663 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:16:48,669 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:16:48,671 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:16:48,672 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:16:48,674 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:16:48,675 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:16:48,677 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:16:48,679 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:16:48,684 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:16:48,687 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:16:48,697 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:16:48,700 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:16:48,707 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:16:48,721 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:16:48,723 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:16:48,725 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:16:48,729 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:16:48,734 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:16:48,736 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:16:48,737 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:16:48,740 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:16:48,741 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:16:48,743 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:16:48,744 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:16:48,745 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:16:48,748 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:16:48,750 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:16:48,753 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:16:48,753 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:16:48,754 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:16:48,755 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:16:48,755 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:16:48,757 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:16:48,758 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:16:48,759 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1144583d-cf88-4a38-afe1-58df749cefec/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 02:16:48,809 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:16:48,809 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:16:48,810 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:16:48,810 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:16:48,811 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:16:48,811 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:16:48,812 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:16:48,812 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:16:48,812 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:16:48,813 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:16:48,813 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:16:48,813 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:16:48,814 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:16:48,814 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:16:48,814 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:16:48,815 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:16:48,815 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:16:48,815 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:16:48,816 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:16:48,816 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:16:48,817 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:16:48,817 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:16:48,817 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:16:48,818 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:16:48,818 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:16:48,818 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:16:48,819 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:16:48,819 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:16:48,819 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:16:48,820 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:16:48,820 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:16:48,820 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:16:48,821 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:16:48,821 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:16:48,821 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:16:48,822 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:16:48,822 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:16:48,822 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:16:48,823 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1144583d-cf88-4a38-afe1-58df749cefec/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1144583d-cf88-4a38-afe1-58df749cefec/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa9ec5014a93fa4ada80c2707ca9ad7bdd1ffda04a5a3c96f283fdf229b22b41 [2021-11-23 02:16:49,174 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:16:49,206 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:16:49,209 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:16:49,210 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:16:49,212 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:16:49,214 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1144583d-cf88-4a38-afe1-58df749cefec/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwl8k.ko-entry_point.cil.out.i [2021-11-23 02:16:49,292 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1144583d-cf88-4a38-afe1-58df749cefec/bin/utaipan-EQgc7hIp5V/data/963c516e2/cf29d0545a3340b9b6af32207e5e90c9/FLAG5c5496a17 [2021-11-23 02:16:50,657 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:16:50,658 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1144583d-cf88-4a38-afe1-58df749cefec/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwl8k.ko-entry_point.cil.out.i [2021-11-23 02:16:50,758 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1144583d-cf88-4a38-afe1-58df749cefec/bin/utaipan-EQgc7hIp5V/data/963c516e2/cf29d0545a3340b9b6af32207e5e90c9/FLAG5c5496a17 [2021-11-23 02:16:51,179 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1144583d-cf88-4a38-afe1-58df749cefec/bin/utaipan-EQgc7hIp5V/data/963c516e2/cf29d0545a3340b9b6af32207e5e90c9 [2021-11-23 02:16:51,182 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:16:51,184 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:16:51,185 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:16:51,186 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:16:51,190 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:16:51,191 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:16:51" (1/1) ... [2021-11-23 02:16:51,193 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5738df84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:51, skipping insertion in model container [2021-11-23 02:16:51,193 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:16:51" (1/1) ... [2021-11-23 02:16:51,202 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:16:51,413 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:16:53,688 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_1144583d-cf88-4a38-afe1-58df749cefec/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwl8k.ko-entry_point.cil.out.i[223336,223349] [2021-11-23 02:16:56,117 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:16:56,168 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:16:56,381 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_1144583d-cf88-4a38-afe1-58df749cefec/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwl8k.ko-entry_point.cil.out.i[223336,223349] [2021-11-23 02:16:56,841 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:16:57,129 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:16:57,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:57 WrapperNode [2021-11-23 02:16:57,130 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:16:57,131 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:16:57,131 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:16:57,131 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:16:57,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:57" (1/1) ... [2021-11-23 02:16:57,316 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:57" (1/1) ... [2021-11-23 02:16:57,764 INFO L137 Inliner]: procedures = 418, calls = 3842, calls flagged for inlining = 181, calls inlined = 158, statements flattened = 7829 [2021-11-23 02:16:57,765 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:16:57,766 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:16:57,766 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:16:57,767 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:16:57,777 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:57" (1/1) ... [2021-11-23 02:16:57,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:57" (1/1) ... [2021-11-23 02:16:57,877 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:57" (1/1) ... [2021-11-23 02:16:57,878 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:57" (1/1) ... [2021-11-23 02:16:58,180 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:57" (1/1) ... [2021-11-23 02:16:58,236 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:57" (1/1) ... [2021-11-23 02:16:58,430 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:57" (1/1) ... [2021-11-23 02:16:58,501 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:16:58,502 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:16:58,503 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:16:58,503 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:16:58,504 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:57" (1/1) ... [2021-11-23 02:16:58,517 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:16:58,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1144583d-cf88-4a38-afe1-58df749cefec/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:16:58,543 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1144583d-cf88-4a38-afe1-58df749cefec/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:16:58,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1144583d-cf88-4a38-afe1-58df749cefec/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:16:58,597 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_cmd_radio_disable [2021-11-23 02:16:58,598 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_cmd_radio_disable [2021-11-23 02:16:58,598 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_set_key [2021-11-23 02:16:58,598 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_set_key [2021-11-23 02:16:58,598 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_cmd_use_fixed_rate_ap [2021-11-23 02:16:58,598 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_cmd_use_fixed_rate_ap [2021-11-23 02:16:58,599 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-23 02:16:58,599 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-23 02:16:58,599 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_set_rts_threshold [2021-11-23 02:16:58,600 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_set_rts_threshold [2021-11-23 02:16:58,600 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-11-23 02:16:58,600 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-11-23 02:16:58,600 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 02:16:58,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 02:16:58,601 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_remove_interface [2021-11-23 02:16:58,602 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_remove_interface [2021-11-23 02:16:58,602 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2021-11-23 02:16:58,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2021-11-23 02:16:58,602 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-23 02:16:58,602 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-23 02:16:58,602 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2021-11-23 02:16:58,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2021-11-23 02:16:58,603 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-23 02:16:58,603 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-23 02:16:58,603 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-23 02:16:58,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-23 02:16:58,603 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-23 02:16:58,603 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-23 02:16:58,604 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_prepare_multicast [2021-11-23 02:16:58,604 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_prepare_multicast [2021-11-23 02:16:58,604 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_feed_fw_image [2021-11-23 02:16:58,605 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_feed_fw_image [2021-11-23 02:16:58,605 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_release_firmware [2021-11-23 02:16:58,605 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_release_firmware [2021-11-23 02:16:58,605 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-23 02:16:58,605 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-23 02:16:58,605 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-23 02:16:58,606 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_cmd_radio_enable [2021-11-23 02:16:58,606 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_cmd_radio_enable [2021-11-23 02:16:58,606 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_is_mgmt [2021-11-23 02:16:58,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_is_mgmt [2021-11-23 02:16:58,606 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_rxd_ap_process [2021-11-23 02:16:58,607 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_rxd_ap_process [2021-11-23 02:16:58,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-23 02:16:58,607 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_fw_unlock [2021-11-23 02:16:58,607 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_fw_unlock [2021-11-23 02:16:58,608 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_get_stats [2021-11-23 02:16:58,608 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_get_stats [2021-11-23 02:16:58,608 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-23 02:16:58,609 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-23 02:16:58,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:16:58,610 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2021-11-23 02:16:58,610 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2021-11-23 02:16:58,610 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-23 02:16:58,610 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-23 02:16:58,611 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_configure_filter [2021-11-23 02:16:58,611 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_configure_filter [2021-11-23 02:16:58,611 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_set_ht_caps [2021-11-23 02:16:58,611 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_set_ht_caps [2021-11-23 02:16:58,611 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_start [2021-11-23 02:16:58,612 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_start [2021-11-23 02:16:58,612 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_request_fw [2021-11-23 02:16:58,612 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_request_fw [2021-11-23 02:16:58,612 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-23 02:16:58,613 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-23 02:16:58,613 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2021-11-23 02:16:58,613 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2021-11-23 02:16:58,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 02:16:58,613 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-23 02:16:58,613 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-23 02:16:58,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 02:16:58,614 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_load_firmware [2021-11-23 02:16:58,614 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_load_firmware [2021-11-23 02:16:58,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 02:16:58,614 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-23 02:16:58,614 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-23 02:16:58,614 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_1 [2021-11-23 02:16:58,615 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_1 [2021-11-23 02:16:58,616 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_probe_hw [2021-11-23 02:16:58,616 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_probe_hw [2021-11-23 02:16:58,616 INFO L130 BoogieDeclarations]: Found specification of procedure SET_IEEE80211_PERM_ADDR [2021-11-23 02:16:58,616 INFO L138 BoogieDeclarations]: Found implementation of procedure SET_IEEE80211_PERM_ADDR [2021-11-23 02:16:58,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-23 02:16:58,617 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-23 02:16:58,617 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_cmd_name [2021-11-23 02:16:58,617 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_cmd_name [2021-11-23 02:16:58,618 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_tx [2021-11-23 02:16:58,618 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_tx [2021-11-23 02:16:58,618 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2021-11-23 02:16:58,619 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2021-11-23 02:16:58,619 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iomap [2021-11-23 02:16:58,619 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iomap [2021-11-23 02:16:58,620 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_sw_scan_start [2021-11-23 02:16:58,620 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_sw_scan_start [2021-11-23 02:16:58,621 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-23 02:16:58,621 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-23 02:16:58,621 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-23 02:16:58,621 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-23 02:16:58,621 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_rxd_ap_refill [2021-11-23 02:16:58,621 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_rxd_ap_refill [2021-11-23 02:16:58,622 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_set_caps [2021-11-23 02:16:58,622 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_set_caps [2021-11-23 02:16:58,622 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u16 [2021-11-23 02:16:58,622 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock [2021-11-23 02:16:58,622 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock [2021-11-23 02:16:58,623 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_cmd_set_wmm_mode [2021-11-23 02:16:58,623 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_cmd_set_wmm_mode [2021-11-23 02:16:58,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:16:58,623 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_get_survey [2021-11-23 02:16:58,623 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_get_survey [2021-11-23 02:16:58,624 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2021-11-23 02:16:58,625 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2021-11-23 02:16:58,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:16:58,628 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_free_hw [2021-11-23 02:16:58,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_free_hw [2021-11-23 02:16:58,629 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-23 02:16:58,630 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-23 02:16:58,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:16:58,630 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-23 02:16:58,631 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_add_stream [2021-11-23 02:16:58,631 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_add_stream [2021-11-23 02:16:58,636 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_rxd_sta_init [2021-11-23 02:16:58,637 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_rxd_sta_init [2021-11-23 02:16:58,637 INFO L130 BoogieDeclarations]: Found specification of procedure _cond_resched [2021-11-23 02:16:58,637 INFO L138 BoogieDeclarations]: Found implementation of procedure _cond_resched [2021-11-23 02:16:58,637 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2021-11-23 02:16:58,637 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2021-11-23 02:16:58,637 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_cmd_radio_control [2021-11-23 02:16:58,637 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_cmd_radio_control [2021-11-23 02:16:58,638 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-23 02:16:58,638 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-23 02:16:58,638 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_queue_work [2021-11-23 02:16:58,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_queue_work [2021-11-23 02:16:58,638 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_post_pervif_cmd [2021-11-23 02:16:58,638 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_post_pervif_cmd [2021-11-23 02:16:58,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:16:58,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:16:58,639 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_wake_queues [2021-11-23 02:16:58,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_wake_queues [2021-11-23 02:16:58,639 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2021-11-23 02:16:58,639 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2021-11-23 02:16:58,639 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-23 02:16:58,639 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-23 02:16:58,639 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_hw_reset [2021-11-23 02:16:58,640 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_hw_reset [2021-11-23 02:16:58,640 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_cmd_bss_start [2021-11-23 02:16:58,640 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_cmd_bss_start [2021-11-23 02:16:58,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 02:16:58,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 02:16:58,640 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_get_chandef_type [2021-11-23 02:16:58,640 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_get_chandef_type [2021-11-23 02:16:58,641 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-23 02:16:58,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-23 02:16:58,641 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_enable_bsses [2021-11-23 02:16:58,641 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_enable_bsses [2021-11-23 02:16:58,641 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_interrupt [2021-11-23 02:16:58,641 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_interrupt [2021-11-23 02:16:58,641 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2021-11-23 02:16:58,641 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2021-11-23 02:16:58,642 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-23 02:16:58,642 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-23 02:16:58,642 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion_timeout [2021-11-23 02:16:58,642 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion_timeout [2021-11-23 02:16:58,642 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_conf_tx [2021-11-23 02:16:58,642 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_conf_tx [2021-11-23 02:16:58,642 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_cmd_set_pre_scan [2021-11-23 02:16:58,643 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_cmd_set_pre_scan [2021-11-23 02:16:58,643 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_is_data [2021-11-23 02:16:58,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_is_data [2021-11-23 02:16:58,643 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_cmd_set_post_scan [2021-11-23 02:16:58,643 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_cmd_set_post_scan [2021-11-23 02:16:58,643 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_load_fw_image [2021-11-23 02:16:58,643 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_load_fw_image [2021-11-23 02:16:58,644 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_init_txqs [2021-11-23 02:16:58,644 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_init_txqs [2021-11-23 02:16:58,644 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_remove_vif [2021-11-23 02:16:58,644 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_remove_vif [2021-11-23 02:16:58,644 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-23 02:16:58,644 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-23 02:16:58,644 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_is_data_qos [2021-11-23 02:16:58,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_is_data_qos [2021-11-23 02:16:58,645 INFO L130 BoogieDeclarations]: Found specification of procedure __arch_hweight32 [2021-11-23 02:16:58,645 INFO L138 BoogieDeclarations]: Found implementation of procedure __arch_hweight32 [2021-11-23 02:16:58,646 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-23 02:16:58,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-23 02:16:58,646 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-23 02:16:58,646 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-23 02:16:58,646 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_hdrlen [2021-11-23 02:16:58,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_hdrlen [2021-11-23 02:16:58,647 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_init_firmware [2021-11-23 02:16:58,647 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_init_firmware [2021-11-23 02:16:58,647 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-23 02:16:58,647 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-23 02:16:58,647 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_cmd_enable_sniffer [2021-11-23 02:16:58,647 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_cmd_enable_sniffer [2021-11-23 02:16:58,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-23 02:16:58,648 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-23 02:16:58,648 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_1 [2021-11-23 02:16:58,648 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_1 [2021-11-23 02:16:58,648 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2021-11-23 02:16:58,648 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2021-11-23 02:16:58,648 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_cmd_bbp_reg_access [2021-11-23 02:16:58,649 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_cmd_bbp_reg_access [2021-11-23 02:16:58,649 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 02:16:58,649 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 02:16:58,649 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-23 02:16:58,649 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-23 02:16:58,649 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_kill [2021-11-23 02:16:58,649 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_kill [2021-11-23 02:16:58,649 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_cmd_rf_antenna [2021-11-23 02:16:58,650 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_cmd_rf_antenna [2021-11-23 02:16:58,650 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_reload_firmware [2021-11-23 02:16:58,650 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_reload_firmware [2021-11-23 02:16:58,650 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-23 02:16:58,650 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-23 02:16:58,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:16:58,650 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_channel_to_frequency [2021-11-23 02:16:58,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_channel_to_frequency [2021-11-23 02:16:58,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:16:58,651 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2021-11-23 02:16:58,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2021-11-23 02:16:58,651 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_add_dma_header [2021-11-23 02:16:58,651 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_add_dma_header [2021-11-23 02:16:58,651 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_bss_info_changed [2021-11-23 02:16:58,651 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_bss_info_changed [2021-11-23 02:16:58,652 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_remove_stream [2021-11-23 02:16:58,652 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_remove_stream [2021-11-23 02:16:58,652 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_sw_scan_complete [2021-11-23 02:16:58,652 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_sw_scan_complete [2021-11-23 02:16:58,652 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_txq_reclaim [2021-11-23 02:16:58,652 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_txq_reclaim [2021-11-23 02:16:58,652 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_set_radio_preamble [2021-11-23 02:16:58,653 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_set_radio_preamble [2021-11-23 02:16:58,653 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_config [2021-11-23 02:16:58,653 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_config [2021-11-23 02:16:58,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 02:16:58,653 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-23 02:16:58,653 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-23 02:16:58,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2021-11-23 02:16:58,659 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2021-11-23 02:16:58,659 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_txq_deinit [2021-11-23 02:16:58,659 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_txq_deinit [2021-11-23 02:16:58,660 INFO L130 BoogieDeclarations]: Found specification of procedure rxq_refill [2021-11-23 02:16:58,660 INFO L138 BoogieDeclarations]: Found implementation of procedure rxq_refill [2021-11-23 02:16:58,660 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-23 02:16:58,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-23 02:16:58,660 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_rxd_sta_process [2021-11-23 02:16:58,660 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_rxd_sta_process [2021-11-23 02:16:58,661 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_fw_lock [2021-11-23 02:16:58,663 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_fw_lock [2021-11-23 02:16:58,664 INFO L130 BoogieDeclarations]: Found specification of procedure __mwl8k_cmd_mac_multicast_adr [2021-11-23 02:16:58,664 INFO L138 BoogieDeclarations]: Found implementation of procedure __mwl8k_cmd_mac_multicast_adr [2021-11-23 02:16:58,664 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_rxd_ap_init [2021-11-23 02:16:58,664 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_rxd_ap_init [2021-11-23 02:16:58,664 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-23 02:16:58,664 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-23 02:16:58,664 INFO L130 BoogieDeclarations]: Found specification of procedure jiffies_to_msecs [2021-11-23 02:16:58,665 INFO L138 BoogieDeclarations]: Found implementation of procedure jiffies_to_msecs [2021-11-23 02:16:58,665 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_destroy_ba [2021-11-23 02:16:58,665 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_destroy_ba [2021-11-23 02:16:58,665 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_disable [2021-11-23 02:16:58,665 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_disable [2021-11-23 02:16:58,665 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_mapping_error [2021-11-23 02:16:58,665 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_mapping_error [2021-11-23 02:16:58,665 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2021-11-23 02:16:58,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2021-11-23 02:16:58,666 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_sta_remove [2021-11-23 02:16:58,666 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_sta_remove [2021-11-23 02:16:58,666 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_tx_start [2021-11-23 02:16:58,666 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_tx_start [2021-11-23 02:16:58,666 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_remove_dma_header [2021-11-23 02:16:58,666 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_remove_dma_header [2021-11-23 02:16:58,666 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_stop [2021-11-23 02:16:58,667 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_stop [2021-11-23 02:16:58,667 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_cmd_update_mac_addr [2021-11-23 02:16:58,667 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_cmd_update_mac_addr [2021-11-23 02:16:58,667 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-23 02:16:58,667 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-23 02:16:58,667 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2021-11-23 02:16:58,667 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2021-11-23 02:16:58,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 02:16:58,668 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2021-11-23 02:16:58,668 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2021-11-23 02:16:58,668 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-23 02:16:58,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-23 02:16:58,668 INFO L130 BoogieDeclarations]: Found specification of procedure __ilog2_u32 [2021-11-23 02:16:58,668 INFO L138 BoogieDeclarations]: Found implementation of procedure __ilog2_u32 [2021-11-23 02:16:58,668 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_stop_queues [2021-11-23 02:16:58,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_stop_queues [2021-11-23 02:16:58,669 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_encryption_set_cmd_info [2021-11-23 02:16:58,669 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_encryption_set_cmd_info [2021-11-23 02:16:58,669 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-11-23 02:16:58,669 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-11-23 02:16:58,669 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_sta_add [2021-11-23 02:16:58,669 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_sta_add [2021-11-23 02:16:58,669 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2021-11-23 02:16:58,669 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2021-11-23 02:16:58,670 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-11-23 02:16:58,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-11-23 02:16:58,670 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_cmd_set_mac_addr [2021-11-23 02:16:58,670 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_cmd_set_mac_addr [2021-11-23 02:16:58,670 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_add_interface [2021-11-23 02:16:58,670 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_add_interface [2021-11-23 02:16:58,670 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_2 [2021-11-23 02:16:58,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_2 [2021-11-23 02:16:58,671 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-11-23 02:16:58,671 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-11-23 02:16:58,671 INFO L130 BoogieDeclarations]: Found specification of procedure legacy_rate_mask_to_array [2021-11-23 02:16:58,671 INFO L138 BoogieDeclarations]: Found implementation of procedure legacy_rate_mask_to_array [2021-11-23 02:16:58,671 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_ampdu_action [2021-11-23 02:16:58,671 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_ampdu_action [2021-11-23 02:16:58,671 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_rxd_sta_refill [2021-11-23 02:16:58,672 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_rxd_sta_refill [2021-11-23 02:16:58,672 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-23 02:16:58,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ffs [2021-11-23 02:16:58,672 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-23 02:16:58,672 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-23 02:16:58,672 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-11-23 02:16:58,672 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-11-23 02:16:58,672 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_release_fw [2021-11-23 02:16:58,673 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_release_fw [2021-11-23 02:16:58,673 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_rxq_deinit [2021-11-23 02:16:58,673 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_rxq_deinit [2021-11-23 02:16:58,673 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-23 02:16:58,673 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-23 02:16:58,673 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_send_fw_load_cmd [2021-11-23 02:16:58,673 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_send_fw_load_cmd [2021-11-23 02:16:58,673 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_unlock [2021-11-23 02:16:58,674 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_unlock [2021-11-23 02:16:58,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:16:58,674 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_cmd_set_new_stn_del [2021-11-23 02:16:58,674 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_cmd_set_new_stn_del [2021-11-23 02:16:58,674 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_post_cmd [2021-11-23 02:16:58,674 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_post_cmd [2021-11-23 02:16:58,674 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_lookup_stream [2021-11-23 02:16:58,674 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_lookup_stream [2021-11-23 02:16:58,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u8 [2021-11-23 02:16:58,675 INFO L130 BoogieDeclarations]: Found specification of procedure IEEE80211_SKB_CB [2021-11-23 02:16:58,675 INFO L138 BoogieDeclarations]: Found implementation of procedure IEEE80211_SKB_CB [2021-11-23 02:16:58,675 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_enable [2021-11-23 02:16:58,675 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_enable [2021-11-23 02:17:00,112 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:17:00,124 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:17:05,828 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-23 02:17:20,415 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:17:24,004 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:17:24,004 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-23 02:17:24,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:17:24 BoogieIcfgContainer [2021-11-23 02:17:24,012 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:17:24,014 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:17:24,015 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:17:24,022 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:17:24,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:16:51" (1/3) ... [2021-11-23 02:17:24,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@281b34e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:17:24, skipping insertion in model container [2021-11-23 02:17:24,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:57" (2/3) ... [2021-11-23 02:17:24,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@281b34e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:17:24, skipping insertion in model container [2021-11-23 02:17:24,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:17:24" (3/3) ... [2021-11-23 02:17:24,026 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwl8k.ko-entry_point.cil.out.i [2021-11-23 02:17:24,033 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:17:24,033 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:17:24,124 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:17:24,143 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 02:17:24,143 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:17:24,243 INFO L276 IsEmpty]: Start isEmpty. Operand has 2420 states, 1537 states have (on average 1.3532856213402733) internal successors, (2080), 1607 states have internal predecessors, (2080), 722 states have call successors, (722), 160 states have call predecessors, (722), 159 states have return successors, (712), 702 states have call predecessors, (712), 712 states have call successors, (712) [2021-11-23 02:17:24,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-11-23 02:17:24,278 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:17:24,279 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 23, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:17:24,279 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:17:24,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:17:24,285 INFO L85 PathProgramCache]: Analyzing trace with hash 455843828, now seen corresponding path program 1 times [2021-11-23 02:17:24,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:17:24,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927826707] [2021-11-23 02:17:24,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:17:24,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:17:24,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:17:25,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1075 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2021-11-23 02:17:25,402 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:17:25,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927826707] [2021-11-23 02:17:25,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927826707] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:17:25,403 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:17:25,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:17:25,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406090548] [2021-11-23 02:17:25,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:17:25,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:17:25,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:17:25,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:17:25,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:17:25,504 INFO L87 Difference]: Start difference. First operand has 2420 states, 1537 states have (on average 1.3532856213402733) internal successors, (2080), 1607 states have internal predecessors, (2080), 722 states have call successors, (722), 160 states have call predecessors, (722), 159 states have return successors, (712), 702 states have call predecessors, (712), 712 states have call successors, (712) Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2021-11-23 02:17:27,629 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:17:30,754 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:17:33,602 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:17:38,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:17:38,771 INFO L93 Difference]: Finished difference Result 7120 states and 10386 transitions. [2021-11-23 02:17:38,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:17:38,778 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) Word has length 186 [2021-11-23 02:17:38,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:17:38,855 INFO L225 Difference]: With dead ends: 7120 [2021-11-23 02:17:38,855 INFO L226 Difference]: Without dead ends: 4711 [2021-11-23 02:17:38,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:17:38,887 INFO L933 BasicCegarLoop]: 3906 mSDtfsCounter, 3388 mSDsluCounter, 3498 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3388 SdHoareTripleChecker+Valid, 7122 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2021-11-23 02:17:38,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3388 Valid, 7122 Invalid, 588 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 578 Invalid, 1 Unknown, 0 Unchecked, 12.7s Time] [2021-11-23 02:17:38,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4711 states. [2021-11-23 02:17:39,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4711 to 4711. [2021-11-23 02:17:39,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4711 states, 3005 states have (on average 1.3414309484193012) internal successors, (4031), 3121 states have internal predecessors, (4031), 1389 states have call successors, (1389), 317 states have call predecessors, (1389), 316 states have return successors, (1388), 1368 states have call predecessors, (1388), 1388 states have call successors, (1388) [2021-11-23 02:17:39,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4711 states to 4711 states and 6808 transitions. [2021-11-23 02:17:39,679 INFO L78 Accepts]: Start accepts. Automaton has 4711 states and 6808 transitions. Word has length 186 [2021-11-23 02:17:39,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:17:39,682 INFO L470 AbstractCegarLoop]: Abstraction has 4711 states and 6808 transitions. [2021-11-23 02:17:39,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2021-11-23 02:17:39,682 INFO L276 IsEmpty]: Start isEmpty. Operand 4711 states and 6808 transitions. [2021-11-23 02:17:39,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-11-23 02:17:39,691 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:17:39,692 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 23, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:17:39,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:17:39,693 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:17:39,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:17:39,695 INFO L85 PathProgramCache]: Analyzing trace with hash -220525492, now seen corresponding path program 1 times [2021-11-23 02:17:39,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:17:39,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059852597] [2021-11-23 02:17:39,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:17:39,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:17:39,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:17:40,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1075 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2021-11-23 02:17:40,223 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:17:40,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059852597] [2021-11-23 02:17:40,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059852597] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:17:40,224 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:17:40,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:17:40,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791835041] [2021-11-23 02:17:40,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:17:40,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:17:40,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:17:40,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:17:40,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:17:40,228 INFO L87 Difference]: Start difference. First operand 4711 states and 6808 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-23 02:17:42,852 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:17:47,422 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:17:48,994 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:17:58,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:17:58,680 INFO L93 Difference]: Finished difference Result 9361 states and 13573 transitions. [2021-11-23 02:17:58,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:17:58,684 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 189 [2021-11-23 02:17:58,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:17:58,801 INFO L225 Difference]: With dead ends: 9361 [2021-11-23 02:17:58,801 INFO L226 Difference]: Without dead ends: 9356 [2021-11-23 02:17:58,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:17:58,815 INFO L933 BasicCegarLoop]: 4036 mSDtfsCounter, 3428 mSDsluCounter, 7714 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3428 SdHoareTripleChecker+Valid, 11178 SdHoareTripleChecker+Invalid, 896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:17:58,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3428 Valid, 11178 Invalid, 896 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 894 Invalid, 1 Unknown, 0 Unchecked, 17.9s Time] [2021-11-23 02:17:58,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9356 states. [2021-11-23 02:17:59,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9356 to 9348. [2021-11-23 02:17:59,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9348 states, 5968 states have (on average 1.342995978552279) internal successors, (8015), 6200 states have internal predecessors, (8015), 2747 states have call successors, (2747), 633 states have call predecessors, (2747), 632 states have return successors, (2794), 2706 states have call predecessors, (2794), 2746 states have call successors, (2794) [2021-11-23 02:17:59,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9348 states to 9348 states and 13556 transitions. [2021-11-23 02:17:59,752 INFO L78 Accepts]: Start accepts. Automaton has 9348 states and 13556 transitions. Word has length 189 [2021-11-23 02:17:59,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:17:59,755 INFO L470 AbstractCegarLoop]: Abstraction has 9348 states and 13556 transitions. [2021-11-23 02:17:59,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-23 02:17:59,757 INFO L276 IsEmpty]: Start isEmpty. Operand 9348 states and 13556 transitions. [2021-11-23 02:17:59,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-11-23 02:17:59,781 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:17:59,781 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 23, 7, 7, 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] [2021-11-23 02:17:59,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:17:59,782 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:17:59,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:17:59,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1489383950, now seen corresponding path program 1 times [2021-11-23 02:17:59,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:17:59,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152619639] [2021-11-23 02:17:59,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:17:59,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:18:00,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:18:00,250 INFO L134 CoverageAnalysis]: Checked inductivity of 1078 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2021-11-23 02:18:00,251 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:18:00,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152619639] [2021-11-23 02:18:00,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152619639] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:18:00,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:18:00,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:18:00,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846228198] [2021-11-23 02:18:00,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:18:00,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:18:00,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:18:00,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:18:00,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:18:00,256 INFO L87 Difference]: Start difference. First operand 9348 states and 13556 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-23 02:18:01,649 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:18:07,771 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:18:12,947 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:18:13,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:18:13,133 INFO L93 Difference]: Finished difference Result 21242 states and 30539 transitions. [2021-11-23 02:18:13,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:18:13,139 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 224 [2021-11-23 02:18:13,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:18:13,263 INFO L225 Difference]: With dead ends: 21242 [2021-11-23 02:18:13,263 INFO L226 Difference]: Without dead ends: 11955 [2021-11-23 02:18:13,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:18:13,349 INFO L933 BasicCegarLoop]: 3399 mSDtfsCounter, 976 mSDsluCounter, 3258 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 6377 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:18:13,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [976 Valid, 6377 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 700 Invalid, 1 Unknown, 0 Unchecked, 12.5s Time] [2021-11-23 02:18:13,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11955 states. [2021-11-23 02:18:14,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11955 to 11948. [2021-11-23 02:18:14,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11948 states, 7626 states have (on average 1.339234198793601) internal successors, (10213), 7928 states have internal predecessors, (10213), 3399 states have call successors, (3399), 923 states have call predecessors, (3399), 922 states have return successors, (3452), 3356 states have call predecessors, (3452), 3398 states have call successors, (3452) [2021-11-23 02:18:14,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11948 states to 11948 states and 17064 transitions. [2021-11-23 02:18:14,261 INFO L78 Accepts]: Start accepts. Automaton has 11948 states and 17064 transitions. Word has length 224 [2021-11-23 02:18:14,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:18:14,263 INFO L470 AbstractCegarLoop]: Abstraction has 11948 states and 17064 transitions. [2021-11-23 02:18:14,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-23 02:18:14,264 INFO L276 IsEmpty]: Start isEmpty. Operand 11948 states and 17064 transitions. [2021-11-23 02:18:14,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2021-11-23 02:18:14,291 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:18:14,292 INFO L514 BasicCegarLoop]: trace histogram [27, 27, 27, 7, 7, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:18:14,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:18:14,293 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:18:14,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:18:14,294 INFO L85 PathProgramCache]: Analyzing trace with hash -263507656, now seen corresponding path program 1 times [2021-11-23 02:18:14,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:18:14,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646823510] [2021-11-23 02:18:14,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:18:14,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:18:14,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:18:14,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1480 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 1467 trivial. 0 not checked. [2021-11-23 02:18:14,779 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:18:14,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646823510] [2021-11-23 02:18:14,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646823510] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:18:14,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:18:14,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:18:14,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964532772] [2021-11-23 02:18:14,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:18:14,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:18:14,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:18:14,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:18:14,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:18:14,783 INFO L87 Difference]: Start difference. First operand 11948 states and 17064 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2021-11-23 02:18:16,862 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:18:22,422 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:18:26,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:18:26,199 INFO L93 Difference]: Finished difference Result 32820 states and 47035 transitions. [2021-11-23 02:18:26,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:18:26,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 256 [2021-11-23 02:18:26,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:18:26,356 INFO L225 Difference]: With dead ends: 32820 [2021-11-23 02:18:26,356 INFO L226 Difference]: Without dead ends: 20933 [2021-11-23 02:18:26,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:18:26,454 INFO L933 BasicCegarLoop]: 4420 mSDtfsCounter, 3239 mSDsluCounter, 3302 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 72 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3239 SdHoareTripleChecker+Valid, 7442 SdHoareTripleChecker+Invalid, 828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2021-11-23 02:18:26,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3239 Valid, 7442 Invalid, 828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 755 Invalid, 1 Unknown, 0 Unchecked, 10.8s Time] [2021-11-23 02:18:26,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20933 states. [2021-11-23 02:18:27,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20933 to 20926. [2021-11-23 02:18:27,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20926 states, 13406 states have (on average 1.3345516932716694) internal successors, (17891), 13942 states have internal predecessors, (17891), 5965 states have call successors, (5965), 1555 states have call predecessors, (5965), 1554 states have return successors, (6052), 5880 states have call predecessors, (6052), 5964 states have call successors, (6052) [2021-11-23 02:18:28,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20926 states to 20926 states and 29908 transitions. [2021-11-23 02:18:28,015 INFO L78 Accepts]: Start accepts. Automaton has 20926 states and 29908 transitions. Word has length 256 [2021-11-23 02:18:28,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:18:28,016 INFO L470 AbstractCegarLoop]: Abstraction has 20926 states and 29908 transitions. [2021-11-23 02:18:28,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2021-11-23 02:18:28,017 INFO L276 IsEmpty]: Start isEmpty. Operand 20926 states and 29908 transitions. [2021-11-23 02:18:28,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2021-11-23 02:18:28,048 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:18:28,049 INFO L514 BasicCegarLoop]: trace histogram [27, 27, 27, 7, 7, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:18:28,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 02:18:28,050 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:18:28,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:18:28,052 INFO L85 PathProgramCache]: Analyzing trace with hash -329421428, now seen corresponding path program 1 times [2021-11-23 02:18:28,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:18:28,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762477282] [2021-11-23 02:18:28,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:18:28,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:18:28,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:18:28,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1480 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1470 trivial. 0 not checked. [2021-11-23 02:18:28,440 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:18:28,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762477282] [2021-11-23 02:18:28,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762477282] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:18:28,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:18:28,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:18:28,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931737076] [2021-11-23 02:18:28,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:18:28,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:18:28,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:18:28,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:18:28,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:18:28,444 INFO L87 Difference]: Start difference. First operand 20926 states and 29908 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (37), 2 states have call predecessors, (37), 1 states have call successors, (37) [2021-11-23 02:18:30,247 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:18:32,336 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:18:36,354 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:18:38,386 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:18:41,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:18:41,417 INFO L93 Difference]: Finished difference Result 31396 states and 44988 transitions. [2021-11-23 02:18:41,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:18:41,421 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), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (37), 2 states have call predecessors, (37), 1 states have call successors, (37) Word has length 256 [2021-11-23 02:18:41,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:18:41,569 INFO L225 Difference]: With dead ends: 31396 [2021-11-23 02:18:41,570 INFO L226 Difference]: Without dead ends: 20950 [2021-11-23 02:18:41,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:18:41,624 INFO L933 BasicCegarLoop]: 3175 mSDtfsCounter, 4 mSDsluCounter, 3452 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 6344 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:18:41,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 6344 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 568 Invalid, 2 Unknown, 0 Unchecked, 12.4s Time] [2021-11-23 02:18:41,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20950 states. [2021-11-23 02:18:42,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20950 to 20950. [2021-11-23 02:18:42,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20950 states, 13424 states have (on average 1.3341030989272944) internal successors, (17909), 13966 states have internal predecessors, (17909), 5965 states have call successors, (5965), 1555 states have call predecessors, (5965), 1560 states have return successors, (6058), 5880 states have call predecessors, (6058), 5964 states have call successors, (6058) [2021-11-23 02:18:43,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20950 states to 20950 states and 29932 transitions. [2021-11-23 02:18:43,053 INFO L78 Accepts]: Start accepts. Automaton has 20950 states and 29932 transitions. Word has length 256 [2021-11-23 02:18:43,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:18:43,058 INFO L470 AbstractCegarLoop]: Abstraction has 20950 states and 29932 transitions. [2021-11-23 02:18:43,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (37), 2 states have call predecessors, (37), 1 states have call successors, (37) [2021-11-23 02:18:43,059 INFO L276 IsEmpty]: Start isEmpty. Operand 20950 states and 29932 transitions. [2021-11-23 02:18:43,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2021-11-23 02:18:43,094 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:18:43,094 INFO L514 BasicCegarLoop]: trace histogram [27, 27, 27, 7, 7, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:18:43,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 02:18:43,095 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:18:43,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:18:43,096 INFO L85 PathProgramCache]: Analyzing trace with hash -331909365, now seen corresponding path program 1 times [2021-11-23 02:18:43,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:18:43,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171744692] [2021-11-23 02:18:43,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:18:43,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:18:43,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:18:43,943 INFO L134 CoverageAnalysis]: Checked inductivity of 1480 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1470 trivial. 0 not checked. [2021-11-23 02:18:43,943 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:18:43,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171744692] [2021-11-23 02:18:43,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171744692] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:18:43,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:18:43,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 02:18:43,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970576978] [2021-11-23 02:18:43,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:18:43,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 02:18:43,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:18:43,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 02:18:43,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:18:43,946 INFO L87 Difference]: Start difference. First operand 20950 states and 29932 transitions. Second operand has 8 states, 8 states have (on average 11.25) internal successors, (90), 7 states have internal predecessors, (90), 4 states have call successors, (38), 4 states have call predecessors, (38), 2 states have return successors, (37), 4 states have call predecessors, (37), 3 states have call successors, (37) [2021-11-23 02:18:46,019 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:18:54,624 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:18:56,690 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:18:58,752 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:19:04,272 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:19:06,287 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:19:08,306 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:19:11,856 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:19:13,401 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:19:14,709 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:19:28,900 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:19:30,953 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:19:33,006 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:19:37,966 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:19:40,004 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:19:42,029 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:19:49,886 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:19:53,537 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:20:08,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:20:08,566 INFO L93 Difference]: Finished difference Result 48579 states and 69503 transitions. [2021-11-23 02:20:08,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 02:20:08,566 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 7 states have internal predecessors, (90), 4 states have call successors, (38), 4 states have call predecessors, (38), 2 states have return successors, (37), 4 states have call predecessors, (37), 3 states have call successors, (37) Word has length 257 [2021-11-23 02:20:08,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:20:08,760 INFO L225 Difference]: With dead ends: 48579 [2021-11-23 02:20:08,760 INFO L226 Difference]: Without dead ends: 27690 [2021-11-23 02:20:08,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-23 02:20:08,850 INFO L933 BasicCegarLoop]: 4099 mSDtfsCounter, 6568 mSDsluCounter, 6044 mSDsCounter, 0 mSdLazyCounter, 18009 mSolverCounterSat, 3578 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 77.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7643 SdHoareTripleChecker+Valid, 9715 SdHoareTripleChecker+Invalid, 21602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3578 IncrementalHoareTripleChecker+Valid, 18009 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 82.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:20:08,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7643 Valid, 9715 Invalid, 21602 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3578 Valid, 18009 Invalid, 15 Unknown, 0 Unchecked, 82.9s Time] [2021-11-23 02:20:08,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27690 states. [2021-11-23 02:20:10,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27690 to 27368. [2021-11-23 02:20:10,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27368 states, 17427 states have (on average 1.3236357376484764) internal successors, (23067), 18101 states have internal predecessors, (23067), 7862 states have call successors, (7862), 2019 states have call predecessors, (7862), 2078 states have return successors, (8121), 7797 states have call predecessors, (8121), 7861 states have call successors, (8121) [2021-11-23 02:20:10,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27368 states to 27368 states and 39050 transitions. [2021-11-23 02:20:10,791 INFO L78 Accepts]: Start accepts. Automaton has 27368 states and 39050 transitions. Word has length 257 [2021-11-23 02:20:10,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:20:10,792 INFO L470 AbstractCegarLoop]: Abstraction has 27368 states and 39050 transitions. [2021-11-23 02:20:10,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 7 states have internal predecessors, (90), 4 states have call successors, (38), 4 states have call predecessors, (38), 2 states have return successors, (37), 4 states have call predecessors, (37), 3 states have call successors, (37) [2021-11-23 02:20:10,792 INFO L276 IsEmpty]: Start isEmpty. Operand 27368 states and 39050 transitions. [2021-11-23 02:20:11,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2021-11-23 02:20:11,184 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:20:11,185 INFO L514 BasicCegarLoop]: trace histogram [28, 28, 28, 7, 7, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:20:11,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 02:20:11,185 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:20:11,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:20:11,186 INFO L85 PathProgramCache]: Analyzing trace with hash -89145569, now seen corresponding path program 1 times [2021-11-23 02:20:11,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:20:11,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702927961] [2021-11-23 02:20:11,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:20:11,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:20:11,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:20:11,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1632 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1622 trivial. 0 not checked. [2021-11-23 02:20:11,682 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:20:11,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702927961] [2021-11-23 02:20:11,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702927961] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:20:11,682 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:20:11,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:20:11,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525718380] [2021-11-23 02:20:11,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:20:11,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:20:11,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:20:11,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:20:11,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:20:11,687 INFO L87 Difference]: Start difference. First operand 27368 states and 39050 transitions. Second operand has 4 states, 4 states have (on average 46.5) internal successors, (186), 4 states have internal predecessors, (186), 2 states have call successors, (63), 2 states have call predecessors, (63), 2 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2021-11-23 02:20:13,762 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:20:18,488 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:20:20,100 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:20:25,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:20:25,082 INFO L93 Difference]: Finished difference Result 54923 states and 78489 transitions. [2021-11-23 02:20:25,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:20:25,086 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.5) internal successors, (186), 4 states have internal predecessors, (186), 2 states have call successors, (63), 2 states have call predecessors, (63), 2 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) Word has length 432 [2021-11-23 02:20:25,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:20:25,262 INFO L225 Difference]: With dead ends: 54923 [2021-11-23 02:20:25,262 INFO L226 Difference]: Without dead ends: 27624 [2021-11-23 02:20:25,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:20:25,373 INFO L933 BasicCegarLoop]: 3179 mSDtfsCounter, 16 mSDsluCounter, 6908 mSDsCounter, 0 mSdLazyCounter, 860 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 9524 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 860 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:20:25,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 9524 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 860 Invalid, 2 Unknown, 0 Unchecked, 12.5s Time] [2021-11-23 02:20:25,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27624 states. [2021-11-23 02:20:26,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27624 to 27400. [2021-11-23 02:20:26,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27400 states, 17459 states have (on average 1.3230425568474713) internal successors, (23099), 18133 states have internal predecessors, (23099), 7862 states have call successors, (7862), 2019 states have call predecessors, (7862), 2078 states have return successors, (8121), 7797 states have call predecessors, (8121), 7861 states have call successors, (8121) [2021-11-23 02:20:27,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27400 states to 27400 states and 39082 transitions. [2021-11-23 02:20:27,083 INFO L78 Accepts]: Start accepts. Automaton has 27400 states and 39082 transitions. Word has length 432 [2021-11-23 02:20:27,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:20:27,084 INFO L470 AbstractCegarLoop]: Abstraction has 27400 states and 39082 transitions. [2021-11-23 02:20:27,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.5) internal successors, (186), 4 states have internal predecessors, (186), 2 states have call successors, (63), 2 states have call predecessors, (63), 2 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2021-11-23 02:20:27,085 INFO L276 IsEmpty]: Start isEmpty. Operand 27400 states and 39082 transitions. [2021-11-23 02:20:27,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2021-11-23 02:20:27,172 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:20:27,172 INFO L514 BasicCegarLoop]: trace histogram [28, 28, 28, 7, 7, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:20:27,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 02:20:27,173 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:20:27,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:20:27,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1159218044, now seen corresponding path program 1 times [2021-11-23 02:20:27,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:20:27,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948733212] [2021-11-23 02:20:27,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:20:27,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:20:27,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:20:27,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1632 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1622 trivial. 0 not checked. [2021-11-23 02:20:27,899 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:20:27,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948733212] [2021-11-23 02:20:27,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948733212] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:20:27,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:20:27,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:20:27,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456347931] [2021-11-23 02:20:27,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:20:27,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:20:27,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:20:27,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:20:27,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:20:27,904 INFO L87 Difference]: Start difference. First operand 27400 states and 39082 transitions. Second operand has 4 states, 4 states have (on average 46.5) internal successors, (186), 4 states have internal predecessors, (186), 2 states have call successors, (63), 2 states have call predecessors, (63), 2 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2021-11-23 02:20:29,980 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:20:31,713 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:20:36,029 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:20:40,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:20:40,948 INFO L93 Difference]: Finished difference Result 54803 states and 78269 transitions. [2021-11-23 02:20:40,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:20:40,952 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.5) internal successors, (186), 4 states have internal predecessors, (186), 2 states have call successors, (63), 2 states have call predecessors, (63), 2 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) Word has length 432 [2021-11-23 02:20:40,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:20:41,140 INFO L225 Difference]: With dead ends: 54803 [2021-11-23 02:20:41,140 INFO L226 Difference]: Without dead ends: 27472 [2021-11-23 02:20:41,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:20:41,443 INFO L933 BasicCegarLoop]: 3178 mSDtfsCounter, 7 mSDsluCounter, 6885 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 9503 SdHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:20:41,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 9503 Invalid, 883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 878 Invalid, 2 Unknown, 0 Unchecked, 12.1s Time] [2021-11-23 02:20:41,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27472 states. [2021-11-23 02:20:42,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27472 to 27440. [2021-11-23 02:20:42,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27440 states, 17491 states have (on average 1.3224515465096336) internal successors, (23131), 18169 states have internal predecessors, (23131), 7866 states have call successors, (7866), 2019 states have call predecessors, (7866), 2082 states have return successors, (8129), 7801 states have call predecessors, (8129), 7865 states have call successors, (8129) [2021-11-23 02:20:42,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27440 states to 27440 states and 39126 transitions. [2021-11-23 02:20:43,001 INFO L78 Accepts]: Start accepts. Automaton has 27440 states and 39126 transitions. Word has length 432 [2021-11-23 02:20:43,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:20:43,004 INFO L470 AbstractCegarLoop]: Abstraction has 27440 states and 39126 transitions. [2021-11-23 02:20:43,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.5) internal successors, (186), 4 states have internal predecessors, (186), 2 states have call successors, (63), 2 states have call predecessors, (63), 2 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2021-11-23 02:20:43,004 INFO L276 IsEmpty]: Start isEmpty. Operand 27440 states and 39126 transitions. [2021-11-23 02:20:43,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2021-11-23 02:20:43,087 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:20:43,088 INFO L514 BasicCegarLoop]: trace histogram [28, 28, 28, 8, 8, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:20:43,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 02:20:43,088 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:20:43,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:20:43,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1941308065, now seen corresponding path program 1 times [2021-11-23 02:20:43,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:20:43,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799376502] [2021-11-23 02:20:43,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:20:43,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:20:43,320 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:20:43,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1437128833] [2021-11-23 02:20:43,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:20:43,321 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:20:43,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1144583d-cf88-4a38-afe1-58df749cefec/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:20:43,327 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1144583d-cf88-4a38-afe1-58df749cefec/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:20:43,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1144583d-cf88-4a38-afe1-58df749cefec/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:20:45,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:20:45,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 5605 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 02:20:46,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:20:47,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 1509 trivial. 0 not checked. [2021-11-23 02:20:47,057 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:20:47,058 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:20:47,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799376502] [2021-11-23 02:20:47,059 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:20:47,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437128833] [2021-11-23 02:20:47,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437128833] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:20:47,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:20:47,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:20:47,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016026904] [2021-11-23 02:20:47,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:20:47,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:20:47,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:20:47,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:20:47,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:20:47,064 INFO L87 Difference]: Start difference. First operand 27440 states and 39126 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 2 states have call successors, (68), 2 states have call predecessors, (68), 2 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) [2021-11-23 02:20:49,142 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:20:51,930 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:20:53,951 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:20:57,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:20:57,784 INFO L93 Difference]: Finished difference Result 54871 states and 78365 transitions. [2021-11-23 02:20:57,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:20:57,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 2 states have call successors, (68), 2 states have call predecessors, (68), 2 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) Word has length 446 [2021-11-23 02:20:57,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:20:57,924 INFO L225 Difference]: With dead ends: 54871 [2021-11-23 02:20:57,924 INFO L226 Difference]: Without dead ends: 27500 [2021-11-23 02:20:58,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 444 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:20:58,040 INFO L933 BasicCegarLoop]: 3177 mSDtfsCounter, 3 mSDsluCounter, 3454 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 6350 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2021-11-23 02:20:58,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 6350 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 568 Invalid, 2 Unknown, 0 Unchecked, 9.8s Time] [2021-11-23 02:20:58,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27500 states. [2021-11-23 02:20:59,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27500 to 27452. [2021-11-23 02:20:59,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27452 states, 17503 states have (on average 1.3222304747757527) internal successors, (23143), 18181 states have internal predecessors, (23143), 7866 states have call successors, (7866), 2019 states have call predecessors, (7866), 2082 states have return successors, (8129), 7801 states have call predecessors, (8129), 7865 states have call successors, (8129) [2021-11-23 02:20:59,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27452 states to 27452 states and 39138 transitions. [2021-11-23 02:20:59,744 INFO L78 Accepts]: Start accepts. Automaton has 27452 states and 39138 transitions. Word has length 446 [2021-11-23 02:20:59,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:20:59,746 INFO L470 AbstractCegarLoop]: Abstraction has 27452 states and 39138 transitions. [2021-11-23 02:20:59,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 2 states have call successors, (68), 2 states have call predecessors, (68), 2 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) [2021-11-23 02:20:59,746 INFO L276 IsEmpty]: Start isEmpty. Operand 27452 states and 39138 transitions. [2021-11-23 02:20:59,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2021-11-23 02:20:59,821 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:20:59,822 INFO L514 BasicCegarLoop]: trace histogram [28, 28, 28, 8, 8, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:20:59,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1144583d-cf88-4a38-afe1-58df749cefec/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:21:00,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1144583d-cf88-4a38-afe1-58df749cefec/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:21:00,050 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:21:00,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:21:00,051 INFO L85 PathProgramCache]: Analyzing trace with hash 2096498773, now seen corresponding path program 1 times [2021-11-23 02:21:00,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:21:00,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213986191] [2021-11-23 02:21:00,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:21:00,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:21:00,291 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:21:00,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [490594903] [2021-11-23 02:21:00,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:21:00,292 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:21:00,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1144583d-cf88-4a38-afe1-58df749cefec/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:21:00,293 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1144583d-cf88-4a38-afe1-58df749cefec/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:21:00,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1144583d-cf88-4a38-afe1-58df749cefec/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:21:02,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:21:02,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 5673 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 02:21:02,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:21:03,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1654 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 1507 trivial. 0 not checked. [2021-11-23 02:21:03,996 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:21:03,996 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:21:03,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213986191] [2021-11-23 02:21:03,997 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:21:03,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490594903] [2021-11-23 02:21:03,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490594903] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:21:03,997 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:21:03,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:21:03,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624704537] [2021-11-23 02:21:03,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:21:03,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:21:03,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:21:04,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:21:04,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:21:04,001 INFO L87 Difference]: Start difference. First operand 27452 states and 39138 transitions. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 2 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2021-11-23 02:21:06,067 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:21:15,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:21:15,558 INFO L93 Difference]: Finished difference Result 54899 states and 78353 transitions. [2021-11-23 02:21:15,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:21:15,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 2 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) Word has length 452 [2021-11-23 02:21:15,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:21:15,729 INFO L225 Difference]: With dead ends: 54899 [2021-11-23 02:21:15,729 INFO L226 Difference]: Without dead ends: 27516 [2021-11-23 02:21:15,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 450 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:21:15,833 INFO L933 BasicCegarLoop]: 3175 mSDtfsCounter, 1 mSDsluCounter, 3454 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6347 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2021-11-23 02:21:15,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 6347 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 571 Invalid, 1 Unknown, 0 Unchecked, 10.6s Time] [2021-11-23 02:21:15,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27516 states. [2021-11-23 02:21:16,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27516 to 27484. [2021-11-23 02:21:17,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27484 states, 17535 states have (on average 1.3216424294268605) internal successors, (23175), 18213 states have internal predecessors, (23175), 7866 states have call successors, (7866), 2019 states have call predecessors, (7866), 2082 states have return successors, (8129), 7801 states have call predecessors, (8129), 7865 states have call successors, (8129) [2021-11-23 02:21:17,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27484 states to 27484 states and 39170 transitions. [2021-11-23 02:21:17,129 INFO L78 Accepts]: Start accepts. Automaton has 27484 states and 39170 transitions. Word has length 452 [2021-11-23 02:21:17,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:21:17,130 INFO L470 AbstractCegarLoop]: Abstraction has 27484 states and 39170 transitions. [2021-11-23 02:21:17,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 2 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2021-11-23 02:21:17,131 INFO L276 IsEmpty]: Start isEmpty. Operand 27484 states and 39170 transitions. [2021-11-23 02:21:17,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2021-11-23 02:21:17,360 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:21:17,361 INFO L514 BasicCegarLoop]: trace histogram [28, 28, 28, 8, 8, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:21:17,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1144583d-cf88-4a38-afe1-58df749cefec/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:21:17,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1144583d-cf88-4a38-afe1-58df749cefec/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-23 02:21:17,590 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:21:17,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:21:17,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1940033877, now seen corresponding path program 1 times [2021-11-23 02:21:17,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:21:17,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156914486] [2021-11-23 02:21:17,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:21:17,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:21:17,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:21:18,143 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:21:18,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156914486] [2021-11-23 02:21:18,144 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-23 02:21:18,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507080326] [2021-11-23 02:21:18,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:21:18,144 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:21:18,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1144583d-cf88-4a38-afe1-58df749cefec/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:21:18,147 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1144583d-cf88-4a38-afe1-58df749cefec/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:21:18,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1144583d-cf88-4a38-afe1-58df749cefec/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 02:21:20,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:21:20,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 5995 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:21:20,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:21:21,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1667 backedges. 150 proven. 2 refuted. 0 times theorem prover too weak. 1515 trivial. 0 not checked. [2021-11-23 02:21:21,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:21:22,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1667 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 1652 trivial. 0 not checked. [2021-11-23 02:21:22,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507080326] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:21:22,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [734350456] [2021-11-23 02:21:22,697 INFO L159 IcfgInterpreter]: Started Sifa with 305 locations of interest [2021-11-23 02:21:22,697 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:21:22,705 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:21:22,712 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:21:22,713 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:21:32,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:21:34,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:21:34,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:21:34,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:21:34,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:21:34,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:21:34,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:21:37,609 INFO L244 Elim1Store]: Index analysis took 5073 ms