./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--micrel--ks8851.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c727e-8bb4-4d5b-948d-da7ad899cb97/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c727e-8bb4-4d5b-948d-da7ad899cb97/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c727e-8bb4-4d5b-948d-da7ad899cb97/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c727e-8bb4-4d5b-948d-da7ad899cb97/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--micrel--ks8851.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c727e-8bb4-4d5b-948d-da7ad899cb97/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c727e-8bb4-4d5b-948d-da7ad899cb97/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash fd18c623be1f9191aaeb26a7b3c18eeb579e4f661e34cc28939d56ae6edd64a3 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:05:44,680 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:05:44,682 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:05:44,721 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:05:44,721 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:05:44,725 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:05:44,728 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:05:44,731 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:05:44,735 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:05:44,740 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:05:44,741 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:05:44,742 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:05:44,742 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:05:44,743 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:05:44,744 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:05:44,745 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:05:44,745 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:05:44,746 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:05:44,748 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:05:44,749 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:05:44,756 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:05:44,757 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:05:44,761 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:05:44,762 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:05:44,774 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:05:44,774 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:05:44,775 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:05:44,775 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:05:44,776 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:05:44,777 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:05:44,777 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:05:44,778 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:05:44,778 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:05:44,779 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:05:44,780 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:05:44,780 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:05:44,781 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:05:44,781 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:05:44,781 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:05:44,782 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:05:44,787 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:05:44,788 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c727e-8bb4-4d5b-948d-da7ad899cb97/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:05:44,837 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:05:44,837 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:05:44,838 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:05:44,838 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:05:44,839 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:05:44,839 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:05:44,839 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:05:44,839 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:05:44,839 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:05:44,840 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:05:44,841 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:05:44,841 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:05:44,841 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:05:44,841 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:05:44,841 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:05:44,842 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:05:44,842 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:05:44,842 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:05:44,843 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:05:44,843 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:05:44,843 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:05:44,843 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:05:44,843 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:05:44,844 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:05:44,844 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:05:44,844 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:05:44,844 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:05:44,844 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:05:44,844 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:05:44,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:05:44,845 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:05:44,845 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:05:44,845 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:05:44,846 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:05:44,846 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:05:44,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:05:44,846 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:05:44,846 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:05:44,846 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c727e-8bb4-4d5b-948d-da7ad899cb97/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c727e-8bb4-4d5b-948d-da7ad899cb97/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd18c623be1f9191aaeb26a7b3c18eeb579e4f661e34cc28939d56ae6edd64a3 [2022-11-03 02:05:45,172 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:05:45,209 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:05:45,212 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:05:45,213 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:05:45,214 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:05:45,216 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c727e-8bb4-4d5b-948d-da7ad899cb97/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--micrel--ks8851.ko-entry_point.cil.out.i [2022-11-03 02:05:45,296 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c727e-8bb4-4d5b-948d-da7ad899cb97/bin/utaipan-7li7fVZpFI/data/78ed5b5ae/a03a7b21b4604ec199bb3a2dde115708/FLAG88ad9db96 [2022-11-03 02:05:46,200 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:05:46,201 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c727e-8bb4-4d5b-948d-da7ad899cb97/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--micrel--ks8851.ko-entry_point.cil.out.i [2022-11-03 02:05:46,245 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c727e-8bb4-4d5b-948d-da7ad899cb97/bin/utaipan-7li7fVZpFI/data/78ed5b5ae/a03a7b21b4604ec199bb3a2dde115708/FLAG88ad9db96 [2022-11-03 02:05:46,681 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c727e-8bb4-4d5b-948d-da7ad899cb97/bin/utaipan-7li7fVZpFI/data/78ed5b5ae/a03a7b21b4604ec199bb3a2dde115708 [2022-11-03 02:05:46,683 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:05:46,687 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:05:46,693 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:05:46,693 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:05:46,697 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:05:46,699 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:05:46" (1/1) ... [2022-11-03 02:05:46,700 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7274ce3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:46, skipping insertion in model container [2022-11-03 02:05:46,701 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:05:46" (1/1) ... [2022-11-03 02:05:46,708 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:05:46,847 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:05:47,960 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_760c727e-8bb4-4d5b-948d-da7ad899cb97/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--micrel--ks8851.ko-entry_point.cil.out.i[164502,164515] [2022-11-03 02:05:49,076 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:05:49,124 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:05:49,308 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_760c727e-8bb4-4d5b-948d-da7ad899cb97/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--micrel--ks8851.ko-entry_point.cil.out.i[164502,164515] [2022-11-03 02:05:49,535 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:05:49,699 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:05:49,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:49 WrapperNode [2022-11-03 02:05:49,700 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:05:49,701 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:05:49,701 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:05:49,701 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:05:49,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:49" (1/1) ... [2022-11-03 02:05:49,818 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:49" (1/1) ... [2022-11-03 02:05:49,977 INFO L138 Inliner]: procedures = 267, calls = 1404, calls flagged for inlining = 132, calls inlined = 127, statements flattened = 3470 [2022-11-03 02:05:49,977 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:05:49,978 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:05:49,978 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:05:49,979 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:05:49,988 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:49" (1/1) ... [2022-11-03 02:05:49,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:49" (1/1) ... [2022-11-03 02:05:50,009 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:49" (1/1) ... [2022-11-03 02:05:50,009 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:49" (1/1) ... [2022-11-03 02:05:50,120 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:49" (1/1) ... [2022-11-03 02:05:50,146 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:49" (1/1) ... [2022-11-03 02:05:50,242 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:49" (1/1) ... [2022-11-03 02:05:50,268 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:49" (1/1) ... [2022-11-03 02:05:50,315 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:05:50,324 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:05:50,325 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:05:50,325 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:05:50,326 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:49" (1/1) ... [2022-11-03 02:05:50,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:05:50,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c727e-8bb4-4d5b-948d-da7ad899cb97/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:05:50,358 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c727e-8bb4-4d5b-948d-da7ad899cb97/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:05:50,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c727e-8bb4-4d5b-948d-da7ad899cb97/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:05:50,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 02:05:50,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 02:05:50,403 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 02:05:50,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 02:05:50,404 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_is_valid [2022-11-03 02:05:50,404 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_is_valid [2022-11-03 02:05:50,404 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_set_mac_address [2022-11-03 02:05:50,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_set_mac_address [2022-11-03 02:05:50,404 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_net_open [2022-11-03 02:05:50,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_net_open [2022-11-03 02:05:50,405 INFO L130 BoogieDeclarations]: Found specification of procedure spi_sync [2022-11-03 02:05:50,405 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_sync [2022-11-03 02:05:50,405 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:05:50,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:05:50,406 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2022-11-03 02:05:50,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2022-11-03 02:05:50,406 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-03 02:05:50,406 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-03 02:05:50,406 INFO L130 BoogieDeclarations]: Found specification of procedure devm_regulator_get [2022-11-03 02:05:50,406 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_regulator_get [2022-11-03 02:05:50,407 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 02:05:50,407 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 02:05:50,407 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 02:05:50,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 02:05:50,407 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_resume [2022-11-03 02:05:50,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_resume [2022-11-03 02:05:50,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 02:05:50,408 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 02:05:50,408 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_1 [2022-11-03 02:05:50,408 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_1 [2022-11-03 02:05:50,409 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 02:05:50,409 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 02:05:50,409 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-03 02:05:50,409 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-03 02:05:50,409 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_set_rx_mode [2022-11-03 02:05:50,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_set_rx_mode [2022-11-03 02:05:50,410 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 02:05:50,410 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 02:05:50,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:05:50,410 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-03 02:05:50,410 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-03 02:05:50,411 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_set_powermode [2022-11-03 02:05:50,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_set_powermode [2022-11-03 02:05:50,411 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_empty [2022-11-03 02:05:50,411 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_empty [2022-11-03 02:05:50,411 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-03 02:05:50,412 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_net_stop [2022-11-03 02:05:50,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_net_stop [2022-11-03 02:05:50,412 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-03 02:05:50,412 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-03 02:05:50,412 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:05:50,413 INFO L130 BoogieDeclarations]: Found specification of procedure eeprom_93cx6_wren [2022-11-03 02:05:50,413 INFO L138 BoogieDeclarations]: Found implementation of procedure eeprom_93cx6_wren [2022-11-03 02:05:50,413 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2022-11-03 02:05:50,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2022-11-03 02:05:50,415 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-03 02:05:50,415 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-03 02:05:50,416 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-03 02:05:50,416 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-03 02:05:50,416 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2022-11-03 02:05:50,417 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 02:05:50,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 02:05:50,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:05:50,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:05:50,417 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_eeprom_release [2022-11-03 02:05:50,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_eeprom_release [2022-11-03 02:05:50,418 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_add_tail [2022-11-03 02:05:50,418 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_add_tail [2022-11-03 02:05:50,418 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2022-11-03 02:05:50,418 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2022-11-03 02:05:50,418 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-03 02:05:50,419 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-03 02:05:50,419 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-03 02:05:50,420 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-03 02:05:50,420 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-03 02:05:50,420 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-03 02:05:50,420 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-03 02:05:50,420 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-03 02:05:50,421 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-03 02:05:50,421 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-03 02:05:50,421 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_irq [2022-11-03 02:05:50,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_irq [2022-11-03 02:05:50,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 02:05:50,422 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-03 02:05:50,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-03 02:05:50,423 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_enable [2022-11-03 02:05:50,423 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_enable [2022-11-03 02:05:50,423 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-11-03 02:05:50,424 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-11-03 02:05:50,425 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-03 02:05:50,425 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-03 02:05:50,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 02:05:50,426 INFO L130 BoogieDeclarations]: Found specification of procedure flush_work [2022-11-03 02:05:50,426 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_work [2022-11-03 02:05:50,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:05:50,427 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-03 02:05:50,427 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-03 02:05:50,427 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_rx_1msg [2022-11-03 02:05:50,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_rx_1msg [2022-11-03 02:05:50,427 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_disable [2022-11-03 02:05:50,427 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_disable [2022-11-03 02:05:50,428 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_1 [2022-11-03 02:05:50,428 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_1 [2022-11-03 02:05:50,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 02:05:50,429 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 02:05:50,429 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2022-11-03 02:05:50,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2022-11-03 02:05:50,429 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_eeprom_claim [2022-11-03 02:05:50,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_eeprom_claim [2022-11-03 02:05:50,430 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_soft_reset [2022-11-03 02:05:50,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_soft_reset [2022-11-03 02:05:50,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:05:50,434 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2022-11-03 02:05:50,434 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2022-11-03 02:05:50,434 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:05:50,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:05:50,437 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_rdreg [2022-11-03 02:05:50,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_rdreg [2022-11-03 02:05:50,437 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_set_value [2022-11-03 02:05:50,438 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_set_value [2022-11-03 02:05:50,444 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_rdreg8 [2022-11-03 02:05:50,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_rdreg8 [2022-11-03 02:05:50,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:05:50,445 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_rdreg16 [2022-11-03 02:05:50,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_rdreg16 [2022-11-03 02:05:50,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:05:50,446 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2022-11-03 02:05:50,446 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2022-11-03 02:05:50,446 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-03 02:05:50,446 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-03 02:05:50,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:05:50,447 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-11-03 02:05:50,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-11-03 02:05:50,447 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_init [2022-11-03 02:05:50,447 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_init [2022-11-03 02:05:50,447 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_2 [2022-11-03 02:05:50,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_2 [2022-11-03 02:05:50,448 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-03 02:05:50,448 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-03 02:05:50,448 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_net_ioctl [2022-11-03 02:05:50,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_net_ioctl [2022-11-03 02:05:50,448 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-03 02:05:50,449 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-03 02:05:50,449 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-03 02:05:50,449 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-03 02:05:50,449 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 02:05:50,449 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 02:05:50,450 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_write_mac_addr [2022-11-03 02:05:50,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_write_mac_addr [2022-11-03 02:05:50,450 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_wrreg16 [2022-11-03 02:05:50,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_wrreg16 [2022-11-03 02:05:50,450 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-03 02:05:50,451 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-03 02:05:50,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:05:50,451 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_suspend [2022-11-03 02:05:50,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_suspend [2022-11-03 02:05:50,451 INFO L130 BoogieDeclarations]: Found specification of procedure request_threaded_irq [2022-11-03 02:05:50,452 INFO L138 BoogieDeclarations]: Found implementation of procedure request_threaded_irq [2022-11-03 02:05:50,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:05:50,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:05:50,452 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-03 02:05:50,452 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-03 02:05:51,166 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:05:51,169 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:05:51,518 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 02:06:26,523 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:06:27,796 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:06:27,797 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-03 02:06:27,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:06:27 BoogieIcfgContainer [2022-11-03 02:06:27,804 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:06:27,808 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:06:27,808 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:06:27,812 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:06:27,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:05:46" (1/3) ... [2022-11-03 02:06:27,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e54777f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:06:27, skipping insertion in model container [2022-11-03 02:06:27,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:05:49" (2/3) ... [2022-11-03 02:06:27,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e54777f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:06:27, skipping insertion in model container [2022-11-03 02:06:27,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:06:27" (3/3) ... [2022-11-03 02:06:27,816 INFO L112 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--micrel--ks8851.ko-entry_point.cil.out.i [2022-11-03 02:06:27,836 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:06:27,836 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:06:27,941 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:06:27,948 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@681434ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:06:27,949 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:06:27,960 INFO L276 IsEmpty]: Start isEmpty. Operand has 876 states, 538 states have (on average 1.3847583643122676) internal successors, (745), 559 states have internal predecessors, (745), 267 states have call successors, (267), 72 states have call predecessors, (267), 71 states have return successors, (257), 256 states have call predecessors, (257), 257 states have call successors, (257) [2022-11-03 02:06:27,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-03 02:06:27,991 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:06:27,992 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:06:27,992 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:06:28,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:06:28,000 INFO L85 PathProgramCache]: Analyzing trace with hash -28590929, now seen corresponding path program 1 times [2022-11-03 02:06:28,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:06:28,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429813914] [2022-11-03 02:06:28,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:06:28,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:06:28,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:06:29,037 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-03 02:06:29,037 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:06:29,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429813914] [2022-11-03 02:06:29,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429813914] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:06:29,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:06:29,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:06:29,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454985836] [2022-11-03 02:06:29,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:06:29,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:06:29,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:06:29,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:06:29,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:06:29,097 INFO L87 Difference]: Start difference. First operand has 876 states, 538 states have (on average 1.3847583643122676) internal successors, (745), 559 states have internal predecessors, (745), 267 states have call successors, (267), 72 states have call predecessors, (267), 71 states have return successors, (257), 256 states have call predecessors, (257), 257 states have call successors, (257) Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-03 02:06:31,180 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:06:35,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:06:35,937 INFO L93 Difference]: Finished difference Result 2570 states and 3776 transitions. [2022-11-03 02:06:35,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:06:35,940 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 49 [2022-11-03 02:06:35,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:06:35,999 INFO L225 Difference]: With dead ends: 2570 [2022-11-03 02:06:36,001 INFO L226 Difference]: Without dead ends: 1683 [2022-11-03 02:06:36,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:06:36,014 INFO L413 NwaCegarLoop]: 1334 mSDtfsCounter, 1200 mSDsluCounter, 1241 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1200 SdHoareTripleChecker+Valid, 2411 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:06:36,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1200 Valid, 2411 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 344 Invalid, 1 Unknown, 0 Unchecked, 6.5s Time] [2022-11-03 02:06:36,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1683 states. [2022-11-03 02:06:36,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1683 to 1683. [2022-11-03 02:06:36,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1683 states, 1044 states have (on average 1.3601532567049808) internal successors, (1420), 1058 states have internal predecessors, (1420), 498 states have call successors, (498), 141 states have call predecessors, (498), 140 states have return successors, (497), 495 states have call predecessors, (497), 497 states have call successors, (497) [2022-11-03 02:06:36,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1683 states to 1683 states and 2415 transitions. [2022-11-03 02:06:36,272 INFO L78 Accepts]: Start accepts. Automaton has 1683 states and 2415 transitions. Word has length 49 [2022-11-03 02:06:36,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:06:36,274 INFO L495 AbstractCegarLoop]: Abstraction has 1683 states and 2415 transitions. [2022-11-03 02:06:36,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-03 02:06:36,274 INFO L276 IsEmpty]: Start isEmpty. Operand 1683 states and 2415 transitions. [2022-11-03 02:06:36,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-03 02:06:36,281 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:06:36,281 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:06:36,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:06:36,282 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:06:36,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:06:36,283 INFO L85 PathProgramCache]: Analyzing trace with hash -626262155, now seen corresponding path program 1 times [2022-11-03 02:06:36,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:06:36,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153695472] [2022-11-03 02:06:36,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:06:36,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:06:36,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:06:37,403 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-03 02:06:37,403 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:06:37,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153695472] [2022-11-03 02:06:37,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153695472] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:06:37,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:06:37,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:06:37,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946890147] [2022-11-03 02:06:37,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:06:37,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:06:37,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:06:37,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:06:37,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:06:37,406 INFO L87 Difference]: Start difference. First operand 1683 states and 2415 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-03 02:06:39,458 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:06:44,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:06:46,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:06:46,147 INFO L93 Difference]: Finished difference Result 3353 states and 4849 transitions. [2022-11-03 02:06:46,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:06:46,149 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 52 [2022-11-03 02:06:46,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:06:46,174 INFO L225 Difference]: With dead ends: 3353 [2022-11-03 02:06:46,175 INFO L226 Difference]: Without dead ends: 3348 [2022-11-03 02:06:46,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:06:46,179 INFO L413 NwaCegarLoop]: 1316 mSDtfsCounter, 1194 mSDsluCounter, 2718 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1194 SdHoareTripleChecker+Valid, 3708 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:06:46,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1194 Valid, 3708 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 520 Invalid, 1 Unknown, 0 Unchecked, 8.5s Time] [2022-11-03 02:06:46,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3348 states. [2022-11-03 02:06:46,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3348 to 3340. [2022-11-03 02:06:46,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3340 states, 2070 states have (on average 1.3608695652173912) internal successors, (2817), 2098 states have internal predecessors, (2817), 989 states have call successors, (989), 281 states have call predecessors, (989), 280 states have return successors, (1026), 984 states have call predecessors, (1026), 988 states have call successors, (1026) [2022-11-03 02:06:46,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3340 states to 3340 states and 4832 transitions. [2022-11-03 02:06:46,377 INFO L78 Accepts]: Start accepts. Automaton has 3340 states and 4832 transitions. Word has length 52 [2022-11-03 02:06:46,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:06:46,379 INFO L495 AbstractCegarLoop]: Abstraction has 3340 states and 4832 transitions. [2022-11-03 02:06:46,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-03 02:06:46,379 INFO L276 IsEmpty]: Start isEmpty. Operand 3340 states and 4832 transitions. [2022-11-03 02:06:46,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-11-03 02:06:46,404 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:06:46,405 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 5, 5, 5, 5, 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] [2022-11-03 02:06:46,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:06:46,406 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:06:46,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:06:46,413 INFO L85 PathProgramCache]: Analyzing trace with hash -789008051, now seen corresponding path program 1 times [2022-11-03 02:06:46,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:06:46,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616856797] [2022-11-03 02:06:46,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:06:46,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:06:46,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:06:47,132 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2022-11-03 02:06:47,132 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:06:47,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616856797] [2022-11-03 02:06:47,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616856797] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:06:47,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:06:47,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:06:47,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140888823] [2022-11-03 02:06:47,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:06:47,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:06:47,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:06:47,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:06:47,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:06:47,140 INFO L87 Difference]: Start difference. First operand 3340 states and 4832 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-03 02:06:49,201 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:06:54,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:06:54,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:06:54,638 INFO L93 Difference]: Finished difference Result 9394 states and 13544 transitions. [2022-11-03 02:06:54,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:06:54,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 198 [2022-11-03 02:06:54,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:06:54,679 INFO L225 Difference]: With dead ends: 9394 [2022-11-03 02:06:54,679 INFO L226 Difference]: Without dead ends: 6067 [2022-11-03 02:06:54,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:06:54,695 INFO L413 NwaCegarLoop]: 1276 mSDtfsCounter, 998 mSDsluCounter, 1146 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 998 SdHoareTripleChecker+Valid, 2265 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:06:54,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [998 Valid, 2265 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 383 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2022-11-03 02:06:54,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6067 states. [2022-11-03 02:06:54,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6067 to 6054. [2022-11-03 02:06:55,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6054 states, 3738 states have (on average 1.3558052434456929) internal successors, (5068), 3802 states have internal predecessors, (5068), 1787 states have call successors, (1787), 529 states have call predecessors, (1787), 528 states have return successors, (1860), 1770 states have call predecessors, (1860), 1786 states have call successors, (1860) [2022-11-03 02:06:55,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6054 states to 6054 states and 8715 transitions. [2022-11-03 02:06:55,027 INFO L78 Accepts]: Start accepts. Automaton has 6054 states and 8715 transitions. Word has length 198 [2022-11-03 02:06:55,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:06:55,030 INFO L495 AbstractCegarLoop]: Abstraction has 6054 states and 8715 transitions. [2022-11-03 02:06:55,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-03 02:06:55,031 INFO L276 IsEmpty]: Start isEmpty. Operand 6054 states and 8715 transitions. [2022-11-03 02:06:55,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-11-03 02:06:55,040 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:06:55,040 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 5, 5, 5, 5, 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] [2022-11-03 02:06:55,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:06:55,041 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:06:55,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:06:55,042 INFO L85 PathProgramCache]: Analyzing trace with hash -41537772, now seen corresponding path program 1 times [2022-11-03 02:06:55,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:06:55,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953745899] [2022-11-03 02:06:55,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:06:55,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:06:55,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:06:55,617 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2022-11-03 02:06:55,617 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:06:55,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953745899] [2022-11-03 02:06:55,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953745899] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:06:55,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:06:55,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:06:55,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684903044] [2022-11-03 02:06:55,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:06:55,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:06:55,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:06:55,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:06:55,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:06:55,622 INFO L87 Difference]: Start difference. First operand 6054 states and 8715 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-11-03 02:06:57,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:07:01,416 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:07:02,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:07:02,462 INFO L93 Difference]: Finished difference Result 17282 states and 24747 transitions. [2022-11-03 02:07:02,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:07:02,463 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 212 [2022-11-03 02:07:02,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:07:02,536 INFO L225 Difference]: With dead ends: 17282 [2022-11-03 02:07:02,536 INFO L226 Difference]: Without dead ends: 11241 [2022-11-03 02:07:02,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:07:02,567 INFO L413 NwaCegarLoop]: 1394 mSDtfsCounter, 1104 mSDsluCounter, 1192 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1104 SdHoareTripleChecker+Valid, 2442 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:07:02,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1104 Valid, 2442 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 368 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2022-11-03 02:07:02,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11241 states. [2022-11-03 02:07:03,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11241 to 11220. [2022-11-03 02:07:03,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11220 states, 6920 states have (on average 1.345664739884393) internal successors, (9312), 7040 states have internal predecessors, (9312), 3293 states have call successors, (3293), 1007 states have call predecessors, (3293), 1006 states have return successors, (3418), 3264 states have call predecessors, (3418), 3292 states have call successors, (3418) [2022-11-03 02:07:03,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11220 states to 11220 states and 16023 transitions. [2022-11-03 02:07:03,201 INFO L78 Accepts]: Start accepts. Automaton has 11220 states and 16023 transitions. Word has length 212 [2022-11-03 02:07:03,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:07:03,202 INFO L495 AbstractCegarLoop]: Abstraction has 11220 states and 16023 transitions. [2022-11-03 02:07:03,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-11-03 02:07:03,203 INFO L276 IsEmpty]: Start isEmpty. Operand 11220 states and 16023 transitions. [2022-11-03 02:07:03,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-11-03 02:07:03,227 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:07:03,227 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-03 02:07:03,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:07:03,228 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:07:03,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:03,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1877666476, now seen corresponding path program 1 times [2022-11-03 02:07:03,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:07:03,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385440602] [2022-11-03 02:07:03,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:03,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:07:03,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:04,487 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2022-11-03 02:07:04,487 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:07:04,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385440602] [2022-11-03 02:07:04,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385440602] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:07:04,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:07:04,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:07:04,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259220416] [2022-11-03 02:07:04,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:07:04,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:07:04,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:07:04,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:07:04,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:07:04,490 INFO L87 Difference]: Start difference. First operand 11220 states and 16023 transitions. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-03 02:07:06,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:07:12,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:07:12,336 INFO L93 Difference]: Finished difference Result 22507 states and 32203 transitions. [2022-11-03 02:07:12,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:07:12,337 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) Word has length 218 [2022-11-03 02:07:12,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:07:12,412 INFO L225 Difference]: With dead ends: 22507 [2022-11-03 02:07:12,412 INFO L226 Difference]: Without dead ends: 11300 [2022-11-03 02:07:12,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:07:12,468 INFO L413 NwaCegarLoop]: 1053 mSDtfsCounter, 1220 mSDsluCounter, 2408 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1227 SdHoareTripleChecker+Valid, 3131 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:07:12,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1227 Valid, 3131 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 547 Invalid, 1 Unknown, 0 Unchecked, 7.3s Time] [2022-11-03 02:07:12,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11300 states. [2022-11-03 02:07:13,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11300 to 11284. [2022-11-03 02:07:13,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11284 states, 6960 states have (on average 1.3436781609195403) internal successors, (9352), 7104 states have internal predecessors, (9352), 3293 states have call successors, (3293), 1007 states have call predecessors, (3293), 1030 states have return successors, (3482), 3264 states have call predecessors, (3482), 3292 states have call successors, (3482) [2022-11-03 02:07:13,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11284 states to 11284 states and 16127 transitions. [2022-11-03 02:07:13,225 INFO L78 Accepts]: Start accepts. Automaton has 11284 states and 16127 transitions. Word has length 218 [2022-11-03 02:07:13,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:07:13,227 INFO L495 AbstractCegarLoop]: Abstraction has 11284 states and 16127 transitions. [2022-11-03 02:07:13,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-03 02:07:13,227 INFO L276 IsEmpty]: Start isEmpty. Operand 11284 states and 16127 transitions. [2022-11-03 02:07:13,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-11-03 02:07:13,243 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:07:13,243 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-03 02:07:13,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:07:13,243 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:07:13,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:13,244 INFO L85 PathProgramCache]: Analyzing trace with hash 867691215, now seen corresponding path program 1 times [2022-11-03 02:07:13,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:07:13,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507705810] [2022-11-03 02:07:13,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:13,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:07:13,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:14,228 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2022-11-03 02:07:14,229 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:07:14,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507705810] [2022-11-03 02:07:14,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507705810] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:07:14,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:07:14,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:07:14,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488432418] [2022-11-03 02:07:14,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:07:14,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:07:14,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:07:14,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:07:14,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:07:14,231 INFO L87 Difference]: Start difference. First operand 11284 states and 16127 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-03 02:07:16,294 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:07:24,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:07:24,751 INFO L93 Difference]: Finished difference Result 33970 states and 48695 transitions. [2022-11-03 02:07:24,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:07:24,755 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) Word has length 213 [2022-11-03 02:07:24,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:07:24,881 INFO L225 Difference]: With dead ends: 33970 [2022-11-03 02:07:24,882 INFO L226 Difference]: Without dead ends: 22699 [2022-11-03 02:07:24,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:07:24,939 INFO L413 NwaCegarLoop]: 1297 mSDtfsCounter, 1238 mSDsluCounter, 4086 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1245 SdHoareTripleChecker+Valid, 4895 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:07:24,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1245 Valid, 4895 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 771 Invalid, 1 Unknown, 0 Unchecked, 9.7s Time] [2022-11-03 02:07:24,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22699 states. [2022-11-03 02:07:26,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22699 to 22518. [2022-11-03 02:07:26,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22518 states, 13878 states have (on average 1.3447182591151463) internal successors, (18662), 14246 states have internal predecessors, (18662), 6563 states have call successors, (6563), 1997 states have call predecessors, (6563), 2076 states have return successors, (7038), 6442 states have call predecessors, (7038), 6562 states have call successors, (7038) [2022-11-03 02:07:26,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22518 states to 22518 states and 32263 transitions. [2022-11-03 02:07:26,576 INFO L78 Accepts]: Start accepts. Automaton has 22518 states and 32263 transitions. Word has length 213 [2022-11-03 02:07:26,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:07:26,578 INFO L495 AbstractCegarLoop]: Abstraction has 22518 states and 32263 transitions. [2022-11-03 02:07:26,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-03 02:07:26,578 INFO L276 IsEmpty]: Start isEmpty. Operand 22518 states and 32263 transitions. [2022-11-03 02:07:26,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-11-03 02:07:26,614 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:07:26,614 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-03 02:07:26,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:07:26,615 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:07:26,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:26,615 INFO L85 PathProgramCache]: Analyzing trace with hash 2031515004, now seen corresponding path program 1 times [2022-11-03 02:07:26,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:07:26,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951744705] [2022-11-03 02:07:26,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:26,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:07:26,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:27,630 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2022-11-03 02:07:27,630 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:07:27,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951744705] [2022-11-03 02:07:27,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951744705] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:07:27,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:07:27,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:07:27,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979205195] [2022-11-03 02:07:27,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:07:27,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:07:27,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:07:27,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:07:27,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:07:27,633 INFO L87 Difference]: Start difference. First operand 22518 states and 32263 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-03 02:07:29,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:07:33,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:07:35,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:07:35,936 INFO L93 Difference]: Finished difference Result 45055 states and 64571 transitions. [2022-11-03 02:07:35,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:07:35,937 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) Word has length 219 [2022-11-03 02:07:35,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:07:36,243 INFO L225 Difference]: With dead ends: 45055 [2022-11-03 02:07:36,243 INFO L226 Difference]: Without dead ends: 22550 [2022-11-03 02:07:36,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:07:36,308 INFO L413 NwaCegarLoop]: 1053 mSDtfsCounter, 1219 mSDsluCounter, 2408 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1225 SdHoareTripleChecker+Valid, 3131 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:07:36,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1225 Valid, 3131 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 541 Invalid, 1 Unknown, 0 Unchecked, 7.3s Time] [2022-11-03 02:07:36,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22550 states. [2022-11-03 02:07:37,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22550 to 22518. [2022-11-03 02:07:37,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22518 states, 13878 states have (on average 1.3447182591151463) internal successors, (18662), 14246 states have internal predecessors, (18662), 6563 states have call successors, (6563), 1997 states have call predecessors, (6563), 2076 states have return successors, (6974), 6442 states have call predecessors, (6974), 6562 states have call successors, (6974) [2022-11-03 02:07:37,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22518 states to 22518 states and 32199 transitions. [2022-11-03 02:07:37,718 INFO L78 Accepts]: Start accepts. Automaton has 22518 states and 32199 transitions. Word has length 219 [2022-11-03 02:07:37,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:07:37,719 INFO L495 AbstractCegarLoop]: Abstraction has 22518 states and 32199 transitions. [2022-11-03 02:07:37,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-03 02:07:37,719 INFO L276 IsEmpty]: Start isEmpty. Operand 22518 states and 32199 transitions. [2022-11-03 02:07:37,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-11-03 02:07:37,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:07:37,745 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-03 02:07:37,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:07:37,745 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:07:37,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:37,746 INFO L85 PathProgramCache]: Analyzing trace with hash -819920170, now seen corresponding path program 1 times [2022-11-03 02:07:37,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:07:37,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305851966] [2022-11-03 02:07:37,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:37,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:07:37,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:38,636 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2022-11-03 02:07:38,636 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:07:38,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305851966] [2022-11-03 02:07:38,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305851966] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:07:38,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:07:38,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:07:38,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152671881] [2022-11-03 02:07:38,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:07:38,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:07:38,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:07:38,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:07:38,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:07:38,639 INFO L87 Difference]: Start difference. First operand 22518 states and 32199 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-03 02:07:40,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:07:49,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:07:49,677 INFO L93 Difference]: Finished difference Result 45220 states and 64735 transitions. [2022-11-03 02:07:49,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:07:49,678 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) Word has length 214 [2022-11-03 02:07:49,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:07:49,854 INFO L225 Difference]: With dead ends: 45220 [2022-11-03 02:07:49,854 INFO L226 Difference]: Without dead ends: 33933 [2022-11-03 02:07:49,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:07:49,905 INFO L413 NwaCegarLoop]: 1301 mSDtfsCounter, 1241 mSDsluCounter, 4098 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1248 SdHoareTripleChecker+Valid, 4911 SdHoareTripleChecker+Invalid, 775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:07:49,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1248 Valid, 4911 Invalid, 775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 767 Invalid, 1 Unknown, 0 Unchecked, 9.4s Time] [2022-11-03 02:07:49,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33933 states. [2022-11-03 02:07:51,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33933 to 33800. [2022-11-03 02:07:51,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33800 states, 20852 states have (on average 1.344139650872818) internal successors, (28028), 21372 states have internal predecessors, (28028), 9833 states have call successors, (9833), 2987 states have call predecessors, (9833), 3114 states have return successors, (10434), 9684 states have call predecessors, (10434), 9832 states have call successors, (10434) [2022-11-03 02:07:51,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33800 states to 33800 states and 48295 transitions. [2022-11-03 02:07:51,982 INFO L78 Accepts]: Start accepts. Automaton has 33800 states and 48295 transitions. Word has length 214 [2022-11-03 02:07:51,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:07:51,988 INFO L495 AbstractCegarLoop]: Abstraction has 33800 states and 48295 transitions. [2022-11-03 02:07:51,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-03 02:07:51,989 INFO L276 IsEmpty]: Start isEmpty. Operand 33800 states and 48295 transitions. [2022-11-03 02:07:52,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-11-03 02:07:52,023 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:07:52,024 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-03 02:07:52,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 02:07:52,024 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:07:52,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:52,025 INFO L85 PathProgramCache]: Analyzing trace with hash -362794084, now seen corresponding path program 1 times [2022-11-03 02:07:52,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:07:52,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438987448] [2022-11-03 02:07:52,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:52,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:07:52,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:53,126 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2022-11-03 02:07:53,126 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:07:53,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438987448] [2022-11-03 02:07:53,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438987448] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:07:53,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:07:53,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:07:53,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34742874] [2022-11-03 02:07:53,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:07:53,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:07:53,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:07:53,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:07:53,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:07:53,129 INFO L87 Difference]: Start difference. First operand 33800 states and 48295 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-03 02:07:55,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:07:59,377 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:08:03,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:08:03,639 INFO L93 Difference]: Finished difference Result 56502 states and 80783 transitions. [2022-11-03 02:08:03,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:08:03,640 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) Word has length 215 [2022-11-03 02:08:03,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:08:03,821 INFO L225 Difference]: With dead ends: 56502 [2022-11-03 02:08:03,821 INFO L226 Difference]: Without dead ends: 33933 [2022-11-03 02:08:03,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:08:03,905 INFO L413 NwaCegarLoop]: 1301 mSDtfsCounter, 1240 mSDsluCounter, 4098 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1246 SdHoareTripleChecker+Valid, 4911 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:08:03,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1246 Valid, 4911 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 761 Invalid, 1 Unknown, 0 Unchecked, 8.8s Time] [2022-11-03 02:08:03,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33933 states. [2022-11-03 02:08:05,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33933 to 33800. [2022-11-03 02:08:05,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33800 states, 20852 states have (on average 1.344139650872818) internal successors, (28028), 21372 states have internal predecessors, (28028), 9833 states have call successors, (9833), 2987 states have call predecessors, (9833), 3114 states have return successors, (10370), 9684 states have call predecessors, (10370), 9832 states have call successors, (10370) [2022-11-03 02:08:06,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33800 states to 33800 states and 48231 transitions. [2022-11-03 02:08:06,208 INFO L78 Accepts]: Start accepts. Automaton has 33800 states and 48231 transitions. Word has length 215 [2022-11-03 02:08:06,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:08:06,208 INFO L495 AbstractCegarLoop]: Abstraction has 33800 states and 48231 transitions. [2022-11-03 02:08:06,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-03 02:08:06,209 INFO L276 IsEmpty]: Start isEmpty. Operand 33800 states and 48231 transitions. [2022-11-03 02:08:06,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-11-03 02:08:06,235 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:08:06,235 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-03 02:08:06,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 02:08:06,236 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:08:06,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:08:06,236 INFO L85 PathProgramCache]: Analyzing trace with hash -2138283133, now seen corresponding path program 1 times [2022-11-03 02:08:06,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:08:06,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113261963] [2022-11-03 02:08:06,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:08:06,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:08:06,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:08:07,113 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2022-11-03 02:08:07,113 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:08:07,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113261963] [2022-11-03 02:08:07,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113261963] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:08:07,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:08:07,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:08:07,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492400235] [2022-11-03 02:08:07,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:08:07,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:08:07,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:08:07,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:08:07,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:08:07,115 INFO L87 Difference]: Start difference. First operand 33800 states and 48231 transitions. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-03 02:08:09,168 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:08:18,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:08:18,038 INFO L93 Difference]: Finished difference Result 56502 states and 80671 transitions. [2022-11-03 02:08:18,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:08:18,039 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) Word has length 216 [2022-11-03 02:08:18,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:08:18,193 INFO L225 Difference]: With dead ends: 56502 [2022-11-03 02:08:18,194 INFO L226 Difference]: Without dead ends: 33725 [2022-11-03 02:08:18,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:08:18,270 INFO L413 NwaCegarLoop]: 1301 mSDtfsCounter, 1239 mSDsluCounter, 4098 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1244 SdHoareTripleChecker+Valid, 4911 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:08:18,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1244 Valid, 4911 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 755 Invalid, 1 Unknown, 0 Unchecked, 9.3s Time] [2022-11-03 02:08:18,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33725 states. [2022-11-03 02:08:20,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33725 to 33608. [2022-11-03 02:08:20,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33608 states, 20700 states have (on average 1.3428019323671498) internal successors, (27796), 21196 states have internal predecessors, (27796), 9817 states have call successors, (9817), 2987 states have call predecessors, (9817), 3090 states have return successors, (10282), 9668 states have call predecessors, (10282), 9816 states have call successors, (10282) [2022-11-03 02:08:20,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33608 states to 33608 states and 47895 transitions. [2022-11-03 02:08:20,513 INFO L78 Accepts]: Start accepts. Automaton has 33608 states and 47895 transitions. Word has length 216 [2022-11-03 02:08:20,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:08:20,514 INFO L495 AbstractCegarLoop]: Abstraction has 33608 states and 47895 transitions. [2022-11-03 02:08:20,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-03 02:08:20,514 INFO L276 IsEmpty]: Start isEmpty. Operand 33608 states and 47895 transitions. [2022-11-03 02:08:20,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-11-03 02:08:20,528 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:08:20,529 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-03 02:08:20,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 02:08:20,529 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:08:20,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:08:20,530 INFO L85 PathProgramCache]: Analyzing trace with hash -717053713, now seen corresponding path program 1 times [2022-11-03 02:08:20,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:08:20,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509488499] [2022-11-03 02:08:20,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:08:20,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:08:20,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:08:21,744 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2022-11-03 02:08:21,744 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:08:21,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509488499] [2022-11-03 02:08:21,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509488499] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:08:21,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:08:21,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:08:21,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601884564] [2022-11-03 02:08:21,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:08:21,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:08:21,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:08:21,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:08:21,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:08:21,746 INFO L87 Difference]: Start difference. First operand 33608 states and 47895 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-03 02:08:23,801 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:08:28,596 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:08:31,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:08:31,880 INFO L93 Difference]: Finished difference Result 67251 states and 95843 transitions. [2022-11-03 02:08:31,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:08:31,881 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) Word has length 217 [2022-11-03 02:08:31,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:08:31,992 INFO L225 Difference]: With dead ends: 67251 [2022-11-03 02:08:31,992 INFO L226 Difference]: Without dead ends: 33656 [2022-11-03 02:08:32,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:08:32,080 INFO L413 NwaCegarLoop]: 1053 mSDtfsCounter, 1221 mSDsluCounter, 2408 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1226 SdHoareTripleChecker+Valid, 3131 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:08:32,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1226 Valid, 3131 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 535 Invalid, 1 Unknown, 0 Unchecked, 8.3s Time] [2022-11-03 02:08:32,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33656 states. [2022-11-03 02:08:33,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33656 to 33608. [2022-11-03 02:08:33,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33608 states, 20700 states have (on average 1.3428019323671498) internal successors, (27796), 21196 states have internal predecessors, (27796), 9817 states have call successors, (9817), 2987 states have call predecessors, (9817), 3090 states have return successors, (10186), 9668 states have call predecessors, (10186), 9816 states have call successors, (10186) [2022-11-03 02:08:34,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33608 states to 33608 states and 47799 transitions. [2022-11-03 02:08:34,104 INFO L78 Accepts]: Start accepts. Automaton has 33608 states and 47799 transitions. Word has length 217 [2022-11-03 02:08:34,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:08:34,105 INFO L495 AbstractCegarLoop]: Abstraction has 33608 states and 47799 transitions. [2022-11-03 02:08:34,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-03 02:08:34,106 INFO L276 IsEmpty]: Start isEmpty. Operand 33608 states and 47799 transitions. [2022-11-03 02:08:34,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-11-03 02:08:34,117 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:08:34,118 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-03 02:08:34,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 02:08:34,118 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:08:34,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:08:34,118 INFO L85 PathProgramCache]: Analyzing trace with hash -224183193, now seen corresponding path program 1 times [2022-11-03 02:08:34,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:08:34,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234201301] [2022-11-03 02:08:34,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:08:34,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:08:34,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:08:34,978 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2022-11-03 02:08:34,978 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:08:34,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234201301] [2022-11-03 02:08:34,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234201301] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:08:34,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:08:34,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:08:34,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384353572] [2022-11-03 02:08:34,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:08:34,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:08:34,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:08:34,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:08:34,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:08:34,980 INFO L87 Difference]: Start difference. First operand 33608 states and 47799 transitions. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-03 02:08:37,034 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:08:44,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:08:48,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:08:48,907 INFO L93 Difference]: Finished difference Result 100894 states and 143455 transitions. [2022-11-03 02:08:48,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:08:48,907 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) Word has length 216 [2022-11-03 02:08:48,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:08:49,142 INFO L225 Difference]: With dead ends: 100894 [2022-11-03 02:08:49,142 INFO L226 Difference]: Without dead ends: 65233 [2022-11-03 02:08:49,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:08:49,391 INFO L413 NwaCegarLoop]: 1297 mSDtfsCounter, 1238 mSDsluCounter, 4091 mSDsCounter, 0 mSdLazyCounter, 729 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1242 SdHoareTripleChecker+Valid, 4894 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 729 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:08:49,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1242 Valid, 4894 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 729 Invalid, 1 Unknown, 0 Unchecked, 10.5s Time] [2022-11-03 02:08:49,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65233 states. [2022-11-03 02:08:53,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65233 to 64988. [2022-11-03 02:08:53,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64988 states, 39840 states have (on average 1.3434236947791165) internal successors, (53522), 40936 states have internal predecessors, (53522), 19067 states have call successors, (19067), 5945 states have call predecessors, (19067), 6080 states have return successors, (19678), 18578 states have call predecessors, (19678), 19066 states have call successors, (19678) [2022-11-03 02:08:53,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64988 states to 64988 states and 92267 transitions. [2022-11-03 02:08:53,732 INFO L78 Accepts]: Start accepts. Automaton has 64988 states and 92267 transitions. Word has length 216 [2022-11-03 02:08:53,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:08:53,732 INFO L495 AbstractCegarLoop]: Abstraction has 64988 states and 92267 transitions. [2022-11-03 02:08:53,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-03 02:08:53,733 INFO L276 IsEmpty]: Start isEmpty. Operand 64988 states and 92267 transitions. [2022-11-03 02:08:53,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2022-11-03 02:08:53,763 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:08:53,764 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 5, 5, 5, 5, 3, 3, 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] [2022-11-03 02:08:53,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 02:08:53,764 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:08:53,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:08:53,765 INFO L85 PathProgramCache]: Analyzing trace with hash -131838419, now seen corresponding path program 1 times [2022-11-03 02:08:53,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:08:53,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924781566] [2022-11-03 02:08:53,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:08:53,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:08:53,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:08:54,359 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2022-11-03 02:08:54,360 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:08:54,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924781566] [2022-11-03 02:08:54,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924781566] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:08:54,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:08:54,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:08:54,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404707507] [2022-11-03 02:08:54,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:08:54,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:08:54,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:08:54,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:08:54,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:08:54,363 INFO L87 Difference]: Start difference. First operand 64988 states and 92267 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2022-11-03 02:08:56,405 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:09:03,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []