./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--ali-ircc.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb80d760-74b7-450e-887b-3f599b00e458/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb80d760-74b7-450e-887b-3f599b00e458/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_fb80d760-74b7-450e-887b-3f599b00e458/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb80d760-74b7-450e-887b-3f599b00e458/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--ali-ircc.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb80d760-74b7-450e-887b-3f599b00e458/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_fb80d760-74b7-450e-887b-3f599b00e458/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 c454dc64a3cc485840c6830ce9e1c132fc674b92d2da550d28087d832958d75f --- 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 03:29:43,811 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:29:43,813 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:29:43,838 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:29:43,839 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:29:43,840 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:29:43,841 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:29:43,843 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:29:43,845 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:29:43,846 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:29:43,847 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:29:43,848 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:29:43,848 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:29:43,849 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:29:43,850 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:29:43,851 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:29:43,852 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:29:43,853 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:29:43,855 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:29:43,857 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:29:43,858 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:29:43,859 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:29:43,861 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:29:43,861 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:29:43,865 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:29:43,865 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:29:43,866 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:29:43,867 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:29:43,867 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:29:43,868 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:29:43,869 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:29:43,870 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:29:43,871 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:29:43,871 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:29:43,879 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:29:43,880 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:29:43,881 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:29:43,881 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:29:43,881 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:29:43,882 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:29:43,883 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:29:43,889 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb80d760-74b7-450e-887b-3f599b00e458/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 03:29:43,919 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:29:43,919 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:29:43,919 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:29:43,919 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:29:43,920 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:29:43,920 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:29:43,921 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:29:43,921 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:29:43,921 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:29:43,921 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:29:43,922 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:29:43,922 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:29:43,922 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:29:43,922 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:29:43,923 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:29:43,923 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:29:43,923 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:29:43,923 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:29:43,924 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:29:43,924 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:29:43,925 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:29:43,925 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:29:43,925 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:29:43,925 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:29:43,926 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:29:43,926 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:29:43,926 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:29:43,926 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:29:43,927 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:29:43,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:29:43,927 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:29:43,927 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:29:43,928 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:29:43,928 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:29:43,928 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:29:43,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:29:43,929 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:29:43,929 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:29:43,929 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_fb80d760-74b7-450e-887b-3f599b00e458/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb80d760-74b7-450e-887b-3f599b00e458/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c454dc64a3cc485840c6830ce9e1c132fc674b92d2da550d28087d832958d75f [2022-11-03 03:29:44,190 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:29:44,222 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:29:44,225 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:29:44,227 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:29:44,233 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:29:44,234 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb80d760-74b7-450e-887b-3f599b00e458/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--ali-ircc.ko-entry_point.cil.out.i [2022-11-03 03:29:44,321 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb80d760-74b7-450e-887b-3f599b00e458/bin/utaipan-7li7fVZpFI/data/90c76b733/b06872e0efd14b51b3a7c1626d29006a/FLAGb88f3f097 [2022-11-03 03:29:45,258 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:29:45,260 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb80d760-74b7-450e-887b-3f599b00e458/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--ali-ircc.ko-entry_point.cil.out.i [2022-11-03 03:29:45,332 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb80d760-74b7-450e-887b-3f599b00e458/bin/utaipan-7li7fVZpFI/data/90c76b733/b06872e0efd14b51b3a7c1626d29006a/FLAGb88f3f097 [2022-11-03 03:29:45,720 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb80d760-74b7-450e-887b-3f599b00e458/bin/utaipan-7li7fVZpFI/data/90c76b733/b06872e0efd14b51b3a7c1626d29006a [2022-11-03 03:29:45,723 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:29:45,725 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:29:45,730 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:29:45,730 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:29:45,734 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:29:45,754 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:29:45" (1/1) ... [2022-11-03 03:29:45,755 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5479feca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:29:45, skipping insertion in model container [2022-11-03 03:29:45,756 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:29:45" (1/1) ... [2022-11-03 03:29:45,763 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:29:45,918 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:29:47,711 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_fb80d760-74b7-450e-887b-3f599b00e458/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--ali-ircc.ko-entry_point.cil.out.i[301264,301277] [2022-11-03 03:29:47,753 WARN L611 FunctionHandler]: implicit declaration of function ldv_xmalloc [2022-11-03 03:29:47,766 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:29:47,807 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:29:48,208 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_fb80d760-74b7-450e-887b-3f599b00e458/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--ali-ircc.ko-entry_point.cil.out.i[301264,301277] [2022-11-03 03:29:48,212 WARN L611 FunctionHandler]: implicit declaration of function ldv_xmalloc [2022-11-03 03:29:48,217 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:29:48,359 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:29:48,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:29:48 WrapperNode [2022-11-03 03:29:48,359 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:29:48,361 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:29:48,361 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:29:48,361 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:29:48,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:29:48" (1/1) ... [2022-11-03 03:29:48,474 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:29:48" (1/1) ... [2022-11-03 03:29:48,645 INFO L138 Inliner]: procedures = 221, calls = 2343, calls flagged for inlining = 115, calls inlined = 111, statements flattened = 4740 [2022-11-03 03:29:48,646 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:29:48,647 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:29:48,647 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:29:48,647 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:29:48,656 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:29:48" (1/1) ... [2022-11-03 03:29:48,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:29:48" (1/1) ... [2022-11-03 03:29:48,679 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:29:48" (1/1) ... [2022-11-03 03:29:48,679 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:29:48" (1/1) ... [2022-11-03 03:29:48,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:29:48" (1/1) ... [2022-11-03 03:29:48,854 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:29:48" (1/1) ... [2022-11-03 03:29:48,883 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:29:48" (1/1) ... [2022-11-03 03:29:48,900 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:29:48" (1/1) ... [2022-11-03 03:29:48,934 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:29:48,936 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:29:48,936 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:29:48,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:29:48,937 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:29:48" (1/1) ... [2022-11-03 03:29:48,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:29:48,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb80d760-74b7-450e-887b-3f599b00e458/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:29:48,970 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb80d760-74b7-450e-887b-3f599b00e458/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:29:49,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb80d760-74b7-450e-887b-3f599b00e458/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:29:49,086 INFO L130 BoogieDeclarations]: Found specification of procedure platform_driver_unregister [2022-11-03 03:29:49,087 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_driver_unregister [2022-11-03 03:29:49,087 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 03:29:49,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 03:29:49,087 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 03:29:49,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 03:29:49,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 03:29:49,088 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 03:29:49,088 INFO L130 BoogieDeclarations]: Found specification of procedure irda_setup_dma [2022-11-03 03:29:49,089 INFO L138 BoogieDeclarations]: Found implementation of procedure irda_setup_dma [2022-11-03 03:29:49,090 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-03 03:29:49,090 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-03 03:29:49,090 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-11-03 03:29:49,091 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-11-03 03:29:49,091 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-03 03:29:49,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-03 03:29:49,091 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_dma_receive_complete [2022-11-03 03:29:49,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_dma_receive_complete [2022-11-03 03:29:49,092 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 03:29:49,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 03:29:49,092 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-03 03:29:49,092 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-03 03:29:49,092 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 03:29:49,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 03:29:49,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 03:29:49,093 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 03:29:49,093 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 03:29:49,093 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 03:29:49,094 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-03 03:29:49,094 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-03 03:29:49,094 INFO L130 BoogieDeclarations]: Found specification of procedure ktime_get [2022-11-03 03:29:49,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ktime_get [2022-11-03 03:29:49,095 INFO L130 BoogieDeclarations]: Found specification of procedure switch_bank [2022-11-03 03:29:49,095 INFO L138 BoogieDeclarations]: Found implementation of procedure switch_bank [2022-11-03 03:29:49,095 INFO L130 BoogieDeclarations]: Found specification of procedure dma_zalloc_coherent [2022-11-03 03:29:49,096 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_zalloc_coherent [2022-11-03 03:29:49,096 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-03 03:29:49,096 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-03 03:29:49,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 03:29:49,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 03:29:49,097 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-03 03:29:49,097 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-11-03 03:29:49,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-11-03 03:29:49,097 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_remove_4 [2022-11-03 03:29:49,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_remove_4 [2022-11-03 03:29:49,098 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-03 03:29:49,099 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-03 03:29:49,100 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_dma_receive [2022-11-03 03:29:49,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_dma_receive [2022-11-03 03:29:49,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:29:49,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 03:29:49,101 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-11-03 03:29:49,101 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-11-03 03:29:49,101 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_net_ioctl [2022-11-03 03:29:49,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_net_ioctl [2022-11-03 03:29:49,102 INFO L130 BoogieDeclarations]: Found specification of procedure SetCOMInterrupts [2022-11-03 03:29:49,102 INFO L138 BoogieDeclarations]: Found implementation of procedure SetCOMInterrupts [2022-11-03 03:29:49,103 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-03 03:29:49,103 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-03 03:29:49,103 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-11-03 03:29:49,103 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-11-03 03:29:49,104 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-03 03:29:49,104 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-03 03:29:49,104 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_change_dongle_speed [2022-11-03 03:29:49,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_change_dongle_speed [2022-11-03 03:29:49,104 INFO L130 BoogieDeclarations]: Found specification of procedure SIR2FIR [2022-11-03 03:29:49,104 INFO L138 BoogieDeclarations]: Found implementation of procedure SIR2FIR [2022-11-03 03:29:49,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 03:29:49,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 03:29:49,106 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_net_close [2022-11-03 03:29:49,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_net_close [2022-11-03 03:29:49,106 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-11-03 03:29:49,106 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-11-03 03:29:49,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 03:29:49,107 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-03 03:29:49,107 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-03 03:29:49,107 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_dma_xmit [2022-11-03 03:29:49,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_dma_xmit [2022-11-03 03:29:49,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 03:29:49,107 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 03:29:49,108 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2022-11-03 03:29:49,108 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2022-11-03 03:29:49,109 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-03 03:29:49,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-03 03:29:49,109 INFO L130 BoogieDeclarations]: Found specification of procedure irda_get_next_speed [2022-11-03 03:29:49,109 INFO L138 BoogieDeclarations]: Found implementation of procedure irda_get_next_speed [2022-11-03 03:29:49,110 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_net_open [2022-11-03 03:29:49,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_net_open [2022-11-03 03:29:49,110 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2022-11-03 03:29:49,111 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2022-11-03 03:29:49,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 03:29:49,112 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2022-11-03 03:29:49,112 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2022-11-03 03:29:49,112 INFO L130 BoogieDeclarations]: Found specification of procedure net_ratelimit [2022-11-03 03:29:49,112 INFO L138 BoogieDeclarations]: Found implementation of procedure net_ratelimit [2022-11-03 03:29:49,113 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 03:29:49,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 03:29:49,113 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-03 03:29:49,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-03 03:29:49,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 03:29:49,114 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-03 03:29:49,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-03 03:29:49,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:29:49,115 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-03 03:29:49,115 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-03 03:29:49,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 03:29:49,115 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2022-11-03 03:29:49,116 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2022-11-03 03:29:49,116 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-03 03:29:49,119 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-11-03 03:29:49,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-11-03 03:29:49,119 INFO L130 BoogieDeclarations]: Found specification of procedure FIR2SIR [2022-11-03 03:29:49,120 INFO L138 BoogieDeclarations]: Found implementation of procedure FIR2SIR [2022-11-03 03:29:49,121 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_drvdata [2022-11-03 03:29:49,121 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_drvdata [2022-11-03 03:29:49,122 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_change_speed [2022-11-03 03:29:49,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_change_speed [2022-11-03 03:29:49,122 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-03 03:29:49,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-03 03:29:49,128 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-11-03 03:29:49,128 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-11-03 03:29:49,128 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_unlock [2022-11-03 03:29:49,129 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_unlock [2022-11-03 03:29:49,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:29:49,129 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_resume [2022-11-03 03:29:49,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_resume [2022-11-03 03:29:49,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:29:49,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:29:49,839 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:29:49,843 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:29:51,128 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 03:29:56,810 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:29:57,822 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:29:57,822 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 03:29:57,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:29:57 BoogieIcfgContainer [2022-11-03 03:29:57,828 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:29:57,832 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:29:57,832 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:29:57,836 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:29:57,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:29:45" (1/3) ... [2022-11-03 03:29:57,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31cc42d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:29:57, skipping insertion in model container [2022-11-03 03:29:57,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:29:48" (2/3) ... [2022-11-03 03:29:57,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31cc42d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:29:57, skipping insertion in model container [2022-11-03 03:29:57,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:29:57" (3/3) ... [2022-11-03 03:29:57,840 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--ali-ircc.ko-entry_point.cil.out.i [2022-11-03 03:29:57,859 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:29:57,859 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:29:57,958 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:29:57,968 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;@58561f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:29:57,968 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:29:57,978 INFO L276 IsEmpty]: Start isEmpty. Operand has 1064 states, 597 states have (on average 1.3249581239530988) internal successors, (791), 625 states have internal predecessors, (791), 411 states have call successors, (411), 55 states have call predecessors, (411), 54 states have return successors, (404), 395 states have call predecessors, (404), 404 states have call successors, (404) [2022-11-03 03:29:58,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-11-03 03:29:58,028 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:29:58,029 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-03 03:29:58,032 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:29:58,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:29:58,036 INFO L85 PathProgramCache]: Analyzing trace with hash 613381735, now seen corresponding path program 1 times [2022-11-03 03:29:58,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:29:58,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237540099] [2022-11-03 03:29:58,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:29:58,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:29:58,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:29:59,505 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-03 03:29:59,506 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:29:59,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237540099] [2022-11-03 03:29:59,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237540099] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:29:59,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:29:59,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:29:59,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490376331] [2022-11-03 03:29:59,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:29:59,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:29:59,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:29:59,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:29:59,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:29:59,556 INFO L87 Difference]: Start difference. First operand has 1064 states, 597 states have (on average 1.3249581239530988) internal successors, (791), 625 states have internal predecessors, (791), 411 states have call successors, (411), 55 states have call predecessors, (411), 54 states have return successors, (404), 395 states have call predecessors, (404), 404 states have call successors, (404) Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-03 03:30:01,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:30:03,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:30:09,433 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:30:12,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:30:12,426 INFO L93 Difference]: Finished difference Result 3148 states and 4782 transitions. [2022-11-03 03:30:12,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:30:12,428 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 177 [2022-11-03 03:30:12,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:30:12,461 INFO L225 Difference]: With dead ends: 3148 [2022-11-03 03:30:12,461 INFO L226 Difference]: Without dead ends: 2041 [2022-11-03 03:30:12,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:30:12,476 INFO L413 NwaCegarLoop]: 1991 mSDtfsCounter, 1570 mSDsluCounter, 6008 mSDsCounter, 0 mSdLazyCounter, 897 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1574 SdHoareTripleChecker+Valid, 7360 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 897 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:30:12,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1574 Valid, 7360 Invalid, 902 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 897 Invalid, 2 Unknown, 0 Unchecked, 12.5s Time] [2022-11-03 03:30:12,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2041 states. [2022-11-03 03:30:12,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2041 to 2028. [2022-11-03 03:30:12,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2028 states, 1141 states have (on average 1.3120070113935145) internal successors, (1497), 1183 states have internal predecessors, (1497), 780 states have call successors, (780), 107 states have call predecessors, (780), 106 states have return successors, (783), 757 states have call predecessors, (783), 779 states have call successors, (783) [2022-11-03 03:30:12,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2028 states to 2028 states and 3060 transitions. [2022-11-03 03:30:12,830 INFO L78 Accepts]: Start accepts. Automaton has 2028 states and 3060 transitions. Word has length 177 [2022-11-03 03:30:12,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:30:12,832 INFO L495 AbstractCegarLoop]: Abstraction has 2028 states and 3060 transitions. [2022-11-03 03:30:12,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-03 03:30:12,833 INFO L276 IsEmpty]: Start isEmpty. Operand 2028 states and 3060 transitions. [2022-11-03 03:30:12,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-11-03 03:30:12,857 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:30:12,857 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-03 03:30:12,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:30:12,858 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:30:12,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:30:12,859 INFO L85 PathProgramCache]: Analyzing trace with hash -28259070, now seen corresponding path program 1 times [2022-11-03 03:30:12,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:30:12,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119944377] [2022-11-03 03:30:12,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:30:12,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:30:13,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:30:13,746 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-03 03:30:13,747 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:30:13,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119944377] [2022-11-03 03:30:13,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119944377] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:30:13,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:30:13,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:30:13,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568777275] [2022-11-03 03:30:13,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:30:13,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:30:13,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:30:13,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:30:13,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:30:13,751 INFO L87 Difference]: Start difference. First operand 2028 states and 3060 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 3 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-03 03:30:16,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:30:22,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:30:25,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:30:25,625 INFO L93 Difference]: Finished difference Result 4567 states and 6884 transitions. [2022-11-03 03:30:25,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:30:25,626 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 3 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 180 [2022-11-03 03:30:25,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:30:25,648 INFO L225 Difference]: With dead ends: 4567 [2022-11-03 03:30:25,648 INFO L226 Difference]: Without dead ends: 3045 [2022-11-03 03:30:25,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:30:25,659 INFO L413 NwaCegarLoop]: 1760 mSDtfsCounter, 1514 mSDsluCounter, 5398 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1518 SdHoareTripleChecker+Valid, 6621 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:30:25,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1518 Valid, 6621 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 744 Invalid, 2 Unknown, 0 Unchecked, 11.6s Time] [2022-11-03 03:30:25,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3045 states. [2022-11-03 03:30:25,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3045 to 3027. [2022-11-03 03:30:25,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3027 states, 1706 states have (on average 1.3124267291910903) internal successors, (2239), 1766 states have internal predecessors, (2239), 1161 states have call successors, (1161), 160 states have call predecessors, (1161), 159 states have return successors, (1168), 1130 states have call predecessors, (1168), 1160 states have call successors, (1168) [2022-11-03 03:30:25,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3027 states to 3027 states and 4568 transitions. [2022-11-03 03:30:25,904 INFO L78 Accepts]: Start accepts. Automaton has 3027 states and 4568 transitions. Word has length 180 [2022-11-03 03:30:25,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:30:25,904 INFO L495 AbstractCegarLoop]: Abstraction has 3027 states and 4568 transitions. [2022-11-03 03:30:25,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 3 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-03 03:30:25,905 INFO L276 IsEmpty]: Start isEmpty. Operand 3027 states and 4568 transitions. [2022-11-03 03:30:25,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-03 03:30:25,918 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:30:25,918 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-03 03:30:25,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:30:25,919 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:30:25,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:30:25,919 INFO L85 PathProgramCache]: Analyzing trace with hash -168554529, now seen corresponding path program 1 times [2022-11-03 03:30:25,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:30:25,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677756812] [2022-11-03 03:30:25,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:30:25,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:30:26,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:30:26,604 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-03 03:30:26,605 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:30:26,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677756812] [2022-11-03 03:30:26,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677756812] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:30:26,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:30:26,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:30:26,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132363913] [2022-11-03 03:30:26,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:30:26,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:30:26,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:30:26,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:30:26,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:30:26,611 INFO L87 Difference]: Start difference. First operand 3027 states and 4568 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 3 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-03 03:30:28,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:30:33,831 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:30:36,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:30:38,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:30:40,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:30:40,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:30:40,231 INFO L93 Difference]: Finished difference Result 5571 states and 8394 transitions. [2022-11-03 03:30:40,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:30:40,232 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 3 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 178 [2022-11-03 03:30:40,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:30:40,254 INFO L225 Difference]: With dead ends: 5571 [2022-11-03 03:30:40,254 INFO L226 Difference]: Without dead ends: 3049 [2022-11-03 03:30:40,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:30:40,270 INFO L413 NwaCegarLoop]: 1761 mSDtfsCounter, 1515 mSDsluCounter, 5398 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1519 SdHoareTripleChecker+Valid, 6624 SdHoareTripleChecker+Invalid, 747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 741 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:30:40,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1519 Valid, 6624 Invalid, 747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 741 Invalid, 3 Unknown, 0 Unchecked, 13.3s Time] [2022-11-03 03:30:40,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3049 states. [2022-11-03 03:30:40,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3049 to 3031. [2022-11-03 03:30:40,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3031 states, 1710 states have (on average 1.3116959064327485) internal successors, (2243), 1769 states have internal predecessors, (2243), 1160 states have call successors, (1160), 161 states have call predecessors, (1160), 160 states have return successors, (1167), 1130 states have call predecessors, (1167), 1159 states have call successors, (1167) [2022-11-03 03:30:40,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3031 states to 3031 states and 4570 transitions. [2022-11-03 03:30:40,493 INFO L78 Accepts]: Start accepts. Automaton has 3031 states and 4570 transitions. Word has length 178 [2022-11-03 03:30:40,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:30:40,494 INFO L495 AbstractCegarLoop]: Abstraction has 3031 states and 4570 transitions. [2022-11-03 03:30:40,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 3 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-03 03:30:40,494 INFO L276 IsEmpty]: Start isEmpty. Operand 3031 states and 4570 transitions. [2022-11-03 03:30:40,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-03 03:30:40,509 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:30:40,509 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-03 03:30:40,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 03:30:40,509 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:30:40,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:30:40,510 INFO L85 PathProgramCache]: Analyzing trace with hash 12204330, now seen corresponding path program 1 times [2022-11-03 03:30:40,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:30:40,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033979075] [2022-11-03 03:30:40,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:30:40,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:30:40,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:30:41,214 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-03 03:30:41,214 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:30:41,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033979075] [2022-11-03 03:30:41,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033979075] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:30:41,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:30:41,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:30:41,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859160018] [2022-11-03 03:30:41,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:30:41,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:30:41,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:30:41,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:30:41,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:30:41,219 INFO L87 Difference]: Start difference. First operand 3031 states and 4570 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-03 03:30:43,280 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 03:30:47,720 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:30:49,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:30:50,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:30:50,133 INFO L93 Difference]: Finished difference Result 7186 states and 10827 transitions. [2022-11-03 03:30:50,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:30:50,133 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 179 [2022-11-03 03:30:50,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:30:50,163 INFO L225 Difference]: With dead ends: 7186 [2022-11-03 03:30:50,163 INFO L226 Difference]: Without dead ends: 4659 [2022-11-03 03:30:50,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:30:50,180 INFO L413 NwaCegarLoop]: 1742 mSDtfsCounter, 1428 mSDsluCounter, 5359 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1432 SdHoareTripleChecker+Valid, 6567 SdHoareTripleChecker+Invalid, 747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:30:50,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1432 Valid, 6567 Invalid, 747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 742 Invalid, 2 Unknown, 0 Unchecked, 8.6s Time] [2022-11-03 03:30:50,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4659 states. [2022-11-03 03:30:50,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4659 to 4636. [2022-11-03 03:30:50,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4636 states, 2602 states have (on average 1.313989239046887) internal successors, (3419), 2698 states have internal predecessors, (3419), 1780 states have call successors, (1780), 254 states have call predecessors, (1780), 253 states have return successors, (1795), 1729 states have call predecessors, (1795), 1779 states have call successors, (1795) [2022-11-03 03:30:50,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4636 states to 4636 states and 6994 transitions. [2022-11-03 03:30:50,601 INFO L78 Accepts]: Start accepts. Automaton has 4636 states and 6994 transitions. Word has length 179 [2022-11-03 03:30:50,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:30:50,601 INFO L495 AbstractCegarLoop]: Abstraction has 4636 states and 6994 transitions. [2022-11-03 03:30:50,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-03 03:30:50,602 INFO L276 IsEmpty]: Start isEmpty. Operand 4636 states and 6994 transitions. [2022-11-03 03:30:50,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-03 03:30:50,617 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:30:50,617 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-03 03:30:50,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 03:30:50,617 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:30:50,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:30:50,618 INFO L85 PathProgramCache]: Analyzing trace with hash 71105298, now seen corresponding path program 1 times [2022-11-03 03:30:50,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:30:50,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980925589] [2022-11-03 03:30:50,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:30:50,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:30:50,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:30:51,626 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-11-03 03:30:51,626 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:30:51,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980925589] [2022-11-03 03:30:51,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980925589] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:30:51,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979849568] [2022-11-03 03:30:51,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:30:51,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:30:51,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb80d760-74b7-450e-887b-3f599b00e458/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:30:51,630 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb80d760-74b7-450e-887b-3f599b00e458/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:30:51,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb80d760-74b7-450e-887b-3f599b00e458/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 03:30:53,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:30:53,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 4605 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 03:30:53,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:30:53,279 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-03 03:30:53,280 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:30:53,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979849568] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:30:53,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:30:53,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-11-03 03:30:53,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271127449] [2022-11-03 03:30:53,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:30:53,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:30:53,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:30:53,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:30:53,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-03 03:30:53,283 INFO L87 Difference]: Start difference. First operand 4636 states and 6994 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-03 03:30:54,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:30:56,502 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:30:58,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:31:00,289 WARN L539 Checker$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 03:31:02,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:31:10,008 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:31:14,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:31:14,060 INFO L93 Difference]: Finished difference Result 10208 states and 15396 transitions. [2022-11-03 03:31:14,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 03:31:14,061 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) Word has length 190 [2022-11-03 03:31:14,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:31:14,107 INFO L225 Difference]: With dead ends: 10208 [2022-11-03 03:31:14,107 INFO L226 Difference]: Without dead ends: 7241 [2022-11-03 03:31:14,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2022-11-03 03:31:14,125 INFO L413 NwaCegarLoop]: 2033 mSDtfsCounter, 1463 mSDsluCounter, 10617 mSDsCounter, 0 mSdLazyCounter, 1442 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1467 SdHoareTripleChecker+Valid, 11515 SdHoareTripleChecker+Invalid, 1448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1442 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:31:14,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1467 Valid, 11515 Invalid, 1448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1442 Invalid, 4 Unknown, 0 Unchecked, 20.2s Time] [2022-11-03 03:31:14,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7241 states. [2022-11-03 03:31:14,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7241 to 7184. [2022-11-03 03:31:14,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7184 states, 4030 states have (on average 1.3173697270471465) internal successors, (5309), 4189 states have internal predecessors, (5309), 2757 states have call successors, (2757), 394 states have call predecessors, (2757), 396 states have return successors, (2791), 2672 states have call predecessors, (2791), 2756 states have call successors, (2791) [2022-11-03 03:31:14,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7184 states to 7184 states and 10857 transitions. [2022-11-03 03:31:14,771 INFO L78 Accepts]: Start accepts. Automaton has 7184 states and 10857 transitions. Word has length 190 [2022-11-03 03:31:14,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:31:14,772 INFO L495 AbstractCegarLoop]: Abstraction has 7184 states and 10857 transitions. [2022-11-03 03:31:14,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-03 03:31:14,773 INFO L276 IsEmpty]: Start isEmpty. Operand 7184 states and 10857 transitions. [2022-11-03 03:31:14,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-11-03 03:31:14,794 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:31:14,794 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-03 03:31:14,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb80d760-74b7-450e-887b-3f599b00e458/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 03:31:15,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb80d760-74b7-450e-887b-3f599b00e458/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:31:15,009 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:31:15,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:31:15,009 INFO L85 PathProgramCache]: Analyzing trace with hash 762020127, now seen corresponding path program 1 times [2022-11-03 03:31:15,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:31:15,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89371780] [2022-11-03 03:31:15,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:31:15,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:31:15,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:31:16,058 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-03 03:31:16,058 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:31:16,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89371780] [2022-11-03 03:31:16,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89371780] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:31:16,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74345610] [2022-11-03 03:31:16,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:31:16,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:31:16,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb80d760-74b7-450e-887b-3f599b00e458/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:31:16,062 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb80d760-74b7-450e-887b-3f599b00e458/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:31:16,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb80d760-74b7-450e-887b-3f599b00e458/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 03:31:17,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:31:17,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 4607 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 03:31:17,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:31:17,600 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-03 03:31:17,600 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:31:17,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74345610] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:31:17,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:31:17,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-11-03 03:31:17,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955687882] [2022-11-03 03:31:17,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:31:17,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:31:17,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:31:17,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:31:17,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-03 03:31:17,608 INFO L87 Difference]: Start difference. First operand 7184 states and 10857 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-03 03:31:19,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:31:28,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:31:31,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:31:31,837 INFO L93 Difference]: Finished difference Result 15440 states and 23304 transitions. [2022-11-03 03:31:31,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 03:31:31,838 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) Word has length 191 [2022-11-03 03:31:31,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:31:31,889 INFO L225 Difference]: With dead ends: 15440 [2022-11-03 03:31:31,890 INFO L226 Difference]: Without dead ends: 9925 [2022-11-03 03:31:31,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2022-11-03 03:31:31,916 INFO L413 NwaCegarLoop]: 2480 mSDtfsCounter, 1519 mSDsluCounter, 12689 mSDsCounter, 0 mSdLazyCounter, 1817 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1523 SdHoareTripleChecker+Valid, 13751 SdHoareTripleChecker+Invalid, 1820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1817 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:31:31,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1523 Valid, 13751 Invalid, 1820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1817 Invalid, 2 Unknown, 0 Unchecked, 13.7s Time] [2022-11-03 03:31:31,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9925 states. [2022-11-03 03:31:32,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9925 to 9858. [2022-11-03 03:31:32,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9858 states, 5528 states have (on average 1.3167510853835023) internal successors, (7279), 5752 states have internal predecessors, (7279), 3780 states have call successors, (3780), 542 states have call predecessors, (3780), 549 states have return successors, (3835), 3661 states have call predecessors, (3835), 3779 states have call successors, (3835) [2022-11-03 03:31:32,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9858 states to 9858 states and 14894 transitions. [2022-11-03 03:31:32,707 INFO L78 Accepts]: Start accepts. Automaton has 9858 states and 14894 transitions. Word has length 191 [2022-11-03 03:31:32,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:31:32,708 INFO L495 AbstractCegarLoop]: Abstraction has 9858 states and 14894 transitions. [2022-11-03 03:31:32,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-03 03:31:32,709 INFO L276 IsEmpty]: Start isEmpty. Operand 9858 states and 14894 transitions. [2022-11-03 03:31:32,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-11-03 03:31:32,735 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:31:32,735 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-03 03:31:32,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb80d760-74b7-450e-887b-3f599b00e458/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 03:31:32,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb80d760-74b7-450e-887b-3f599b00e458/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-03 03:31:32,961 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:31:32,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:31:32,961 INFO L85 PathProgramCache]: Analyzing trace with hash 809895481, now seen corresponding path program 1 times [2022-11-03 03:31:32,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:31:32,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681915285] [2022-11-03 03:31:32,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:31:32,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:31:33,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:31:33,997 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-03 03:31:33,998 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:31:33,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681915285] [2022-11-03 03:31:33,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681915285] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:31:33,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433400895] [2022-11-03 03:31:33,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:31:33,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:31:33,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb80d760-74b7-450e-887b-3f599b00e458/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:31:34,001 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb80d760-74b7-450e-887b-3f599b00e458/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:31:34,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb80d760-74b7-450e-887b-3f599b00e458/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 03:31:35,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:31:35,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 4609 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 03:31:35,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:31:35,454 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-03 03:31:35,454 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:31:35,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433400895] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:31:35,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:31:35,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-11-03 03:31:35,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151417917] [2022-11-03 03:31:35,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:31:35,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:31:35,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:31:35,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:31:35,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-03 03:31:35,457 INFO L87 Difference]: Start difference. First operand 9858 states and 14894 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-03 03:31:37,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:31:38,776 WARN L539 Checker$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 03:31:40,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:31:42,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:31:46,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:31:48,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:31:51,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:31:53,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:31:58,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:32:00,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:32:00,768 INFO L93 Difference]: Finished difference Result 20791 states and 31379 transitions. [2022-11-03 03:32:00,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 03:32:00,769 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) Word has length 192 [2022-11-03 03:32:00,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:32:00,827 INFO L225 Difference]: With dead ends: 20791 [2022-11-03 03:32:00,827 INFO L226 Difference]: Without dead ends: 12602 [2022-11-03 03:32:00,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2022-11-03 03:32:00,860 INFO L413 NwaCegarLoop]: 2224 mSDtfsCounter, 1548 mSDsluCounter, 11530 mSDsCounter, 0 mSdLazyCounter, 1644 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1552 SdHoareTripleChecker+Valid, 12458 SdHoareTripleChecker+Invalid, 1650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1644 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:32:00,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1552 Valid, 12458 Invalid, 1650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1644 Invalid, 4 Unknown, 0 Unchecked, 24.7s Time] [2022-11-03 03:32:00,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12602 states. [2022-11-03 03:32:01,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12602 to 9869. [2022-11-03 03:32:01,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9869 states, 5536 states have (on average 1.316293352601156) internal successors, (7287), 5761 states have internal predecessors, (7287), 3780 states have call successors, (3780), 542 states have call predecessors, (3780), 552 states have return successors, (3838), 3663 states have call predecessors, (3838), 3779 states have call successors, (3838) [2022-11-03 03:32:01,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9869 states to 9869 states and 14905 transitions. [2022-11-03 03:32:01,701 INFO L78 Accepts]: Start accepts. Automaton has 9869 states and 14905 transitions. Word has length 192 [2022-11-03 03:32:01,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:32:01,702 INFO L495 AbstractCegarLoop]: Abstraction has 9869 states and 14905 transitions. [2022-11-03 03:32:01,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-03 03:32:01,703 INFO L276 IsEmpty]: Start isEmpty. Operand 9869 states and 14905 transitions. [2022-11-03 03:32:01,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-11-03 03:32:01,731 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:32:01,731 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-03 03:32:01,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb80d760-74b7-450e-887b-3f599b00e458/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 03:32:01,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb80d760-74b7-450e-887b-3f599b00e458/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:32:01,941 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:32:01,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:32:01,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1896583706, now seen corresponding path program 1 times [2022-11-03 03:32:01,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:32:01,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57218667] [2022-11-03 03:32:01,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:32:01,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:32:02,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:32:03,025 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-03 03:32:03,026 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:32:03,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57218667] [2022-11-03 03:32:03,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57218667] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:32:03,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930144102] [2022-11-03 03:32:03,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:32:03,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:32:03,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb80d760-74b7-450e-887b-3f599b00e458/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:32:03,028 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb80d760-74b7-450e-887b-3f599b00e458/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:32:03,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb80d760-74b7-450e-887b-3f599b00e458/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 03:32:04,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:32:04,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 4611 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 03:32:04,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:32:04,617 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-03 03:32:04,619 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:32:04,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930144102] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:32:04,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:32:04,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-11-03 03:32:04,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874622189] [2022-11-03 03:32:04,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:32:04,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:32:04,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:32:04,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:32:04,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-03 03:32:04,622 INFO L87 Difference]: Start difference. First operand 9869 states and 14905 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-03 03:32:06,671 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 03:32:12,504 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:32:17,398 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:32:22,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:32:26,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:32:26,469 INFO L93 Difference]: Finished difference Result 20801 states and 31389 transitions. [2022-11-03 03:32:26,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 03:32:26,470 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) Word has length 193 [2022-11-03 03:32:26,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:32:26,533 INFO L225 Difference]: With dead ends: 20801 [2022-11-03 03:32:26,534 INFO L226 Difference]: Without dead ends: 12604 [2022-11-03 03:32:26,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2022-11-03 03:32:26,568 INFO L413 NwaCegarLoop]: 2695 mSDtfsCounter, 1519 mSDsluCounter, 13709 mSDsCounter, 0 mSdLazyCounter, 2015 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1523 SdHoareTripleChecker+Valid, 14826 SdHoareTripleChecker+Invalid, 2020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2015 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:32:26,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1523 Valid, 14826 Invalid, 2020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2015 Invalid, 4 Unknown, 0 Unchecked, 21.3s Time] [2022-11-03 03:32:26,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12604 states. [2022-11-03 03:32:27,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12604 to 9870. [2022-11-03 03:32:27,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9870 states, 5537 states have (on average 1.3162362290048764) internal successors, (7288), 5761 states have internal predecessors, (7288), 3780 states have call successors, (3780), 542 states have call predecessors, (3780), 552 states have return successors, (3838), 3664 states have call predecessors, (3838), 3779 states have call successors, (3838) [2022-11-03 03:32:27,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9870 states to 9870 states and 14906 transitions. [2022-11-03 03:32:27,747 INFO L78 Accepts]: Start accepts. Automaton has 9870 states and 14906 transitions. Word has length 193 [2022-11-03 03:32:27,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:32:27,756 INFO L495 AbstractCegarLoop]: Abstraction has 9870 states and 14906 transitions. [2022-11-03 03:32:27,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-03 03:32:27,756 INFO L276 IsEmpty]: Start isEmpty. Operand 9870 states and 14906 transitions. [2022-11-03 03:32:27,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-11-03 03:32:27,839 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:32:27,839 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-03 03:32:27,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb80d760-74b7-450e-887b-3f599b00e458/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 03:32:28,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb80d760-74b7-450e-887b-3f599b00e458/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:32:28,050 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:32:28,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:32:28,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1576539510, now seen corresponding path program 1 times [2022-11-03 03:32:28,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:32:28,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474068285] [2022-11-03 03:32:28,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:32:28,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:32:28,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:32:28,526 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-11-03 03:32:28,526 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:32:28,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474068285] [2022-11-03 03:32:28,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474068285] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:32:28,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:32:28,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:32:28,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201827796] [2022-11-03 03:32:28,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:32:28,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:32:28,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:32:28,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:32:28,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:32:28,530 INFO L87 Difference]: Start difference. First operand 9870 states and 14906 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-03 03:32:30,582 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 03:32:32,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:32:32,861 INFO L93 Difference]: Finished difference Result 18719 states and 28107 transitions. [2022-11-03 03:32:32,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:32:32,862 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 204 [2022-11-03 03:32:32,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:32:32,906 INFO L225 Difference]: With dead ends: 18719 [2022-11-03 03:32:32,906 INFO L226 Difference]: Without dead ends: 8868 [2022-11-03 03:32:32,943 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 03:32:32,943 INFO L413 NwaCegarLoop]: 1255 mSDtfsCounter, 1387 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1387 SdHoareTripleChecker+Valid, 1285 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:32:32,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1387 Valid, 1285 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 181 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2022-11-03 03:32:32,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8868 states. [2022-11-03 03:32:33,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8868 to 8868. [2022-11-03 03:32:33,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8868 states, 4970 states have (on average 1.3014084507042254) internal successors, (6468), 5150 states have internal predecessors, (6468), 3350 states have call successors, (3350), 537 states have call predecessors, (3350), 547 states have return successors, (3398), 3267 states have call predecessors, (3398), 3349 states have call successors, (3398) [2022-11-03 03:32:33,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8868 states to 8868 states and 13216 transitions. [2022-11-03 03:32:33,718 INFO L78 Accepts]: Start accepts. Automaton has 8868 states and 13216 transitions. Word has length 204 [2022-11-03 03:32:33,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:32:33,719 INFO L495 AbstractCegarLoop]: Abstraction has 8868 states and 13216 transitions. [2022-11-03 03:32:33,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-03 03:32:33,720 INFO L276 IsEmpty]: Start isEmpty. Operand 8868 states and 13216 transitions. [2022-11-03 03:32:33,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-11-03 03:32:33,743 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:32:33,743 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-03 03:32:33,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 03:32:33,744 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:32:33,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:32:33,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1225185787, now seen corresponding path program 1 times [2022-11-03 03:32:33,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:32:33,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476492035] [2022-11-03 03:32:33,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:32:33,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:32:33,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:32:34,145 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-11-03 03:32:34,146 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:32:34,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476492035] [2022-11-03 03:32:34,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476492035] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:32:34,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:32:34,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:32:34,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474209271] [2022-11-03 03:32:34,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:32:34,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:32:34,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:32:34,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:32:34,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:32:34,148 INFO L87 Difference]: Start difference. First operand 8868 states and 13216 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-03 03:32:38,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:32:38,018 INFO L93 Difference]: Finished difference Result 22468 states and 33413 transitions. [2022-11-03 03:32:38,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:32:38,018 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 205 [2022-11-03 03:32:38,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:32:38,082 INFO L225 Difference]: With dead ends: 22468 [2022-11-03 03:32:38,083 INFO L226 Difference]: Without dead ends: 13632 [2022-11-03 03:32:38,117 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 03:32:38,118 INFO L413 NwaCegarLoop]: 1559 mSDtfsCounter, 1220 mSDsluCounter, 1369 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1220 SdHoareTripleChecker+Valid, 2765 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:32:38,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1220 Valid, 2765 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-03 03:32:38,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13632 states. [2022-11-03 03:32:39,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13632 to 13569. [2022-11-03 03:32:39,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13569 states, 7611 states have (on average 1.2943108658520561) internal successors, (9851), 7885 states have internal predecessors, (9851), 5119 states have call successors, (5119), 819 states have call predecessors, (5119), 838 states have return successors, (5192), 4986 states have call predecessors, (5192), 5118 states have call successors, (5192) [2022-11-03 03:32:39,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13569 states to 13569 states and 20162 transitions. [2022-11-03 03:32:39,229 INFO L78 Accepts]: Start accepts. Automaton has 13569 states and 20162 transitions. Word has length 205 [2022-11-03 03:32:39,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:32:39,230 INFO L495 AbstractCegarLoop]: Abstraction has 13569 states and 20162 transitions. [2022-11-03 03:32:39,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-03 03:32:39,230 INFO L276 IsEmpty]: Start isEmpty. Operand 13569 states and 20162 transitions. [2022-11-03 03:32:39,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-11-03 03:32:39,240 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:32:39,240 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-03 03:32:39,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 03:32:39,241 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:32:39,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:32:39,241 INFO L85 PathProgramCache]: Analyzing trace with hash -771551990, now seen corresponding path program 1 times [2022-11-03 03:32:39,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:32:39,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490067098] [2022-11-03 03:32:39,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:32:39,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:32:39,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:32:40,217 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-11-03 03:32:40,217 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:32:40,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490067098] [2022-11-03 03:32:40,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490067098] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:32:40,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804994136] [2022-11-03 03:32:40,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:32:40,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:32:40,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb80d760-74b7-450e-887b-3f599b00e458/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:32:40,219 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb80d760-74b7-450e-887b-3f599b00e458/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:32:40,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb80d760-74b7-450e-887b-3f599b00e458/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 03:32:41,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:32:41,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 4678 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 03:32:41,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:32:41,886 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2022-11-03 03:32:41,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:32:42,423 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2022-11-03 03:32:42,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804994136] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:32:42,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [648201932] [2022-11-03 03:32:42,463 INFO L159 IcfgInterpreter]: Started Sifa with 118 locations of interest [2022-11-03 03:32:42,463 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:32:42,470 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:32:42,475 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:32:42,475 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:32:52,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:22,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:22,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:55,364 INFO L244 Elim1Store]: Index analysis took 65942 ms