./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--ems_usb.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_02ee988a-6f40-45e8-9977-00e28e5df7ae/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ee988a-6f40-45e8-9977-00e28e5df7ae/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_02ee988a-6f40-45e8-9977-00e28e5df7ae/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ee988a-6f40-45e8-9977-00e28e5df7ae/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--ems_usb.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ee988a-6f40-45e8-9977-00e28e5df7ae/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_02ee988a-6f40-45e8-9977-00e28e5df7ae/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 be936ec9376452d086f72aa92ac4fe7deb233a068e40e0ed8f478fbc228d19b6 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:53:27,680 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:53:27,682 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:53:27,713 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:53:27,716 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:53:27,721 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:53:27,724 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:53:27,728 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:53:27,731 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:53:27,737 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:53:27,739 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:53:27,742 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:53:27,742 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:53:27,745 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:53:27,747 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:53:27,750 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:53:27,752 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:53:27,753 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:53:27,755 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:53:27,763 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:53:27,764 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:53:27,766 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:53:27,769 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:53:27,771 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:53:27,780 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:53:27,780 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:53:27,781 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:53:27,783 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:53:27,783 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:53:27,784 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:53:27,785 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:53:27,786 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:53:27,788 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:53:27,790 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:53:27,793 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:53:27,793 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:53:27,794 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:53:27,794 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:53:27,794 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:53:27,795 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:53:27,796 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:53:27,798 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ee988a-6f40-45e8-9977-00e28e5df7ae/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:53:27,844 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:53:27,844 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:53:27,845 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:53:27,845 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:53:27,846 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:53:27,847 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:53:27,847 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:53:27,847 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:53:27,847 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:53:27,848 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:53:27,849 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:53:27,849 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:53:27,849 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:53:27,849 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:53:27,850 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:53:27,850 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:53:27,850 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:53:27,850 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:53:27,851 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:53:27,851 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:53:27,852 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:53:27,852 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:53:27,852 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:53:27,854 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:53:27,854 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:53:27,854 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:53:27,854 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:53:27,855 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:53:27,855 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:53:27,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:53:27,855 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:53:27,856 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:53:27,856 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:53:27,856 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:53:27,856 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:53:27,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:53:27,857 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:53:27,857 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:53:27,857 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_02ee988a-6f40-45e8-9977-00e28e5df7ae/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ee988a-6f40-45e8-9977-00e28e5df7ae/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be936ec9376452d086f72aa92ac4fe7deb233a068e40e0ed8f478fbc228d19b6 [2022-11-03 02:53:28,263 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:53:28,306 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:53:28,310 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:53:28,311 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:53:28,312 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:53:28,314 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ee988a-6f40-45e8-9977-00e28e5df7ae/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--ems_usb.ko-entry_point.cil.out.i [2022-11-03 02:53:28,399 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ee988a-6f40-45e8-9977-00e28e5df7ae/bin/utaipan-7li7fVZpFI/data/da9f83080/8b7fc5ca06a34c2ea8d0a4d69206b4fc/FLAGffc6ec26b [2022-11-03 02:53:29,427 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:53:29,428 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ee988a-6f40-45e8-9977-00e28e5df7ae/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--ems_usb.ko-entry_point.cil.out.i [2022-11-03 02:53:29,477 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ee988a-6f40-45e8-9977-00e28e5df7ae/bin/utaipan-7li7fVZpFI/data/da9f83080/8b7fc5ca06a34c2ea8d0a4d69206b4fc/FLAGffc6ec26b [2022-11-03 02:53:29,803 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ee988a-6f40-45e8-9977-00e28e5df7ae/bin/utaipan-7li7fVZpFI/data/da9f83080/8b7fc5ca06a34c2ea8d0a4d69206b4fc [2022-11-03 02:53:29,806 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:53:29,808 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:53:29,810 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:53:29,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:53:29,815 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:53:29,817 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:53:29" (1/1) ... [2022-11-03 02:53:29,818 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77553f72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:53:29, skipping insertion in model container [2022-11-03 02:53:29,818 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:53:29" (1/1) ... [2022-11-03 02:53:29,827 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:53:29,982 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:53:31,007 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_02ee988a-6f40-45e8-9977-00e28e5df7ae/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--ems_usb.ko-entry_point.cil.out.i[164250,164263] [2022-11-03 02:53:31,603 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:53:31,647 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:53:31,891 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_02ee988a-6f40-45e8-9977-00e28e5df7ae/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--ems_usb.ko-entry_point.cil.out.i[164250,164263] [2022-11-03 02:53:31,988 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:53:32,043 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:53:32,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:53:32 WrapperNode [2022-11-03 02:53:32,044 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:53:32,045 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:53:32,045 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:53:32,045 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:53:32,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:53:32" (1/1) ... [2022-11-03 02:53:32,129 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:53:32" (1/1) ... [2022-11-03 02:53:32,278 INFO L138 Inliner]: procedures = 169, calls = 719, calls flagged for inlining = 77, calls inlined = 77, statements flattened = 1996 [2022-11-03 02:53:32,279 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:53:32,280 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:53:32,280 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:53:32,280 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:53:32,291 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:53:32" (1/1) ... [2022-11-03 02:53:32,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:53:32" (1/1) ... [2022-11-03 02:53:32,322 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:53:32" (1/1) ... [2022-11-03 02:53:32,328 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:53:32" (1/1) ... [2022-11-03 02:53:32,403 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:53:32" (1/1) ... [2022-11-03 02:53:32,413 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:53:32" (1/1) ... [2022-11-03 02:53:32,424 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:53:32" (1/1) ... [2022-11-03 02:53:32,433 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:53:32" (1/1) ... [2022-11-03 02:53:32,449 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:53:32,450 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:53:32,451 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:53:32,451 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:53:32,452 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:53:32" (1/1) ... [2022-11-03 02:53:32,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:53:32,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ee988a-6f40-45e8-9977-00e28e5df7ae/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:53:32,501 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ee988a-6f40-45e8-9977-00e28e5df7ae/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:53:32,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ee988a-6f40-45e8-9977-00e28e5df7ae/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:53:32,545 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-11-03 02:53:32,545 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-11-03 02:53:32,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 02:53:32,546 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_18 [2022-11-03 02:53:32,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_18 [2022-11-03 02:53:32,546 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_4 [2022-11-03 02:53:32,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_4 [2022-11-03 02:53:32,546 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_3 [2022-11-03 02:53:32,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_3 [2022-11-03 02:53:32,547 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_2 [2022-11-03 02:53:32,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_2 [2022-11-03 02:53:32,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 02:53:32,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 02:53:32,547 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 02:53:32,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 02:53:32,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:53:32,548 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-03 02:53:32,548 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-03 02:53:32,548 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_read_bulk_callback [2022-11-03 02:53:32,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_read_bulk_callback [2022-11-03 02:53:32,549 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2022-11-03 02:53:32,549 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2022-11-03 02:53:32,549 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2022-11-03 02:53:32,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2022-11-03 02:53:32,549 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_control_cmd [2022-11-03 02:53:32,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_control_cmd [2022-11-03 02:53:32,550 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-03 02:53:32,550 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-03 02:53:32,550 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-03 02:53:32,550 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-03 02:53:32,551 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:53:32,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:53:32,551 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2022-11-03 02:53:32,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2022-11-03 02:53:32,551 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-03 02:53:32,552 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-03 02:53:32,552 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_anchored_urbs [2022-11-03 02:53:32,552 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_anchored_urbs [2022-11-03 02:53:32,552 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 02:53:32,552 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 02:53:32,552 INFO L130 BoogieDeclarations]: Found specification of procedure init_usb_anchor [2022-11-03 02:53:32,553 INFO L138 BoogieDeclarations]: Found implementation of procedure init_usb_anchor [2022-11-03 02:53:32,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:53:32,553 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 02:53:32,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 02:53:32,553 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:53:32,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:53:32,554 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 02:53:32,554 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 02:53:32,554 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-03 02:53:32,554 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-03 02:53:32,555 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_command_msg [2022-11-03 02:53:32,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_command_msg [2022-11-03 02:53:32,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:53:32,555 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2022-11-03 02:53:32,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2022-11-03 02:53:32,555 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_all_urbs [2022-11-03 02:53:32,556 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_all_urbs [2022-11-03 02:53:32,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:53:32,556 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-03 02:53:32,557 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-03 02:53:32,557 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 02:53:32,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 02:53:32,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:53:32,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:53:32,558 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_write_mode [2022-11-03 02:53:32,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_write_mode [2022-11-03 02:53:32,558 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:53:32,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:53:32,558 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2022-11-03 02:53:32,558 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2022-11-03 02:53:32,559 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2022-11-03 02:53:32,559 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2022-11-03 02:53:32,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:53:32,559 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_disconnect [2022-11-03 02:53:32,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_disconnect [2022-11-03 02:53:32,560 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2022-11-03 02:53:32,560 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2022-11-03 02:53:32,560 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2022-11-03 02:53:32,560 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2022-11-03 02:53:32,560 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_read_interrupt_callback [2022-11-03 02:53:32,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_read_interrupt_callback [2022-11-03 02:53:32,561 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2022-11-03 02:53:32,561 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2022-11-03 02:53:32,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:53:32,561 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2022-11-03 02:53:32,561 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2022-11-03 02:53:32,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:53:32,562 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_rx_err [2022-11-03 02:53:32,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_rx_err [2022-11-03 02:53:32,562 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-03 02:53:32,562 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-03 02:53:32,562 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2022-11-03 02:53:32,563 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2022-11-03 02:53:32,563 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-03 02:53:32,563 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-03 02:53:32,563 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2022-11-03 02:53:32,563 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2022-11-03 02:53:32,564 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-03 02:53:32,564 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-03 02:53:32,564 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2022-11-03 02:53:32,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2022-11-03 02:53:32,564 INFO L130 BoogieDeclarations]: Found specification of procedure close_candev [2022-11-03 02:53:32,564 INFO L138 BoogieDeclarations]: Found implementation of procedure close_candev [2022-11-03 02:53:32,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:53:32,565 INFO L130 BoogieDeclarations]: Found specification of procedure free_candev [2022-11-03 02:53:32,565 INFO L138 BoogieDeclarations]: Found implementation of procedure free_candev [2022-11-03 02:53:32,565 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 02:53:32,565 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-03 02:53:32,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-03 02:53:32,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:53:32,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:53:33,328 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:53:33,334 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:53:33,611 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 02:53:34,633 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2022-11-03 02:53:38,753 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:53:39,577 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:53:39,578 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 02:53:39,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:53:39 BoogieIcfgContainer [2022-11-03 02:53:39,590 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:53:39,593 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:53:39,593 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:53:39,597 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:53:39,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:53:29" (1/3) ... [2022-11-03 02:53:39,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57309ce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:53:39, skipping insertion in model container [2022-11-03 02:53:39,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:53:32" (2/3) ... [2022-11-03 02:53:39,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57309ce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:53:39, skipping insertion in model container [2022-11-03 02:53:39,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:53:39" (3/3) ... [2022-11-03 02:53:39,603 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--ems_usb.ko-entry_point.cil.out.i [2022-11-03 02:53:39,628 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:53:39,628 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:53:39,740 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:53:39,755 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;@10d88e6b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:53:39,756 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:53:39,766 INFO L276 IsEmpty]: Start isEmpty. Operand has 484 states, 301 states have (on average 1.372093023255814) internal successors, (413), 325 states have internal predecessors, (413), 135 states have call successors, (135), 48 states have call predecessors, (135), 46 states have return successors, (129), 124 states have call predecessors, (129), 129 states have call successors, (129) [2022-11-03 02:53:39,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-03 02:53:39,778 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:53:39,779 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:53:39,780 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:53:39,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:53:39,788 INFO L85 PathProgramCache]: Analyzing trace with hash 241924979, now seen corresponding path program 1 times [2022-11-03 02:53:39,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:53:39,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830117776] [2022-11-03 02:53:39,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:53:39,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:53:40,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:53:40,543 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 02:53:40,543 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:53:40,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830117776] [2022-11-03 02:53:40,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830117776] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:53:40,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:53:40,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:53:40,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210582183] [2022-11-03 02:53:40,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:53:40,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:53:40,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:53:40,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:53:40,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:53:40,606 INFO L87 Difference]: Start difference. First operand has 484 states, 301 states have (on average 1.372093023255814) internal successors, (413), 325 states have internal predecessors, (413), 135 states have call successors, (135), 48 states have call predecessors, (135), 46 states have return successors, (129), 124 states have call predecessors, (129), 129 states have call successors, (129) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 02:53:44,061 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 02:53:45,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:53:46,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:53:47,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:53:47,303 INFO L93 Difference]: Finished difference Result 1418 states and 1985 transitions. [2022-11-03 02:53:47,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:53:47,306 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2022-11-03 02:53:47,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:53:47,330 INFO L225 Difference]: With dead ends: 1418 [2022-11-03 02:53:47,330 INFO L226 Difference]: Without dead ends: 919 [2022-11-03 02:53:47,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:53:47,342 INFO L413 NwaCegarLoop]: 692 mSDtfsCounter, 629 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:53:47,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [632 Valid, 1253 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 208 Invalid, 1 Unknown, 0 Unchecked, 6.5s Time] [2022-11-03 02:53:47,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2022-11-03 02:53:47,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 919. [2022-11-03 02:53:47,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 919 states, 580 states have (on average 1.3413793103448275) internal successors, (778), 608 states have internal predecessors, (778), 248 states have call successors, (248), 91 states have call predecessors, (248), 90 states have return successors, (246), 233 states have call predecessors, (246), 243 states have call successors, (246) [2022-11-03 02:53:47,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1272 transitions. [2022-11-03 02:53:47,515 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1272 transitions. Word has length 23 [2022-11-03 02:53:47,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:53:47,516 INFO L495 AbstractCegarLoop]: Abstraction has 919 states and 1272 transitions. [2022-11-03 02:53:47,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 02:53:47,517 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1272 transitions. [2022-11-03 02:53:47,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-03 02:53:47,523 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:53:47,524 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:53:47,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:53:47,526 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:53:47,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:53:47,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1323290017, now seen corresponding path program 1 times [2022-11-03 02:53:47,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:53:47,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318665098] [2022-11-03 02:53:47,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:53:47,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:53:47,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:53:48,208 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 02:53:48,208 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:53:48,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318665098] [2022-11-03 02:53:48,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318665098] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:53:48,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:53:48,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:53:48,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3517463] [2022-11-03 02:53:48,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:53:48,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:53:48,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:53:48,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:53:48,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:53:48,221 INFO L87 Difference]: Start difference. First operand 919 states and 1272 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 02:53:51,408 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:53:53,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:53:54,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:53:54,665 INFO L93 Difference]: Finished difference Result 1621 states and 2230 transitions. [2022-11-03 02:53:54,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:53:54,666 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 32 [2022-11-03 02:53:54,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:53:54,679 INFO L225 Difference]: With dead ends: 1621 [2022-11-03 02:53:54,679 INFO L226 Difference]: Without dead ends: 1618 [2022-11-03 02:53:54,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:53:54,683 INFO L413 NwaCegarLoop]: 651 mSDtfsCounter, 471 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 1198 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:53:54,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [474 Valid, 1198 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 205 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2022-11-03 02:53:54,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1618 states. [2022-11-03 02:53:54,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1618 to 1606. [2022-11-03 02:53:54,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1606 states, 1021 states have (on average 1.3486777668952008) internal successors, (1377), 1075 states have internal predecessors, (1377), 416 states have call successors, (416), 171 states have call predecessors, (416), 168 states have return successors, (420), 385 states have call predecessors, (420), 411 states have call successors, (420) [2022-11-03 02:53:54,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 2213 transitions. [2022-11-03 02:53:54,862 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 2213 transitions. Word has length 32 [2022-11-03 02:53:54,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:53:54,864 INFO L495 AbstractCegarLoop]: Abstraction has 1606 states and 2213 transitions. [2022-11-03 02:53:54,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 02:53:54,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 2213 transitions. [2022-11-03 02:53:54,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-03 02:53:54,871 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:53:54,871 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:53:54,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:53:54,872 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:53:54,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:53:54,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1927370355, now seen corresponding path program 1 times [2022-11-03 02:53:54,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:53:54,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765395535] [2022-11-03 02:53:54,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:53:54,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:53:54,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:53:55,330 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 02:53:55,331 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:53:55,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765395535] [2022-11-03 02:53:55,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765395535] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:53:55,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:53:55,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:53:55,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774191271] [2022-11-03 02:53:55,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:53:55,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:53:55,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:53:55,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:53:55,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:53:55,340 INFO L87 Difference]: Start difference. First operand 1606 states and 2213 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 02:53:57,286 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:53:59,433 WARN L539 Checker$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 02:54:00,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:54:00,497 INFO L93 Difference]: Finished difference Result 1612 states and 2219 transitions. [2022-11-03 02:54:00,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:54:00,498 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 33 [2022-11-03 02:54:00,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:54:00,510 INFO L225 Difference]: With dead ends: 1612 [2022-11-03 02:54:00,511 INFO L226 Difference]: Without dead ends: 1609 [2022-11-03 02:54:00,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:54:00,514 INFO L413 NwaCegarLoop]: 550 mSDtfsCounter, 629 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:54:00,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [632 Valid, 554 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2022-11-03 02:54:00,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1609 states. [2022-11-03 02:54:00,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1609 to 1609. [2022-11-03 02:54:00,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1609 states, 1023 states have (on average 1.3470185728250244) internal successors, (1378), 1077 states have internal predecessors, (1378), 415 states have call successors, (415), 172 states have call predecessors, (415), 170 states have return successors, (423), 385 states have call predecessors, (423), 411 states have call successors, (423) [2022-11-03 02:54:00,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1609 states to 1609 states and 2216 transitions. [2022-11-03 02:54:00,711 INFO L78 Accepts]: Start accepts. Automaton has 1609 states and 2216 transitions. Word has length 33 [2022-11-03 02:54:00,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:54:00,713 INFO L495 AbstractCegarLoop]: Abstraction has 1609 states and 2216 transitions. [2022-11-03 02:54:00,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 02:54:00,714 INFO L276 IsEmpty]: Start isEmpty. Operand 1609 states and 2216 transitions. [2022-11-03 02:54:00,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-03 02:54:00,718 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:54:00,718 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:54:00,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:54:00,721 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:54:00,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:54:00,722 INFO L85 PathProgramCache]: Analyzing trace with hash -381368350, now seen corresponding path program 1 times [2022-11-03 02:54:00,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:54:00,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511683105] [2022-11-03 02:54:00,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:54:00,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:54:00,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:54:00,962 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 02:54:00,962 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:54:00,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511683105] [2022-11-03 02:54:00,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511683105] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:54:00,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:54:00,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:54:00,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755853814] [2022-11-03 02:54:00,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:54:00,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:54:00,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:54:00,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:54:00,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:54:00,966 INFO L87 Difference]: Start difference. First operand 1609 states and 2216 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 02:54:03,987 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 02:54:04,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:54:04,835 INFO L93 Difference]: Finished difference Result 1611 states and 2217 transitions. [2022-11-03 02:54:04,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:54:04,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 34 [2022-11-03 02:54:04,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:54:04,848 INFO L225 Difference]: With dead ends: 1611 [2022-11-03 02:54:04,848 INFO L226 Difference]: Without dead ends: 1608 [2022-11-03 02:54:04,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:54:04,851 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 626 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 629 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:54:04,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [629 Valid, 552 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2022-11-03 02:54:04,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1608 states. [2022-11-03 02:54:04,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1608 to 1608. [2022-11-03 02:54:04,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1608 states, 1023 states have (on average 1.346041055718475) internal successors, (1377), 1076 states have internal predecessors, (1377), 414 states have call successors, (414), 172 states have call predecessors, (414), 170 states have return successors, (423), 385 states have call predecessors, (423), 411 states have call successors, (423) [2022-11-03 02:54:05,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1608 states to 1608 states and 2214 transitions. [2022-11-03 02:54:05,007 INFO L78 Accepts]: Start accepts. Automaton has 1608 states and 2214 transitions. Word has length 34 [2022-11-03 02:54:05,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:54:05,008 INFO L495 AbstractCegarLoop]: Abstraction has 1608 states and 2214 transitions. [2022-11-03 02:54:05,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 02:54:05,008 INFO L276 IsEmpty]: Start isEmpty. Operand 1608 states and 2214 transitions. [2022-11-03 02:54:05,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-03 02:54:05,009 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:54:05,010 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:54:05,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:54:05,010 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:54:05,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:54:05,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1062180694, now seen corresponding path program 1 times [2022-11-03 02:54:05,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:54:05,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850388655] [2022-11-03 02:54:05,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:54:05,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:54:05,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:54:05,157 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 02:54:05,158 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:54:05,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850388655] [2022-11-03 02:54:05,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850388655] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:54:05,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:54:05,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:54:05,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71143905] [2022-11-03 02:54:05,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:54:05,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:54:05,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:54:05,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:54:05,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:54:05,161 INFO L87 Difference]: Start difference. First operand 1608 states and 2214 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 02:54:06,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:54:08,937 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:54:10,541 WARN L539 Checker$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 02:54:10,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:54:10,585 INFO L93 Difference]: Finished difference Result 1610 states and 2215 transitions. [2022-11-03 02:54:10,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:54:10,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 35 [2022-11-03 02:54:10,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:54:10,596 INFO L225 Difference]: With dead ends: 1610 [2022-11-03 02:54:10,597 INFO L226 Difference]: Without dead ends: 1607 [2022-11-03 02:54:10,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:54:10,599 INFO L413 NwaCegarLoop]: 546 mSDtfsCounter, 623 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:54:10,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [626 Valid, 550 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2022-11-03 02:54:10,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1607 states. [2022-11-03 02:54:10,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1607 to 1607. [2022-11-03 02:54:10,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1607 states, 1023 states have (on average 1.3450635386119256) internal successors, (1376), 1075 states have internal predecessors, (1376), 413 states have call successors, (413), 172 states have call predecessors, (413), 170 states have return successors, (423), 385 states have call predecessors, (423), 411 states have call successors, (423) [2022-11-03 02:54:10,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1607 states to 1607 states and 2212 transitions. [2022-11-03 02:54:10,720 INFO L78 Accepts]: Start accepts. Automaton has 1607 states and 2212 transitions. Word has length 35 [2022-11-03 02:54:10,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:54:10,720 INFO L495 AbstractCegarLoop]: Abstraction has 1607 states and 2212 transitions. [2022-11-03 02:54:10,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 02:54:10,721 INFO L276 IsEmpty]: Start isEmpty. Operand 1607 states and 2212 transitions. [2022-11-03 02:54:10,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-03 02:54:10,722 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:54:10,722 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:54:10,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:54:10,723 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:54:10,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:54:10,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1432434331, now seen corresponding path program 1 times [2022-11-03 02:54:10,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:54:10,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560681045] [2022-11-03 02:54:10,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:54:10,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:54:10,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:54:10,890 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 02:54:10,890 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:54:10,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560681045] [2022-11-03 02:54:10,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560681045] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:54:10,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:54:10,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:54:10,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893626347] [2022-11-03 02:54:10,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:54:10,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:54:10,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:54:10,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:54:10,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:54:10,893 INFO L87 Difference]: Start difference. First operand 1607 states and 2212 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 02:54:14,468 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 02:54:15,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:54:15,243 INFO L93 Difference]: Finished difference Result 1609 states and 2213 transitions. [2022-11-03 02:54:15,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:54:15,244 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2022-11-03 02:54:15,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:54:15,254 INFO L225 Difference]: With dead ends: 1609 [2022-11-03 02:54:15,254 INFO L226 Difference]: Without dead ends: 1600 [2022-11-03 02:54:15,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:54:15,256 INFO L413 NwaCegarLoop]: 545 mSDtfsCounter, 620 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:54:15,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [623 Valid, 549 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2022-11-03 02:54:15,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1600 states. [2022-11-03 02:54:15,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1600 to 1600. [2022-11-03 02:54:15,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1600 states, 1017 states have (on average 1.343166175024582) internal successors, (1366), 1068 states have internal predecessors, (1366), 412 states have call successors, (412), 172 states have call predecessors, (412), 170 states have return successors, (423), 385 states have call predecessors, (423), 411 states have call successors, (423) [2022-11-03 02:54:15,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1600 states to 1600 states and 2201 transitions. [2022-11-03 02:54:15,391 INFO L78 Accepts]: Start accepts. Automaton has 1600 states and 2201 transitions. Word has length 36 [2022-11-03 02:54:15,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:54:15,391 INFO L495 AbstractCegarLoop]: Abstraction has 1600 states and 2201 transitions. [2022-11-03 02:54:15,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 02:54:15,392 INFO L276 IsEmpty]: Start isEmpty. Operand 1600 states and 2201 transitions. [2022-11-03 02:54:15,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-03 02:54:15,396 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:54:15,397 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-11-03 02:54:15,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:54:15,397 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:54:15,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:54:15,398 INFO L85 PathProgramCache]: Analyzing trace with hash -413336596, now seen corresponding path program 1 times [2022-11-03 02:54:15,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:54:15,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879459495] [2022-11-03 02:54:15,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:54:15,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:54:15,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:54:15,600 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 02:54:15,630 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:54:15,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879459495] [2022-11-03 02:54:15,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879459495] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:54:15,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:54:15,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:54:15,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921095622] [2022-11-03 02:54:15,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:54:15,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:54:15,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:54:15,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:54:15,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:54:15,632 INFO L87 Difference]: Start difference. First operand 1600 states and 2201 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 02:54:19,964 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 02:54:22,754 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:54:22,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:54:22,784 INFO L93 Difference]: Finished difference Result 3662 states and 4990 transitions. [2022-11-03 02:54:22,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:54:22,785 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 70 [2022-11-03 02:54:22,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:54:22,798 INFO L225 Difference]: With dead ends: 3662 [2022-11-03 02:54:22,798 INFO L226 Difference]: Without dead ends: 2067 [2022-11-03 02:54:22,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:54:22,807 INFO L413 NwaCegarLoop]: 588 mSDtfsCounter, 185 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:54:22,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 1114 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 213 Invalid, 1 Unknown, 0 Unchecked, 7.0s Time] [2022-11-03 02:54:22,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2067 states. [2022-11-03 02:54:22,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2067 to 2054. [2022-11-03 02:54:22,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2054 states, 1311 states have (on average 1.3325705568268498) internal successors, (1747), 1364 states have internal predecessors, (1747), 511 states have call successors, (511), 235 states have call predecessors, (511), 231 states have return successors, (522), 480 states have call predecessors, (522), 510 states have call successors, (522) [2022-11-03 02:54:23,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2054 states to 2054 states and 2780 transitions. [2022-11-03 02:54:23,029 INFO L78 Accepts]: Start accepts. Automaton has 2054 states and 2780 transitions. Word has length 70 [2022-11-03 02:54:23,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:54:23,031 INFO L495 AbstractCegarLoop]: Abstraction has 2054 states and 2780 transitions. [2022-11-03 02:54:23,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 02:54:23,031 INFO L276 IsEmpty]: Start isEmpty. Operand 2054 states and 2780 transitions. [2022-11-03 02:54:23,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-03 02:54:23,041 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:54:23,041 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 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] [2022-11-03 02:54:23,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:54:23,042 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:54:23,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:54:23,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1526546868, now seen corresponding path program 1 times [2022-11-03 02:54:23,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:54:23,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278413359] [2022-11-03 02:54:23,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:54:23,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:54:23,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:54:23,279 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 02:54:23,279 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:54:23,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278413359] [2022-11-03 02:54:23,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278413359] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:54:23,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:54:23,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:54:23,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612679379] [2022-11-03 02:54:23,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:54:23,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:54:23,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:54:23,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:54:23,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:54:23,283 INFO L87 Difference]: Start difference. First operand 2054 states and 2780 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-03 02:54:27,535 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 02:54:30,431 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:54:32,466 WARN L539 Checker$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 02:54:32,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:54:32,476 INFO L93 Difference]: Finished difference Result 4566 states and 6162 transitions. [2022-11-03 02:54:32,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:54:32,500 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 82 [2022-11-03 02:54:32,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:54:32,515 INFO L225 Difference]: With dead ends: 4566 [2022-11-03 02:54:32,515 INFO L226 Difference]: Without dead ends: 2523 [2022-11-03 02:54:32,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:54:32,525 INFO L413 NwaCegarLoop]: 670 mSDtfsCounter, 166 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 4 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 1199 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:54:32,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 1199 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 235 Invalid, 3 Unknown, 0 Unchecked, 9.0s Time] [2022-11-03 02:54:32,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2523 states. [2022-11-03 02:54:32,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2523 to 2508. [2022-11-03 02:54:32,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2508 states, 1617 states have (on average 1.329004329004329) internal successors, (2149), 1674 states have internal predecessors, (2149), 603 states have call successors, (603), 293 states have call predecessors, (603), 287 states have return successors, (614), 566 states have call predecessors, (614), 602 states have call successors, (614) [2022-11-03 02:54:32,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2508 states to 2508 states and 3366 transitions. [2022-11-03 02:54:32,759 INFO L78 Accepts]: Start accepts. Automaton has 2508 states and 3366 transitions. Word has length 82 [2022-11-03 02:54:32,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:54:32,759 INFO L495 AbstractCegarLoop]: Abstraction has 2508 states and 3366 transitions. [2022-11-03 02:54:32,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-03 02:54:32,760 INFO L276 IsEmpty]: Start isEmpty. Operand 2508 states and 3366 transitions. [2022-11-03 02:54:32,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-03 02:54:32,764 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:54:32,764 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2022-11-03 02:54:32,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 02:54:32,765 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:54:32,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:54:32,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1202912264, now seen corresponding path program 1 times [2022-11-03 02:54:32,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:54:32,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909322710] [2022-11-03 02:54:32,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:54:32,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:54:32,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:54:32,961 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-03 02:54:32,961 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:54:32,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909322710] [2022-11-03 02:54:32,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909322710] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:54:32,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:54:32,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:54:32,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843580574] [2022-11-03 02:54:32,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:54:32,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:54:32,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:54:32,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:54:32,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:54:32,965 INFO L87 Difference]: Start difference. First operand 2508 states and 3366 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 02:54:37,458 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:54:39,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:54:39,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:54:39,502 INFO L93 Difference]: Finished difference Result 6556 states and 8856 transitions. [2022-11-03 02:54:39,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:54:39,503 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 87 [2022-11-03 02:54:39,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:54:39,524 INFO L225 Difference]: With dead ends: 6556 [2022-11-03 02:54:39,524 INFO L226 Difference]: Without dead ends: 4059 [2022-11-03 02:54:39,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:54:39,535 INFO L413 NwaCegarLoop]: 821 mSDtfsCounter, 539 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 1350 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:54:39,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [542 Valid, 1350 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 248 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2022-11-03 02:54:39,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4059 states. [2022-11-03 02:54:39,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4059 to 4048. [2022-11-03 02:54:39,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4048 states, 2648 states have (on average 1.3417673716012084) internal successors, (3553), 2753 states have internal predecessors, (3553), 953 states have call successors, (953), 454 states have call predecessors, (953), 446 states have return successors, (976), 892 states have call predecessors, (976), 952 states have call successors, (976) [2022-11-03 02:54:39,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4048 states to 4048 states and 5482 transitions. [2022-11-03 02:54:39,944 INFO L78 Accepts]: Start accepts. Automaton has 4048 states and 5482 transitions. Word has length 87 [2022-11-03 02:54:39,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:54:39,944 INFO L495 AbstractCegarLoop]: Abstraction has 4048 states and 5482 transitions. [2022-11-03 02:54:39,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 02:54:39,946 INFO L276 IsEmpty]: Start isEmpty. Operand 4048 states and 5482 transitions. [2022-11-03 02:54:39,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-03 02:54:39,958 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:54:39,958 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2022-11-03 02:54:39,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 02:54:39,959 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:54:39,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:54:39,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1418041660, now seen corresponding path program 1 times [2022-11-03 02:54:39,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:54:39,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388785097] [2022-11-03 02:54:39,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:54:39,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:54:40,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:54:40,746 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 02:54:40,746 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:54:40,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388785097] [2022-11-03 02:54:40,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388785097] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:54:40,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108751522] [2022-11-03 02:54:40,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:54:40,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:54:40,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ee988a-6f40-45e8-9977-00e28e5df7ae/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:54:40,754 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ee988a-6f40-45e8-9977-00e28e5df7ae/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:54:40,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ee988a-6f40-45e8-9977-00e28e5df7ae/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:54:41,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:54:41,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 1363 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:54:41,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:54:41,625 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-03 02:54:41,626 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:54:41,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108751522] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:54:41,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:54:41,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-11-03 02:54:41,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716123339] [2022-11-03 02:54:41,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:54:41,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:54:41,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:54:41,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:54:41,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:54:41,631 INFO L87 Difference]: Start difference. First operand 4048 states and 5482 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 02:54:45,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:54:48,052 WARN L539 Checker$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 02:54:51,844 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:54:52,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:54:52,950 INFO L93 Difference]: Finished difference Result 7868 states and 10961 transitions. [2022-11-03 02:54:52,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:54:52,951 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 91 [2022-11-03 02:54:52,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:54:52,980 INFO L225 Difference]: With dead ends: 7868 [2022-11-03 02:54:52,980 INFO L226 Difference]: Without dead ends: 5529 [2022-11-03 02:54:52,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:54:52,990 INFO L413 NwaCegarLoop]: 762 mSDtfsCounter, 308 mSDsluCounter, 1368 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 90 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 1933 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:54:52,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 1933 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 330 Invalid, 1 Unknown, 0 Unchecked, 10.9s Time] [2022-11-03 02:54:52,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5529 states. [2022-11-03 02:54:53,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5529 to 4064. [2022-11-03 02:54:53,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4064 states, 2664 states have (on average 1.3397147147147148) internal successors, (3569), 2769 states have internal predecessors, (3569), 953 states have call successors, (953), 454 states have call predecessors, (953), 446 states have return successors, (976), 892 states have call predecessors, (976), 952 states have call successors, (976) [2022-11-03 02:54:53,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4064 states to 4064 states and 5498 transitions. [2022-11-03 02:54:53,438 INFO L78 Accepts]: Start accepts. Automaton has 4064 states and 5498 transitions. Word has length 91 [2022-11-03 02:54:53,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:54:53,438 INFO L495 AbstractCegarLoop]: Abstraction has 4064 states and 5498 transitions. [2022-11-03 02:54:53,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 02:54:53,439 INFO L276 IsEmpty]: Start isEmpty. Operand 4064 states and 5498 transitions. [2022-11-03 02:54:53,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-03 02:54:53,445 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:54:53,445 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-11-03 02:54:53,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ee988a-6f40-45e8-9977-00e28e5df7ae/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:54:53,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ee988a-6f40-45e8-9977-00e28e5df7ae/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:54:53,667 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:54:53,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:54:53,668 INFO L85 PathProgramCache]: Analyzing trace with hash 749550948, now seen corresponding path program 1 times [2022-11-03 02:54:53,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:54:53,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492135298] [2022-11-03 02:54:53,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:54:53,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:54:53,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:54:53,937 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-03 02:54:53,938 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:54:53,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492135298] [2022-11-03 02:54:53,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492135298] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:54:53,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:54:53,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:54:53,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210081228] [2022-11-03 02:54:53,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:54:53,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:54:53,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:54:53,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:54:53,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:54:53,942 INFO L87 Difference]: Start difference. First operand 4064 states and 5498 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:54:58,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:55:00,980 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 02:55:01,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:55:01,039 INFO L93 Difference]: Finished difference Result 6437 states and 8720 transitions. [2022-11-03 02:55:01,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:55:01,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 99 [2022-11-03 02:55:01,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:55:01,080 INFO L225 Difference]: With dead ends: 6437 [2022-11-03 02:55:01,080 INFO L226 Difference]: Without dead ends: 4076 [2022-11-03 02:55:01,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:55:01,091 INFO L413 NwaCegarLoop]: 541 mSDtfsCounter, 0 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1079 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:55:01,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1079 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 200 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2022-11-03 02:55:01,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4076 states. [2022-11-03 02:55:01,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4076 to 4076. [2022-11-03 02:55:01,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4076 states, 2676 states have (on average 1.3381913303437967) internal successors, (3581), 2781 states have internal predecessors, (3581), 953 states have call successors, (953), 454 states have call predecessors, (953), 446 states have return successors, (976), 892 states have call predecessors, (976), 952 states have call successors, (976) [2022-11-03 02:55:01,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4076 states to 4076 states and 5510 transitions. [2022-11-03 02:55:01,487 INFO L78 Accepts]: Start accepts. Automaton has 4076 states and 5510 transitions. Word has length 99 [2022-11-03 02:55:01,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:55:01,489 INFO L495 AbstractCegarLoop]: Abstraction has 4076 states and 5510 transitions. [2022-11-03 02:55:01,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:55:01,489 INFO L276 IsEmpty]: Start isEmpty. Operand 4076 states and 5510 transitions. [2022-11-03 02:55:01,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-03 02:55:01,496 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:55:01,496 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-11-03 02:55:01,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 02:55:01,497 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:55:01,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:55:01,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1949401661, now seen corresponding path program 1 times [2022-11-03 02:55:01,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:55:01,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824544380] [2022-11-03 02:55:01,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:55:01,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:55:01,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:55:01,870 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-03 02:55:01,871 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:55:01,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824544380] [2022-11-03 02:55:01,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824544380] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:55:01,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575882899] [2022-11-03 02:55:01,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:55:01,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:55:01,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ee988a-6f40-45e8-9977-00e28e5df7ae/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:55:01,874 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ee988a-6f40-45e8-9977-00e28e5df7ae/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:55:01,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ee988a-6f40-45e8-9977-00e28e5df7ae/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:55:02,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:55:02,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 1753 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:55:02,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:55:02,763 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-03 02:55:02,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:55:02,887 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-03 02:55:02,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575882899] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:55:02,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [829158245] [2022-11-03 02:55:02,920 INFO L159 IcfgInterpreter]: Started Sifa with 71 locations of interest [2022-11-03 02:55:02,921 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:55:02,925 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:55:02,931 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:55:02,932 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:55:04,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:05,038 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-11-03 02:55:05,355 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 28 [2022-11-03 02:55:05,674 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 46 [2022-11-03 02:55:05,737 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-03 02:55:05,913 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 85 [2022-11-03 02:55:06,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:06,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:06,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:06,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:06,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:06,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:06,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:06,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:06,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:06,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:06,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:06,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:07,015 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 78 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 107 [2022-11-03 02:55:08,487 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 397 treesize of output 321 [2022-11-03 02:55:08,568 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 55 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 34 [2022-11-03 02:55:08,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:08,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:08,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:08,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:08,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:08,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:08,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:08,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:08,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:08,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:08,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:08,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:08,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:08,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:08,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:08,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:08,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:08,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:08,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:08,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:08,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:08,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:08,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:08,706 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 24 select indices, 24 select index equivalence classes, 276 disjoint index pairs (out of 276 index pairs), introduced 24 new quantified variables, introduced 0 case distinctions, treesize of input 167 treesize of output 73 [2022-11-03 02:55:09,964 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 397 treesize of output 321 [2022-11-03 02:55:10,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:10,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:10,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:10,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:10,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:10,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:10,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:10,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:10,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:10,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:10,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:10,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:10,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:10,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:10,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:10,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:10,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:10,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:10,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:10,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:10,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:10,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:10,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:10,088 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 24 select indices, 24 select index equivalence classes, 276 disjoint index pairs (out of 276 index pairs), introduced 24 new quantified variables, introduced 0 case distinctions, treesize of input 167 treesize of output 73 [2022-11-03 02:55:10,169 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 55 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 34 [2022-11-03 02:55:46,250 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_zalloc with input of size 221 for LOIs [2022-11-03 02:55:46,471 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_malloc with input of size 649 for LOIs [2022-11-03 02:55:46,929 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:55:56,298 WARN L234 SmtUtils]: Spent 9.03s on a formula simplification that was a NOOP. DAG size: 976 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:56:16,814 WARN L234 SmtUtils]: Spent 7.90s on a formula simplification. DAG size of input: 655 DAG size of output: 652 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:56:55,974 WARN L234 SmtUtils]: Spent 37.82s on a formula simplification. DAG size of input: 928 DAG size of output: 754 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:57:26,245 WARN L234 SmtUtils]: Spent 29.15s on a formula simplification. DAG size of input: 808 DAG size of output: 765 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:57:50,578 WARN L234 SmtUtils]: Spent 12.16s on a formula simplification. DAG size of input: 784 DAG size of output: 745 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:58:20,947 WARN L234 SmtUtils]: Spent 28.37s on a formula simplification. DAG size of input: 798 DAG size of output: 755 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:58:32,419 WARN L234 SmtUtils]: Spent 10.81s on a formula simplification. DAG size of input: 801 DAG size of output: 758 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:58:43,530 WARN L234 SmtUtils]: Spent 10.42s on a formula simplification. DAG size of input: 791 DAG size of output: 748 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:58:55,422 WARN L234 SmtUtils]: Spent 11.22s on a formula simplification. DAG size of input: 821 DAG size of output: 778 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:59:20,019 WARN L234 SmtUtils]: Spent 11.99s on a formula simplification. DAG size of input: 845 DAG size of output: 786 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:59:33,383 WARN L234 SmtUtils]: Spent 12.56s on a formula simplification. DAG size of input: 849 DAG size of output: 790 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:59:34,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [829158245] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:59:34,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:59:34,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [4, 4, 4] total 38 [2022-11-03 02:59:34,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386735694] [2022-11-03 02:59:34,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:59:34,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-03 02:59:34,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:59:34,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-03 02:59:34,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1239, Unknown=0, NotChecked=0, Total=1406 [2022-11-03 02:59:34,926 INFO L87 Difference]: Start difference. First operand 4076 states and 5510 transitions. Second operand has 33 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 25 states have internal predecessors, (50), 6 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2022-11-03 02:59:54,527 WARN L234 SmtUtils]: Spent 16.51s on a formula simplification. DAG size of input: 1009 DAG size of output: 985 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:00:11,744 WARN L234 SmtUtils]: Spent 16.79s on a formula simplification. DAG size of input: 1017 DAG size of output: 993 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:00:29,397 WARN L234 SmtUtils]: Spent 17.23s on a formula simplification. DAG size of input: 1023 DAG size of output: 999 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:00:37,816 WARN L234 SmtUtils]: Spent 7.75s on a formula simplification that was a NOOP. DAG size: 980 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:00:46,353 WARN L234 SmtUtils]: Spent 8.06s on a formula simplification that was a NOOP. DAG size: 984 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:00:54,857 WARN L234 SmtUtils]: Spent 7.67s on a formula simplification that was a NOOP. DAG size: 989 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:01:08,140 WARN L234 SmtUtils]: Spent 11.58s on a formula simplification. DAG size of input: 758 DAG size of output: 660 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:01:22,105 WARN L234 SmtUtils]: Spent 12.19s on a formula simplification. DAG size of input: 768 DAG size of output: 670 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:01:49,621 WARN L234 SmtUtils]: Spent 25.96s on a formula simplification. DAG size of input: 779 DAG size of output: 760 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:02:17,036 WARN L234 SmtUtils]: Spent 25.57s on a formula simplification. DAG size of input: 779 DAG size of output: 760 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:02:40,087 WARN L234 SmtUtils]: Spent 12.84s on a formula simplification. DAG size of input: 795 DAG size of output: 756 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:02:54,564 WARN L234 SmtUtils]: Spent 13.49s on a formula simplification. DAG size of input: 798 DAG size of output: 746 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:03:26,128 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:03:29,360 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:03:32,299 WARN L539 Checker$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 03:03:35,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:03:39,544 WARN L539 Checker$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 03:03:41,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:03:43,914 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:03:51,099 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:03:58,412 WARN L539 Checker$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 03:04:02,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:04:10,651 WARN L539 Checker$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 03:04:12,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:04:13,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:04:16,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:04:18,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:04:30,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:04:33,806 WARN L539 Checker$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 03:04:36,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:04:38,707 WARN L539 Checker$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 03:04:42,264 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 03:04:43,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:04:43,761 INFO L93 Difference]: Finished difference Result 8536 states and 11587 transitions. [2022-11-03 03:04:43,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-03 03:04:43,762 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 25 states have internal predecessors, (50), 6 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 100 [2022-11-03 03:04:43,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:04:43,781 INFO L225 Difference]: With dead ends: 8536 [2022-11-03 03:04:43,781 INFO L226 Difference]: Without dead ends: 4463 [2022-11-03 03:04:43,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 839 ImplicationChecksByTransitivity, 415.9s TimeCoverageRelationStatistics Valid=282, Invalid=2580, Unknown=0, NotChecked=0, Total=2862 [2022-11-03 03:04:43,793 INFO L413 NwaCegarLoop]: 637 mSDtfsCounter, 331 mSDsluCounter, 6540 mSDsCounter, 0 mSdLazyCounter, 4194 mSolverCounterSat, 117 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 116.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 6439 SdHoareTripleChecker+Invalid, 4319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 4194 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 120.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:04:43,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 6439 Invalid, 4319 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [117 Valid, 4194 Invalid, 8 Unknown, 0 Unchecked, 120.2s Time] [2022-11-03 03:04:43,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4463 states. [2022-11-03 03:04:44,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4463 to 4322. [2022-11-03 03:04:44,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4322 states, 2906 states have (on average 1.3420509291121816) internal successors, (3900), 3014 states have internal predecessors, (3900), 961 states have call successors, (961), 458 states have call predecessors, (961), 454 states have return successors, (991), 901 states have call predecessors, (991), 960 states have call successors, (991) [2022-11-03 03:04:44,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4322 states to 4322 states and 5852 transitions. [2022-11-03 03:04:44,389 INFO L78 Accepts]: Start accepts. Automaton has 4322 states and 5852 transitions. Word has length 100 [2022-11-03 03:04:44,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:04:44,390 INFO L495 AbstractCegarLoop]: Abstraction has 4322 states and 5852 transitions. [2022-11-03 03:04:44,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 25 states have internal predecessors, (50), 6 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2022-11-03 03:04:44,390 INFO L276 IsEmpty]: Start isEmpty. Operand 4322 states and 5852 transitions. [2022-11-03 03:04:44,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-03 03:04:44,396 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:04:44,396 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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] [2022-11-03 03:04:44,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ee988a-6f40-45e8-9977-00e28e5df7ae/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 03:04:44,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ee988a-6f40-45e8-9977-00e28e5df7ae/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-03 03:04:44,611 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:04:44,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:04:44,611 INFO L85 PathProgramCache]: Analyzing trace with hash -349810610, now seen corresponding path program 1 times [2022-11-03 03:04:44,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:04:44,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759568584] [2022-11-03 03:04:44,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:04:44,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:04:44,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:04:44,912 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-03 03:04:44,912 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:04:44,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759568584] [2022-11-03 03:04:44,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759568584] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:04:44,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664959292] [2022-11-03 03:04:44,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:04:44,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:04:44,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ee988a-6f40-45e8-9977-00e28e5df7ae/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:04:44,915 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ee988a-6f40-45e8-9977-00e28e5df7ae/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:04:44,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ee988a-6f40-45e8-9977-00e28e5df7ae/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 03:04:45,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:04:45,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 1794 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:04:45,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:04:45,802 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-03 03:04:45,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:04:45,882 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-03 03:04:45,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664959292] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:04:45,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [291842259] [2022-11-03 03:04:45,891 INFO L159 IcfgInterpreter]: Started Sifa with 75 locations of interest [2022-11-03 03:04:45,892 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:04:45,894 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:04:45,895 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:04:45,895 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:04:47,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:47,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:47,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:47,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:47,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:47,539 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 44 [2022-11-03 03:04:47,789 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 46 [2022-11-03 03:04:47,848 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-03 03:04:48,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:48,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:48,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:48,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:48,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:48,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:48,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:48,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:48,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:48,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:48,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:48,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:48,820 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 78 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 107 [2022-11-03 03:04:49,050 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 85 [2022-11-03 03:04:49,662 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-11-03 03:04:49,670 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:04:49,681 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:04:50,514 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 397 treesize of output 321 [2022-11-03 03:04:50,566 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 55 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 34 [2022-11-03 03:04:50,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:50,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:50,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:50,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:50,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:50,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:50,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:50,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:50,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:50,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:50,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:50,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:50,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:50,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:50,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:50,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:50,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:50,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:50,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:50,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:50,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:50,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:50,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:50,667 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 24 select indices, 24 select index equivalence classes, 276 disjoint index pairs (out of 276 index pairs), introduced 24 new quantified variables, introduced 0 case distinctions, treesize of input 167 treesize of output 73 [2022-11-03 03:04:52,114 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 397 treesize of output 321 [2022-11-03 03:04:52,168 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 55 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 34 [2022-11-03 03:04:52,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:52,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:52,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:52,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:52,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:52,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:52,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:52,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:52,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:52,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:52,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:52,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:52,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:52,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:52,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:52,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:52,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:52,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:52,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:52,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:52,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:52,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:52,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:04:52,289 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 24 select indices, 24 select index equivalence classes, 276 disjoint index pairs (out of 276 index pairs), introduced 24 new quantified variables, introduced 0 case distinctions, treesize of input 167 treesize of output 73 [2022-11-03 03:04:58,916 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 03:04:59,029 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-03 03:04:59,150 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 03:05:04,382 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 03:05:04,486 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-03 03:05:04,681 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 03:05:14,279 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_zalloc with input of size 1103 for LOIs [2022-11-03 03:05:18,072 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:05:19,194 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-11-03 03:05:20,149 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:06:47,916 WARN L234 SmtUtils]: Spent 1.42m on a formula simplification. DAG size of input: 328 DAG size of output: 219 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-03 03:06:47,917 INFO L356 Elim1Store]: treesize reduction 360, result has 47.4 percent of original size [2022-11-03 03:06:47,919 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 36 select indices, 36 select index equivalence classes, 631 disjoint index pairs (out of 630 index pairs), introduced 37 new quantified variables, introduced 36 case distinctions, treesize of input 2698 treesize of output 2953 [2022-11-03 03:06:48,273 INFO L244 Elim1Store]: Index analysis took 106 ms