./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hid--usbhid--usbhid.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_ed1d3dba-a12d-4f09-bbe3-7b77d65127e6/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1d3dba-a12d-4f09-bbe3-7b77d65127e6/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_ed1d3dba-a12d-4f09-bbe3-7b77d65127e6/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1d3dba-a12d-4f09-bbe3-7b77d65127e6/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hid--usbhid--usbhid.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1d3dba-a12d-4f09-bbe3-7b77d65127e6/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_ed1d3dba-a12d-4f09-bbe3-7b77d65127e6/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 ce994d1a73c37780cf760e0a26dafcaa4c1158119509e83a0962528ef5890c5e --- 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 01:50:58,612 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:50:58,613 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:50:58,651 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:50:58,651 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:50:58,655 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:50:58,657 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:50:58,661 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:50:58,663 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:50:58,671 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:50:58,672 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:50:58,674 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:50:58,674 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:50:58,677 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:50:58,679 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:50:58,680 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:50:58,682 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:50:58,683 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:50:58,684 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:50:58,691 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:50:58,693 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:50:58,695 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:50:58,698 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:50:58,698 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:50:58,706 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:50:58,707 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:50:58,707 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:50:58,709 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:50:58,709 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:50:58,710 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:50:58,711 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:50:58,712 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:50:58,714 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:50:58,715 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:50:58,716 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:50:58,716 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:50:58,717 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:50:58,717 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:50:58,717 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:50:58,718 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:50:58,718 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:50:58,720 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1d3dba-a12d-4f09-bbe3-7b77d65127e6/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 01:50:58,759 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:50:58,763 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:50:58,763 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:50:58,764 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:50:58,764 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:50:58,765 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:50:58,765 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:50:58,765 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:50:58,765 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:50:58,765 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:50:58,766 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:50:58,767 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:50:58,767 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:50:58,767 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:50:58,767 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:50:58,768 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:50:58,768 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:50:58,768 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:50:58,769 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:50:58,769 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:50:58,769 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:50:58,769 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:50:58,769 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:50:58,770 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:50:58,770 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:50:58,770 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:50:58,772 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:50:58,772 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:50:58,772 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:50:58,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:50:58,773 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:50:58,773 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:50:58,773 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:50:58,773 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:50:58,774 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:50:58,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:50:58,774 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:50:58,774 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:50:58,774 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_ed1d3dba-a12d-4f09-bbe3-7b77d65127e6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1d3dba-a12d-4f09-bbe3-7b77d65127e6/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce994d1a73c37780cf760e0a26dafcaa4c1158119509e83a0962528ef5890c5e [2022-11-03 01:50:59,015 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:50:59,035 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:50:59,061 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:50:59,062 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:50:59,063 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:50:59,064 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1d3dba-a12d-4f09-bbe3-7b77d65127e6/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hid--usbhid--usbhid.ko-entry_point.cil.out.i [2022-11-03 01:50:59,134 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1d3dba-a12d-4f09-bbe3-7b77d65127e6/bin/utaipan-7li7fVZpFI/data/6cabdc865/c79a3d4140384140b9b33d69b41c1ed5/FLAGbaa828832 [2022-11-03 01:51:00,078 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:51:00,079 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1d3dba-a12d-4f09-bbe3-7b77d65127e6/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hid--usbhid--usbhid.ko-entry_point.cil.out.i [2022-11-03 01:51:00,148 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1d3dba-a12d-4f09-bbe3-7b77d65127e6/bin/utaipan-7li7fVZpFI/data/6cabdc865/c79a3d4140384140b9b33d69b41c1ed5/FLAGbaa828832 [2022-11-03 01:51:00,433 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1d3dba-a12d-4f09-bbe3-7b77d65127e6/bin/utaipan-7li7fVZpFI/data/6cabdc865/c79a3d4140384140b9b33d69b41c1ed5 [2022-11-03 01:51:00,436 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:51:00,438 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:51:00,443 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:51:00,443 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:51:00,447 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:51:00,449 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:51:00" (1/1) ... [2022-11-03 01:51:00,450 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@758a3020 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:51:00, skipping insertion in model container [2022-11-03 01:51:00,451 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:51:00" (1/1) ... [2022-11-03 01:51:00,459 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:51:00,670 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:51:03,611 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_ed1d3dba-a12d-4f09-bbe3-7b77d65127e6/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hid--usbhid--usbhid.ko-entry_point.cil.out.i[374492,374505] [2022-11-03 01:51:03,903 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:51:03,937 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:51:04,526 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_ed1d3dba-a12d-4f09-bbe3-7b77d65127e6/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hid--usbhid--usbhid.ko-entry_point.cil.out.i[374492,374505] [2022-11-03 01:51:04,546 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:51:04,778 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:51:04,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:51:04 WrapperNode [2022-11-03 01:51:04,779 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:51:04,781 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:51:04,781 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:51:04,781 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:51:04,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:51:04" (1/1) ... [2022-11-03 01:51:04,932 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:51:04" (1/1) ... [2022-11-03 01:51:05,200 INFO L138 Inliner]: procedures = 495, calls = 4443, calls flagged for inlining = 161, calls inlined = 145, statements flattened = 7921 [2022-11-03 01:51:05,201 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:51:05,202 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:51:05,202 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:51:05,203 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:51:05,212 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:51:04" (1/1) ... [2022-11-03 01:51:05,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:51:04" (1/1) ... [2022-11-03 01:51:05,267 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:51:04" (1/1) ... [2022-11-03 01:51:05,268 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:51:04" (1/1) ... [2022-11-03 01:51:05,462 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:51:04" (1/1) ... [2022-11-03 01:51:05,505 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:51:04" (1/1) ... [2022-11-03 01:51:05,548 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:51:04" (1/1) ... [2022-11-03 01:51:05,581 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:51:04" (1/1) ... [2022-11-03 01:51:05,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:51:05,628 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:51:05,628 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:51:05,628 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:51:05,629 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:51:04" (1/1) ... [2022-11-03 01:51:05,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:51:05,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1d3dba-a12d-4f09-bbe3-7b77d65127e6/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:51:05,657 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1d3dba-a12d-4f09-bbe3-7b77d65127e6/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:51:05,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1d3dba-a12d-4f09-bbe3-7b77d65127e6/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:51:05,704 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-11-03 01:51:05,704 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-11-03 01:51:05,704 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-11-03 01:51:05,704 INFO L130 BoogieDeclarations]: Found specification of procedure pidff_request_effect_upload [2022-11-03 01:51:05,704 INFO L138 BoogieDeclarations]: Found implementation of procedure pidff_request_effect_upload [2022-11-03 01:51:05,705 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 01:51:05,705 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 01:51:05,705 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2022-11-03 01:51:05,705 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2022-11-03 01:51:05,706 INFO L130 BoogieDeclarations]: Found specification of procedure pidff_playback_pid [2022-11-03 01:51:05,706 INFO L138 BoogieDeclarations]: Found implementation of procedure pidff_playback_pid [2022-11-03 01:51:05,706 INFO L130 BoogieDeclarations]: Found specification of procedure pidff_find_special_field [2022-11-03 01:51:05,706 INFO L138 BoogieDeclarations]: Found implementation of procedure pidff_find_special_field [2022-11-03 01:51:05,706 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 01:51:05,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 01:51:05,707 INFO L130 BoogieDeclarations]: Found specification of procedure hid_reset [2022-11-03 01:51:05,707 INFO L138 BoogieDeclarations]: Found implementation of procedure hid_reset [2022-11-03 01:51:05,707 INFO L130 BoogieDeclarations]: Found specification of procedure usb_block_urb [2022-11-03 01:51:05,707 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_block_urb [2022-11-03 01:51:05,707 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2022-11-03 01:51:05,708 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2022-11-03 01:51:05,708 INFO L130 BoogieDeclarations]: Found specification of procedure pidff_check_usage [2022-11-03 01:51:05,708 INFO L138 BoogieDeclarations]: Found implementation of procedure pidff_check_usage [2022-11-03 01:51:05,708 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_get_interface [2022-11-03 01:51:05,708 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_get_interface [2022-11-03 01:51:05,709 INFO L130 BoogieDeclarations]: Found specification of procedure __usb_get_extra_descriptor [2022-11-03 01:51:05,709 INFO L138 BoogieDeclarations]: Found implementation of procedure __usb_get_extra_descriptor [2022-11-03 01:51:05,709 INFO L130 BoogieDeclarations]: Found specification of procedure usbhid_init_reports [2022-11-03 01:51:05,709 INFO L138 BoogieDeclarations]: Found implementation of procedure usbhid_init_reports [2022-11-03 01:51:05,709 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2022-11-03 01:51:05,709 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2022-11-03 01:51:05,710 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-03 01:51:05,710 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-03 01:51:05,710 INFO L130 BoogieDeclarations]: Found specification of procedure hid_suspend [2022-11-03 01:51:05,711 INFO L138 BoogieDeclarations]: Found implementation of procedure hid_suspend [2022-11-03 01:51:05,711 INFO L130 BoogieDeclarations]: Found specification of procedure pidff_erase_pid [2022-11-03 01:51:05,711 INFO L138 BoogieDeclarations]: Found implementation of procedure pidff_erase_pid [2022-11-03 01:51:05,711 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 01:51:05,711 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 01:51:05,711 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-03 01:51:05,712 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unpoison_urb [2022-11-03 01:51:05,712 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unpoison_urb [2022-11-03 01:51:05,712 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2022-11-03 01:51:05,712 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2022-11-03 01:51:05,713 INFO L130 BoogieDeclarations]: Found specification of procedure hiddev_devnode [2022-11-03 01:51:05,713 INFO L138 BoogieDeclarations]: Found implementation of procedure hiddev_devnode [2022-11-03 01:51:05,713 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 01:51:05,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 01:51:05,714 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-03 01:51:05,715 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-03 01:51:05,715 INFO L130 BoogieDeclarations]: Found specification of procedure hid_submit_out [2022-11-03 01:51:05,715 INFO L138 BoogieDeclarations]: Found implementation of procedure hid_submit_out [2022-11-03 01:51:05,716 INFO L130 BoogieDeclarations]: Found specification of procedure hid_resume_common [2022-11-03 01:51:05,716 INFO L138 BoogieDeclarations]: Found implementation of procedure hid_resume_common [2022-11-03 01:51:05,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 01:51:05,716 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_thread_lock_of_hiddev_list [2022-11-03 01:51:05,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_thread_lock_of_hiddev_list [2022-11-03 01:51:05,716 INFO L130 BoogieDeclarations]: Found specification of procedure hid_output_report [2022-11-03 01:51:05,717 INFO L138 BoogieDeclarations]: Found implementation of procedure hid_output_report [2022-11-03 01:51:05,717 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2022-11-03 01:51:05,717 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2022-11-03 01:51:05,718 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-03 01:51:05,718 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-03 01:51:05,718 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-03 01:51:05,718 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-03 01:51:05,718 INFO L130 BoogieDeclarations]: Found specification of procedure usbhid_power [2022-11-03 01:51:05,719 INFO L138 BoogieDeclarations]: Found implementation of procedure usbhid_power [2022-11-03 01:51:05,719 INFO L130 BoogieDeclarations]: Found specification of procedure hid_free_buffers [2022-11-03 01:51:05,719 INFO L138 BoogieDeclarations]: Found implementation of procedure hid_free_buffers [2022-11-03 01:51:05,719 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-03 01:51:05,719 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-03 01:51:05,719 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 01:51:05,720 INFO L130 BoogieDeclarations]: Found specification of procedure hid_pidff_init [2022-11-03 01:51:05,720 INFO L138 BoogieDeclarations]: Found implementation of procedure hid_pidff_init [2022-11-03 01:51:05,720 INFO L130 BoogieDeclarations]: Found specification of procedure hid_find_max_report [2022-11-03 01:51:05,721 INFO L138 BoogieDeclarations]: Found implementation of procedure hid_find_max_report [2022-11-03 01:51:05,721 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_existancelock_of_hiddev [2022-11-03 01:51:05,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_existancelock_of_hiddev [2022-11-03 01:51:05,721 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-03 01:51:05,721 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-03 01:51:05,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 01:51:05,722 INFO L130 BoogieDeclarations]: Found specification of procedure pidff_autocenter [2022-11-03 01:51:05,723 INFO L138 BoogieDeclarations]: Found implementation of procedure pidff_autocenter [2022-11-03 01:51:05,723 INFO L130 BoogieDeclarations]: Found specification of procedure usbhid_request [2022-11-03 01:51:05,723 INFO L138 BoogieDeclarations]: Found implementation of procedure usbhid_request [2022-11-03 01:51:05,723 INFO L130 BoogieDeclarations]: Found specification of procedure hiddev_ioctl [2022-11-03 01:51:05,723 INFO L138 BoogieDeclarations]: Found implementation of procedure hiddev_ioctl [2022-11-03 01:51:05,723 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface [2022-11-03 01:51:05,724 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface [2022-11-03 01:51:05,724 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 01:51:05,725 INFO L130 BoogieDeclarations]: Found specification of procedure hid_submit_ctrl [2022-11-03 01:51:05,725 INFO L138 BoogieDeclarations]: Found implementation of procedure hid_submit_ctrl [2022-11-03 01:51:05,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 01:51:05,726 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 01:51:05,726 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-03 01:51:05,726 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-03 01:51:05,726 INFO L130 BoogieDeclarations]: Found specification of procedure usbhid_idle [2022-11-03 01:51:05,726 INFO L138 BoogieDeclarations]: Found implementation of procedure usbhid_idle [2022-11-03 01:51:05,727 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2022-11-03 01:51:05,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2022-11-03 01:51:05,727 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2022-11-03 01:51:05,727 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2022-11-03 01:51:05,727 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-03 01:51:05,728 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-03 01:51:05,728 INFO L130 BoogieDeclarations]: Found specification of procedure usbhid_restart_out_queue [2022-11-03 01:51:05,728 INFO L138 BoogieDeclarations]: Found implementation of procedure usbhid_restart_out_queue [2022-11-03 01:51:05,728 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-03 01:51:05,728 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-03 01:51:05,729 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_thread_lock_of_hiddev_list [2022-11-03 01:51:05,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_thread_lock_of_hiddev_list [2022-11-03 01:51:05,730 INFO L130 BoogieDeclarations]: Found specification of procedure usbhid_parse [2022-11-03 01:51:05,732 INFO L138 BoogieDeclarations]: Found implementation of procedure usbhid_parse [2022-11-03 01:51:05,733 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface_async [2022-11-03 01:51:05,733 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface_async [2022-11-03 01:51:05,733 INFO L130 BoogieDeclarations]: Found specification of procedure usbhid_wait_io [2022-11-03 01:51:05,734 INFO L138 BoogieDeclarations]: Found implementation of procedure usbhid_wait_io [2022-11-03 01:51:05,734 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-03 01:51:05,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-03 01:51:05,736 INFO L130 BoogieDeclarations]: Found specification of procedure usbhid_put_power [2022-11-03 01:51:05,736 INFO L138 BoogieDeclarations]: Found implementation of procedure usbhid_put_power [2022-11-03 01:51:05,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 01:51:05,743 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_2 [2022-11-03 01:51:05,744 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_2 [2022-11-03 01:51:05,744 INFO L130 BoogieDeclarations]: Found specification of procedure hiddev_poll [2022-11-03 01:51:05,744 INFO L138 BoogieDeclarations]: Found implementation of procedure hiddev_poll [2022-11-03 01:51:05,744 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:51:05,744 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 01:51:05,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 01:51:05,745 INFO L130 BoogieDeclarations]: Found specification of procedure pidff_check_autocenter [2022-11-03 01:51:05,745 INFO L138 BoogieDeclarations]: Found implementation of procedure pidff_check_autocenter [2022-11-03 01:51:05,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 01:51:05,745 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-03 01:51:05,745 INFO L130 BoogieDeclarations]: Found specification of procedure hid_cease_io [2022-11-03 01:51:05,745 INFO L138 BoogieDeclarations]: Found implementation of procedure hid_cease_io [2022-11-03 01:51:05,745 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-11-03 01:51:05,746 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-11-03 01:51:05,746 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-03 01:51:05,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-03 01:51:05,746 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2022-11-03 01:51:05,746 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2022-11-03 01:51:05,746 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_hid_open_mut [2022-11-03 01:51:05,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_hid_open_mut [2022-11-03 01:51:05,747 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-11-03 01:51:05,747 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-11-03 01:51:05,747 INFO L130 BoogieDeclarations]: Found specification of procedure hid_hw_wait [2022-11-03 01:51:05,747 INFO L138 BoogieDeclarations]: Found implementation of procedure hid_hw_wait [2022-11-03 01:51:05,747 INFO L130 BoogieDeclarations]: Found specification of procedure pidff_find_special_keys [2022-11-03 01:51:05,747 INFO L138 BoogieDeclarations]: Found implementation of procedure pidff_find_special_keys [2022-11-03 01:51:05,748 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 01:51:05,748 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 01:51:05,748 INFO L130 BoogieDeclarations]: Found specification of procedure hid_start_in [2022-11-03 01:51:05,748 INFO L138 BoogieDeclarations]: Found implementation of procedure hid_start_in [2022-11-03 01:51:05,748 INFO L130 BoogieDeclarations]: Found specification of procedure down_write [2022-11-03 01:51:05,748 INFO L138 BoogieDeclarations]: Found implementation of procedure down_write [2022-11-03 01:51:05,749 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-11-03 01:51:05,749 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-11-03 01:51:05,749 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-03 01:51:05,749 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-03 01:51:05,749 INFO L130 BoogieDeclarations]: Found specification of procedure hiddev_fasync [2022-11-03 01:51:05,749 INFO L138 BoogieDeclarations]: Found implementation of procedure hiddev_fasync [2022-11-03 01:51:05,750 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-11-03 01:51:05,750 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-11-03 01:51:05,750 INFO L130 BoogieDeclarations]: Found specification of procedure hid_io_error [2022-11-03 01:51:05,750 INFO L138 BoogieDeclarations]: Found implementation of procedure hid_io_error [2022-11-03 01:51:05,750 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2022-11-03 01:51:05,750 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2022-11-03 01:51:05,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:51:05,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:51:05,751 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-03 01:51:05,751 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-03 01:51:05,751 INFO L130 BoogieDeclarations]: Found specification of procedure hid_hw_request [2022-11-03 01:51:05,751 INFO L138 BoogieDeclarations]: Found implementation of procedure hid_hw_request [2022-11-03 01:51:05,752 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-11-03 01:51:05,752 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-11-03 01:51:05,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 01:51:05,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 01:51:05,752 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 01:51:05,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 01:51:05,752 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-03 01:51:05,753 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-03 01:51:05,753 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_7 [2022-11-03 01:51:05,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_7 [2022-11-03 01:51:05,753 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_existancelock_of_hiddev [2022-11-03 01:51:05,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_existancelock_of_hiddev [2022-11-03 01:51:05,753 INFO L130 BoogieDeclarations]: Found specification of procedure strlcat [2022-11-03 01:51:05,754 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcat [2022-11-03 01:51:05,754 INFO L130 BoogieDeclarations]: Found specification of procedure hid_cancel_delayed_stuff [2022-11-03 01:51:05,754 INFO L138 BoogieDeclarations]: Found implementation of procedure hid_cancel_delayed_stuff [2022-11-03 01:51:05,754 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_hid_open_mut [2022-11-03 01:51:05,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_hid_open_mut [2022-11-03 01:51:05,754 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 01:51:05,755 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 01:51:05,755 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 01:51:05,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 01:51:05,755 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface_no_suspend [2022-11-03 01:51:05,755 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface_no_suspend [2022-11-03 01:51:05,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 01:51:05,756 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 01:51:05,756 INFO L130 BoogieDeclarations]: Found specification of procedure hiddev_lookup_report [2022-11-03 01:51:05,756 INFO L138 BoogieDeclarations]: Found implementation of procedure hiddev_lookup_report [2022-11-03 01:51:05,756 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 01:51:05,756 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 01:51:05,756 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_get_interface_no_resume [2022-11-03 01:51:05,757 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_get_interface_no_resume [2022-11-03 01:51:05,757 INFO L130 BoogieDeclarations]: Found specification of procedure usbhid_output_report [2022-11-03 01:51:05,757 INFO L138 BoogieDeclarations]: Found implementation of procedure usbhid_output_report [2022-11-03 01:51:05,757 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-03 01:51:05,757 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-03 01:51:05,757 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_2 [2022-11-03 01:51:05,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_2 [2022-11-03 01:51:05,758 INFO L130 BoogieDeclarations]: Found specification of procedure usbhid_disconnect [2022-11-03 01:51:05,758 INFO L138 BoogieDeclarations]: Found implementation of procedure usbhid_disconnect [2022-11-03 01:51:05,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 01:51:05,758 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-03 01:51:05,758 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-03 01:51:05,758 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unlink_urb [2022-11-03 01:51:05,759 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unlink_urb [2022-11-03 01:51:05,759 INFO L130 BoogieDeclarations]: Found specification of procedure usbhid_submit_report [2022-11-03 01:51:05,759 INFO L138 BoogieDeclarations]: Found implementation of procedure usbhid_submit_report [2022-11-03 01:51:05,759 INFO L130 BoogieDeclarations]: Found specification of procedure usbhid_mark_busy [2022-11-03 01:51:05,759 INFO L138 BoogieDeclarations]: Found implementation of procedure usbhid_mark_busy [2022-11-03 01:51:05,759 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 01:51:05,760 INFO L130 BoogieDeclarations]: Found specification of procedure hid_set_idle [2022-11-03 01:51:05,760 INFO L138 BoogieDeclarations]: Found implementation of procedure hid_set_idle [2022-11-03 01:51:05,760 INFO L130 BoogieDeclarations]: Found specification of procedure hid_destroy_device [2022-11-03 01:51:05,760 INFO L138 BoogieDeclarations]: Found implementation of procedure hid_destroy_device [2022-11-03 01:51:05,760 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2022-11-03 01:51:05,760 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2022-11-03 01:51:05,761 INFO L130 BoogieDeclarations]: Found specification of procedure usbhid_open [2022-11-03 01:51:05,761 INFO L138 BoogieDeclarations]: Found implementation of procedure usbhid_open [2022-11-03 01:51:05,761 INFO L130 BoogieDeclarations]: Found specification of procedure up_write [2022-11-03 01:51:05,761 INFO L138 BoogieDeclarations]: Found implementation of procedure up_write [2022-11-03 01:51:05,761 INFO L130 BoogieDeclarations]: Found specification of procedure pidff_rescale [2022-11-03 01:51:05,761 INFO L138 BoogieDeclarations]: Found implementation of procedure pidff_rescale [2022-11-03 01:51:05,762 INFO L130 BoogieDeclarations]: Found specification of procedure pidff_set [2022-11-03 01:51:05,762 INFO L138 BoogieDeclarations]: Found implementation of procedure pidff_set [2022-11-03 01:51:05,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 01:51:05,763 INFO L130 BoogieDeclarations]: Found specification of procedure hid_reset_resume [2022-11-03 01:51:05,766 INFO L138 BoogieDeclarations]: Found implementation of procedure hid_reset_resume [2022-11-03 01:51:05,767 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-03 01:51:05,767 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-03 01:51:05,767 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-03 01:51:05,767 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-03 01:51:05,767 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2022-11-03 01:51:05,767 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2022-11-03 01:51:05,768 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-03 01:51:05,768 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-03 01:51:05,769 INFO L130 BoogieDeclarations]: Found specification of procedure usbhid_close [2022-11-03 01:51:05,769 INFO L138 BoogieDeclarations]: Found implementation of procedure usbhid_close [2022-11-03 01:51:05,769 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-11-03 01:51:05,769 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-11-03 01:51:05,769 INFO L130 BoogieDeclarations]: Found specification of procedure hid_alloc_report_buf [2022-11-03 01:51:05,769 INFO L138 BoogieDeclarations]: Found implementation of procedure hid_alloc_report_buf [2022-11-03 01:51:05,769 INFO L130 BoogieDeclarations]: Found specification of procedure pidff_find_reports [2022-11-03 01:51:05,770 INFO L138 BoogieDeclarations]: Found implementation of procedure pidff_find_reports [2022-11-03 01:51:05,770 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-03 01:51:05,770 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-03 01:51:05,770 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_get_interface_async [2022-11-03 01:51:05,770 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_get_interface_async [2022-11-03 01:51:05,770 INFO L130 BoogieDeclarations]: Found specification of procedure pidff_find_fields [2022-11-03 01:51:05,771 INFO L138 BoogieDeclarations]: Found implementation of procedure pidff_find_fields [2022-11-03 01:51:05,771 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-11-03 01:51:05,771 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-11-03 01:51:05,771 INFO L130 BoogieDeclarations]: Found specification of procedure hiddev_write [2022-11-03 01:51:05,771 INFO L138 BoogieDeclarations]: Found implementation of procedure hiddev_write [2022-11-03 01:51:05,771 INFO L130 BoogieDeclarations]: Found specification of procedure usbhid_quirks_exit [2022-11-03 01:51:05,771 INFO L138 BoogieDeclarations]: Found implementation of procedure usbhid_quirks_exit [2022-11-03 01:51:05,772 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-03 01:51:05,772 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-03 01:51:05,772 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-03 01:51:05,772 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-03 01:51:05,772 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_2 [2022-11-03 01:51:05,772 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_2 [2022-11-03 01:51:05,773 INFO L130 BoogieDeclarations]: Found specification of procedure usbhid_restart_queues [2022-11-03 01:51:05,773 INFO L138 BoogieDeclarations]: Found implementation of procedure usbhid_restart_queues [2022-11-03 01:51:05,773 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2022-11-03 01:51:05,773 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2022-11-03 01:51:05,774 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 01:51:05,774 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 01:51:05,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 01:51:05,775 INFO L130 BoogieDeclarations]: Found specification of procedure hid_device_io_stop [2022-11-03 01:51:05,775 INFO L138 BoogieDeclarations]: Found implementation of procedure hid_device_io_stop [2022-11-03 01:51:05,775 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-11-03 01:51:05,775 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-11-03 01:51:05,775 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 01:51:05,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 01:51:05,776 INFO L130 BoogieDeclarations]: Found specification of procedure usbhid_restart_ctrl_queue [2022-11-03 01:51:05,776 INFO L138 BoogieDeclarations]: Found implementation of procedure usbhid_restart_ctrl_queue [2022-11-03 01:51:05,776 INFO L130 BoogieDeclarations]: Found specification of procedure usbhid_start [2022-11-03 01:51:05,776 INFO L138 BoogieDeclarations]: Found implementation of procedure usbhid_start [2022-11-03 01:51:05,776 INFO L130 BoogieDeclarations]: Found specification of procedure pidff_reset [2022-11-03 01:51:05,776 INFO L138 BoogieDeclarations]: Found implementation of procedure pidff_reset [2022-11-03 01:51:05,777 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-03 01:51:05,777 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-03 01:51:05,777 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-03 01:51:05,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-03 01:51:05,777 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-03 01:51:05,777 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-03 01:51:05,777 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2022-11-03 01:51:05,778 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2022-11-03 01:51:05,778 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-03 01:51:05,778 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-03 01:51:05,778 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-03 01:51:05,778 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-03 01:51:05,778 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-11-03 01:51:05,778 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-11-03 01:51:05,779 INFO L130 BoogieDeclarations]: Found specification of procedure usbhid_lookup_quirk [2022-11-03 01:51:05,779 INFO L138 BoogieDeclarations]: Found implementation of procedure usbhid_lookup_quirk [2022-11-03 01:51:05,779 INFO L130 BoogieDeclarations]: Found specification of procedure hid_post_reset [2022-11-03 01:51:05,779 INFO L138 BoogieDeclarations]: Found implementation of procedure hid_post_reset [2022-11-03 01:51:05,779 INFO L130 BoogieDeclarations]: Found specification of procedure usbhid_raw_request [2022-11-03 01:51:05,779 INFO L138 BoogieDeclarations]: Found implementation of procedure usbhid_raw_request [2022-11-03 01:51:05,780 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-03 01:51:05,780 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-03 01:51:05,780 INFO L130 BoogieDeclarations]: Found specification of procedure usbhid_get_power [2022-11-03 01:51:05,780 INFO L138 BoogieDeclarations]: Found implementation of procedure usbhid_get_power [2022-11-03 01:51:05,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 01:51:05,780 INFO L130 BoogieDeclarations]: Found specification of procedure usb_string [2022-11-03 01:51:05,780 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_string [2022-11-03 01:51:05,781 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2022-11-03 01:51:05,781 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2022-11-03 01:51:05,781 INFO L130 BoogieDeclarations]: Found specification of procedure hid_resume [2022-11-03 01:51:05,781 INFO L138 BoogieDeclarations]: Found implementation of procedure hid_resume [2022-11-03 01:51:05,781 INFO L130 BoogieDeclarations]: Found specification of procedure hid_get_class_descriptor [2022-11-03 01:51:05,781 INFO L138 BoogieDeclarations]: Found implementation of procedure hid_get_class_descriptor [2022-11-03 01:51:06,885 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:51:06,889 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:51:07,345 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 01:51:24,504 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:51:26,743 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:51:26,743 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 01:51:26,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:51:26 BoogieIcfgContainer [2022-11-03 01:51:26,751 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:51:26,753 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:51:26,754 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:51:26,757 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:51:26,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:51:00" (1/3) ... [2022-11-03 01:51:26,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a259e2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:51:26, skipping insertion in model container [2022-11-03 01:51:26,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:51:04" (2/3) ... [2022-11-03 01:51:26,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a259e2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:51:26, skipping insertion in model container [2022-11-03 01:51:26,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:51:26" (3/3) ... [2022-11-03 01:51:26,760 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--hid--usbhid--usbhid.ko-entry_point.cil.out.i [2022-11-03 01:51:26,779 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:51:26,780 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 01:51:26,890 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:51:26,900 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;@3fb92e71, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:51:26,900 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 01:51:26,911 INFO L276 IsEmpty]: Start isEmpty. Operand has 2237 states, 1381 states have (on average 1.3707458363504708) internal successors, (1893), 1452 states have internal predecessors, (1893), 702 states have call successors, (702), 153 states have call predecessors, (702), 152 states have return successors, (693), 688 states have call predecessors, (693), 693 states have call successors, (693) [2022-11-03 01:51:26,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-03 01:51:26,946 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:26,947 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:51:26,948 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:26,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:26,953 INFO L85 PathProgramCache]: Analyzing trace with hash -876992872, now seen corresponding path program 1 times [2022-11-03 01:51:26,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:51:26,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966754631] [2022-11-03 01:51:26,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:26,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:51:27,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:28,253 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2022-11-03 01:51:28,253 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:51:28,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966754631] [2022-11-03 01:51:28,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966754631] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:51:28,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:51:28,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:51:28,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198698120] [2022-11-03 01:51:28,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:51:28,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:51:28,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:51:28,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:51:28,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:51:28,301 INFO L87 Difference]: Start difference. First operand has 2237 states, 1381 states have (on average 1.3707458363504708) internal successors, (1893), 1452 states have internal predecessors, (1893), 702 states have call successors, (702), 153 states have call predecessors, (702), 152 states have return successors, (693), 688 states have call predecessors, (693), 693 states have call successors, (693) Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-11-03 01:51:30,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:51:35,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:35,088 INFO L93 Difference]: Finished difference Result 6438 states and 9541 transitions. [2022-11-03 01:51:35,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:51:35,090 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 167 [2022-11-03 01:51:35,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:35,135 INFO L225 Difference]: With dead ends: 6438 [2022-11-03 01:51:35,135 INFO L226 Difference]: Without dead ends: 4209 [2022-11-03 01:51:35,151 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 01:51:35,154 INFO L413 NwaCegarLoop]: 3667 mSDtfsCounter, 2888 mSDsluCounter, 3142 mSDsCounter, 0 mSdLazyCounter, 807 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2888 SdHoareTripleChecker+Valid, 6483 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 807 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:35,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2888 Valid, 6483 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 807 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2022-11-03 01:51:35,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4209 states. [2022-11-03 01:51:35,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4209 to 4186. [2022-11-03 01:51:35,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4186 states, 2596 states have (on average 1.358628659476117) internal successors, (3527), 2702 states have internal predecessors, (3527), 1293 states have call successors, (1293), 297 states have call predecessors, (1293), 296 states have return successors, (1281), 1270 states have call predecessors, (1281), 1281 states have call successors, (1281) [2022-11-03 01:51:35,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4186 states to 4186 states and 6101 transitions. [2022-11-03 01:51:35,465 INFO L78 Accepts]: Start accepts. Automaton has 4186 states and 6101 transitions. Word has length 167 [2022-11-03 01:51:35,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:35,470 INFO L495 AbstractCegarLoop]: Abstraction has 4186 states and 6101 transitions. [2022-11-03 01:51:35,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-11-03 01:51:35,471 INFO L276 IsEmpty]: Start isEmpty. Operand 4186 states and 6101 transitions. [2022-11-03 01:51:35,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-03 01:51:35,489 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:35,489 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:51:35,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 01:51:35,490 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:35,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:35,491 INFO L85 PathProgramCache]: Analyzing trace with hash -369317837, now seen corresponding path program 1 times [2022-11-03 01:51:35,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:51:35,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431796712] [2022-11-03 01:51:35,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:35,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:51:35,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:36,469 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2022-11-03 01:51:36,470 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:51:36,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431796712] [2022-11-03 01:51:36,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431796712] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:51:36,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:51:36,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:51:36,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528596991] [2022-11-03 01:51:36,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:51:36,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:51:36,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:51:36,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:51:36,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:51:36,477 INFO L87 Difference]: Start difference. First operand 4186 states and 6101 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, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-11-03 01:51:37,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:51:39,544 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:51:44,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:44,217 INFO L93 Difference]: Finished difference Result 9276 states and 13676 transitions. [2022-11-03 01:51:44,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:51:44,218 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, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 171 [2022-11-03 01:51:44,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:44,251 INFO L225 Difference]: With dead ends: 9276 [2022-11-03 01:51:44,251 INFO L226 Difference]: Without dead ends: 5121 [2022-11-03 01:51:44,269 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 01:51:44,270 INFO L413 NwaCegarLoop]: 3558 mSDtfsCounter, 551 mSDsluCounter, 3370 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 6600 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:44,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 6600 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 702 Invalid, 1 Unknown, 0 Unchecked, 7.5s Time] [2022-11-03 01:51:44,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5121 states. [2022-11-03 01:51:44,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5121 to 4186. [2022-11-03 01:51:44,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4186 states, 2596 states have (on average 1.3578582434514639) internal successors, (3525), 2700 states have internal predecessors, (3525), 1293 states have call successors, (1293), 297 states have call predecessors, (1293), 296 states have return successors, (1281), 1270 states have call predecessors, (1281), 1281 states have call successors, (1281) [2022-11-03 01:51:44,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4186 states to 4186 states and 6099 transitions. [2022-11-03 01:51:44,491 INFO L78 Accepts]: Start accepts. Automaton has 4186 states and 6099 transitions. Word has length 171 [2022-11-03 01:51:44,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:44,493 INFO L495 AbstractCegarLoop]: Abstraction has 4186 states and 6099 transitions. [2022-11-03 01:51:44,493 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, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-11-03 01:51:44,494 INFO L276 IsEmpty]: Start isEmpty. Operand 4186 states and 6099 transitions. [2022-11-03 01:51:44,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-11-03 01:51:44,498 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:44,498 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:51:44,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 01:51:44,498 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:44,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:44,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1688435672, now seen corresponding path program 1 times [2022-11-03 01:51:44,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:51:44,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571190267] [2022-11-03 01:51:44,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:44,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:51:44,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:45,084 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2022-11-03 01:51:45,084 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:51:45,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571190267] [2022-11-03 01:51:45,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571190267] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:51:45,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:51:45,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:51:45,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302377000] [2022-11-03 01:51:45,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:51:45,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:51:45,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:51:45,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:51:45,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:51:45,089 INFO L87 Difference]: Start difference. First operand 4186 states and 6099 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 01:51:47,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:51:52,094 WARN L539 Checker$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 01:51:52,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:52,966 INFO L93 Difference]: Finished difference Result 12416 states and 18080 transitions. [2022-11-03 01:51:52,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:51:52,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 176 [2022-11-03 01:51:52,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:53,016 INFO L225 Difference]: With dead ends: 12416 [2022-11-03 01:51:53,016 INFO L226 Difference]: Without dead ends: 8261 [2022-11-03 01:51:53,036 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 01:51:53,037 INFO L413 NwaCegarLoop]: 3947 mSDtfsCounter, 3162 mSDsluCounter, 3200 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3162 SdHoareTripleChecker+Valid, 6829 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:53,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3162 Valid, 6829 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 692 Invalid, 1 Unknown, 0 Unchecked, 7.6s Time] [2022-11-03 01:51:53,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8261 states. [2022-11-03 01:51:53,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8261 to 8253. [2022-11-03 01:51:53,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8253 states, 5122 states have (on average 1.3568918391253417) internal successors, (6950), 5315 states have internal predecessors, (6950), 2538 states have call successors, (2538), 593 states have call predecessors, (2538), 592 states have return successors, (2526), 2506 states have call predecessors, (2526), 2526 states have call successors, (2526) [2022-11-03 01:51:53,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8253 states to 8253 states and 12014 transitions. [2022-11-03 01:51:53,466 INFO L78 Accepts]: Start accepts. Automaton has 8253 states and 12014 transitions. Word has length 176 [2022-11-03 01:51:53,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:53,471 INFO L495 AbstractCegarLoop]: Abstraction has 8253 states and 12014 transitions. [2022-11-03 01:51:53,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 01:51:53,472 INFO L276 IsEmpty]: Start isEmpty. Operand 8253 states and 12014 transitions. [2022-11-03 01:51:53,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-11-03 01:51:53,477 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:53,477 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:51:53,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 01:51:53,478 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:53,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:53,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1723523895, now seen corresponding path program 1 times [2022-11-03 01:51:53,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:51:53,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139911575] [2022-11-03 01:51:53,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:53,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:51:53,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:54,193 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2022-11-03 01:51:54,193 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:51:54,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139911575] [2022-11-03 01:51:54,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139911575] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:51:54,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:51:54,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:51:54,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576683806] [2022-11-03 01:51:54,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:51:54,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:51:54,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:51:54,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:51:54,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:51:54,196 INFO L87 Difference]: Start difference. First operand 8253 states and 12014 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2022-11-03 01:51:56,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:52:03,236 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:52:05,666 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 01:52:08,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:52:08,328 INFO L93 Difference]: Finished difference Result 19404 states and 28374 transitions. [2022-11-03 01:52:08,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:52:08,329 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 183 [2022-11-03 01:52:08,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:52:08,393 INFO L225 Difference]: With dead ends: 19404 [2022-11-03 01:52:08,393 INFO L226 Difference]: Without dead ends: 11182 [2022-11-03 01:52:08,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:52:08,428 INFO L413 NwaCegarLoop]: 5721 mSDtfsCounter, 4120 mSDsluCounter, 8920 mSDsCounter, 0 mSdLazyCounter, 1785 mSolverCounterSat, 249 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4120 SdHoareTripleChecker+Valid, 13708 SdHoareTripleChecker+Invalid, 2035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 249 IncrementalHoareTripleChecker+Valid, 1785 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:52:08,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4120 Valid, 13708 Invalid, 2035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [249 Valid, 1785 Invalid, 1 Unknown, 0 Unchecked, 13.6s Time] [2022-11-03 01:52:08,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11182 states. [2022-11-03 01:52:08,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11182 to 8274. [2022-11-03 01:52:08,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8274 states, 5135 states have (on average 1.3559883154819863) internal successors, (6963), 5328 states have internal predecessors, (6963), 2541 states have call successors, (2541), 598 states have call predecessors, (2541), 597 states have return successors, (2529), 2509 states have call predecessors, (2529), 2529 states have call successors, (2529) [2022-11-03 01:52:08,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8274 states to 8274 states and 12033 transitions. [2022-11-03 01:52:08,914 INFO L78 Accepts]: Start accepts. Automaton has 8274 states and 12033 transitions. Word has length 183 [2022-11-03 01:52:08,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:52:08,915 INFO L495 AbstractCegarLoop]: Abstraction has 8274 states and 12033 transitions. [2022-11-03 01:52:08,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2022-11-03 01:52:08,915 INFO L276 IsEmpty]: Start isEmpty. Operand 8274 states and 12033 transitions. [2022-11-03 01:52:08,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-11-03 01:52:08,920 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:52:08,920 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:52:08,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 01:52:08,921 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:52:08,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:52:08,921 INFO L85 PathProgramCache]: Analyzing trace with hash 225757638, now seen corresponding path program 1 times [2022-11-03 01:52:08,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:52:08,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975922256] [2022-11-03 01:52:08,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:08,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:52:09,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:09,464 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2022-11-03 01:52:09,464 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:52:09,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975922256] [2022-11-03 01:52:09,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975922256] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:52:09,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:52:09,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:52:09,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417812566] [2022-11-03 01:52:09,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:52:09,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:52:09,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:52:09,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:52:09,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:52:09,469 INFO L87 Difference]: Start difference. First operand 8274 states and 12033 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-03 01:52:11,542 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:52:15,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:52:15,524 INFO L93 Difference]: Finished difference Result 12906 states and 18463 transitions. [2022-11-03 01:52:15,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:52:15,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 196 [2022-11-03 01:52:15,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:52:15,580 INFO L225 Difference]: With dead ends: 12906 [2022-11-03 01:52:15,580 INFO L226 Difference]: Without dead ends: 12902 [2022-11-03 01:52:15,589 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 01:52:15,590 INFO L413 NwaCegarLoop]: 3278 mSDtfsCounter, 2831 mSDsluCounter, 1987 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2831 SdHoareTripleChecker+Valid, 5039 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-03 01:52:15,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2831 Valid, 5039 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 563 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2022-11-03 01:52:15,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12902 states. [2022-11-03 01:52:16,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12902 to 12898. [2022-11-03 01:52:16,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12898 states, 7901 states have (on average 1.3350208834324768) internal successors, (10548), 8218 states have internal predecessors, (10548), 3957 states have call successors, (3957), 1040 states have call predecessors, (3957), 1039 states have return successors, (3947), 3923 states have call predecessors, (3947), 3947 states have call successors, (3947) [2022-11-03 01:52:16,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12898 states to 12898 states and 18452 transitions. [2022-11-03 01:52:16,427 INFO L78 Accepts]: Start accepts. Automaton has 12898 states and 18452 transitions. Word has length 196 [2022-11-03 01:52:16,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:52:16,428 INFO L495 AbstractCegarLoop]: Abstraction has 12898 states and 18452 transitions. [2022-11-03 01:52:16,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-03 01:52:16,428 INFO L276 IsEmpty]: Start isEmpty. Operand 12898 states and 18452 transitions. [2022-11-03 01:52:16,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-11-03 01:52:16,433 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:52:16,433 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:52:16,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 01:52:16,433 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:52:16,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:52:16,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1592613540, now seen corresponding path program 1 times [2022-11-03 01:52:16,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:52:16,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198226759] [2022-11-03 01:52:16,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:16,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:52:16,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:16,935 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2022-11-03 01:52:16,935 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:52:16,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198226759] [2022-11-03 01:52:16,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198226759] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:52:16,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:52:16,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:52:16,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314773265] [2022-11-03 01:52:16,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:52:16,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:52:16,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:52:16,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:52:16,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:52:16,938 INFO L87 Difference]: Start difference. First operand 12898 states and 18452 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-03 01:52:19,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:52:22,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:52:22,240 INFO L93 Difference]: Finished difference Result 13718 states and 19398 transitions. [2022-11-03 01:52:22,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:52:22,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 197 [2022-11-03 01:52:22,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:52:22,301 INFO L225 Difference]: With dead ends: 13718 [2022-11-03 01:52:22,301 INFO L226 Difference]: Without dead ends: 13714 [2022-11-03 01:52:22,310 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 01:52:22,311 INFO L413 NwaCegarLoop]: 2937 mSDtfsCounter, 3129 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3129 SdHoareTripleChecker+Valid, 3086 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-03 01:52:22,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3129 Valid, 3086 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 371 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2022-11-03 01:52:22,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13714 states. [2022-11-03 01:52:23,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13714 to 13712. [2022-11-03 01:52:23,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13712 states, 8365 states have (on average 1.3297071129707112) internal successors, (11123), 8704 states have internal predecessors, (11123), 4135 states have call successors, (4135), 1212 states have call predecessors, (4135), 1211 states have return successors, (4127), 4095 states have call predecessors, (4127), 4127 states have call successors, (4127) [2022-11-03 01:52:23,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13712 states to 13712 states and 19385 transitions. [2022-11-03 01:52:23,368 INFO L78 Accepts]: Start accepts. Automaton has 13712 states and 19385 transitions. Word has length 197 [2022-11-03 01:52:23,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:52:23,369 INFO L495 AbstractCegarLoop]: Abstraction has 13712 states and 19385 transitions. [2022-11-03 01:52:23,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-03 01:52:23,370 INFO L276 IsEmpty]: Start isEmpty. Operand 13712 states and 19385 transitions. [2022-11-03 01:52:23,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-11-03 01:52:23,376 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:52:23,377 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:52:23,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 01:52:23,379 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:52:23,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:52:23,380 INFO L85 PathProgramCache]: Analyzing trace with hash -2127540343, now seen corresponding path program 1 times [2022-11-03 01:52:23,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:52:23,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800079381] [2022-11-03 01:52:23,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:23,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:52:23,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:23,964 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2022-11-03 01:52:23,965 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:52:23,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800079381] [2022-11-03 01:52:23,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800079381] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:52:23,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:52:23,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:52:23,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76275018] [2022-11-03 01:52:23,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:52:23,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:52:23,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:52:23,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:52:23,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:52:23,968 INFO L87 Difference]: Start difference. First operand 13712 states and 19385 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-03 01:52:26,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:52:27,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:52:30,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:52:30,155 INFO L93 Difference]: Finished difference Result 13714 states and 19386 transitions. [2022-11-03 01:52:30,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:52:30,156 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 198 [2022-11-03 01:52:30,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:52:30,225 INFO L225 Difference]: With dead ends: 13714 [2022-11-03 01:52:30,225 INFO L226 Difference]: Without dead ends: 13711 [2022-11-03 01:52:30,235 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 01:52:30,236 INFO L413 NwaCegarLoop]: 2911 mSDtfsCounter, 3186 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3186 SdHoareTripleChecker+Valid, 2911 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:52:30,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3186 Valid, 2911 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 331 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2022-11-03 01:52:30,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13711 states. [2022-11-03 01:52:31,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13711 to 13711. [2022-11-03 01:52:31,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13711 states, 8365 states have (on average 1.329587567244471) internal successors, (11122), 8703 states have internal predecessors, (11122), 4134 states have call successors, (4134), 1212 states have call predecessors, (4134), 1211 states have return successors, (4127), 4095 states have call predecessors, (4127), 4127 states have call successors, (4127) [2022-11-03 01:52:31,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13711 states to 13711 states and 19383 transitions. [2022-11-03 01:52:31,219 INFO L78 Accepts]: Start accepts. Automaton has 13711 states and 19383 transitions. Word has length 198 [2022-11-03 01:52:31,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:52:31,221 INFO L495 AbstractCegarLoop]: Abstraction has 13711 states and 19383 transitions. [2022-11-03 01:52:31,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-03 01:52:31,222 INFO L276 IsEmpty]: Start isEmpty. Operand 13711 states and 19383 transitions. [2022-11-03 01:52:31,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-11-03 01:52:31,226 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:52:31,227 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:52:31,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 01:52:31,227 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:52:31,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:52:31,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1530397185, now seen corresponding path program 1 times [2022-11-03 01:52:31,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:52:31,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701488812] [2022-11-03 01:52:31,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:31,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:52:31,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:31,773 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2022-11-03 01:52:31,773 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:52:31,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701488812] [2022-11-03 01:52:31,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701488812] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:52:31,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:52:31,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:52:31,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320514703] [2022-11-03 01:52:31,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:52:31,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:52:31,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:52:31,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:52:31,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:52:31,776 INFO L87 Difference]: Start difference. First operand 13711 states and 19383 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-03 01:52:33,851 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:52:36,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:52:36,486 INFO L93 Difference]: Finished difference Result 13713 states and 19384 transitions. [2022-11-03 01:52:36,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:52:36,486 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 199 [2022-11-03 01:52:36,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:52:36,548 INFO L225 Difference]: With dead ends: 13713 [2022-11-03 01:52:36,548 INFO L226 Difference]: Without dead ends: 13710 [2022-11-03 01:52:36,558 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 01:52:36,558 INFO L413 NwaCegarLoop]: 2909 mSDtfsCounter, 3183 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3183 SdHoareTripleChecker+Valid, 2909 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:52:36,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3183 Valid, 2909 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 331 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2022-11-03 01:52:36,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13710 states. [2022-11-03 01:52:37,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13710 to 13710. [2022-11-03 01:52:37,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13710 states, 8365 states have (on average 1.3294680215182306) internal successors, (11121), 8702 states have internal predecessors, (11121), 4133 states have call successors, (4133), 1212 states have call predecessors, (4133), 1211 states have return successors, (4127), 4095 states have call predecessors, (4127), 4127 states have call successors, (4127) [2022-11-03 01:52:37,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13710 states to 13710 states and 19381 transitions. [2022-11-03 01:52:37,506 INFO L78 Accepts]: Start accepts. Automaton has 13710 states and 19381 transitions. Word has length 199 [2022-11-03 01:52:37,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:52:37,507 INFO L495 AbstractCegarLoop]: Abstraction has 13710 states and 19381 transitions. [2022-11-03 01:52:37,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-03 01:52:37,507 INFO L276 IsEmpty]: Start isEmpty. Operand 13710 states and 19381 transitions. [2022-11-03 01:52:37,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-11-03 01:52:37,512 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:52:37,513 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:52:37,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 01:52:37,513 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:52:37,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:52:37,514 INFO L85 PathProgramCache]: Analyzing trace with hash -198823604, now seen corresponding path program 1 times [2022-11-03 01:52:37,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:52:37,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114025896] [2022-11-03 01:52:37,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:37,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:52:37,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:38,000 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2022-11-03 01:52:38,001 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:52:38,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114025896] [2022-11-03 01:52:38,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114025896] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:52:38,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:52:38,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:52:38,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360754999] [2022-11-03 01:52:38,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:52:38,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:52:38,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:52:38,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:52:38,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:52:38,005 INFO L87 Difference]: Start difference. First operand 13710 states and 19381 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-03 01:52:40,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:52:43,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:52:43,168 INFO L93 Difference]: Finished difference Result 13712 states and 19382 transitions. [2022-11-03 01:52:43,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:52:43,169 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 200 [2022-11-03 01:52:43,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:52:43,220 INFO L225 Difference]: With dead ends: 13712 [2022-11-03 01:52:43,220 INFO L226 Difference]: Without dead ends: 13709 [2022-11-03 01:52:43,228 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 01:52:43,229 INFO L413 NwaCegarLoop]: 2907 mSDtfsCounter, 3180 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3180 SdHoareTripleChecker+Valid, 2907 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:52:43,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3180 Valid, 2907 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 331 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2022-11-03 01:52:43,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13709 states. [2022-11-03 01:52:43,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13709 to 13709. [2022-11-03 01:52:43,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13709 states, 8365 states have (on average 1.3293484757919904) internal successors, (11120), 8701 states have internal predecessors, (11120), 4132 states have call successors, (4132), 1212 states have call predecessors, (4132), 1211 states have return successors, (4127), 4095 states have call predecessors, (4127), 4127 states have call successors, (4127) [2022-11-03 01:52:43,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13709 states to 13709 states and 19379 transitions. [2022-11-03 01:52:43,975 INFO L78 Accepts]: Start accepts. Automaton has 13709 states and 19379 transitions. Word has length 200 [2022-11-03 01:52:43,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:52:43,976 INFO L495 AbstractCegarLoop]: Abstraction has 13709 states and 19379 transitions. [2022-11-03 01:52:43,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-03 01:52:43,976 INFO L276 IsEmpty]: Start isEmpty. Operand 13709 states and 19379 transitions. [2022-11-03 01:52:43,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-11-03 01:52:43,981 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:52:43,981 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:52:43,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 01:52:43,982 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:52:43,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:52:43,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1869710686, now seen corresponding path program 1 times [2022-11-03 01:52:43,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:52:43,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038997619] [2022-11-03 01:52:43,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:43,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:52:44,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:44,473 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2022-11-03 01:52:44,474 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:52:44,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038997619] [2022-11-03 01:52:44,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038997619] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:52:44,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:52:44,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:52:44,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177417382] [2022-11-03 01:52:44,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:52:44,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:52:44,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:52:44,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:52:44,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:52:44,476 INFO L87 Difference]: Start difference. First operand 13709 states and 19379 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-03 01:52:46,560 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:52:48,883 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 01:52:52,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:52:52,350 INFO L93 Difference]: Finished difference Result 27047 states and 38208 transitions. [2022-11-03 01:52:52,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:52:52,351 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 201 [2022-11-03 01:52:52,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:52:52,475 INFO L225 Difference]: With dead ends: 27047 [2022-11-03 01:52:52,475 INFO L226 Difference]: Without dead ends: 27005 [2022-11-03 01:52:52,497 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 01:52:52,498 INFO L413 NwaCegarLoop]: 3550 mSDtfsCounter, 3085 mSDsluCounter, 3160 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3085 SdHoareTripleChecker+Valid, 6386 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:52:52,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3085 Valid, 6386 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 660 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2022-11-03 01:52:52,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27005 states. [2022-11-03 01:52:54,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27005 to 27001. [2022-11-03 01:52:54,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27001 states, 16482 states have (on average 1.3287829146948187) internal successors, (21901), 17149 states have internal predecessors, (21901), 8127 states have call successors, (8127), 2396 states have call predecessors, (8127), 2391 states have return successors, (8122), 8055 states have call predecessors, (8122), 8122 states have call successors, (8122) [2022-11-03 01:52:54,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27001 states to 27001 states and 38150 transitions. [2022-11-03 01:52:54,188 INFO L78 Accepts]: Start accepts. Automaton has 27001 states and 38150 transitions. Word has length 201 [2022-11-03 01:52:54,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:52:54,189 INFO L495 AbstractCegarLoop]: Abstraction has 27001 states and 38150 transitions. [2022-11-03 01:52:54,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-03 01:52:54,189 INFO L276 IsEmpty]: Start isEmpty. Operand 27001 states and 38150 transitions. [2022-11-03 01:52:54,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-11-03 01:52:54,195 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:52:54,195 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:52:54,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 01:52:54,196 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:52:54,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:52:54,196 INFO L85 PathProgramCache]: Analyzing trace with hash -481676916, now seen corresponding path program 1 times [2022-11-03 01:52:54,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:52:54,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992631258] [2022-11-03 01:52:54,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:54,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:52:54,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:54,614 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2022-11-03 01:52:54,615 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:52:54,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992631258] [2022-11-03 01:52:54,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992631258] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:52:54,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:52:54,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:52:54,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107687233] [2022-11-03 01:52:54,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:52:54,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:52:54,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:52:54,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:52:54,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:52:54,617 INFO L87 Difference]: Start difference. First operand 27001 states and 38150 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-03 01:52:56,693 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:53:03,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:53:03,613 INFO L93 Difference]: Finished difference Result 73460 states and 103447 transitions. [2022-11-03 01:53:03,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:53:03,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 217 [2022-11-03 01:53:03,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:53:03,779 INFO L225 Difference]: With dead ends: 73460 [2022-11-03 01:53:03,779 INFO L226 Difference]: Without dead ends: 46507 [2022-11-03 01:53:03,893 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 01:53:03,894 INFO L413 NwaCegarLoop]: 4516 mSDtfsCounter, 2903 mSDsluCounter, 3212 mSDsCounter, 0 mSdLazyCounter, 830 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2903 SdHoareTripleChecker+Valid, 7404 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 830 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-03 01:53:03,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2903 Valid, 7404 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 830 Invalid, 1 Unknown, 0 Unchecked, 6.9s Time] [2022-11-03 01:53:03,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46507 states. [2022-11-03 01:53:06,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46507 to 46489. [2022-11-03 01:53:06,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46489 states, 28464 states have (on average 1.3305578976953345) internal successors, (37873), 29571 states have internal predecessors, (37873), 13733 states have call successors, (13733), 4300 states have call predecessors, (13733), 4291 states have return successors, (13728), 13597 states have call predecessors, (13728), 13728 states have call successors, (13728) [2022-11-03 01:53:07,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46489 states to 46489 states and 65334 transitions. [2022-11-03 01:53:07,174 INFO L78 Accepts]: Start accepts. Automaton has 46489 states and 65334 transitions. Word has length 217 [2022-11-03 01:53:07,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:53:07,175 INFO L495 AbstractCegarLoop]: Abstraction has 46489 states and 65334 transitions. [2022-11-03 01:53:07,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-03 01:53:07,175 INFO L276 IsEmpty]: Start isEmpty. Operand 46489 states and 65334 transitions. [2022-11-03 01:53:07,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2022-11-03 01:53:07,188 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:53:07,188 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:53:07,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 01:53:07,189 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:53:07,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:53:07,189 INFO L85 PathProgramCache]: Analyzing trace with hash -402781398, now seen corresponding path program 1 times [2022-11-03 01:53:07,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:53:07,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489604414] [2022-11-03 01:53:07,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:53:07,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:53:07,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:53:07,935 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 665 trivial. 0 not checked. [2022-11-03 01:53:07,935 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:53:07,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489604414] [2022-11-03 01:53:07,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489604414] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:53:07,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:53:07,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:53:07,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501733777] [2022-11-03 01:53:07,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:53:07,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:53:07,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:53:07,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:53:07,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:53:07,937 INFO L87 Difference]: Start difference. First operand 46489 states and 65334 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-03 01:53:09,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:53:15,827 WARN L539 Checker$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 01:53:20,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:53:20,651 INFO L93 Difference]: Finished difference Result 116310 states and 163543 transitions. [2022-11-03 01:53:20,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:53:20,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 246 [2022-11-03 01:53:20,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:53:20,915 INFO L225 Difference]: With dead ends: 116310 [2022-11-03 01:53:20,916 INFO L226 Difference]: Without dead ends: 69869 [2022-11-03 01:53:21,166 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 01:53:21,167 INFO L413 NwaCegarLoop]: 5164 mSDtfsCounter, 2977 mSDsluCounter, 3089 mSDsCounter, 0 mSdLazyCounter, 1088 mSolverCounterSat, 57 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2977 SdHoareTripleChecker+Valid, 7929 SdHoareTripleChecker+Invalid, 1146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1088 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:53:21,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2977 Valid, 7929 Invalid, 1146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1088 Invalid, 1 Unknown, 0 Unchecked, 9.4s Time] [2022-11-03 01:53:21,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69869 states. [2022-11-03 01:53:24,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69869 to 69852. [2022-11-03 01:53:24,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69852 states, 42929 states have (on average 1.3277737659856974) internal successors, (57000), 44599 states have internal predecessors, (57000), 20458 states have call successors, (20458), 6477 states have call predecessors, (20458), 6464 states have return successors, (20453), 20251 states have call predecessors, (20453), 20453 states have call successors, (20453) [2022-11-03 01:53:25,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69852 states to 69852 states and 97911 transitions. [2022-11-03 01:53:25,358 INFO L78 Accepts]: Start accepts. Automaton has 69852 states and 97911 transitions. Word has length 246 [2022-11-03 01:53:25,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:53:25,359 INFO L495 AbstractCegarLoop]: Abstraction has 69852 states and 97911 transitions. [2022-11-03 01:53:25,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-03 01:53:25,359 INFO L276 IsEmpty]: Start isEmpty. Operand 69852 states and 97911 transitions. [2022-11-03 01:53:25,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 01:53:25,375 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:53:25,375 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:53:25,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 01:53:25,376 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:53:25,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:53:25,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1516350426, now seen corresponding path program 1 times [2022-11-03 01:53:25,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:53:25,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261188623] [2022-11-03 01:53:25,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:53:25,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:53:25,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:53:25,931 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 487 trivial. 0 not checked. [2022-11-03 01:53:25,931 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:53:25,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261188623] [2022-11-03 01:53:25,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261188623] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:53:25,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:53:25,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:53:25,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852201789] [2022-11-03 01:53:25,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:53:25,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:53:25,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:53:25,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:53:25,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:53:25,934 INFO L87 Difference]: Start difference. First operand 69852 states and 97911 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-03 01:53:28,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:53:34,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:53:34,040 INFO L93 Difference]: Finished difference Result 109435 states and 153220 transitions. [2022-11-03 01:53:34,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:53:34,041 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 261 [2022-11-03 01:53:34,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:53:34,185 INFO L225 Difference]: With dead ends: 109435 [2022-11-03 01:53:34,185 INFO L226 Difference]: Without dead ends: 39628 [2022-11-03 01:53:34,345 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 01:53:34,345 INFO L413 NwaCegarLoop]: 2908 mSDtfsCounter, 10 mSDsluCounter, 3233 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 5811 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:53:34,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 5811 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 664 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2022-11-03 01:53:34,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39628 states. [2022-11-03 01:53:36,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39628 to 39610. [2022-11-03 01:53:36,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39610 states, 24310 states have (on average 1.3269436445907035) internal successors, (32258), 25252 states have internal predecessors, (32258), 11546 states have call successors, (11546), 3761 states have call predecessors, (11546), 3753 states have return successors, (11541), 11422 states have call predecessors, (11541), 11541 states have call successors, (11541) [2022-11-03 01:53:36,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39610 states to 39610 states and 55345 transitions. [2022-11-03 01:53:36,574 INFO L78 Accepts]: Start accepts. Automaton has 39610 states and 55345 transitions. Word has length 261 [2022-11-03 01:53:36,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:53:36,575 INFO L495 AbstractCegarLoop]: Abstraction has 39610 states and 55345 transitions. [2022-11-03 01:53:36,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-03 01:53:36,575 INFO L276 IsEmpty]: Start isEmpty. Operand 39610 states and 55345 transitions. [2022-11-03 01:53:36,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2022-11-03 01:53:36,591 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:53:36,592 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:53:36,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-03 01:53:36,592 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:53:36,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:53:36,593 INFO L85 PathProgramCache]: Analyzing trace with hash -448680708, now seen corresponding path program 1 times [2022-11-03 01:53:36,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:53:36,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947727638] [2022-11-03 01:53:36,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:53:36,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:53:36,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:53:37,429 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 685 trivial. 0 not checked. [2022-11-03 01:53:37,429 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:53:37,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947727638] [2022-11-03 01:53:37,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947727638] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:53:37,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:53:37,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:53:37,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851499813] [2022-11-03 01:53:37,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:53:37,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:53:37,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:53:37,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:53:37,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:53:37,432 INFO L87 Difference]: Start difference. First operand 39610 states and 55345 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-03 01:53:39,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []