./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--misc--usbtest.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--misc--usbtest.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS --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 045b49e5089f039c3b28eef4cf3a9c907cbda8f22472af0061e42bad883dd2f9 --- 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-8393723 [2022-11-19 08:15:49,013 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:15:49,015 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:15:49,043 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:15:49,043 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:15:49,044 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:15:49,046 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:15:49,048 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:15:49,049 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:15:49,050 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:15:49,051 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:15:49,052 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:15:49,053 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:15:49,054 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:15:49,055 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:15:49,056 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:15:49,057 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:15:49,058 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:15:49,060 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:15:49,062 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:15:49,063 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:15:49,068 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:15:49,069 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:15:49,070 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:15:49,073 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:15:49,074 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:15:49,074 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:15:49,075 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:15:49,075 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:15:49,076 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:15:49,077 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:15:49,077 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:15:49,078 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:15:49,079 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:15:49,080 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:15:49,081 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:15:49,081 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:15:49,082 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:15:49,082 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:15:49,091 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:15:49,093 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:15:49,094 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 08:15:49,138 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:15:49,138 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:15:49,139 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:15:49,139 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:15:49,140 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:15:49,140 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:15:49,140 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:15:49,141 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:15:49,141 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:15:49,141 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:15:49,142 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:15:49,142 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:15:49,142 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:15:49,142 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:15:49,143 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:15:49,143 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:15:49,143 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:15:49,143 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:15:49,144 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:15:49,144 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:15:49,144 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:15:49,144 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:15:49,145 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:15:49,145 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:15:49,145 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:15:49,145 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:15:49,145 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:15:49,146 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:15:49,146 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:15:49,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:15:49,146 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:15:49,147 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:15:49,147 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:15:49,147 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:15:49,147 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:15:49,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:15:49,147 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:15:49,148 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:15:49,148 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_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 045b49e5089f039c3b28eef4cf3a9c907cbda8f22472af0061e42bad883dd2f9 [2022-11-19 08:15:49,419 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:15:49,452 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:15:49,455 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:15:49,457 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:15:49,458 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:15:49,459 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--misc--usbtest.ko-entry_point.cil.out.i [2022-11-19 08:15:49,526 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/data/b9f160a7a/e25044d185a74e0a9a26a9c6142bb5ca/FLAG028b2785a [2022-11-19 08:15:50,404 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:15:50,405 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--misc--usbtest.ko-entry_point.cil.out.i [2022-11-19 08:15:50,440 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/data/b9f160a7a/e25044d185a74e0a9a26a9c6142bb5ca/FLAG028b2785a [2022-11-19 08:15:50,947 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/data/b9f160a7a/e25044d185a74e0a9a26a9c6142bb5ca [2022-11-19 08:15:50,950 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:15:50,953 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:15:50,958 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:15:50,958 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:15:50,962 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:15:50,963 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:15:50" (1/1) ... [2022-11-19 08:15:50,964 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b8391f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:50, skipping insertion in model container [2022-11-19 08:15:50,965 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:15:50" (1/1) ... [2022-11-19 08:15:50,973 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:15:51,109 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:15:51,559 WARN L1258 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3528] [2022-11-19 08:15:51,559 WARN L1258 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3529-3530] [2022-11-19 08:15:51,774 WARN L234 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_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--misc--usbtest.ko-entry_point.cil.out.i[105797,105810] [2022-11-19 08:15:52,551 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:15:52,583 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:15:52,677 WARN L1258 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3528] [2022-11-19 08:15:52,678 WARN L1258 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3529-3530] [2022-11-19 08:15:52,697 WARN L234 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_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--misc--usbtest.ko-entry_point.cil.out.i[105797,105810] [2022-11-19 08:15:52,991 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:15:53,050 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:15:53,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:53 WrapperNode [2022-11-19 08:15:53,051 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:15:53,052 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:15:53,052 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:15:53,052 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:15:53,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:53" (1/1) ... [2022-11-19 08:15:53,148 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:53" (1/1) ... [2022-11-19 08:15:53,392 INFO L138 Inliner]: procedures = 189, calls = 1742, calls flagged for inlining = 77, calls inlined = 68, statements flattened = 4482 [2022-11-19 08:15:53,392 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:15:53,403 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:15:53,403 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:15:53,403 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:15:53,417 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:53" (1/1) ... [2022-11-19 08:15:53,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:53" (1/1) ... [2022-11-19 08:15:53,442 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:53" (1/1) ... [2022-11-19 08:15:53,443 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:53" (1/1) ... [2022-11-19 08:15:53,533 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:53" (1/1) ... [2022-11-19 08:15:53,548 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:53" (1/1) ... [2022-11-19 08:15:53,576 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:53" (1/1) ... [2022-11-19 08:15:53,586 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:53" (1/1) ... [2022-11-19 08:15:53,615 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:15:53,616 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:15:53,616 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:15:53,616 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:15:53,617 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:53" (1/1) ... [2022-11-19 08:15:53,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:15:53,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:15:53,656 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:15:53,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:15:53,699 INFO L130 BoogieDeclarations]: Found specification of procedure sg_page [2022-11-19 08:15:53,699 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_page [2022-11-19 08:15:53,699 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-19 08:15:53,699 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-19 08:15:53,700 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-11-19 08:15:53,700 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-11-19 08:15:53,700 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-11-19 08:15:53,700 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-11-19 08:15:53,700 INFO L130 BoogieDeclarations]: Found specification of procedure free_sglist [2022-11-19 08:15:53,700 INFO L138 BoogieDeclarations]: Found implementation of procedure free_sglist [2022-11-19 08:15:53,701 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc_array [2022-11-19 08:15:53,701 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc_array [2022-11-19 08:15:53,701 INFO L130 BoogieDeclarations]: Found specification of procedure test_iso_queue [2022-11-19 08:15:53,701 INFO L138 BoogieDeclarations]: Found implementation of procedure test_iso_queue [2022-11-19 08:15:53,701 INFO L130 BoogieDeclarations]: Found specification of procedure simple_check_buf [2022-11-19 08:15:53,701 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_check_buf [2022-11-19 08:15:53,702 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 08:15:53,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 08:15:53,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 08:15:53,702 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2022-11-19 08:15:53,702 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2022-11-19 08:15:53,702 INFO L130 BoogieDeclarations]: Found specification of procedure perform_sglist [2022-11-19 08:15:53,703 INFO L138 BoogieDeclarations]: Found implementation of procedure perform_sglist [2022-11-19 08:15:53,703 INFO L130 BoogieDeclarations]: Found specification of procedure test_unaligned_bulk [2022-11-19 08:15:53,703 INFO L138 BoogieDeclarations]: Found implementation of procedure test_unaligned_bulk [2022-11-19 08:15:53,703 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-19 08:15:53,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-19 08:15:53,703 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_sglist [2022-11-19 08:15:53,704 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_sglist [2022-11-19 08:15:53,704 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-19 08:15:53,704 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-19 08:15:53,704 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 08:15:53,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 08:15:53,704 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2022-11-19 08:15:53,705 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2022-11-19 08:15:53,705 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-19 08:15:53,705 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-19 08:15:53,705 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-19 08:15:53,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-19 08:15:53,705 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-19 08:15:53,706 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-19 08:15:53,706 INFO L130 BoogieDeclarations]: Found specification of procedure set_altsetting [2022-11-19 08:15:53,706 INFO L138 BoogieDeclarations]: Found implementation of procedure set_altsetting [2022-11-19 08:15:53,706 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2022-11-19 08:15:53,706 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2022-11-19 08:15:53,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 08:15:53,707 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-19 08:15:53,707 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-19 08:15:53,707 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2022-11-19 08:15:53,707 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2022-11-19 08:15:53,707 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-19 08:15:53,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-19 08:15:53,708 INFO L130 BoogieDeclarations]: Found specification of procedure verify_not_halted [2022-11-19 08:15:53,708 INFO L138 BoogieDeclarations]: Found implementation of procedure verify_not_halted [2022-11-19 08:15:53,708 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2022-11-19 08:15:53,708 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2022-11-19 08:15:53,708 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-11-19 08:15:53,708 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-11-19 08:15:53,709 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 08:15:53,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 08:15:53,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 08:15:53,709 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 08:15:53,709 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2022-11-19 08:15:53,709 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2022-11-19 08:15:53,709 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 08:15:53,710 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 08:15:53,710 INFO L130 BoogieDeclarations]: Found specification of procedure test_halt [2022-11-19 08:15:53,710 INFO L138 BoogieDeclarations]: Found implementation of procedure test_halt [2022-11-19 08:15:53,710 INFO L130 BoogieDeclarations]: Found specification of procedure usbtest_alloc_urb [2022-11-19 08:15:53,710 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtest_alloc_urb [2022-11-19 08:15:53,710 INFO L130 BoogieDeclarations]: Found specification of procedure unlink1 [2022-11-19 08:15:53,711 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink1 [2022-11-19 08:15:53,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 08:15:53,711 INFO L130 BoogieDeclarations]: Found specification of procedure ctrl_out [2022-11-19 08:15:53,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ctrl_out [2022-11-19 08:15:53,711 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-19 08:15:53,711 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-19 08:15:53,712 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2022-11-19 08:15:53,712 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2022-11-19 08:15:53,712 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_status [2022-11-19 08:15:53,712 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_status [2022-11-19 08:15:53,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:15:53,712 INFO L130 BoogieDeclarations]: Found specification of procedure is_good_config [2022-11-19 08:15:53,712 INFO L138 BoogieDeclarations]: Found implementation of procedure is_good_config [2022-11-19 08:15:53,713 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2022-11-19 08:15:53,713 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2022-11-19 08:15:53,713 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion [2022-11-19 08:15:53,713 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion [2022-11-19 08:15:53,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 08:15:53,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 08:15:53,714 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unlink_urb [2022-11-19 08:15:53,714 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unlink_urb [2022-11-19 08:15:53,714 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-11-19 08:15:53,714 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-11-19 08:15:53,714 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2022-11-19 08:15:53,714 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2022-11-19 08:15:53,715 INFO L130 BoogieDeclarations]: Found specification of procedure testdev_to_usbdev [2022-11-19 08:15:53,715 INFO L138 BoogieDeclarations]: Found implementation of procedure testdev_to_usbdev [2022-11-19 08:15:53,715 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2022-11-19 08:15:53,715 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2022-11-19 08:15:53,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 08:15:53,715 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_simple [2022-11-19 08:15:53,715 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_simple [2022-11-19 08:15:53,716 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2022-11-19 08:15:53,716 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2022-11-19 08:15:53,716 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2022-11-19 08:15:53,716 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2022-11-19 08:15:53,716 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-11-19 08:15:53,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-11-19 08:15:53,717 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-11-19 08:15:53,717 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-11-19 08:15:53,717 INFO L130 BoogieDeclarations]: Found specification of procedure simple_io [2022-11-19 08:15:53,717 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_io [2022-11-19 08:15:53,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 08:15:53,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 08:15:53,718 INFO L130 BoogieDeclarations]: Found specification of procedure simple_alloc_urb [2022-11-19 08:15:53,718 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_alloc_urb [2022-11-19 08:15:53,718 INFO L130 BoogieDeclarations]: Found specification of procedure simple_free_urb [2022-11-19 08:15:53,718 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_free_urb [2022-11-19 08:15:53,718 INFO L130 BoogieDeclarations]: Found specification of procedure simple_fill_buf [2022-11-19 08:15:53,718 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_fill_buf [2022-11-19 08:15:53,719 INFO L130 BoogieDeclarations]: Found specification of procedure do_gettimeofday [2022-11-19 08:15:53,719 INFO L138 BoogieDeclarations]: Found implementation of procedure do_gettimeofday [2022-11-19 08:15:53,719 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-19 08:15:53,719 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-19 08:15:53,719 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-19 08:15:53,719 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-19 08:15:53,719 INFO L130 BoogieDeclarations]: Found specification of procedure usbtest_ioctl [2022-11-19 08:15:53,720 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtest_ioctl [2022-11-19 08:15:53,720 INFO L130 BoogieDeclarations]: Found specification of procedure buffer_offset [2022-11-19 08:15:53,720 INFO L138 BoogieDeclarations]: Found implementation of procedure buffer_offset [2022-11-19 08:15:53,720 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-11-19 08:15:53,720 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-11-19 08:15:53,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 08:15:53,720 INFO L130 BoogieDeclarations]: Found specification of procedure usb_clear_halt [2022-11-19 08:15:53,721 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_clear_halt [2022-11-19 08:15:53,721 INFO L130 BoogieDeclarations]: Found specification of procedure usbtest_disconnect [2022-11-19 08:15:53,721 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtest_disconnect [2022-11-19 08:15:53,721 INFO L130 BoogieDeclarations]: Found specification of procedure check_guard_bytes [2022-11-19 08:15:53,721 INFO L138 BoogieDeclarations]: Found implementation of procedure check_guard_bytes [2022-11-19 08:15:53,721 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-11-19 08:15:53,722 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-11-19 08:15:53,722 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-11-19 08:15:53,722 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-11-19 08:15:53,722 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-19 08:15:53,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-19 08:15:53,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:15:53,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:15:53,723 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_descriptor [2022-11-19 08:15:53,723 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_descriptor [2022-11-19 08:15:54,451 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:15:54,455 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:15:55,053 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 08:15:57,767 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:15:58,762 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:15:58,762 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 08:15:58,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:15:58 BoogieIcfgContainer [2022-11-19 08:15:58,768 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:15:58,772 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:15:58,772 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:15:58,776 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:15:58,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:15:50" (1/3) ... [2022-11-19 08:15:58,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53be8e3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:15:58, skipping insertion in model container [2022-11-19 08:15:58,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:53" (2/3) ... [2022-11-19 08:15:58,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53be8e3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:15:58, skipping insertion in model container [2022-11-19 08:15:58,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:15:58" (3/3) ... [2022-11-19 08:15:58,781 INFO L112 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--misc--usbtest.ko-entry_point.cil.out.i [2022-11-19 08:15:58,808 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:15:58,808 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 08:15:58,910 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:15:58,919 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;@7d72dfda, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:15:58,920 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 08:15:58,929 INFO L276 IsEmpty]: Start isEmpty. Operand has 1005 states, 679 states have (on average 1.427098674521355) internal successors, (969), 694 states have internal predecessors, (969), 256 states have call successors, (256), 69 states have call predecessors, (256), 68 states have return successors, (253), 250 states have call predecessors, (253), 253 states have call successors, (253) [2022-11-19 08:15:58,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-19 08:15:58,941 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:15:58,942 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:15:58,943 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:15:58,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:15:58,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1206339259, now seen corresponding path program 1 times [2022-11-19 08:15:58,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:15:58,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073722969] [2022-11-19 08:15:58,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:15:58,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:15:59,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:15:59,532 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 08:15:59,533 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:15:59,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073722969] [2022-11-19 08:15:59,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073722969] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:15:59,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:15:59,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:15:59,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728603574] [2022-11-19 08:15:59,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:15:59,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:15:59,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:15:59,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:15:59,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:15:59,571 INFO L87 Difference]: Start difference. First operand has 1005 states, 679 states have (on average 1.427098674521355) internal successors, (969), 694 states have internal predecessors, (969), 256 states have call successors, (256), 69 states have call predecessors, (256), 68 states have return successors, (253), 250 states have call predecessors, (253), 253 states have call successors, (253) Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-19 08:16:00,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:16:00,747 INFO L93 Difference]: Finished difference Result 2037 states and 3055 transitions. [2022-11-19 08:16:00,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:16:00,752 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2022-11-19 08:16:00,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:16:00,776 INFO L225 Difference]: With dead ends: 2037 [2022-11-19 08:16:00,776 INFO L226 Difference]: Without dead ends: 1022 [2022-11-19 08:16:00,797 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 [2022-11-19 08:16:00,802 INFO L413 NwaCegarLoop]: 1288 mSDtfsCounter, 48 mSDsluCounter, 1263 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 2551 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-19 08:16:00,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 2551 Invalid, 395 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-19 08:16:00,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1022 states. [2022-11-19 08:16:00,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1022 to 1020. [2022-11-19 08:16:00,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1020 states, 693 states have (on average 1.4141414141414141) internal successors, (980), 704 states have internal predecessors, (980), 255 states have call successors, (255), 72 states have call predecessors, (255), 71 states have return successors, (254), 250 states have call predecessors, (254), 254 states have call successors, (254) [2022-11-19 08:16:00,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1020 states to 1020 states and 1489 transitions. [2022-11-19 08:16:00,954 INFO L78 Accepts]: Start accepts. Automaton has 1020 states and 1489 transitions. Word has length 35 [2022-11-19 08:16:00,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:16:00,955 INFO L495 AbstractCegarLoop]: Abstraction has 1020 states and 1489 transitions. [2022-11-19 08:16:00,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-19 08:16:00,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1020 states and 1489 transitions. [2022-11-19 08:16:00,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-19 08:16:00,958 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:16:00,958 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-11-19 08:16:00,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 08:16:00,959 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:16:00,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:16:00,960 INFO L85 PathProgramCache]: Analyzing trace with hash 389929019, now seen corresponding path program 1 times [2022-11-19 08:16:00,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:16:00,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406209958] [2022-11-19 08:16:00,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:16:00,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:16:01,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:16:01,311 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 08:16:01,311 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:16:01,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406209958] [2022-11-19 08:16:01,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406209958] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:16:01,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:16:01,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:16:01,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114622289] [2022-11-19 08:16:01,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:16:01,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:16:01,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:16:01,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:16:01,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:16:01,324 INFO L87 Difference]: Start difference. First operand 1020 states and 1489 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-19 08:16:01,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:16:01,977 INFO L93 Difference]: Finished difference Result 1048 states and 1515 transitions. [2022-11-19 08:16:01,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:16:01,979 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 51 [2022-11-19 08:16:01,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:16:01,992 INFO L225 Difference]: With dead ends: 1048 [2022-11-19 08:16:01,993 INFO L226 Difference]: Without dead ends: 1045 [2022-11-19 08:16:01,997 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 [2022-11-19 08:16:01,999 INFO L413 NwaCegarLoop]: 1271 mSDtfsCounter, 1383 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1383 SdHoareTripleChecker+Valid, 1321 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-19 08:16:01,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1383 Valid, 1321 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-19 08:16:02,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2022-11-19 08:16:02,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 1045. [2022-11-19 08:16:02,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1045 states, 707 states have (on average 1.4073550212164074) internal successors, (995), 718 states have internal predecessors, (995), 259 states have call successors, (259), 79 states have call predecessors, (259), 78 states have return successors, (258), 254 states have call predecessors, (258), 258 states have call successors, (258) [2022-11-19 08:16:02,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 1512 transitions. [2022-11-19 08:16:02,102 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 1512 transitions. Word has length 51 [2022-11-19 08:16:02,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:16:02,103 INFO L495 AbstractCegarLoop]: Abstraction has 1045 states and 1512 transitions. [2022-11-19 08:16:02,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-19 08:16:02,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 1512 transitions. [2022-11-19 08:16:02,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-19 08:16:02,124 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:16:02,125 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:16:02,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 08:16:02,125 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:16:02,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:16:02,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1643153568, now seen corresponding path program 1 times [2022-11-19 08:16:02,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:16:02,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791343759] [2022-11-19 08:16:02,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:16:02,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:16:02,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:16:02,332 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:16:02,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791343759] [2022-11-19 08:16:02,334 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-19 08:16:02,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125016313] [2022-11-19 08:16:02,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:16:02,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:16:02,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:16:02,342 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:16:02,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 08:16:03,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:16:03,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 2508 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 08:16:03,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:16:03,323 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-19 08:16:03,327 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:16:03,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125016313] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:16:03,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:16:03,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:16:03,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670997087] [2022-11-19 08:16:03,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:16:03,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:16:03,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:16:03,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:16:03,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:16:03,335 INFO L87 Difference]: Start difference. First operand 1045 states and 1512 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-19 08:16:04,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:16:04,333 INFO L93 Difference]: Finished difference Result 2144 states and 3089 transitions. [2022-11-19 08:16:04,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:16:04,334 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 132 [2022-11-19 08:16:04,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:16:04,341 INFO L225 Difference]: With dead ends: 2144 [2022-11-19 08:16:04,342 INFO L226 Difference]: Without dead ends: 1117 [2022-11-19 08:16:04,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:16:04,347 INFO L413 NwaCegarLoop]: 1276 mSDtfsCounter, 205 mSDsluCounter, 1126 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 2402 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-19 08:16:04,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 2402 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-19 08:16:04,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1117 states. [2022-11-19 08:16:04,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1117 to 1111. [2022-11-19 08:16:04,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 755 states have (on average 1.4013245033112582) internal successors, (1058), 766 states have internal predecessors, (1058), 265 states have call successors, (265), 91 states have call predecessors, (265), 90 states have return successors, (264), 260 states have call predecessors, (264), 264 states have call successors, (264) [2022-11-19 08:16:04,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 1587 transitions. [2022-11-19 08:16:04,406 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 1587 transitions. Word has length 132 [2022-11-19 08:16:04,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:16:04,407 INFO L495 AbstractCegarLoop]: Abstraction has 1111 states and 1587 transitions. [2022-11-19 08:16:04,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-19 08:16:04,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 1587 transitions. [2022-11-19 08:16:04,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-19 08:16:04,413 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:16:04,413 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:16:04,424 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-19 08:16:04,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:16:04,624 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:16:04,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:16:04,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1586840100, now seen corresponding path program 1 times [2022-11-19 08:16:04,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:16:04,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291405436] [2022-11-19 08:16:04,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:16:04,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:16:04,745 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 08:16:04,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [706027708] [2022-11-19 08:16:04,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:16:04,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:16:04,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:16:04,751 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:16:04,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 08:16:05,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:16:05,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 2593 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 08:16:05,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:16:05,825 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-19 08:16:05,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:16:05,983 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-19 08:16:05,983 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:16:05,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291405436] [2022-11-19 08:16:05,984 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 08:16:05,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706027708] [2022-11-19 08:16:05,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706027708] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-19 08:16:05,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 08:16:05,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-19 08:16:05,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669773814] [2022-11-19 08:16:05,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:16:05,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:16:05,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:16:05,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:16:05,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:16:05,987 INFO L87 Difference]: Start difference. First operand 1111 states and 1587 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-19 08:16:07,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:16:07,196 INFO L93 Difference]: Finished difference Result 3148 states and 4519 transitions. [2022-11-19 08:16:07,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:16:07,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 143 [2022-11-19 08:16:07,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:16:07,209 INFO L225 Difference]: With dead ends: 3148 [2022-11-19 08:16:07,209 INFO L226 Difference]: Without dead ends: 2055 [2022-11-19 08:16:07,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:16:07,219 INFO L413 NwaCegarLoop]: 1483 mSDtfsCounter, 1420 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1420 SdHoareTripleChecker+Valid, 2605 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:16:07,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1420 Valid, 2605 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-19 08:16:07,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2055 states. [2022-11-19 08:16:07,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2055 to 2021. [2022-11-19 08:16:07,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2021 states, 1366 states have (on average 1.4055636896046853) internal successors, (1920), 1388 states have internal predecessors, (1920), 492 states have call successors, (492), 163 states have call predecessors, (492), 162 states have return successors, (491), 483 states have call predecessors, (491), 491 states have call successors, (491) [2022-11-19 08:16:07,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2021 states to 2021 states and 2903 transitions. [2022-11-19 08:16:07,349 INFO L78 Accepts]: Start accepts. Automaton has 2021 states and 2903 transitions. Word has length 143 [2022-11-19 08:16:07,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:16:07,350 INFO L495 AbstractCegarLoop]: Abstraction has 2021 states and 2903 transitions. [2022-11-19 08:16:07,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-19 08:16:07,351 INFO L276 IsEmpty]: Start isEmpty. Operand 2021 states and 2903 transitions. [2022-11-19 08:16:07,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-19 08:16:07,360 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:16:07,361 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:16:07,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 08:16:07,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:16:07,576 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:16:07,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:16:07,576 INFO L85 PathProgramCache]: Analyzing trace with hash 724969147, now seen corresponding path program 1 times [2022-11-19 08:16:07,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:16:07,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919791062] [2022-11-19 08:16:07,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:16:07,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:16:07,678 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 08:16:07,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1278102700] [2022-11-19 08:16:07,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:16:07,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:16:07,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:16:07,680 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:16:07,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 08:16:08,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:16:08,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 2594 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 08:16:08,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:16:08,675 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 08:16:08,675 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:16:08,675 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:16:08,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919791062] [2022-11-19 08:16:08,676 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 08:16:08,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278102700] [2022-11-19 08:16:08,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278102700] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:16:08,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:16:08,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:16:08,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130998854] [2022-11-19 08:16:08,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:16:08,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:16:08,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:16:08,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:16:08,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:16:08,679 INFO L87 Difference]: Start difference. First operand 2021 states and 2903 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-19 08:16:10,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:16:10,279 INFO L93 Difference]: Finished difference Result 4123 states and 5937 transitions. [2022-11-19 08:16:10,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 08:16:10,280 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 144 [2022-11-19 08:16:10,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:16:10,292 INFO L225 Difference]: With dead ends: 4123 [2022-11-19 08:16:10,293 INFO L226 Difference]: Without dead ends: 2120 [2022-11-19 08:16:10,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:16:10,301 INFO L413 NwaCegarLoop]: 1339 mSDtfsCounter, 223 mSDsluCounter, 2370 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 3709 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-19 08:16:10,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 3709 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-19 08:16:10,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2120 states. [2022-11-19 08:16:10,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2120 to 2022. [2022-11-19 08:16:10,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2022 states, 1367 states have (on average 1.403803950256035) internal successors, (1919), 1389 states have internal predecessors, (1919), 492 states have call successors, (492), 163 states have call predecessors, (492), 162 states have return successors, (491), 483 states have call predecessors, (491), 491 states have call successors, (491) [2022-11-19 08:16:10,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2022 states to 2022 states and 2902 transitions. [2022-11-19 08:16:10,450 INFO L78 Accepts]: Start accepts. Automaton has 2022 states and 2902 transitions. Word has length 144 [2022-11-19 08:16:10,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:16:10,451 INFO L495 AbstractCegarLoop]: Abstraction has 2022 states and 2902 transitions. [2022-11-19 08:16:10,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-19 08:16:10,451 INFO L276 IsEmpty]: Start isEmpty. Operand 2022 states and 2902 transitions. [2022-11-19 08:16:10,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-19 08:16:10,459 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:16:10,459 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:16:10,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 08:16:10,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:16:10,670 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:16:10,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:16:10,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1906082555, now seen corresponding path program 1 times [2022-11-19 08:16:10,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:16:10,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615052970] [2022-11-19 08:16:10,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:16:10,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:16:10,759 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 08:16:10,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1146754729] [2022-11-19 08:16:10,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:16:10,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:16:10,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:16:10,761 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:16:10,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 08:16:11,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:16:11,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 2627 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 08:16:11,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:16:11,807 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 08:16:11,807 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:16:11,808 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:16:11,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615052970] [2022-11-19 08:16:11,808 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 08:16:11,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146754729] [2022-11-19 08:16:11,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146754729] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:16:11,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:16:11,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:16:11,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352596491] [2022-11-19 08:16:11,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:16:11,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:16:11,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:16:11,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:16:11,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:16:11,812 INFO L87 Difference]: Start difference. First operand 2022 states and 2902 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-19 08:16:13,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:16:13,378 INFO L93 Difference]: Finished difference Result 4125 states and 5933 transitions. [2022-11-19 08:16:13,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 08:16:13,379 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 154 [2022-11-19 08:16:13,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:16:13,394 INFO L225 Difference]: With dead ends: 4125 [2022-11-19 08:16:13,395 INFO L226 Difference]: Without dead ends: 2121 [2022-11-19 08:16:13,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:16:13,405 INFO L413 NwaCegarLoop]: 1329 mSDtfsCounter, 211 mSDsluCounter, 2360 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 3689 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-19 08:16:13,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 3689 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 669 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-19 08:16:13,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2121 states. [2022-11-19 08:16:13,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2121 to 2022. [2022-11-19 08:16:13,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2022 states, 1367 states have (on average 1.403803950256035) internal successors, (1919), 1389 states have internal predecessors, (1919), 492 states have call successors, (492), 163 states have call predecessors, (492), 162 states have return successors, (491), 483 states have call predecessors, (491), 491 states have call successors, (491) [2022-11-19 08:16:13,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2022 states to 2022 states and 2902 transitions. [2022-11-19 08:16:13,635 INFO L78 Accepts]: Start accepts. Automaton has 2022 states and 2902 transitions. Word has length 154 [2022-11-19 08:16:13,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:16:13,636 INFO L495 AbstractCegarLoop]: Abstraction has 2022 states and 2902 transitions. [2022-11-19 08:16:13,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-19 08:16:13,637 INFO L276 IsEmpty]: Start isEmpty. Operand 2022 states and 2902 transitions. [2022-11-19 08:16:13,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-11-19 08:16:13,648 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:16:13,649 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:16:13,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 08:16:13,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-19 08:16:13,862 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:16:13,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:16:13,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1166306403, now seen corresponding path program 1 times [2022-11-19 08:16:13,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:16:13,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634411617] [2022-11-19 08:16:13,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:16:13,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:16:14,029 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 08:16:14,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [638824651] [2022-11-19 08:16:14,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:16:14,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:16:14,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:16:14,032 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:16:14,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-19 08:16:15,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:16:15,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 2865 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-19 08:16:15,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:16:15,269 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-19 08:16:15,269 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:16:15,269 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:16:15,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634411617] [2022-11-19 08:16:15,270 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 08:16:15,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638824651] [2022-11-19 08:16:15,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638824651] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:16:15,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:16:15,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 08:16:15,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817291764] [2022-11-19 08:16:15,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:16:15,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 08:16:15,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:16:15,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 08:16:15,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-19 08:16:15,274 INFO L87 Difference]: Start difference. First operand 2022 states and 2902 transitions. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 4 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2022-11-19 08:16:17,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:16:17,326 INFO L93 Difference]: Finished difference Result 4193 states and 6037 transitions. [2022-11-19 08:16:17,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:16:17,327 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 4 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 189 [2022-11-19 08:16:17,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:16:17,343 INFO L225 Difference]: With dead ends: 4193 [2022-11-19 08:16:17,343 INFO L226 Difference]: Without dead ends: 2189 [2022-11-19 08:16:17,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:16:17,353 INFO L413 NwaCegarLoop]: 1364 mSDtfsCounter, 309 mSDsluCounter, 3744 mSDsCounter, 0 mSdLazyCounter, 1150 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 5108 SdHoareTripleChecker+Invalid, 1185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-19 08:16:17,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 5108 Invalid, 1185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1150 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-19 08:16:17,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2189 states. [2022-11-19 08:16:17,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2189 to 2028. [2022-11-19 08:16:17,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2028 states, 1371 states have (on average 1.4026258205689277) internal successors, (1923), 1393 states have internal predecessors, (1923), 494 states have call successors, (494), 163 states have call predecessors, (494), 162 states have return successors, (493), 485 states have call predecessors, (493), 493 states have call successors, (493) [2022-11-19 08:16:17,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2028 states to 2028 states and 2910 transitions. [2022-11-19 08:16:17,459 INFO L78 Accepts]: Start accepts. Automaton has 2028 states and 2910 transitions. Word has length 189 [2022-11-19 08:16:17,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:16:17,460 INFO L495 AbstractCegarLoop]: Abstraction has 2028 states and 2910 transitions. [2022-11-19 08:16:17,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 4 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2022-11-19 08:16:17,460 INFO L276 IsEmpty]: Start isEmpty. Operand 2028 states and 2910 transitions. [2022-11-19 08:16:17,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-11-19 08:16:17,469 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:16:17,469 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:16:17,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-19 08:16:17,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:16:17,680 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:16:17,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:16:17,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1901283843, now seen corresponding path program 1 times [2022-11-19 08:16:17,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:16:17,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787933702] [2022-11-19 08:16:17,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:16:17,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:16:17,785 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 08:16:17,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [500527353] [2022-11-19 08:16:17,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:16:17,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:16:17,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:16:17,787 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:16:17,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-19 08:16:18,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:16:18,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 2896 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-19 08:16:18,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:16:19,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:19,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-11-19 08:16:19,564 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-11-19 08:16:19,602 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-19 08:16:19,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:16:19,868 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:16:19,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787933702] [2022-11-19 08:16:19,868 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 08:16:19,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500527353] [2022-11-19 08:16:19,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500527353] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:16:19,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [609635916] [2022-11-19 08:16:19,892 INFO L159 IcfgInterpreter]: Started Sifa with 154 locations of interest [2022-11-19 08:16:19,892 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:16:19,897 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:16:19,902 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:16:19,903 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:16:23,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:23,514 INFO L217 Elim1Store]: Index analysis took 269 ms [2022-11-19 08:16:42,393 WARN L233 SmtUtils]: Spent 18.83s on a formula simplification. DAG size of input: 1754 DAG size of output: 957 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-19 08:16:42,398 INFO L321 Elim1Store]: treesize reduction 2862, result has 33.3 percent of original size [2022-11-19 08:16:42,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 162 select indices, 162 select index equivalence classes, 12882 disjoint index pairs (out of 13041 index pairs), introduced 162 new quantified variables, introduced 318 case distinctions, treesize of input 817 treesize of output 1933 [2022-11-19 08:16:44,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:45,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 160 select indices, 160 select index equivalence classes, 12881 disjoint index pairs (out of 12720 index pairs), introduced 160 new quantified variables, introduced 0 case distinctions, treesize of input 807 treesize of output 1286 [2022-11-19 08:16:55,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:55,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 161 select indices, 161 select index equivalence classes, 12881 disjoint index pairs (out of 12880 index pairs), introduced 161 new quantified variables, introduced 0 case distinctions, treesize of input 806 treesize of output 484 [2022-11-19 08:16:55,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:55,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 162 select indices, 162 select index equivalence classes, 13041 disjoint index pairs (out of 13041 index pairs), introduced 162 new quantified variables, introduced 0 case distinctions, treesize of input 811 treesize of output 487 [2022-11-19 08:16:56,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:16:56,694 INFO L217 Elim1Store]: Index analysis took 279 ms [2022-11-19 08:16:56,764 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 314 select indices, 314 select index equivalence classes, 7488 disjoint index pairs (out of 49141 index pairs), introduced 314 new quantified variables, introduced 0 case distinctions, treesize of input 2548 treesize of output 956 [2022-11-19 08:17:06,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,241 INFO L217 Elim1Store]: Index analysis took 242 ms [2022-11-19 08:17:06,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 314 select indices, 314 select index equivalence classes, 7488 disjoint index pairs (out of 49141 index pairs), introduced 314 new quantified variables, introduced 0 case distinctions, treesize of input 2548 treesize of output 956 [2022-11-19 08:17:06,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:06,965 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 161 select indices, 161 select index equivalence classes, 12881 disjoint index pairs (out of 12880 index pairs), introduced 161 new quantified variables, introduced 0 case distinctions, treesize of input 806 treesize of output 484 [2022-11-19 08:17:07,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:17:07,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 162 select indices, 162 select index equivalence classes, 13041 disjoint index pairs (out of 13041 index pairs), introduced 162 new quantified variables, introduced 0 case distinctions, treesize of input 811 treesize of output 487 [2022-11-19 08:17:20,457 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_zalloc with input of size 2475 for LOIs [2022-11-19 08:17:49,456 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 826 for LOIs [2022-11-19 08:17:49,971 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:19:14,741 WARN L233 SmtUtils]: Spent 1.40m on a formula simplification. DAG size of input: 2352 DAG size of output: 2034 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:20:55,445 WARN L233 SmtUtils]: Spent 1.65m on a formula simplification. DAG size of input: 2475 DAG size of output: 2420 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:22:39,558 WARN L233 SmtUtils]: Spent 1.71m on a formula simplification. DAG size of input: 2483 DAG size of output: 2428 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:24:24,898 WARN L233 SmtUtils]: Spent 1.72m on a formula simplification. DAG size of input: 2489 DAG size of output: 2434 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:24:35,957 WARN L233 SmtUtils]: Spent 10.38s on a formula simplification. DAG size of input: 822 DAG size of output: 819 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:24:47,285 WARN L233 SmtUtils]: Spent 10.61s on a formula simplification. DAG size of input: 826 DAG size of output: 823 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:24:59,458 WARN L233 SmtUtils]: Spent 11.45s on a formula simplification. DAG size of input: 834 DAG size of output: 828 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:25:11,062 WARN L233 SmtUtils]: Spent 10.80s on a formula simplification. DAG size of input: 838 DAG size of output: 832 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:25:23,143 WARN L233 SmtUtils]: Spent 11.21s on a formula simplification. DAG size of input: 826 DAG size of output: 823 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:25:35,110 WARN L233 SmtUtils]: Spent 11.07s on a formula simplification. DAG size of input: 828 DAG size of output: 825 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:25:35,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [609635916] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:25:35,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 08:25:35,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [16] total 26 [2022-11-19 08:25:35,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127133082] [2022-11-19 08:25:35,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:25:35,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-19 08:25:35,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:25:35,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-19 08:25:35,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=887, Unknown=0, NotChecked=0, Total=992 [2022-11-19 08:25:35,150 INFO L87 Difference]: Start difference. First operand 2028 states and 2910 transitions. Second operand has 12 states, 9 states have (on average 12.0) internal successors, (108), 7 states have internal predecessors, (108), 4 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2022-11-19 08:26:21,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:26:23,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:26:23,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:26:23,758 INFO L93 Difference]: Finished difference Result 4050 states and 5816 transitions. [2022-11-19 08:26:23,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-19 08:26:23,760 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 12.0) internal successors, (108), 7 states have internal predecessors, (108), 4 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) Word has length 189 [2022-11-19 08:26:23,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:26:23,771 INFO L225 Difference]: With dead ends: 4050 [2022-11-19 08:26:23,771 INFO L226 Difference]: Without dead ends: 2038 [2022-11-19 08:26:23,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 365 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 465.5s TimeCoverageRelationStatistics Valid=105, Invalid=887, Unknown=0, NotChecked=0, Total=992 [2022-11-19 08:26:23,780 INFO L413 NwaCegarLoop]: 1266 mSDtfsCounter, 3 mSDsluCounter, 5914 mSDsCounter, 0 mSdLazyCounter, 2856 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 7180 SdHoareTripleChecker+Invalid, 4463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1607 IncrementalHoareTripleChecker+Unchecked, 48.3s IncrementalHoareTripleChecker+Time [2022-11-19 08:26:23,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 7180 Invalid, 4463 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 2856 Invalid, 0 Unknown, 1607 Unchecked, 48.3s Time] [2022-11-19 08:26:23,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2038 states. [2022-11-19 08:26:23,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2038 to 2038. [2022-11-19 08:26:23,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2038 states, 1378 states have (on average 1.4013062409288823) internal successors, (1931), 1399 states have internal predecessors, (1931), 496 states have call successors, (496), 165 states have call predecessors, (496), 163 states have return successors, (497), 487 states have call predecessors, (497), 495 states have call successors, (497) [2022-11-19 08:26:23,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2038 states to 2038 states and 2924 transitions. [2022-11-19 08:26:23,940 INFO L78 Accepts]: Start accepts. Automaton has 2038 states and 2924 transitions. Word has length 189 [2022-11-19 08:26:23,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:26:23,940 INFO L495 AbstractCegarLoop]: Abstraction has 2038 states and 2924 transitions. [2022-11-19 08:26:23,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 12.0) internal successors, (108), 7 states have internal predecessors, (108), 4 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2022-11-19 08:26:23,941 INFO L276 IsEmpty]: Start isEmpty. Operand 2038 states and 2924 transitions. [2022-11-19 08:26:23,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-19 08:26:23,950 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:26:23,951 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:26:23,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-19 08:26:24,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-19 08:26:24,163 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:26:24,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:26:24,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1845293210, now seen corresponding path program 1 times [2022-11-19 08:26:24,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:26:24,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811958875] [2022-11-19 08:26:24,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:26:24,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:26:24,273 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 08:26:24,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1071872493] [2022-11-19 08:26:24,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:26:24,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:26:24,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:26:24,285 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:26:24,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-19 08:26:25,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:26:25,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 2911 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-19 08:26:25,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:26:25,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:26:25,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-11-19 08:26:26,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-11-19 08:26:26,157 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-19 08:26:26,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:26:26,552 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:26:26,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811958875] [2022-11-19 08:26:26,553 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 08:26:26,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071872493] [2022-11-19 08:26:26,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071872493] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:26:26,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [972793806] [2022-11-19 08:26:26,559 INFO L159 IcfgInterpreter]: Started Sifa with 154 locations of interest [2022-11-19 08:26:26,560 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:26:26,561 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:26:26,561 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:26:26,561 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:26:29,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:26:29,568 INFO L217 Elim1Store]: Index analysis took 339 ms [2022-11-19 08:26:44,181 WARN L233 SmtUtils]: Spent 14.58s on a formula simplification. DAG size of input: 1434 DAG size of output: 955 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-19 08:26:44,184 INFO L321 Elim1Store]: treesize reduction 1594, result has 47.3 percent of original size [2022-11-19 08:26:44,186 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 160 select indices, 160 select index equivalence classes, 12722 disjoint index pairs (out of 12720 index pairs), introduced 160 new quantified variables, introduced 159 case distinctions, treesize of input 807 treesize of output 1918 [2022-11-19 08:26:47,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:26:47,496 INFO L217 Elim1Store]: Index analysis took 667 ms [2022-11-19 08:27:08,945 WARN L233 SmtUtils]: Spent 21.41s on a formula simplification. DAG size of input: 1754 DAG size of output: 957 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-19 08:27:08,948 INFO L321 Elim1Store]: treesize reduction 2862, result has 33.3 percent of original size [2022-11-19 08:27:08,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 162 select indices, 162 select index equivalence classes, 12882 disjoint index pairs (out of 13041 index pairs), introduced 162 new quantified variables, introduced 318 case distinctions, treesize of input 817 treesize of output 1933 [2022-11-19 08:27:22,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:22,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:22,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:22,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:22,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:22,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:22,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:22,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:22,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:22,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:22,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:22,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:22,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:22,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:22,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:22,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:22,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:23,237 INFO L217 Elim1Store]: Index analysis took 295 ms [2022-11-19 08:27:23,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 314 select indices, 314 select index equivalence classes, 7488 disjoint index pairs (out of 49141 index pairs), introduced 314 new quantified variables, introduced 0 case distinctions, treesize of input 2548 treesize of output 956 [2022-11-19 08:27:24,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:24,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 161 select indices, 161 select index equivalence classes, 12881 disjoint index pairs (out of 12880 index pairs), introduced 161 new quantified variables, introduced 0 case distinctions, treesize of input 806 treesize of output 484 [2022-11-19 08:27:24,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:24,801 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 162 select indices, 162 select index equivalence classes, 13041 disjoint index pairs (out of 13041 index pairs), introduced 162 new quantified variables, introduced 0 case distinctions, treesize of input 811 treesize of output 487 [2022-11-19 08:27:33,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,102 INFO L217 Elim1Store]: Index analysis took 251 ms [2022-11-19 08:27:34,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 314 select indices, 314 select index equivalence classes, 7488 disjoint index pairs (out of 49141 index pairs), introduced 314 new quantified variables, introduced 0 case distinctions, treesize of input 2548 treesize of output 956 [2022-11-19 08:27:34,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:34,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 162 select indices, 162 select index equivalence classes, 13041 disjoint index pairs (out of 13041 index pairs), introduced 162 new quantified variables, introduced 0 case distinctions, treesize of input 811 treesize of output 487 [2022-11-19 08:27:35,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:35,415 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 161 select indices, 161 select index equivalence classes, 12881 disjoint index pairs (out of 12880 index pairs), introduced 161 new quantified variables, introduced 0 case distinctions, treesize of input 806 treesize of output 484 [2022-11-19 08:27:39,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-19 08:27:39,479 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-19 08:27:39,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-19 08:27:39,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 63 [2022-11-19 08:27:39,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 65 [2022-11-19 08:27:39,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 63 [2022-11-19 08:27:39,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-19 08:27:39,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-19 08:27:39,573 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-19 08:27:40,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:40,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:40,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:40,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:40,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:40,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:40,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:40,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:40,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:40,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:40,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:40,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:40,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:40,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:40,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:40,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:40,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:40,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:40,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:40,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:40,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:40,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:40,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:40,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:40,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:40,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:40,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:40,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:40,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:40,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 37 select indices, 37 select index equivalence classes, 463 disjoint index pairs (out of 666 index pairs), introduced 37 new quantified variables, introduced 0 case distinctions, treesize of input 318 treesize of output 112 [2022-11-19 08:27:40,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:40,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:40,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:40,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:40,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:40,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:40,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:40,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:40,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:40,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:40,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:40,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:40,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:40,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:40,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:40,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:40,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:40,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:40,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:40,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:40,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:40,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:40,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:40,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:40,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:40,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:40,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:40,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:40,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:40,561 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 37 select indices, 37 select index equivalence classes, 463 disjoint index pairs (out of 666 index pairs), introduced 37 new quantified variables, introduced 0 case distinctions, treesize of input 318 treesize of output 112 [2022-11-19 08:27:41,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 37 select indices, 37 select index equivalence classes, 463 disjoint index pairs (out of 666 index pairs), introduced 37 new quantified variables, introduced 0 case distinctions, treesize of input 318 treesize of output 112 [2022-11-19 08:27:41,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 37 select indices, 37 select index equivalence classes, 463 disjoint index pairs (out of 666 index pairs), introduced 37 new quantified variables, introduced 0 case distinctions, treesize of input 318 treesize of output 112 [2022-11-19 08:27:43,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-19 08:27:43,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-19 08:27:45,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 08:27:45,397 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 08:27:46,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 08:27:46,117 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 08:27:47,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-19 08:27:51,778 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-19 08:27:51,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-19 08:27:51,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-19 08:28:27,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-19 08:28:27,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:28:27,713 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Maybe an infinite loop at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:345) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:285) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostconditionCall(PredicateTransformer.java:157) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.postCall(SymbolicTools.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:218) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:207) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpretForSingleMarker(DagInterpreter.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:125) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:98) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 08:28:27,716 INFO L158 Benchmark]: Toolchain (without parser) took 756762.97ms. Allocated memory was 125.8MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 86.5MB in the beginning and 748.2MB in the end (delta: -661.7MB). Peak memory consumption was 1.0GB. Max. memory is 16.1GB. [2022-11-19 08:28:27,716 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 86.0MB. Free memory was 42.8MB in the beginning and 42.7MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 08:28:27,717 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2093.36ms. Allocated memory was 125.8MB in the beginning and 180.4MB in the end (delta: 54.5MB). Free memory was 86.5MB in the beginning and 103.9MB in the end (delta: -17.4MB). Peak memory consumption was 61.2MB. Max. memory is 16.1GB. [2022-11-19 08:28:27,717 INFO L158 Benchmark]: Boogie Procedure Inliner took 340.27ms. Allocated memory is still 180.4MB. Free memory was 103.9MB in the beginning and 117.8MB in the end (delta: -13.9MB). Peak memory consumption was 40.3MB. Max. memory is 16.1GB. [2022-11-19 08:28:27,717 INFO L158 Benchmark]: Boogie Preprocessor took 212.02ms. Allocated memory is still 180.4MB. Free memory was 117.8MB in the beginning and 91.7MB in the end (delta: 26.1MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-11-19 08:28:27,718 INFO L158 Benchmark]: RCFGBuilder took 5152.33ms. Allocated memory was 180.4MB in the beginning and 339.7MB in the end (delta: 159.4MB). Free memory was 91.7MB in the beginning and 169.1MB in the end (delta: -77.4MB). Peak memory consumption was 175.8MB. Max. memory is 16.1GB. [2022-11-19 08:28:27,718 INFO L158 Benchmark]: TraceAbstraction took 748943.31ms. Allocated memory was 339.7MB in the beginning and 1.6GB in the end (delta: 1.2GB). Free memory was 169.1MB in the beginning and 748.2MB in the end (delta: -579.0MB). Peak memory consumption was 902.9MB. Max. memory is 16.1GB. [2022-11-19 08:28:27,721 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 86.0MB. Free memory was 42.8MB in the beginning and 42.7MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2093.36ms. Allocated memory was 125.8MB in the beginning and 180.4MB in the end (delta: 54.5MB). Free memory was 86.5MB in the beginning and 103.9MB in the end (delta: -17.4MB). Peak memory consumption was 61.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 340.27ms. Allocated memory is still 180.4MB. Free memory was 103.9MB in the beginning and 117.8MB in the end (delta: -13.9MB). Peak memory consumption was 40.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 212.02ms. Allocated memory is still 180.4MB. Free memory was 117.8MB in the beginning and 91.7MB in the end (delta: 26.1MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * RCFGBuilder took 5152.33ms. Allocated memory was 180.4MB in the beginning and 339.7MB in the end (delta: 159.4MB). Free memory was 91.7MB in the beginning and 169.1MB in the end (delta: -77.4MB). Peak memory consumption was 175.8MB. Max. memory is 16.1GB. * TraceAbstraction took 748943.31ms. Allocated memory was 339.7MB in the beginning and 1.6GB in the end (delta: 1.2GB). Free memory was 169.1MB in the beginning and 748.2MB in the end (delta: -579.0MB). Peak memory consumption was 902.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Maybe an infinite loop de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Maybe an infinite loop: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-19 08:28:27,945 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2022-11-19 08:28:27,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--misc--usbtest.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS --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 045b49e5089f039c3b28eef4cf3a9c907cbda8f22472af0061e42bad883dd2f9 --- 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-8393723 [2022-11-19 08:28:30,174 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:28:30,177 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:28:30,215 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:28:30,216 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:28:30,220 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:28:30,223 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:28:30,227 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:28:30,230 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:28:30,238 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:28:30,239 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:28:30,242 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:28:30,242 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:28:30,245 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:28:30,246 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:28:30,248 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:28:30,249 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:28:30,251 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:28:30,257 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:28:30,261 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:28:30,265 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:28:30,267 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:28:30,269 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:28:30,271 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:28:30,277 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:28:30,282 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:28:30,283 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:28:30,284 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:28:30,285 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:28:30,286 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:28:30,287 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:28:30,288 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:28:30,290 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:28:30,290 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:28:30,291 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:28:30,292 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:28:30,293 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:28:30,293 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:28:30,293 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:28:30,295 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:28:30,296 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:28:30,301 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-19 08:28:30,351 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:28:30,351 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:28:30,352 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:28:30,352 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:28:30,353 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:28:30,353 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:28:30,353 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:28:30,354 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:28:30,354 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:28:30,354 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:28:30,355 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:28:30,355 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:28:30,357 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:28:30,357 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:28:30,358 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:28:30,358 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:28:30,358 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:28:30,358 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 08:28:30,358 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 08:28:30,359 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 08:28:30,359 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:28:30,359 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:28:30,359 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:28:30,360 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:28:30,360 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 08:28:30,360 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:28:30,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:28:30,361 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:28:30,361 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:28:30,361 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:28:30,361 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 08:28:30,361 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 08:28:30,362 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:28:30,362 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:28:30,363 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 08:28:30,363 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 045b49e5089f039c3b28eef4cf3a9c907cbda8f22472af0061e42bad883dd2f9 [2022-11-19 08:28:30,764 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:28:30,792 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:28:30,795 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:28:30,796 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:28:30,798 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:28:30,801 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--misc--usbtest.ko-entry_point.cil.out.i [2022-11-19 08:28:30,874 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/data/f9692f6b4/1e540b77f34c4bb9a1998d86748dc1d8/FLAGb230402e4 [2022-11-19 08:28:31,797 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:28:31,797 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--misc--usbtest.ko-entry_point.cil.out.i [2022-11-19 08:28:31,846 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/data/f9692f6b4/1e540b77f34c4bb9a1998d86748dc1d8/FLAGb230402e4 [2022-11-19 08:28:32,279 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/data/f9692f6b4/1e540b77f34c4bb9a1998d86748dc1d8 [2022-11-19 08:28:32,282 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:28:32,284 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:28:32,285 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:28:32,286 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:28:32,290 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:28:32,291 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:28:32" (1/1) ... [2022-11-19 08:28:32,292 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22564850 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:28:32, skipping insertion in model container [2022-11-19 08:28:32,292 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:28:32" (1/1) ... [2022-11-19 08:28:32,302 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:28:32,420 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:28:33,007 WARN L1258 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3528] [2022-11-19 08:28:33,008 WARN L1258 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3529-3530] [2022-11-19 08:28:33,336 WARN L234 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_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--misc--usbtest.ko-entry_point.cil.out.i[105797,105810] [2022-11-19 08:28:34,119 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:28:34,144 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-19 08:28:34,192 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:28:34,275 WARN L1258 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3528] [2022-11-19 08:28:34,276 WARN L1258 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3529-3530] [2022-11-19 08:28:34,285 WARN L234 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_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--misc--usbtest.ko-entry_point.cil.out.i[105797,105810] [2022-11-19 08:28:34,484 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:28:34,493 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:28:34,594 WARN L1258 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3528] [2022-11-19 08:28:34,595 WARN L1258 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3529-3530] [2022-11-19 08:28:34,604 WARN L234 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_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--misc--usbtest.ko-entry_point.cil.out.i[105797,105810] [2022-11-19 08:28:34,797 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:28:34,848 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:28:34,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:28:34 WrapperNode [2022-11-19 08:28:34,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:28:34,850 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:28:34,850 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:28:34,850 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:28:34,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:28:34" (1/1) ... [2022-11-19 08:28:34,925 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:28:34" (1/1) ... [2022-11-19 08:28:35,115 INFO L138 Inliner]: procedures = 198, calls = 1742, calls flagged for inlining = 77, calls inlined = 68, statements flattened = 4352 [2022-11-19 08:28:35,115 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:28:35,116 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:28:35,120 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:28:35,120 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:28:35,129 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:28:34" (1/1) ... [2022-11-19 08:28:35,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:28:34" (1/1) ... [2022-11-19 08:28:35,170 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:28:34" (1/1) ... [2022-11-19 08:28:35,170 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:28:34" (1/1) ... [2022-11-19 08:28:35,285 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:28:34" (1/1) ... [2022-11-19 08:28:35,301 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:28:34" (1/1) ... [2022-11-19 08:28:35,380 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:28:34" (1/1) ... [2022-11-19 08:28:35,392 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:28:34" (1/1) ... [2022-11-19 08:28:35,418 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:28:35,419 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:28:35,419 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:28:35,419 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:28:35,420 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:28:34" (1/1) ... [2022-11-19 08:28:35,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:28:35,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:28:35,464 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:28:35,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:28:35,507 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-19 08:28:35,507 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-11-19 08:28:35,508 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-11-19 08:28:35,508 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-11-19 08:28:35,508 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-11-19 08:28:35,508 INFO L130 BoogieDeclarations]: Found specification of procedure free_sglist [2022-11-19 08:28:35,508 INFO L138 BoogieDeclarations]: Found implementation of procedure free_sglist [2022-11-19 08:28:35,508 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-19 08:28:35,509 INFO L130 BoogieDeclarations]: Found specification of procedure simple_check_buf [2022-11-19 08:28:35,509 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_check_buf [2022-11-19 08:28:35,509 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-19 08:28:35,509 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-11-19 08:28:35,509 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 08:28:35,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 08:28:35,510 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2022-11-19 08:28:35,510 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2022-11-19 08:28:35,510 INFO L130 BoogieDeclarations]: Found specification of procedure perform_sglist [2022-11-19 08:28:35,511 INFO L138 BoogieDeclarations]: Found implementation of procedure perform_sglist [2022-11-19 08:28:35,511 INFO L130 BoogieDeclarations]: Found specification of procedure test_unaligned_bulk [2022-11-19 08:28:35,511 INFO L138 BoogieDeclarations]: Found implementation of procedure test_unaligned_bulk [2022-11-19 08:28:35,511 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-19 08:28:35,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-19 08:28:35,511 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_sglist [2022-11-19 08:28:35,512 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_sglist [2022-11-19 08:28:35,512 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 08:28:35,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 08:28:35,513 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2022-11-19 08:28:35,513 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2022-11-19 08:28:35,513 INFO L130 BoogieDeclarations]: Found specification of procedure set_altsetting [2022-11-19 08:28:35,513 INFO L138 BoogieDeclarations]: Found implementation of procedure set_altsetting [2022-11-19 08:28:35,513 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-19 08:28:35,513 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-19 08:28:35,514 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2022-11-19 08:28:35,514 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2022-11-19 08:28:35,514 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-19 08:28:35,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-19 08:28:35,514 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2022-11-19 08:28:35,514 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2022-11-19 08:28:35,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 08:28:35,515 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 08:28:35,516 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2022-11-19 08:28:35,516 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2022-11-19 08:28:35,517 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 08:28:35,517 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 08:28:35,517 INFO L130 BoogieDeclarations]: Found specification of procedure test_halt [2022-11-19 08:28:35,518 INFO L138 BoogieDeclarations]: Found implementation of procedure test_halt [2022-11-19 08:28:35,518 INFO L130 BoogieDeclarations]: Found specification of procedure ctrl_out [2022-11-19 08:28:35,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ctrl_out [2022-11-19 08:28:35,518 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-19 08:28:35,518 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-19 08:28:35,518 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_status [2022-11-19 08:28:35,519 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_status [2022-11-19 08:28:35,519 INFO L130 BoogieDeclarations]: Found specification of procedure is_good_config [2022-11-19 08:28:35,519 INFO L138 BoogieDeclarations]: Found implementation of procedure is_good_config [2022-11-19 08:28:35,520 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2022-11-19 08:28:35,520 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2022-11-19 08:28:35,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 08:28:35,520 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unlink_urb [2022-11-19 08:28:35,520 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unlink_urb [2022-11-19 08:28:35,521 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2022-11-19 08:28:35,521 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2022-11-19 08:28:35,521 INFO L130 BoogieDeclarations]: Found specification of procedure testdev_to_usbdev [2022-11-19 08:28:35,522 INFO L138 BoogieDeclarations]: Found implementation of procedure testdev_to_usbdev [2022-11-19 08:28:35,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 08:28:35,522 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2022-11-19 08:28:35,522 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2022-11-19 08:28:35,522 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-11-19 08:28:35,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-11-19 08:28:35,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-19 08:28:35,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-19 08:28:35,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-19 08:28:35,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 08:28:35,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-19 08:28:35,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 08:28:35,524 INFO L130 BoogieDeclarations]: Found specification of procedure simple_alloc_urb [2022-11-19 08:28:35,524 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_alloc_urb [2022-11-19 08:28:35,524 INFO L130 BoogieDeclarations]: Found specification of procedure simple_free_urb [2022-11-19 08:28:35,525 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_free_urb [2022-11-19 08:28:35,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-11-19 08:28:35,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-19 08:28:35,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-19 08:28:35,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-11-19 08:28:35,526 INFO L130 BoogieDeclarations]: Found specification of procedure do_gettimeofday [2022-11-19 08:28:35,527 INFO L138 BoogieDeclarations]: Found implementation of procedure do_gettimeofday [2022-11-19 08:28:35,527 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-19 08:28:35,528 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-19 08:28:35,528 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-19 08:28:35,528 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-19 08:28:35,528 INFO L130 BoogieDeclarations]: Found specification of procedure usbtest_ioctl [2022-11-19 08:28:35,528 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtest_ioctl [2022-11-19 08:28:35,529 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-11-19 08:28:35,529 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-11-19 08:28:35,529 INFO L130 BoogieDeclarations]: Found specification of procedure usb_clear_halt [2022-11-19 08:28:35,529 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_clear_halt [2022-11-19 08:28:35,529 INFO L130 BoogieDeclarations]: Found specification of procedure usbtest_disconnect [2022-11-19 08:28:35,529 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtest_disconnect [2022-11-19 08:28:35,530 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-11-19 08:28:35,530 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-11-19 08:28:35,530 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-19 08:28:35,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-19 08:28:35,531 INFO L130 BoogieDeclarations]: Found specification of procedure sg_page [2022-11-19 08:28:35,531 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_page [2022-11-19 08:28:35,531 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-19 08:28:35,532 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-19 08:28:35,535 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc_array [2022-11-19 08:28:35,535 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc_array [2022-11-19 08:28:35,535 INFO L130 BoogieDeclarations]: Found specification of procedure test_iso_queue [2022-11-19 08:28:35,536 INFO L138 BoogieDeclarations]: Found implementation of procedure test_iso_queue [2022-11-19 08:28:35,538 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-19 08:28:35,538 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-19 08:28:35,539 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-19 08:28:35,539 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-19 08:28:35,539 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-19 08:28:35,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-19 08:28:35,545 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-19 08:28:35,545 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-19 08:28:35,545 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2022-11-19 08:28:35,545 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2022-11-19 08:28:35,545 INFO L130 BoogieDeclarations]: Found specification of procedure verify_not_halted [2022-11-19 08:28:35,545 INFO L138 BoogieDeclarations]: Found implementation of procedure verify_not_halted [2022-11-19 08:28:35,546 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-11-19 08:28:35,546 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-11-19 08:28:35,546 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 08:28:35,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 08:28:35,546 INFO L130 BoogieDeclarations]: Found specification of procedure usbtest_alloc_urb [2022-11-19 08:28:35,546 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtest_alloc_urb [2022-11-19 08:28:35,546 INFO L130 BoogieDeclarations]: Found specification of procedure unlink1 [2022-11-19 08:28:35,547 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink1 [2022-11-19 08:28:35,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 08:28:35,547 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2022-11-19 08:28:35,547 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2022-11-19 08:28:35,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:28:35,547 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion [2022-11-19 08:28:35,547 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion [2022-11-19 08:28:35,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 08:28:35,548 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-11-19 08:28:35,548 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-11-19 08:28:35,548 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2022-11-19 08:28:35,548 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2022-11-19 08:28:35,548 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_simple [2022-11-19 08:28:35,548 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_simple [2022-11-19 08:28:35,549 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2022-11-19 08:28:35,549 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2022-11-19 08:28:35,549 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-11-19 08:28:35,549 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-11-19 08:28:35,549 INFO L130 BoogieDeclarations]: Found specification of procedure simple_io [2022-11-19 08:28:35,549 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_io [2022-11-19 08:28:35,549 INFO L130 BoogieDeclarations]: Found specification of procedure simple_fill_buf [2022-11-19 08:28:35,550 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_fill_buf [2022-11-19 08:28:35,550 INFO L130 BoogieDeclarations]: Found specification of procedure buffer_offset [2022-11-19 08:28:35,550 INFO L138 BoogieDeclarations]: Found implementation of procedure buffer_offset [2022-11-19 08:28:35,550 INFO L130 BoogieDeclarations]: Found specification of procedure check_guard_bytes [2022-11-19 08:28:35,550 INFO L138 BoogieDeclarations]: Found implementation of procedure check_guard_bytes [2022-11-19 08:28:35,550 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-11-19 08:28:35,550 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-11-19 08:28:35,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:28:35,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:28:35,551 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_descriptor [2022-11-19 08:28:35,551 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_descriptor [2022-11-19 08:28:36,431 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:28:36,435 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:28:41,329 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 08:28:59,697 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:28:59,723 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:28:59,723 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 08:28:59,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:28:59 BoogieIcfgContainer [2022-11-19 08:28:59,728 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:28:59,732 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:28:59,732 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:28:59,735 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:28:59,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:28:32" (1/3) ... [2022-11-19 08:28:59,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6da8a0bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:28:59, skipping insertion in model container [2022-11-19 08:28:59,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:28:34" (2/3) ... [2022-11-19 08:28:59,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6da8a0bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:28:59, skipping insertion in model container [2022-11-19 08:28:59,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:28:59" (3/3) ... [2022-11-19 08:28:59,738 INFO L112 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--misc--usbtest.ko-entry_point.cil.out.i [2022-11-19 08:28:59,757 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:28:59,757 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 08:28:59,857 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:28:59,866 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;@2784d079, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:28:59,866 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 08:28:59,879 INFO L276 IsEmpty]: Start isEmpty. Operand has 1283 states, 957 states have (on average 1.4169278996865204) internal successors, (1356), 972 states have internal predecessors, (1356), 256 states have call successors, (256), 69 states have call predecessors, (256), 68 states have return successors, (253), 250 states have call predecessors, (253), 253 states have call successors, (253) [2022-11-19 08:28:59,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-19 08:28:59,895 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:28:59,895 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:28:59,902 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:28:59,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:28:59,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1643332549, now seen corresponding path program 1 times [2022-11-19 08:28:59,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:28:59,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1991445930] [2022-11-19 08:28:59,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:28:59,933 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 08:28:59,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:28:59,939 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 08:28:59,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-19 08:29:01,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:29:01,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 1043 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 08:29:01,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:29:01,157 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 08:29:01,158 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:29:01,159 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:29:01,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1991445930] [2022-11-19 08:29:01,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1991445930] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:29:01,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:29:01,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:29:01,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724906908] [2022-11-19 08:29:01,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:29:01,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:29:01,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:29:01,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:29:01,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:29:01,203 INFO L87 Difference]: Start difference. First operand has 1283 states, 957 states have (on average 1.4169278996865204) internal successors, (1356), 972 states have internal predecessors, (1356), 256 states have call successors, (256), 69 states have call predecessors, (256), 68 states have return successors, (253), 250 states have call predecessors, (253), 253 states have call successors, (253) Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-19 08:29:01,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:29:01,775 INFO L93 Difference]: Finished difference Result 2564 states and 3821 transitions. [2022-11-19 08:29:01,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 08:29:01,778 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 39 [2022-11-19 08:29:01,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:29:01,802 INFO L225 Difference]: With dead ends: 2564 [2022-11-19 08:29:01,803 INFO L226 Difference]: Without dead ends: 1266 [2022-11-19 08:29:01,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:29:01,828 INFO L413 NwaCegarLoop]: 1853 mSDtfsCounter, 2 mSDsluCounter, 3695 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 5548 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:29:01,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 5548 Invalid, 37 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 08:29:01,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1266 states. [2022-11-19 08:29:01,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1266 to 1266. [2022-11-19 08:29:01,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1266 states, 944 states have (on average 1.409957627118644) internal successors, (1331), 955 states have internal predecessors, (1331), 253 states have call successors, (253), 68 states have call predecessors, (253), 68 states have return successors, (258), 249 states have call predecessors, (258), 252 states have call successors, (258) [2022-11-19 08:29:01,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1266 states to 1266 states and 1842 transitions. [2022-11-19 08:29:01,987 INFO L78 Accepts]: Start accepts. Automaton has 1266 states and 1842 transitions. Word has length 39 [2022-11-19 08:29:01,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:29:01,987 INFO L495 AbstractCegarLoop]: Abstraction has 1266 states and 1842 transitions. [2022-11-19 08:29:01,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-19 08:29:01,988 INFO L276 IsEmpty]: Start isEmpty. Operand 1266 states and 1842 transitions. [2022-11-19 08:29:01,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-19 08:29:01,991 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:29:01,991 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:29:02,012 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-19 08:29:02,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 08:29:02,207 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:29:02,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:29:02,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1293972681, now seen corresponding path program 1 times [2022-11-19 08:29:02,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:29:02,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2139069038] [2022-11-19 08:29:02,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:29:02,217 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 08:29:02,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:29:02,219 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 08:29:02,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-19 08:29:03,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:29:03,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 1054 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 08:29:03,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:29:03,328 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 08:29:03,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:29:03,599 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 08:29:03,599 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:29:03,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2139069038] [2022-11-19 08:29:03,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2139069038] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:29:03,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [255990457] [2022-11-19 08:29:03,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:29:03,600 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 08:29:03,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 08:29:03,607 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 08:29:03,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-19 08:29:04,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:29:04,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 1054 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 08:29:04,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:29:04,768 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-19 08:29:04,768 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:29:04,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [255990457] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:29:04,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 08:29:04,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2022-11-19 08:29:04,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106088156] [2022-11-19 08:29:04,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:29:04,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:29:04,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:29:04,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:29:04,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 08:29:04,773 INFO L87 Difference]: Start difference. First operand 1266 states and 1842 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-19 08:29:05,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:29:05,068 INFO L93 Difference]: Finished difference Result 2563 states and 3721 transitions. [2022-11-19 08:29:05,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:29:05,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 40 [2022-11-19 08:29:05,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:29:05,077 INFO L225 Difference]: With dead ends: 2563 [2022-11-19 08:29:05,078 INFO L226 Difference]: Without dead ends: 1304 [2022-11-19 08:29:05,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 08:29:05,084 INFO L413 NwaCegarLoop]: 1834 mSDtfsCounter, 52 mSDsluCounter, 1794 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 3628 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:29:05,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 3628 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 08:29:05,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2022-11-19 08:29:05,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1300. [2022-11-19 08:29:05,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1300 states, 972 states have (on average 1.4074074074074074) internal successors, (1368), 984 states have internal predecessors, (1368), 255 states have call successors, (255), 72 states have call predecessors, (255), 72 states have return successors, (260), 250 states have call predecessors, (260), 254 states have call successors, (260) [2022-11-19 08:29:05,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1300 states to 1300 states and 1883 transitions. [2022-11-19 08:29:05,156 INFO L78 Accepts]: Start accepts. Automaton has 1300 states and 1883 transitions. Word has length 40 [2022-11-19 08:29:05,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:29:05,156 INFO L495 AbstractCegarLoop]: Abstraction has 1300 states and 1883 transitions. [2022-11-19 08:29:05,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-19 08:29:05,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1300 states and 1883 transitions. [2022-11-19 08:29:05,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-19 08:29:05,159 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:29:05,159 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-11-19 08:29:05,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-11-19 08:29:05,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-19 08:29:05,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 08:29:05,569 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:29:05,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:29:05,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1462852719, now seen corresponding path program 1 times [2022-11-19 08:29:05,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:29:05,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1055557521] [2022-11-19 08:29:05,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:29:05,571 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 08:29:05,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:29:05,572 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 08:29:05,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-19 08:29:06,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:29:06,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 1131 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 08:29:06,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:29:06,628 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-19 08:29:06,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:29:06,890 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 08:29:06,891 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:29:06,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1055557521] [2022-11-19 08:29:06,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1055557521] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:29:06,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [258848865] [2022-11-19 08:29:06,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:29:06,891 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 08:29:06,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 08:29:06,895 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 08:29:06,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2022-11-19 08:29:07,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:29:07,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 1131 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 08:29:07,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:29:08,278 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-19 08:29:08,278 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:29:08,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [258848865] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:29:08,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 08:29:08,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5, 5] total 9 [2022-11-19 08:29:08,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367597648] [2022-11-19 08:29:08,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:29:08,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:29:08,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:29:08,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:29:08,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 08:29:08,280 INFO L87 Difference]: Start difference. First operand 1300 states and 1883 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-19 08:29:08,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:29:08,362 INFO L93 Difference]: Finished difference Result 1333 states and 1914 transitions. [2022-11-19 08:29:08,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:29:08,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 61 [2022-11-19 08:29:08,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:29:08,376 INFO L225 Difference]: With dead ends: 1333 [2022-11-19 08:29:08,377 INFO L226 Difference]: Without dead ends: 1330 [2022-11-19 08:29:08,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 08:29:08,381 INFO L413 NwaCegarLoop]: 1836 mSDtfsCounter, 1733 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1733 SdHoareTripleChecker+Valid, 1909 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:29:08,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1733 Valid, 1909 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:29:08,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2022-11-19 08:29:08,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1330. [2022-11-19 08:29:08,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1330 states, 991 states have (on average 1.4006054490413724) internal successors, (1388), 1003 states have internal predecessors, (1388), 259 states have call successors, (259), 79 states have call predecessors, (259), 79 states have return successors, (264), 254 states have call predecessors, (264), 258 states have call successors, (264) [2022-11-19 08:29:08,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 1911 transitions. [2022-11-19 08:29:08,468 INFO L78 Accepts]: Start accepts. Automaton has 1330 states and 1911 transitions. Word has length 61 [2022-11-19 08:29:08,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:29:08,469 INFO L495 AbstractCegarLoop]: Abstraction has 1330 states and 1911 transitions. [2022-11-19 08:29:08,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-19 08:29:08,473 INFO L276 IsEmpty]: Start isEmpty. Operand 1330 states and 1911 transitions. [2022-11-19 08:29:08,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-19 08:29:08,490 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:29:08,490 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:29:08,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-19 08:29:08,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2022-11-19 08:29:08,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 08:29:08,914 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:29:08,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:29:08,915 INFO L85 PathProgramCache]: Analyzing trace with hash 402242522, now seen corresponding path program 1 times [2022-11-19 08:29:08,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:29:08,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [950227626] [2022-11-19 08:29:08,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:29:08,917 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 08:29:08,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:29:08,920 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 08:29:08,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-19 08:29:10,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:29:10,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 1578 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 08:29:10,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:29:10,463 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 08:29:10,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:29:10,764 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-19 08:29:10,764 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:29:10,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [950227626] [2022-11-19 08:29:10,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [950227626] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:29:10,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [71803243] [2022-11-19 08:29:10,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:29:10,765 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 08:29:10,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 08:29:10,767 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 08:29:10,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2022-11-19 08:29:11,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:29:12,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 1578 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 08:29:12,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:29:12,082 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-19 08:29:12,083 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:29:12,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [71803243] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:29:12,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 08:29:12,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2022-11-19 08:29:12,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739271049] [2022-11-19 08:29:12,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:29:12,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:29:12,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:29:12,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:29:12,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 08:29:12,085 INFO L87 Difference]: Start difference. First operand 1330 states and 1911 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 08:29:12,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:29:12,240 INFO L93 Difference]: Finished difference Result 2636 states and 3798 transitions. [2022-11-19 08:29:12,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:29:12,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 160 [2022-11-19 08:29:12,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:29:12,251 INFO L225 Difference]: With dead ends: 2636 [2022-11-19 08:29:12,252 INFO L226 Difference]: Without dead ends: 1331 [2022-11-19 08:29:12,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 470 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 08:29:12,261 INFO L413 NwaCegarLoop]: 1832 mSDtfsCounter, 0 mSDsluCounter, 1827 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3659 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:29:12,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3659 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:29:12,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1331 states. [2022-11-19 08:29:12,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1331 to 1331. [2022-11-19 08:29:12,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1331 states, 992 states have (on average 1.4002016129032258) internal successors, (1389), 1004 states have internal predecessors, (1389), 259 states have call successors, (259), 79 states have call predecessors, (259), 79 states have return successors, (264), 254 states have call predecessors, (264), 258 states have call successors, (264) [2022-11-19 08:29:12,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1331 states to 1331 states and 1912 transitions. [2022-11-19 08:29:12,326 INFO L78 Accepts]: Start accepts. Automaton has 1331 states and 1912 transitions. Word has length 160 [2022-11-19 08:29:12,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:29:12,328 INFO L495 AbstractCegarLoop]: Abstraction has 1331 states and 1912 transitions. [2022-11-19 08:29:12,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 08:29:12,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1331 states and 1912 transitions. [2022-11-19 08:29:12,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-19 08:29:12,342 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:29:12,343 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:29:12,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2022-11-19 08:29:12,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-19 08:29:12,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 08:29:12,756 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:29:12,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:29:12,757 INFO L85 PathProgramCache]: Analyzing trace with hash 769577282, now seen corresponding path program 1 times [2022-11-19 08:29:12,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:29:12,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1808148032] [2022-11-19 08:29:12,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:29:12,758 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 08:29:12,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:29:12,759 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 08:29:12,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-19 08:29:14,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:29:14,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 1582 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 08:29:14,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:29:14,209 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 08:29:14,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:29:14,499 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-19 08:29:14,499 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:29:14,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1808148032] [2022-11-19 08:29:14,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1808148032] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:29:14,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [619639626] [2022-11-19 08:29:14,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:29:14,500 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 08:29:14,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 08:29:14,503 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 08:29:14,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-11-19 08:29:15,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:29:15,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 1582 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 08:29:15,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:29:15,900 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-19 08:29:15,901 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:29:15,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [619639626] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:29:15,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 08:29:15,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2022-11-19 08:29:15,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981980705] [2022-11-19 08:29:15,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:29:15,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:29:15,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:29:15,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:29:15,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 08:29:15,903 INFO L87 Difference]: Start difference. First operand 1331 states and 1912 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-19 08:29:16,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:29:16,229 INFO L93 Difference]: Finished difference Result 2728 states and 3905 transitions. [2022-11-19 08:29:16,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:29:16,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 161 [2022-11-19 08:29:16,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:29:16,240 INFO L225 Difference]: With dead ends: 2728 [2022-11-19 08:29:16,240 INFO L226 Difference]: Without dead ends: 1422 [2022-11-19 08:29:16,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 473 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 08:29:16,247 INFO L413 NwaCegarLoop]: 1878 mSDtfsCounter, 259 mSDsluCounter, 1632 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 3510 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:29:16,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 3510 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 08:29:16,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1422 states. [2022-11-19 08:29:16,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1422 to 1413. [2022-11-19 08:29:16,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1413 states, 1056 states have (on average 1.3882575757575757) internal successors, (1466), 1068 states have internal predecessors, (1466), 265 states have call successors, (265), 91 states have call predecessors, (265), 91 states have return successors, (270), 260 states have call predecessors, (270), 264 states have call successors, (270) [2022-11-19 08:29:16,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1413 states to 1413 states and 2001 transitions. [2022-11-19 08:29:16,321 INFO L78 Accepts]: Start accepts. Automaton has 1413 states and 2001 transitions. Word has length 161 [2022-11-19 08:29:16,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:29:16,322 INFO L495 AbstractCegarLoop]: Abstraction has 1413 states and 2001 transitions. [2022-11-19 08:29:16,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-19 08:29:16,323 INFO L276 IsEmpty]: Start isEmpty. Operand 1413 states and 2001 transitions. [2022-11-19 08:29:16,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-11-19 08:29:16,330 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:29:16,331 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:29:16,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-19 08:29:16,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2022-11-19 08:29:16,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 08:29:16,755 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:29:16,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:29:16,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1583759831, now seen corresponding path program 1 times [2022-11-19 08:29:16,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:29:16,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [876903401] [2022-11-19 08:29:16,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:29:16,757 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 08:29:16,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:29:16,759 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 08:29:16,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-19 08:29:18,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:29:18,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 1632 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 08:29:18,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:29:18,371 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-19 08:29:18,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:29:18,670 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-19 08:29:18,671 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:29:18,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [876903401] [2022-11-19 08:29:18,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [876903401] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:29:18,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [739921732] [2022-11-19 08:29:18,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:29:18,671 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 08:29:18,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 08:29:18,675 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 08:29:18,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2022-11-19 08:29:19,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:29:19,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 1632 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 08:29:19,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:29:20,046 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-19 08:29:20,046 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:29:20,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [739921732] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:29:20,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 08:29:20,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2022-11-19 08:29:20,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313903839] [2022-11-19 08:29:20,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:29:20,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:29:20,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:29:20,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:29:20,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-19 08:29:20,049 INFO L87 Difference]: Start difference. First operand 1413 states and 2001 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-19 08:29:20,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:29:20,366 INFO L93 Difference]: Finished difference Result 3012 states and 4257 transitions. [2022-11-19 08:29:20,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:29:20,366 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 175 [2022-11-19 08:29:20,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:29:20,382 INFO L225 Difference]: With dead ends: 3012 [2022-11-19 08:29:20,383 INFO L226 Difference]: Without dead ends: 1624 [2022-11-19 08:29:20,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 515 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-19 08:29:20,393 INFO L413 NwaCegarLoop]: 2107 mSDtfsCounter, 333 mSDsluCounter, 3869 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 5976 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:29:20,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 5976 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 08:29:20,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1624 states. [2022-11-19 08:29:20,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1624 to 1415. [2022-11-19 08:29:20,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1415 states, 1058 states have (on average 1.387523629489603) internal successors, (1468), 1070 states have internal predecessors, (1468), 265 states have call successors, (265), 91 states have call predecessors, (265), 91 states have return successors, (270), 260 states have call predecessors, (270), 264 states have call successors, (270) [2022-11-19 08:29:20,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1415 states to 1415 states and 2003 transitions. [2022-11-19 08:29:20,470 INFO L78 Accepts]: Start accepts. Automaton has 1415 states and 2003 transitions. Word has length 175 [2022-11-19 08:29:20,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:29:20,471 INFO L495 AbstractCegarLoop]: Abstraction has 1415 states and 2003 transitions. [2022-11-19 08:29:20,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-19 08:29:20,471 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states and 2003 transitions. [2022-11-19 08:29:20,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-11-19 08:29:20,478 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:29:20,479 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:29:20,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2022-11-19 08:29:20,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-19 08:29:20,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 08:29:20,890 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:29:20,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:29:20,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1280937051, now seen corresponding path program 1 times [2022-11-19 08:29:20,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:29:20,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1736155189] [2022-11-19 08:29:20,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:29:20,893 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 08:29:20,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:29:20,895 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 08:29:20,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-19 08:29:22,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:29:22,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 1653 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 08:29:22,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:29:22,419 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-19 08:29:22,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:29:22,695 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-19 08:29:22,695 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:29:22,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1736155189] [2022-11-19 08:29:22,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1736155189] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:29:22,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2037957635] [2022-11-19 08:29:22,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:29:22,696 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 08:29:22,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 08:29:22,700 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 08:29:22,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2022-11-19 08:29:23,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:29:23,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 1653 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 08:29:23,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:29:24,080 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-19 08:29:24,080 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:29:24,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2037957635] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:29:24,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 08:29:24,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2022-11-19 08:29:24,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420072597] [2022-11-19 08:29:24,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:29:24,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:29:24,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:29:24,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:29:24,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-19 08:29:24,083 INFO L87 Difference]: Start difference. First operand 1415 states and 2003 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-19 08:29:24,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:29:24,448 INFO L93 Difference]: Finished difference Result 3017 states and 4262 transitions. [2022-11-19 08:29:24,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:29:24,449 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 186 [2022-11-19 08:29:24,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:29:24,459 INFO L225 Difference]: With dead ends: 3017 [2022-11-19 08:29:24,459 INFO L226 Difference]: Without dead ends: 1627 [2022-11-19 08:29:24,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 557 GetRequests, 548 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-19 08:29:24,466 INFO L413 NwaCegarLoop]: 2110 mSDtfsCounter, 333 mSDsluCounter, 3869 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 5979 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:29:24,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 5979 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 08:29:24,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1627 states. [2022-11-19 08:29:24,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1627 to 1415. [2022-11-19 08:29:24,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1415 states, 1058 states have (on average 1.387523629489603) internal successors, (1468), 1070 states have internal predecessors, (1468), 265 states have call successors, (265), 91 states have call predecessors, (265), 91 states have return successors, (270), 260 states have call predecessors, (270), 264 states have call successors, (270) [2022-11-19 08:29:24,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1415 states to 1415 states and 2003 transitions. [2022-11-19 08:29:24,546 INFO L78 Accepts]: Start accepts. Automaton has 1415 states and 2003 transitions. Word has length 186 [2022-11-19 08:29:24,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:29:24,548 INFO L495 AbstractCegarLoop]: Abstraction has 1415 states and 2003 transitions. [2022-11-19 08:29:24,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-19 08:29:24,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states and 2003 transitions. [2022-11-19 08:29:24,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-11-19 08:29:24,557 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:29:24,558 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:29:24,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-19 08:29:24,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2022-11-19 08:29:24,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 08:29:24,975 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:29:24,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:29:24,975 INFO L85 PathProgramCache]: Analyzing trace with hash 145349001, now seen corresponding path program 1 times [2022-11-19 08:29:24,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:29:24,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [16606793] [2022-11-19 08:29:24,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:29:24,977 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 08:29:24,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:29:24,979 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 08:29:25,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef26ab62-a34d-4fd8-80e6-aefcad8bfcf6/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process