./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 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb5c0ea8-ae5f-4e9d-b486-74cda6952c5f/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb5c0ea8-ae5f-4e9d-b486-74cda6952c5f/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb5c0ea8-ae5f-4e9d-b486-74cda6952c5f/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb5c0ea8-ae5f-4e9d-b486-74cda6952c5f/bin/utaipan-7li7fVZpFI/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_eb5c0ea8-ae5f-4e9d-b486-74cda6952c5f/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb5c0ea8-ae5f-4e9d-b486-74cda6952c5f/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 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-5e519f3 [2022-11-03 02:53:04,798 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:53:04,800 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:53:04,827 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:53:04,827 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:53:04,829 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:53:04,830 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:53:04,832 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:53:04,834 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:53:04,835 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:53:04,836 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:53:04,837 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:53:04,837 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:53:04,839 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:53:04,840 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:53:04,841 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:53:04,842 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:53:04,843 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:53:04,845 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:53:04,847 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:53:04,849 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:53:04,850 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:53:04,851 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:53:04,852 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:53:04,856 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:53:04,857 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:53:04,863 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:53:04,864 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:53:04,864 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:53:04,866 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:53:04,866 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:53:04,867 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:53:04,868 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:53:04,869 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:53:04,870 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:53:04,870 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:53:04,871 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:53:04,871 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:53:04,871 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:53:04,872 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:53:04,873 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:53:04,874 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb5c0ea8-ae5f-4e9d-b486-74cda6952c5f/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:53:04,897 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:53:04,897 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:53:04,898 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:53:04,898 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:53:04,898 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:53:04,899 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:53:04,899 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:53:04,899 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:53:04,899 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:53:04,900 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:53:04,900 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:53:04,900 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:53:04,900 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:53:04,900 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:53:04,901 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:53:04,901 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:53:04,901 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:53:04,901 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:53:04,902 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:53:04,902 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:53:04,903 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:53:04,903 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:53:04,903 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:53:04,903 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:53:04,903 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:53:04,904 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:53:04,904 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:53:04,904 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:53:04,904 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:53:04,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:53:04,905 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:53:04,913 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:53:04,913 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:53:04,913 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:53:04,914 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:53:04,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:53:04,914 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:53:04,914 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:53:04,915 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_eb5c0ea8-ae5f-4e9d-b486-74cda6952c5f/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb5c0ea8-ae5f-4e9d-b486-74cda6952c5f/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 045b49e5089f039c3b28eef4cf3a9c907cbda8f22472af0061e42bad883dd2f9 [2022-11-03 02:53:05,176 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:53:05,204 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:53:05,207 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:53:05,208 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:53:05,211 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:53:05,212 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb5c0ea8-ae5f-4e9d-b486-74cda6952c5f/bin/utaipan-7li7fVZpFI/../../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 [2022-11-03 02:53:05,300 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb5c0ea8-ae5f-4e9d-b486-74cda6952c5f/bin/utaipan-7li7fVZpFI/data/d78dbc775/a19219dedbc1438e8ee9e8db0be3621b/FLAG3b6a7106c [2022-11-03 02:53:06,116 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:53:06,117 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb5c0ea8-ae5f-4e9d-b486-74cda6952c5f/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 [2022-11-03 02:53:06,171 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb5c0ea8-ae5f-4e9d-b486-74cda6952c5f/bin/utaipan-7li7fVZpFI/data/d78dbc775/a19219dedbc1438e8ee9e8db0be3621b/FLAG3b6a7106c [2022-11-03 02:53:06,627 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb5c0ea8-ae5f-4e9d-b486-74cda6952c5f/bin/utaipan-7li7fVZpFI/data/d78dbc775/a19219dedbc1438e8ee9e8db0be3621b [2022-11-03 02:53:06,630 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:53:06,632 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:53:06,633 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:53:06,634 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:53:06,638 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:53:06,639 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:53:06" (1/1) ... [2022-11-03 02:53:06,641 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@414836a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:53:06, skipping insertion in model container [2022-11-03 02:53:06,641 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:53:06" (1/1) ... [2022-11-03 02:53:06,650 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:53:06,764 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:53:07,348 WARN L1244 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3528] [2022-11-03 02:53:07,349 WARN L1244 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3529-3530] [2022-11-03 02:53:07,621 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb5c0ea8-ae5f-4e9d-b486-74cda6952c5f/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] [2022-11-03 02:53:08,507 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:53:08,530 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:53:08,654 WARN L1244 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3528] [2022-11-03 02:53:08,655 WARN L1244 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3529-3530] [2022-11-03 02:53:08,676 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb5c0ea8-ae5f-4e9d-b486-74cda6952c5f/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] [2022-11-03 02:53:08,981 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:53:09,056 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:53:09,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:53:09 WrapperNode [2022-11-03 02:53:09,057 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:53:09,058 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:53:09,058 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:53:09,058 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:53:09,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:53:09" (1/1) ... [2022-11-03 02:53:09,166 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:53:09" (1/1) ... [2022-11-03 02:53:09,374 INFO L138 Inliner]: procedures = 189, calls = 1686, calls flagged for inlining = 77, calls inlined = 68, statements flattened = 4486 [2022-11-03 02:53:09,375 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:53:09,376 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:53:09,377 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:53:09,377 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:53:09,392 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:53:09" (1/1) ... [2022-11-03 02:53:09,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:53:09" (1/1) ... [2022-11-03 02:53:09,447 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:53:09" (1/1) ... [2022-11-03 02:53:09,448 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:53:09" (1/1) ... [2022-11-03 02:53:09,594 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:53:09" (1/1) ... [2022-11-03 02:53:09,626 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:53:09" (1/1) ... [2022-11-03 02:53:09,728 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:53:09" (1/1) ... [2022-11-03 02:53:09,750 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:53:09" (1/1) ... [2022-11-03 02:53:09,820 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:53:09,822 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:53:09,822 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:53:09,822 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:53:09,823 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:53:09" (1/1) ... [2022-11-03 02:53:09,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:53:09,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb5c0ea8-ae5f-4e9d-b486-74cda6952c5f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:53:09,862 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb5c0ea8-ae5f-4e9d-b486-74cda6952c5f/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:53:09,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb5c0ea8-ae5f-4e9d-b486-74cda6952c5f/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:53:09,912 INFO L130 BoogieDeclarations]: Found specification of procedure sg_page [2022-11-03 02:53:09,912 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_page [2022-11-03 02:53:09,912 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-03 02:53:09,913 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-03 02:53:09,913 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-11-03 02:53:09,913 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-11-03 02:53:09,913 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-11-03 02:53:09,913 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-11-03 02:53:09,913 INFO L130 BoogieDeclarations]: Found specification of procedure free_sglist [2022-11-03 02:53:09,914 INFO L138 BoogieDeclarations]: Found implementation of procedure free_sglist [2022-11-03 02:53:09,914 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc_array [2022-11-03 02:53:09,914 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc_array [2022-11-03 02:53:09,914 INFO L130 BoogieDeclarations]: Found specification of procedure test_iso_queue [2022-11-03 02:53:09,914 INFO L138 BoogieDeclarations]: Found implementation of procedure test_iso_queue [2022-11-03 02:53:09,914 INFO L130 BoogieDeclarations]: Found specification of procedure simple_check_buf [2022-11-03 02:53:09,915 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_check_buf [2022-11-03 02:53:09,915 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 02:53:09,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 02:53:09,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:53:09,915 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2022-11-03 02:53:09,915 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2022-11-03 02:53:09,916 INFO L130 BoogieDeclarations]: Found specification of procedure perform_sglist [2022-11-03 02:53:09,916 INFO L138 BoogieDeclarations]: Found implementation of procedure perform_sglist [2022-11-03 02:53:09,916 INFO L130 BoogieDeclarations]: Found specification of procedure test_unaligned_bulk [2022-11-03 02:53:09,916 INFO L138 BoogieDeclarations]: Found implementation of procedure test_unaligned_bulk [2022-11-03 02:53:09,916 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-03 02:53:09,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-03 02:53:09,916 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_sglist [2022-11-03 02:53:09,917 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_sglist [2022-11-03 02:53:09,917 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-03 02:53:09,917 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-03 02:53:09,917 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:53:09,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:53:09,917 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2022-11-03 02:53:09,918 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2022-11-03 02:53:09,918 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-03 02:53:09,918 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-03 02:53:09,918 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-03 02:53:09,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-03 02:53:09,918 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 02:53:09,919 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 02:53:09,919 INFO L130 BoogieDeclarations]: Found specification of procedure set_altsetting [2022-11-03 02:53:09,919 INFO L138 BoogieDeclarations]: Found implementation of procedure set_altsetting [2022-11-03 02:53:09,919 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2022-11-03 02:53:09,919 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2022-11-03 02:53:09,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:53:09,919 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 02:53:09,920 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 02:53:09,920 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2022-11-03 02:53:09,920 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2022-11-03 02:53:09,920 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 02:53:09,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 02:53:09,920 INFO L130 BoogieDeclarations]: Found specification of procedure verify_not_halted [2022-11-03 02:53:09,920 INFO L138 BoogieDeclarations]: Found implementation of procedure verify_not_halted [2022-11-03 02:53:09,920 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2022-11-03 02:53:09,921 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2022-11-03 02:53:09,921 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-11-03 02:53:09,921 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-11-03 02:53:09,921 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:53:09,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:53:09,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 02:53:09,922 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 02:53:09,922 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2022-11-03 02:53:09,922 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2022-11-03 02:53:09,922 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 02:53:09,922 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 02:53:09,922 INFO L130 BoogieDeclarations]: Found specification of procedure test_halt [2022-11-03 02:53:09,923 INFO L138 BoogieDeclarations]: Found implementation of procedure test_halt [2022-11-03 02:53:09,923 INFO L130 BoogieDeclarations]: Found specification of procedure usbtest_alloc_urb [2022-11-03 02:53:09,923 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtest_alloc_urb [2022-11-03 02:53:09,923 INFO L130 BoogieDeclarations]: Found specification of procedure unlink1 [2022-11-03 02:53:09,923 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink1 [2022-11-03 02:53:09,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:53:09,923 INFO L130 BoogieDeclarations]: Found specification of procedure ctrl_out [2022-11-03 02:53:09,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ctrl_out [2022-11-03 02:53:09,924 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 02:53:09,924 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 02:53:09,924 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2022-11-03 02:53:09,924 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2022-11-03 02:53:09,924 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_status [2022-11-03 02:53:09,924 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_status [2022-11-03 02:53:09,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:53:09,925 INFO L130 BoogieDeclarations]: Found specification of procedure is_good_config [2022-11-03 02:53:09,925 INFO L138 BoogieDeclarations]: Found implementation of procedure is_good_config [2022-11-03 02:53:09,925 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2022-11-03 02:53:09,925 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2022-11-03 02:53:09,925 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion [2022-11-03 02:53:09,925 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion [2022-11-03 02:53:09,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:53:09,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:53:09,926 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unlink_urb [2022-11-03 02:53:09,926 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unlink_urb [2022-11-03 02:53:09,926 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-11-03 02:53:09,926 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-11-03 02:53:09,926 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2022-11-03 02:53:09,926 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2022-11-03 02:53:09,926 INFO L130 BoogieDeclarations]: Found specification of procedure testdev_to_usbdev [2022-11-03 02:53:09,927 INFO L138 BoogieDeclarations]: Found implementation of procedure testdev_to_usbdev [2022-11-03 02:53:09,927 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2022-11-03 02:53:09,927 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2022-11-03 02:53:09,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:53:09,927 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_simple [2022-11-03 02:53:09,927 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_simple [2022-11-03 02:53:09,928 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2022-11-03 02:53:09,928 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2022-11-03 02:53:09,928 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2022-11-03 02:53:09,928 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2022-11-03 02:53:09,928 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-11-03 02:53:09,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-11-03 02:53:09,928 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-11-03 02:53:09,928 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-11-03 02:53:09,929 INFO L130 BoogieDeclarations]: Found specification of procedure simple_io [2022-11-03 02:53:09,929 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_io [2022-11-03 02:53:09,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:53:09,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:53:09,929 INFO L130 BoogieDeclarations]: Found specification of procedure simple_alloc_urb [2022-11-03 02:53:09,929 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_alloc_urb [2022-11-03 02:53:09,929 INFO L130 BoogieDeclarations]: Found specification of procedure simple_free_urb [2022-11-03 02:53:09,929 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_free_urb [2022-11-03 02:53:09,930 INFO L130 BoogieDeclarations]: Found specification of procedure simple_fill_buf [2022-11-03 02:53:09,930 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_fill_buf [2022-11-03 02:53:09,930 INFO L130 BoogieDeclarations]: Found specification of procedure do_gettimeofday [2022-11-03 02:53:09,930 INFO L138 BoogieDeclarations]: Found implementation of procedure do_gettimeofday [2022-11-03 02:53:09,930 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-03 02:53:09,930 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-03 02:53:09,930 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-03 02:53:09,930 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-03 02:53:09,931 INFO L130 BoogieDeclarations]: Found specification of procedure usbtest_ioctl [2022-11-03 02:53:09,931 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtest_ioctl [2022-11-03 02:53:09,931 INFO L130 BoogieDeclarations]: Found specification of procedure buffer_offset [2022-11-03 02:53:09,931 INFO L138 BoogieDeclarations]: Found implementation of procedure buffer_offset [2022-11-03 02:53:09,931 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-11-03 02:53:09,931 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-11-03 02:53:09,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:53:09,932 INFO L130 BoogieDeclarations]: Found specification of procedure usb_clear_halt [2022-11-03 02:53:09,932 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_clear_halt [2022-11-03 02:53:09,932 INFO L130 BoogieDeclarations]: Found specification of procedure usbtest_disconnect [2022-11-03 02:53:09,932 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtest_disconnect [2022-11-03 02:53:09,932 INFO L130 BoogieDeclarations]: Found specification of procedure check_guard_bytes [2022-11-03 02:53:09,932 INFO L138 BoogieDeclarations]: Found implementation of procedure check_guard_bytes [2022-11-03 02:53:09,932 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-11-03 02:53:09,932 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-11-03 02:53:09,933 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-11-03 02:53:09,933 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-11-03 02:53:09,933 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-03 02:53:09,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-03 02:53:09,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:53:09,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:53:09,933 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_descriptor [2022-11-03 02:53:09,934 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_descriptor [2022-11-03 02:53:10,779 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:53:10,787 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:53:11,534 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 02:53:14,970 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:53:16,339 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:53:16,340 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 02:53:16,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:53:16 BoogieIcfgContainer [2022-11-03 02:53:16,347 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:53:16,352 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:53:16,352 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:53:16,357 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:53:16,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:53:06" (1/3) ... [2022-11-03 02:53:16,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c2c010b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:53:16, skipping insertion in model container [2022-11-03 02:53:16,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:53:09" (2/3) ... [2022-11-03 02:53:16,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c2c010b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:53:16, skipping insertion in model container [2022-11-03 02:53:16,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:53:16" (3/3) ... [2022-11-03 02:53:16,361 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 [2022-11-03 02:53:16,387 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:53:16,387 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:53:16,505 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:53:16,513 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;@31c84971, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:53:16,514 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:53:16,522 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) [2022-11-03 02:53:16,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-03 02:53:16,534 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:53:16,534 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] [2022-11-03 02:53:16,535 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:53:16,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:53:16,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1991651387, now seen corresponding path program 1 times [2022-11-03 02:53:16,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:53:16,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579777143] [2022-11-03 02:53:16,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:53:16,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:53:16,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:53:17,222 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 02:53:17,222 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:53:17,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579777143] [2022-11-03 02:53:17,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579777143] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:53:17,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:53:17,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:53:17,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257129190] [2022-11-03 02:53:17,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:53:17,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:53:17,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:53:17,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:53:17,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:53:17,289 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) [2022-11-03 02:53:18,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:53:18,452 INFO L93 Difference]: Finished difference Result 2037 states and 3055 transitions. [2022-11-03 02:53:18,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:53:18,455 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 [2022-11-03 02:53:18,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:53:18,477 INFO L225 Difference]: With dead ends: 2037 [2022-11-03 02:53:18,477 INFO L226 Difference]: Without dead ends: 1022 [2022-11-03 02:53:18,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:53:18,497 INFO L413 NwaCegarLoop]: 1278 mSDtfsCounter, 48 mSDsluCounter, 1444 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 2531 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:53:18,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 2531 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-03 02:53:18,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1022 states. [2022-11-03 02:53:18,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1022 to 1020. [2022-11-03 02:53:18,614 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) [2022-11-03 02:53:18,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1020 states to 1020 states and 1489 transitions. [2022-11-03 02:53:18,630 INFO L78 Accepts]: Start accepts. Automaton has 1020 states and 1489 transitions. Word has length 35 [2022-11-03 02:53:18,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:53:18,631 INFO L495 AbstractCegarLoop]: Abstraction has 1020 states and 1489 transitions. [2022-11-03 02:53:18,631 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) [2022-11-03 02:53:18,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1020 states and 1489 transitions. [2022-11-03 02:53:18,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-03 02:53:18,636 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:53:18,636 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] [2022-11-03 02:53:18,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:53:18,637 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:53:18,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:53:18,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1780382269, now seen corresponding path program 1 times [2022-11-03 02:53:18,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:53:18,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445865669] [2022-11-03 02:53:18,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:53:18,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:53:18,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:53:19,029 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 02:53:19,029 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:53:19,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445865669] [2022-11-03 02:53:19,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445865669] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:53:19,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:53:19,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:53:19,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366610757] [2022-11-03 02:53:19,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:53:19,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:53:19,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:53:19,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:53:19,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:53:19,036 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) [2022-11-03 02:53:19,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:53:19,849 INFO L93 Difference]: Finished difference Result 1048 states and 1515 transitions. [2022-11-03 02:53:19,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:53:19,856 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 [2022-11-03 02:53:19,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:53:19,864 INFO L225 Difference]: With dead ends: 1048 [2022-11-03 02:53:19,865 INFO L226 Difference]: Without dead ends: 1045 [2022-11-03 02:53:19,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:53:19,867 INFO L413 NwaCegarLoop]: 1261 mSDtfsCounter, 1383 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1383 SdHoareTripleChecker+Valid, 1311 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:53:19,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1383 Valid, 1311 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 02:53:19,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2022-11-03 02:53:19,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 1045. [2022-11-03 02:53:19,955 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) [2022-11-03 02:53:19,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 1512 transitions. [2022-11-03 02:53:19,965 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 1512 transitions. Word has length 51 [2022-11-03 02:53:19,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:53:19,966 INFO L495 AbstractCegarLoop]: Abstraction has 1045 states and 1512 transitions. [2022-11-03 02:53:19,966 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) [2022-11-03 02:53:19,966 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 1512 transitions. [2022-11-03 02:53:19,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-03 02:53:19,989 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:53:19,990 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] [2022-11-03 02:53:19,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:53:19,990 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:53:20,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:53:20,002 INFO L85 PathProgramCache]: Analyzing trace with hash -452247318, now seen corresponding path program 1 times [2022-11-03 02:53:20,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:53:20,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48109294] [2022-11-03 02:53:20,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:53:20,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:53:20,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:53:20,241 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:53:20,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48109294] [2022-11-03 02:53:20,242 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-03 02:53:20,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613085302] [2022-11-03 02:53:20,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:53:20,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:53:20,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb5c0ea8-ae5f-4e9d-b486-74cda6952c5f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:53:20,247 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb5c0ea8-ae5f-4e9d-b486-74cda6952c5f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:53:20,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb5c0ea8-ae5f-4e9d-b486-74cda6952c5f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:53:21,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:53:21,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 2394 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:53:21,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:53:21,457 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 02:53:21,457 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:53:21,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613085302] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:53:21,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:53:21,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:53:21,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880052010] [2022-11-03 02:53:21,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:53:21,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:53:21,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:53:21,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:53:21,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:53:21,461 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) [2022-11-03 02:53:24,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:53:26,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:53:27,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:53:27,040 INFO L93 Difference]: Finished difference Result 2144 states and 3089 transitions. [2022-11-03 02:53:27,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:53:27,045 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 [2022-11-03 02:53:27,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:53:27,062 INFO L225 Difference]: With dead ends: 2144 [2022-11-03 02:53:27,063 INFO L226 Difference]: Without dead ends: 1117 [2022-11-03 02:53:27,070 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 [2022-11-03 02:53:27,072 INFO L413 NwaCegarLoop]: 1266 mSDtfsCounter, 205 mSDsluCounter, 1289 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 12 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 2382 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:53:27,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 2382 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 397 Invalid, 2 Unknown, 0 Unchecked, 5.4s Time] [2022-11-03 02:53:27,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1117 states. [2022-11-03 02:53:27,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1117 to 1111. [2022-11-03 02:53:27,146 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) [2022-11-03 02:53:27,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 1587 transitions. [2022-11-03 02:53:27,156 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 1587 transitions. Word has length 132 [2022-11-03 02:53:27,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:53:27,159 INFO L495 AbstractCegarLoop]: Abstraction has 1111 states and 1587 transitions. [2022-11-03 02:53:27,159 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) [2022-11-03 02:53:27,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 1587 transitions. [2022-11-03 02:53:27,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-03 02:53:27,173 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:53:27,173 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2022-11-03 02:53:27,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb5c0ea8-ae5f-4e9d-b486-74cda6952c5f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:53:27,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb5c0ea8-ae5f-4e9d-b486-74cda6952c5f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:53:27,389 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:53:27,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:53:27,390 INFO L85 PathProgramCache]: Analyzing trace with hash 710004589, now seen corresponding path program 1 times [2022-11-03 02:53:27,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:53:27,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769131551] [2022-11-03 02:53:27,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:53:27,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:53:27,543 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:53:27,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1388860738] [2022-11-03 02:53:27,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:53:27,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:53:27,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb5c0ea8-ae5f-4e9d-b486-74cda6952c5f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:53:27,548 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb5c0ea8-ae5f-4e9d-b486-74cda6952c5f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:53:27,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb5c0ea8-ae5f-4e9d-b486-74cda6952c5f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:53:28,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:53:28,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 2471 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 02:53:28,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:53:28,910 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:53:28,993 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-03 02:53:28,993 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:53:28,993 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:53:28,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769131551] [2022-11-03 02:53:28,994 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:53:28,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388860738] [2022-11-03 02:53:28,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388860738] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:53:28,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:53:28,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 02:53:28,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941514578] [2022-11-03 02:53:28,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:53:28,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:53:28,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:53:28,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:53:28,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:53:28,997 INFO L87 Difference]: Start difference. First operand 1111 states and 1587 transitions. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 4 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-03 02:53:32,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:53:35,727 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:53:37,892 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:53:40,009 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:53:42,308 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:53:43,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:53:43,621 INFO L93 Difference]: Finished difference Result 2285 states and 3288 transitions. [2022-11-03 02:53:43,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:53:43,622 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 4 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 147 [2022-11-03 02:53:43,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:53:43,631 INFO L225 Difference]: With dead ends: 2285 [2022-11-03 02:53:43,631 INFO L226 Difference]: Without dead ends: 1192 [2022-11-03 02:53:43,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:53:43,637 INFO L413 NwaCegarLoop]: 1280 mSDtfsCounter, 73 mSDsluCounter, 3937 mSDsCounter, 0 mSdLazyCounter, 875 mSolverCounterSat, 20 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 4804 SdHoareTripleChecker+Invalid, 1294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 875 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 394 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:53:43,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 4804 Invalid, 1294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 875 Invalid, 5 Unknown, 394 Unchecked, 14.4s Time] [2022-11-03 02:53:43,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2022-11-03 02:53:43,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 1130. [2022-11-03 02:53:43,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1130 states, 768 states have (on average 1.3984375) internal successors, (1074), 779 states have internal predecessors, (1074), 269 states have call successors, (269), 93 states have call predecessors, (269), 92 states have return successors, (268), 264 states have call predecessors, (268), 268 states have call successors, (268) [2022-11-03 02:53:43,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 1611 transitions. [2022-11-03 02:53:43,704 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 1611 transitions. Word has length 147 [2022-11-03 02:53:43,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:53:43,708 INFO L495 AbstractCegarLoop]: Abstraction has 1130 states and 1611 transitions. [2022-11-03 02:53:43,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 4 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-03 02:53:43,709 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 1611 transitions. [2022-11-03 02:53:43,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-03 02:53:43,715 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:53:43,716 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] [2022-11-03 02:53:43,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb5c0ea8-ae5f-4e9d-b486-74cda6952c5f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:53:43,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb5c0ea8-ae5f-4e9d-b486-74cda6952c5f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:53:43,941 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:53:43,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:53:43,942 INFO L85 PathProgramCache]: Analyzing trace with hash -690364152, now seen corresponding path program 1 times [2022-11-03 02:53:43,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:53:43,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486132795] [2022-11-03 02:53:43,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:53:43,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:53:44,064 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:53:44,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [520876447] [2022-11-03 02:53:44,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:53:44,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:53:44,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb5c0ea8-ae5f-4e9d-b486-74cda6952c5f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:53:44,068 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb5c0ea8-ae5f-4e9d-b486-74cda6952c5f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:53:44,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb5c0ea8-ae5f-4e9d-b486-74cda6952c5f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 02:53:45,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:53:45,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 2480 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 02:53:45,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:53:45,234 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:53:45,234 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:53:45,234 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:53:45,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486132795] [2022-11-03 02:53:45,235 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:53:45,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520876447] [2022-11-03 02:53:45,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520876447] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:53:45,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:53:45,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:53:45,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2858291] [2022-11-03 02:53:45,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:53:45,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:53:45,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:53:45,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:53:45,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:53:45,241 INFO L87 Difference]: Start difference. First operand 1130 states and 1611 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) [2022-11-03 02:53:47,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:53:47,268 INFO L93 Difference]: Finished difference Result 2312 states and 3308 transitions. [2022-11-03 02:53:47,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:53:47,270 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 [2022-11-03 02:53:47,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:53:47,281 INFO L225 Difference]: With dead ends: 2312 [2022-11-03 02:53:47,281 INFO L226 Difference]: Without dead ends: 1200 [2022-11-03 02:53:47,289 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 [2022-11-03 02:53:47,291 INFO L413 NwaCegarLoop]: 1329 mSDtfsCounter, 225 mSDsluCounter, 1444 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 2570 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:53:47,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 2570 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-03 02:53:47,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1200 states. [2022-11-03 02:53:47,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1200 to 1131. [2022-11-03 02:53:47,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1131 states, 769 states have (on average 1.3953185955786735) internal successors, (1073), 780 states have internal predecessors, (1073), 269 states have call successors, (269), 93 states have call predecessors, (269), 92 states have return successors, (268), 264 states have call predecessors, (268), 268 states have call successors, (268) [2022-11-03 02:53:47,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 1610 transitions. [2022-11-03 02:53:47,397 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 1610 transitions. Word has length 144 [2022-11-03 02:53:47,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:53:47,398 INFO L495 AbstractCegarLoop]: Abstraction has 1131 states and 1610 transitions. [2022-11-03 02:53:47,398 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) [2022-11-03 02:53:47,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 1610 transitions. [2022-11-03 02:53:47,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 02:53:47,407 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:53:47,408 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] [2022-11-03 02:53:47,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb5c0ea8-ae5f-4e9d-b486-74cda6952c5f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:53:47,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb5c0ea8-ae5f-4e9d-b486-74cda6952c5f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:53:47,621 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:53:47,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:53:47,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1414347090, now seen corresponding path program 1 times [2022-11-03 02:53:47,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:53:47,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587476] [2022-11-03 02:53:47,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:53:47,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:53:47,760 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:53:47,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [609215793] [2022-11-03 02:53:47,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:53:47,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:53:47,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb5c0ea8-ae5f-4e9d-b486-74cda6952c5f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:53:47,762 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb5c0ea8-ae5f-4e9d-b486-74cda6952c5f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:53:47,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb5c0ea8-ae5f-4e9d-b486-74cda6952c5f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 02:53:48,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:53:48,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 2513 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 02:53:48,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:53:49,028 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:53:49,029 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:53:49,029 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:53:49,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587476] [2022-11-03 02:53:49,030 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:53:49,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609215793] [2022-11-03 02:53:49,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609215793] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:53:49,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:53:49,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:53:49,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682541542] [2022-11-03 02:53:49,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:53:49,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:53:49,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:53:49,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:53:49,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:53:49,034 INFO L87 Difference]: Start difference. First operand 1131 states and 1610 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) [2022-11-03 02:53:50,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:53:50,807 INFO L93 Difference]: Finished difference Result 2314 states and 3304 transitions. [2022-11-03 02:53:50,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:53:50,809 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 [2022-11-03 02:53:50,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:53:50,820 INFO L225 Difference]: With dead ends: 2314 [2022-11-03 02:53:50,820 INFO L226 Difference]: Without dead ends: 1201 [2022-11-03 02:53:50,828 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 [2022-11-03 02:53:50,829 INFO L413 NwaCegarLoop]: 1319 mSDtfsCounter, 215 mSDsluCounter, 1444 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 2560 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:53:50,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 2560 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-03 02:53:50,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1201 states. [2022-11-03 02:53:50,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1201 to 1131. [2022-11-03 02:53:50,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1131 states, 769 states have (on average 1.3953185955786735) internal successors, (1073), 780 states have internal predecessors, (1073), 269 states have call successors, (269), 93 states have call predecessors, (269), 92 states have return successors, (268), 264 states have call predecessors, (268), 268 states have call successors, (268) [2022-11-03 02:53:50,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 1610 transitions. [2022-11-03 02:53:50,916 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 1610 transitions. Word has length 154 [2022-11-03 02:53:50,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:53:50,919 INFO L495 AbstractCegarLoop]: Abstraction has 1131 states and 1610 transitions. [2022-11-03 02:53:50,919 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) [2022-11-03 02:53:50,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 1610 transitions. [2022-11-03 02:53:50,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-11-03 02:53:50,927 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:53:50,928 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] [2022-11-03 02:53:50,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb5c0ea8-ae5f-4e9d-b486-74cda6952c5f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 02:53:51,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb5c0ea8-ae5f-4e9d-b486-74cda6952c5f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-03 02:53:51,149 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:53:51,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:53:51,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1495822007, now seen corresponding path program 1 times [2022-11-03 02:53:51,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:53:51,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894734667] [2022-11-03 02:53:51,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:53:51,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:53:51,292 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:53:51,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2021546770] [2022-11-03 02:53:51,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:53:51,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:53:51,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb5c0ea8-ae5f-4e9d-b486-74cda6952c5f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:53:51,297 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb5c0ea8-ae5f-4e9d-b486-74cda6952c5f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:53:51,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb5c0ea8-ae5f-4e9d-b486-74cda6952c5f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 02:53:52,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:53:52,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 2751 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:53:52,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:53:52,669 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-03 02:53:52,670 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:53:52,670 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:53:52,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894734667] [2022-11-03 02:53:52,670 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:53:52,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021546770] [2022-11-03 02:53:52,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021546770] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:53:52,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:53:52,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:53:52,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745451209] [2022-11-03 02:53:52,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:53:52,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:53:52,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:53:52,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:53:52,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:53:52,675 INFO L87 Difference]: Start difference. First operand 1131 states and 1610 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) [2022-11-03 02:53:54,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:53:54,771 INFO L93 Difference]: Finished difference Result 2382 states and 3408 transitions. [2022-11-03 02:53:54,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:53:54,773 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 [2022-11-03 02:53:54,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:53:54,784 INFO L225 Difference]: With dead ends: 2382 [2022-11-03 02:53:54,784 INFO L226 Difference]: Without dead ends: 1269 [2022-11-03 02:53:54,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:53:54,795 INFO L413 NwaCegarLoop]: 1354 mSDtfsCounter, 322 mSDsluCounter, 1786 mSDsCounter, 0 mSdLazyCounter, 830 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 2870 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:53:54,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 2870 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 830 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-03 02:53:54,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2022-11-03 02:53:54,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1137. [2022-11-03 02:53:54,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1137 states, 773 states have (on average 1.3932729624838291) internal successors, (1077), 784 states have internal predecessors, (1077), 271 states have call successors, (271), 93 states have call predecessors, (271), 92 states have return successors, (270), 266 states have call predecessors, (270), 270 states have call successors, (270) [2022-11-03 02:53:54,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1137 states to 1137 states and 1618 transitions. [2022-11-03 02:53:54,866 INFO L78 Accepts]: Start accepts. Automaton has 1137 states and 1618 transitions. Word has length 189 [2022-11-03 02:53:54,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:53:54,867 INFO L495 AbstractCegarLoop]: Abstraction has 1137 states and 1618 transitions. [2022-11-03 02:53:54,868 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) [2022-11-03 02:53:54,868 INFO L276 IsEmpty]: Start isEmpty. Operand 1137 states and 1618 transitions. [2022-11-03 02:53:54,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-03 02:53:54,876 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:53:54,877 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] [2022-11-03 02:53:54,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb5c0ea8-ae5f-4e9d-b486-74cda6952c5f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 02:53:55,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb5c0ea8-ae5f-4e9d-b486-74cda6952c5f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-03 02:53:55,098 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:53:55,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:53:55,098 INFO L85 PathProgramCache]: Analyzing trace with hash -192413857, now seen corresponding path program 1 times [2022-11-03 02:53:55,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:53:55,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837537451] [2022-11-03 02:53:55,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:53:55,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:53:55,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:53:55,370 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:53:55,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837537451] [2022-11-03 02:53:55,385 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-03 02:53:55,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303618144] [2022-11-03 02:53:55,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:53:55,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:53:55,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb5c0ea8-ae5f-4e9d-b486-74cda6952c5f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:53:55,391 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb5c0ea8-ae5f-4e9d-b486-74cda6952c5f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:53:55,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb5c0ea8-ae5f-4e9d-b486-74cda6952c5f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 02:53:56,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:53:56,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 2783 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 02:53:56,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:53:56,606 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-03 02:53:56,606 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:53:56,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303618144] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:53:56,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:53:56,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:53:56,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539237383] [2022-11-03 02:53:56,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:53:56,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:53:56,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:53:56,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:53:56,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:53:56,609 INFO L87 Difference]: Start difference. First operand 1137 states and 1618 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-03 02:54:00,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:54:02,679 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:54:03,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:54:03,247 INFO L93 Difference]: Finished difference Result 3303 states and 4743 transitions. [2022-11-03 02:54:03,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:54:03,249 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 188 [2022-11-03 02:54:03,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:54:03,263 INFO L225 Difference]: With dead ends: 3303 [2022-11-03 02:54:03,263 INFO L226 Difference]: Without dead ends: 2184 [2022-11-03 02:54:03,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:54:03,270 INFO L413 NwaCegarLoop]: 1542 mSDtfsCounter, 1411 mSDsluCounter, 3205 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 27 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1419 SdHoareTripleChecker+Valid, 4347 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:54:03,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1419 Valid, 4347 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 673 Invalid, 2 Unknown, 0 Unchecked, 6.5s Time] [2022-11-03 02:54:03,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2184 states. [2022-11-03 02:54:03,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2184 to 2067. [2022-11-03 02:54:03,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2067 states, 1398 states have (on average 1.3969957081545064) internal successors, (1953), 1420 states have internal predecessors, (1953), 502 states have call successors, (502), 167 states have call predecessors, (502), 166 states have return successors, (505), 493 states have call predecessors, (505), 501 states have call successors, (505) [2022-11-03 02:54:03,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2067 states to 2067 states and 2960 transitions. [2022-11-03 02:54:03,392 INFO L78 Accepts]: Start accepts. Automaton has 2067 states and 2960 transitions. Word has length 188 [2022-11-03 02:54:03,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:54:03,393 INFO L495 AbstractCegarLoop]: Abstraction has 2067 states and 2960 transitions. [2022-11-03 02:54:03,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-03 02:54:03,393 INFO L276 IsEmpty]: Start isEmpty. Operand 2067 states and 2960 transitions. [2022-11-03 02:54:03,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-11-03 02:54:03,405 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:54:03,405 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] [2022-11-03 02:54:03,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb5c0ea8-ae5f-4e9d-b486-74cda6952c5f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-03 02:54:03,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb5c0ea8-ae5f-4e9d-b486-74cda6952c5f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:54:03,620 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:54:03,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:54:03,620 INFO L85 PathProgramCache]: Analyzing trace with hash 280923699, now seen corresponding path program 1 times [2022-11-03 02:54:03,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:54:03,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788508296] [2022-11-03 02:54:03,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:54:03,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:54:03,751 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:54:03,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2123142043] [2022-11-03 02:54:03,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:54:03,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:54:03,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb5c0ea8-ae5f-4e9d-b486-74cda6952c5f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:54:03,753 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb5c0ea8-ae5f-4e9d-b486-74cda6952c5f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:54:03,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb5c0ea8-ae5f-4e9d-b486-74cda6952c5f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-03 02:54:04,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:54:04,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 2784 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-03 02:54:04,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:54:05,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:54:05,732 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-11-03 02:54:06,063 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:54:06,126 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-03 02:54:06,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:54:06,657 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:54:06,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788508296] [2022-11-03 02:54:06,658 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:54:06,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123142043] [2022-11-03 02:54:06,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123142043] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:54:06,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [765369121] [2022-11-03 02:54:06,687 INFO L159 IcfgInterpreter]: Started Sifa with 154 locations of interest [2022-11-03 02:54:06,688 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:54:06,692 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:54:06,699 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:54:06,699 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:54:09,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:54:10,258 INFO L244 Elim1Store]: Index analysis took 597 ms [2022-11-03 02:54:45,545 WARN L234 SmtUtils]: Spent 35.21s on a formula simplification. DAG size of input: 1754 DAG size of output: 957 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-03 02:54:45,552 INFO L356 Elim1Store]: treesize reduction 2862, result has 33.3 percent of original size [2022-11-03 02:54:45,556 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:54:48,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:54:48,615 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:55:01,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:01,584 INFO L244 Elim1Store]: Index analysis took 443 ms [2022-11-03 02:55:01,670 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 259 select indices, 259 select index equivalence classes, 7373 disjoint index pairs (out of 33411 index pairs), introduced 259 new quantified variables, introduced 0 case distinctions, treesize of input 2174 treesize of output 800 [2022-11-03 02:55:02,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:02,579 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:55:03,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:03,245 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:55:13,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:13,757 INFO L244 Elim1Store]: Index analysis took 384 ms [2022-11-03 02:55:13,817 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 259 select indices, 259 select index equivalence classes, 7373 disjoint index pairs (out of 33411 index pairs), introduced 259 new quantified variables, introduced 0 case distinctions, treesize of input 2174 treesize of output 800 [2022-11-03 02:55:14,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:14,781 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:55:15,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:55:15,420 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:55:28,596 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_zalloc with input of size 2367 for LOIs [2022-11-03 02:55:59,497 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 831 for LOIs [2022-11-03 02:56:00,080 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:58:00,185 WARN L234 SmtUtils]: Spent 1.98m on a formula simplification. DAG size of input: 2244 DAG size of output: 1926 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:00:08,686 WARN L234 SmtUtils]: Spent 2.06m on a formula simplification. DAG size of input: 2367 DAG size of output: 2252 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:02:22,469 WARN L234 SmtUtils]: Spent 2.15m on a formula simplification. DAG size of input: 2375 DAG size of output: 2261 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:04:38,155 WARN L234 SmtUtils]: Spent 2.17m on a formula simplification. DAG size of input: 2381 DAG size of output: 2267 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:04:57,215 WARN L234 SmtUtils]: Spent 17.51s on a formula simplification. DAG size of input: 827 DAG size of output: 824 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:05:16,888 WARN L234 SmtUtils]: Spent 18.02s on a formula simplification. DAG size of input: 831 DAG size of output: 828 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:05:37,162 WARN L234 SmtUtils]: Spent 18.69s on a formula simplification. DAG size of input: 839 DAG size of output: 833 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:05:56,775 WARN L234 SmtUtils]: Spent 17.85s on a formula simplification. DAG size of input: 843 DAG size of output: 837 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:06:14,047 WARN L234 SmtUtils]: Spent 15.64s on a formula simplification. DAG size of input: 831 DAG size of output: 828 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:06:31,800 WARN L234 SmtUtils]: Spent 16.16s on a formula simplification. DAG size of input: 833 DAG size of output: 830 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:06:31,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [765369121] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:06:31,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:06:31,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [16] total 26 [2022-11-03 03:06:31,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124178562] [2022-11-03 03:06:31,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:06:31,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 03:06:31,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:06:31,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 03:06:31,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=887, Unknown=0, NotChecked=0, Total=992 [2022-11-03 03:06:31,839 INFO L87 Difference]: Start difference. First operand 2067 states and 2960 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)