./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 ae007674 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 045b49e5089f039c3b28eef4cf3a9c907cbda8f22472af0061e42bad883dd2f9 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 04:04:33,519 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 04:04:33,521 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 04:04:33,552 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 04:04:33,553 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 04:04:33,555 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 04:04:33,556 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 04:04:33,560 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 04:04:33,562 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 04:04:33,565 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 04:04:33,566 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 04:04:33,569 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 04:04:33,569 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 04:04:33,571 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 04:04:33,576 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 04:04:33,579 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 04:04:33,580 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 04:04:33,580 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 04:04:33,582 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 04:04:33,587 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 04:04:33,588 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 04:04:33,589 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 04:04:33,590 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 04:04:33,591 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 04:04:33,595 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 04:04:33,596 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 04:04:33,596 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 04:04:33,597 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 04:04:33,598 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 04:04:33,598 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 04:04:33,599 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 04:04:33,599 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 04:04:33,600 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 04:04:33,601 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 04:04:33,602 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 04:04:33,602 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 04:04:33,603 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 04:04:33,603 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 04:04:33,603 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 04:04:33,605 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 04:04:33,605 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 04:04:33,609 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 04:04:33,635 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 04:04:33,636 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 04:04:33,636 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 04:04:33,637 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 04:04:33,637 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 04:04:33,638 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 04:04:33,639 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 04:04:33,639 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 04:04:33,639 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 04:04:33,639 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 04:04:33,640 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 04:04:33,640 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 04:04:33,640 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 04:04:33,641 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 04:04:33,641 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 04:04:33,641 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 04:04:33,641 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 04:04:33,641 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 04:04:33,641 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 04:04:33,642 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 04:04:33,642 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 04:04:33,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 04:04:33,642 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 04:04:33,642 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 04:04:33,642 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 04:04:33,643 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 04:04:33,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 04:04:33,643 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 04:04:33,643 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 04:04:33,643 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 04:04:33,643 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 045b49e5089f039c3b28eef4cf3a9c907cbda8f22472af0061e42bad883dd2f9 [2021-12-28 04:04:33,898 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 04:04:33,937 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 04:04:33,940 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 04:04:33,941 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 04:04:33,941 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 04:04:33,942 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../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 [2021-12-28 04:04:34,027 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d6e1bb34/8a873e8fa8874817a3a14b43e89e7ef3/FLAGd2595ae34 [2021-12-28 04:04:34,601 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 04:04:34,602 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/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 [2021-12-28 04:04:34,631 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d6e1bb34/8a873e8fa8874817a3a14b43e89e7ef3/FLAGd2595ae34 [2021-12-28 04:04:34,834 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d6e1bb34/8a873e8fa8874817a3a14b43e89e7ef3 [2021-12-28 04:04:34,836 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 04:04:34,837 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 04:04:34,839 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 04:04:34,839 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 04:04:34,842 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 04:04:34,842 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 04:04:34" (1/1) ... [2021-12-28 04:04:34,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11718db0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:04:34, skipping insertion in model container [2021-12-28 04:04:34,843 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 04:04:34" (1/1) ... [2021-12-28 04:04:34,848 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 04:04:34,923 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 04:04:35,270 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3528] [2021-12-28 04:04:35,270 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3529-3530] [2021-12-28 04:04:35,406 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/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] [2021-12-28 04:04:35,867 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 04:04:35,897 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 04:04:35,964 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3528] [2021-12-28 04:04:35,965 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3529-3530] [2021-12-28 04:04:35,977 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/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] [2021-12-28 04:04:36,265 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 04:04:36,310 INFO L208 MainTranslator]: Completed translation [2021-12-28 04:04:36,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:04:36 WrapperNode [2021-12-28 04:04:36,311 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 04:04:36,312 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 04:04:36,312 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 04:04:36,312 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 04:04:36,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:04:36" (1/1) ... [2021-12-28 04:04:36,408 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:04:36" (1/1) ... [2021-12-28 04:04:36,563 INFO L137 Inliner]: procedures = 189, calls = 1686, calls flagged for inlining = 77, calls inlined = 68, statements flattened = 4486 [2021-12-28 04:04:36,563 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 04:04:36,564 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 04:04:36,564 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 04:04:36,564 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 04:04:36,578 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:04:36" (1/1) ... [2021-12-28 04:04:36,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:04:36" (1/1) ... [2021-12-28 04:04:36,608 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:04:36" (1/1) ... [2021-12-28 04:04:36,608 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:04:36" (1/1) ... [2021-12-28 04:04:36,743 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:04:36" (1/1) ... [2021-12-28 04:04:36,765 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:04:36" (1/1) ... [2021-12-28 04:04:36,778 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:04:36" (1/1) ... [2021-12-28 04:04:36,822 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 04:04:36,823 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 04:04:36,824 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 04:04:36,824 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 04:04:36,824 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:04:36" (1/1) ... [2021-12-28 04:04:36,851 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 04:04:36,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 04:04:36,890 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-28 04:04:36,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-28 04:04:36,914 INFO L130 BoogieDeclarations]: Found specification of procedure sg_page [2021-12-28 04:04:36,915 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_page [2021-12-28 04:04:36,915 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-28 04:04:36,915 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-28 04:04:36,915 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2021-12-28 04:04:36,915 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2021-12-28 04:04:36,915 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2021-12-28 04:04:36,915 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2021-12-28 04:04:36,915 INFO L130 BoogieDeclarations]: Found specification of procedure free_sglist [2021-12-28 04:04:36,916 INFO L138 BoogieDeclarations]: Found implementation of procedure free_sglist [2021-12-28 04:04:36,916 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc_array [2021-12-28 04:04:36,916 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc_array [2021-12-28 04:04:36,916 INFO L130 BoogieDeclarations]: Found specification of procedure test_iso_queue [2021-12-28 04:04:36,916 INFO L138 BoogieDeclarations]: Found implementation of procedure test_iso_queue [2021-12-28 04:04:36,916 INFO L130 BoogieDeclarations]: Found specification of procedure simple_check_buf [2021-12-28 04:04:36,916 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_check_buf [2021-12-28 04:04:36,916 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-28 04:04:36,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-28 04:04:36,917 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 04:04:36,917 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2021-12-28 04:04:36,917 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2021-12-28 04:04:36,917 INFO L130 BoogieDeclarations]: Found specification of procedure perform_sglist [2021-12-28 04:04:36,917 INFO L138 BoogieDeclarations]: Found implementation of procedure perform_sglist [2021-12-28 04:04:36,917 INFO L130 BoogieDeclarations]: Found specification of procedure test_unaligned_bulk [2021-12-28 04:04:36,917 INFO L138 BoogieDeclarations]: Found implementation of procedure test_unaligned_bulk [2021-12-28 04:04:36,917 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-12-28 04:04:36,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-12-28 04:04:36,918 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_sglist [2021-12-28 04:04:36,918 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_sglist [2021-12-28 04:04:36,918 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-28 04:04:36,918 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-28 04:04:36,918 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-28 04:04:36,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-28 04:04:36,918 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2021-12-28 04:04:36,918 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2021-12-28 04:04:36,918 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-12-28 04:04:36,919 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-12-28 04:04:36,919 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-12-28 04:04:36,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-12-28 04:04:36,919 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-28 04:04:36,919 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-28 04:04:36,919 INFO L130 BoogieDeclarations]: Found specification of procedure set_altsetting [2021-12-28 04:04:36,919 INFO L138 BoogieDeclarations]: Found implementation of procedure set_altsetting [2021-12-28 04:04:36,919 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2021-12-28 04:04:36,919 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2021-12-28 04:04:36,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 04:04:36,920 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-28 04:04:36,920 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-28 04:04:36,920 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2021-12-28 04:04:36,920 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2021-12-28 04:04:36,920 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-28 04:04:36,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-28 04:04:36,920 INFO L130 BoogieDeclarations]: Found specification of procedure verify_not_halted [2021-12-28 04:04:36,920 INFO L138 BoogieDeclarations]: Found implementation of procedure verify_not_halted [2021-12-28 04:04:36,921 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2021-12-28 04:04:36,921 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2021-12-28 04:04:36,921 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-12-28 04:04:36,921 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-12-28 04:04:36,921 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-28 04:04:36,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-28 04:04:36,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-28 04:04:36,921 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-28 04:04:36,922 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2021-12-28 04:04:36,922 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2021-12-28 04:04:36,922 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-28 04:04:36,922 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-28 04:04:36,922 INFO L130 BoogieDeclarations]: Found specification of procedure test_halt [2021-12-28 04:04:36,922 INFO L138 BoogieDeclarations]: Found implementation of procedure test_halt [2021-12-28 04:04:36,922 INFO L130 BoogieDeclarations]: Found specification of procedure usbtest_alloc_urb [2021-12-28 04:04:36,922 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtest_alloc_urb [2021-12-28 04:04:36,922 INFO L130 BoogieDeclarations]: Found specification of procedure unlink1 [2021-12-28 04:04:36,923 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink1 [2021-12-28 04:04:36,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 04:04:36,923 INFO L130 BoogieDeclarations]: Found specification of procedure ctrl_out [2021-12-28 04:04:36,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ctrl_out [2021-12-28 04:04:36,923 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-28 04:04:36,923 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-28 04:04:36,923 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2021-12-28 04:04:36,923 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2021-12-28 04:04:36,923 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_status [2021-12-28 04:04:36,924 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_status [2021-12-28 04:04:36,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 04:04:36,924 INFO L130 BoogieDeclarations]: Found specification of procedure is_good_config [2021-12-28 04:04:36,924 INFO L138 BoogieDeclarations]: Found implementation of procedure is_good_config [2021-12-28 04:04:36,924 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-12-28 04:04:36,924 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-12-28 04:04:36,924 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion [2021-12-28 04:04:36,924 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion [2021-12-28 04:04:36,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 04:04:36,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 04:04:36,925 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unlink_urb [2021-12-28 04:04:36,925 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unlink_urb [2021-12-28 04:04:36,925 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-12-28 04:04:36,925 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-12-28 04:04:36,925 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2021-12-28 04:04:36,925 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2021-12-28 04:04:36,925 INFO L130 BoogieDeclarations]: Found specification of procedure testdev_to_usbdev [2021-12-28 04:04:36,925 INFO L138 BoogieDeclarations]: Found implementation of procedure testdev_to_usbdev [2021-12-28 04:04:36,926 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2021-12-28 04:04:36,926 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2021-12-28 04:04:36,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 04:04:36,926 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_simple [2021-12-28 04:04:36,926 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_simple [2021-12-28 04:04:36,926 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2021-12-28 04:04:36,926 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2021-12-28 04:04:36,926 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2021-12-28 04:04:36,926 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2021-12-28 04:04:36,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-12-28 04:04:36,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-12-28 04:04:36,927 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-12-28 04:04:36,927 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-12-28 04:04:36,927 INFO L130 BoogieDeclarations]: Found specification of procedure simple_io [2021-12-28 04:04:36,927 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_io [2021-12-28 04:04:36,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 04:04:36,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 04:04:36,927 INFO L130 BoogieDeclarations]: Found specification of procedure simple_alloc_urb [2021-12-28 04:04:36,928 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_alloc_urb [2021-12-28 04:04:36,928 INFO L130 BoogieDeclarations]: Found specification of procedure simple_free_urb [2021-12-28 04:04:36,928 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_free_urb [2021-12-28 04:04:36,928 INFO L130 BoogieDeclarations]: Found specification of procedure simple_fill_buf [2021-12-28 04:04:36,928 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_fill_buf [2021-12-28 04:04:36,928 INFO L130 BoogieDeclarations]: Found specification of procedure do_gettimeofday [2021-12-28 04:04:36,928 INFO L138 BoogieDeclarations]: Found implementation of procedure do_gettimeofday [2021-12-28 04:04:36,928 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-28 04:04:36,928 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-28 04:04:36,929 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-28 04:04:36,929 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-28 04:04:36,929 INFO L130 BoogieDeclarations]: Found specification of procedure usbtest_ioctl [2021-12-28 04:04:36,929 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtest_ioctl [2021-12-28 04:04:36,929 INFO L130 BoogieDeclarations]: Found specification of procedure buffer_offset [2021-12-28 04:04:36,929 INFO L138 BoogieDeclarations]: Found implementation of procedure buffer_offset [2021-12-28 04:04:36,929 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-12-28 04:04:36,941 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-12-28 04:04:36,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 04:04:36,942 INFO L130 BoogieDeclarations]: Found specification of procedure usb_clear_halt [2021-12-28 04:04:36,942 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_clear_halt [2021-12-28 04:04:36,942 INFO L130 BoogieDeclarations]: Found specification of procedure usbtest_disconnect [2021-12-28 04:04:36,942 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtest_disconnect [2021-12-28 04:04:36,942 INFO L130 BoogieDeclarations]: Found specification of procedure check_guard_bytes [2021-12-28 04:04:36,942 INFO L138 BoogieDeclarations]: Found implementation of procedure check_guard_bytes [2021-12-28 04:04:36,942 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2021-12-28 04:04:36,942 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2021-12-28 04:04:36,943 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2021-12-28 04:04:36,943 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2021-12-28 04:04:36,943 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-28 04:04:36,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-28 04:04:36,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 04:04:36,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 04:04:36,943 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_descriptor [2021-12-28 04:04:36,943 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_descriptor [2021-12-28 04:04:37,355 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 04:04:37,357 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 04:04:37,707 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-28 04:04:39,087 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 04:04:39,098 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 04:04:39,098 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-28 04:04:39,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 04:04:39 BoogieIcfgContainer [2021-12-28 04:04:39,101 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 04:04:39,102 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 04:04:39,102 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 04:04:39,140 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 04:04:39,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 04:04:34" (1/3) ... [2021-12-28 04:04:39,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fa37ad9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 04:04:39, skipping insertion in model container [2021-12-28 04:04:39,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:04:36" (2/3) ... [2021-12-28 04:04:39,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fa37ad9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 04:04:39, skipping insertion in model container [2021-12-28 04:04:39,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 04:04:39" (3/3) ... [2021-12-28 04:04:39,143 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--misc--usbtest.ko-entry_point.cil.out.i [2021-12-28 04:04:39,146 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 04:04:39,146 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 04:04:39,186 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 04:04:39,191 INFO L339 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=PETRI_NET, 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-28 04:04:39,192 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 04:04:39,227 INFO L276 IsEmpty]: Start isEmpty. Operand has 1325 states, 999 states have (on average 1.4214214214214214) internal successors, (1420), 1014 states have internal predecessors, (1420), 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) [2021-12-28 04:04:39,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-28 04:04:39,233 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:04:39,234 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:04:39,234 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:04:39,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:04:39,238 INFO L85 PathProgramCache]: Analyzing trace with hash 810260350, now seen corresponding path program 1 times [2021-12-28 04:04:39,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:04:39,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273903641] [2021-12-28 04:04:39,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:04:39,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:04:39,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:39,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:04:39,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:39,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 04:04:39,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:39,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-28 04:04:39,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:39,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-28 04:04:39,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:39,579 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-28 04:04:39,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:04:39,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273903641] [2021-12-28 04:04:39,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273903641] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:04:39,580 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:04:39,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 04:04:39,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663140401] [2021-12-28 04:04:39,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:04:39,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 04:04:39,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:04:39,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 04:04:39,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 04:04:39,604 INFO L87 Difference]: Start difference. First operand has 1325 states, 999 states have (on average 1.4214214214214214) internal successors, (1420), 1014 states have internal predecessors, (1420), 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 5 states, 5 states have (on average 5.0) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-28 04:04:42,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:04:42,954 INFO L93 Difference]: Finished difference Result 2997 states and 4536 transitions. [2021-12-28 04:04:42,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 04:04:42,956 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (7), 4 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 39 [2021-12-28 04:04:42,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:04:42,983 INFO L225 Difference]: With dead ends: 2997 [2021-12-28 04:04:42,983 INFO L226 Difference]: Without dead ends: 1640 [2021-12-28 04:04:42,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-28 04:04:43,001 INFO L933 BasicCegarLoop]: 1711 mSDtfsCounter, 1245 mSDsluCounter, 2787 mSDsCounter, 0 mSdLazyCounter, 2111 mSolverCounterSat, 776 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1319 SdHoareTripleChecker+Valid, 4498 SdHoareTripleChecker+Invalid, 2887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 776 IncrementalHoareTripleChecker+Valid, 2111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-28 04:04:43,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1319 Valid, 4498 Invalid, 2887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [776 Valid, 2111 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-12-28 04:04:43,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1640 states. [2021-12-28 04:04:43,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1640 to 1338. [2021-12-28 04:04:43,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1338 states, 1011 states have (on average 1.4124629080118694) internal successors, (1428), 1022 states have internal predecessors, (1428), 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) [2021-12-28 04:04:43,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1338 states to 1338 states and 1937 transitions. [2021-12-28 04:04:43,110 INFO L78 Accepts]: Start accepts. Automaton has 1338 states and 1937 transitions. Word has length 39 [2021-12-28 04:04:43,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:04:43,111 INFO L470 AbstractCegarLoop]: Abstraction has 1338 states and 1937 transitions. [2021-12-28 04:04:43,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-28 04:04:43,112 INFO L276 IsEmpty]: Start isEmpty. Operand 1338 states and 1937 transitions. [2021-12-28 04:04:43,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-28 04:04:43,113 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:04:43,114 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:04:43,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 04:04:43,114 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:04:43,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:04:43,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1447521310, now seen corresponding path program 1 times [2021-12-28 04:04:43,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:04:43,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182665335] [2021-12-28 04:04:43,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:04:43,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:04:43,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:43,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:04:43,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:43,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 04:04:43,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:43,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-28 04:04:43,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:43,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-28 04:04:43,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:43,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-28 04:04:43,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:43,398 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-28 04:04:43,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:04:43,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182665335] [2021-12-28 04:04:43,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182665335] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:04:43,401 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:04:43,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 04:04:43,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164932776] [2021-12-28 04:04:43,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:04:43,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 04:04:43,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:04:43,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 04:04:43,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 04:04:43,409 INFO L87 Difference]: Start difference. First operand 1338 states and 1937 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-12-28 04:04:46,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:04:46,562 INFO L93 Difference]: Finished difference Result 1672 states and 2482 transitions. [2021-12-28 04:04:46,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 04:04:46,563 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (8), 5 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 60 [2021-12-28 04:04:46,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:04:46,575 INFO L225 Difference]: With dead ends: 1672 [2021-12-28 04:04:46,575 INFO L226 Difference]: Without dead ends: 1669 [2021-12-28 04:04:46,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-28 04:04:46,584 INFO L933 BasicCegarLoop]: 1680 mSDtfsCounter, 2931 mSDsluCounter, 1515 mSDsCounter, 0 mSdLazyCounter, 1450 mSolverCounterSat, 1172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3070 SdHoareTripleChecker+Valid, 3195 SdHoareTripleChecker+Invalid, 2622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1172 IncrementalHoareTripleChecker+Valid, 1450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-12-28 04:04:46,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3070 Valid, 3195 Invalid, 2622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1172 Valid, 1450 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-12-28 04:04:46,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1669 states. [2021-12-28 04:04:46,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1669 to 1368. [2021-12-28 04:04:46,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1368 states, 1030 states have (on average 1.4058252427184466) internal successors, (1448), 1041 states have internal predecessors, (1448), 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) [2021-12-28 04:04:46,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1368 states to 1368 states and 1965 transitions. [2021-12-28 04:04:46,683 INFO L78 Accepts]: Start accepts. Automaton has 1368 states and 1965 transitions. Word has length 60 [2021-12-28 04:04:46,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:04:46,683 INFO L470 AbstractCegarLoop]: Abstraction has 1368 states and 1965 transitions. [2021-12-28 04:04:46,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-12-28 04:04:46,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1368 states and 1965 transitions. [2021-12-28 04:04:46,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-28 04:04:46,705 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:04:46,705 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:04:46,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 04:04:46,706 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:04:46,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:04:46,707 INFO L85 PathProgramCache]: Analyzing trace with hash -2145409867, now seen corresponding path program 1 times [2021-12-28 04:04:46,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:04:46,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724456190] [2021-12-28 04:04:46,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:04:46,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:04:46,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:46,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:04:46,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:46,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 04:04:46,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:46,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-28 04:04:46,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:46,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-28 04:04:46,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:46,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-28 04:04:46,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:46,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 04:04:46,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:46,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:04:46,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:46,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 04:04:46,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:46,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-28 04:04:46,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:46,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:04:46,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:46,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-28 04:04:46,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:46,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-28 04:04:46,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:46,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-28 04:04:46,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:46,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-28 04:04:46,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:04:46,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724456190] [2021-12-28 04:04:46,986 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-12-28 04:04:46,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25917702] [2021-12-28 04:04:46,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:04:46,987 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 04:04:46,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 04:04:47,004 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 04:04:47,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-28 04:04:47,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:47,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 2421 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-28 04:04:47,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 04:04:47,859 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-28 04:04:47,859 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 04:04:47,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25917702] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:04:47,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:04:47,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 04:04:47,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922577396] [2021-12-28 04:04:47,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:04:47,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 04:04:47,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:04:47,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 04:04:47,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-28 04:04:47,862 INFO L87 Difference]: Start difference. First operand 1368 states and 1965 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-28 04:04:47,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:04:47,919 INFO L93 Difference]: Finished difference Result 2713 states and 3907 transitions. [2021-12-28 04:04:47,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 04:04:47,920 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 160 [2021-12-28 04:04:47,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:04:47,926 INFO L225 Difference]: With dead ends: 2713 [2021-12-28 04:04:47,927 INFO L226 Difference]: Without dead ends: 1369 [2021-12-28 04:04:47,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-28 04:04:47,932 INFO L933 BasicCegarLoop]: 1896 mSDtfsCounter, 0 mSDsluCounter, 1891 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3787 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 04:04:47,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 3787 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 04:04:47,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1369 states. [2021-12-28 04:04:47,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1369 to 1369. [2021-12-28 04:04:47,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1369 states, 1031 states have (on average 1.405431619786615) internal successors, (1449), 1042 states have internal predecessors, (1449), 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) [2021-12-28 04:04:47,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1369 states to 1369 states and 1966 transitions. [2021-12-28 04:04:47,974 INFO L78 Accepts]: Start accepts. Automaton has 1369 states and 1966 transitions. Word has length 160 [2021-12-28 04:04:47,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:04:47,975 INFO L470 AbstractCegarLoop]: Abstraction has 1369 states and 1966 transitions. [2021-12-28 04:04:47,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-28 04:04:47,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1369 states and 1966 transitions. [2021-12-28 04:04:47,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-28 04:04:47,980 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:04:47,980 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:04:48,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-28 04:04:48,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 04:04:48,202 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:04:48,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:04:48,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1584710089, now seen corresponding path program 1 times [2021-12-28 04:04:48,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:04:48,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385454697] [2021-12-28 04:04:48,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:04:48,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:04:48,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:48,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:04:48,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:48,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 04:04:48,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:48,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-28 04:04:48,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:48,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-28 04:04:48,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:48,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-28 04:04:48,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:48,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 04:04:48,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:48,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:04:48,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:48,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 04:04:48,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:48,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-28 04:04:48,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:48,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:04:48,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:48,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-28 04:04:48,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:48,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-28 04:04:48,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:48,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-28 04:04:48,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:48,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-28 04:04:48,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:04:48,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385454697] [2021-12-28 04:04:48,436 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-12-28 04:04:48,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091479293] [2021-12-28 04:04:48,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:04:48,436 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 04:04:48,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 04:04:48,442 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 04:04:48,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-28 04:04:48,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:49,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 2426 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-28 04:04:49,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 04:04:49,291 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-28 04:04:49,291 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 04:04:49,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091479293] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:04:49,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:04:49,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 04:04:49,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23463014] [2021-12-28 04:04:49,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:04:49,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 04:04:49,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:04:49,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 04:04:49,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-12-28 04:04:49,296 INFO L87 Difference]: Start difference. First operand 1369 states and 1966 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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) [2021-12-28 04:04:49,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:04:49,392 INFO L93 Difference]: Finished difference Result 2805 states and 4014 transitions. [2021-12-28 04:04:49,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 04:04:49,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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 160 [2021-12-28 04:04:49,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:04:49,398 INFO L225 Difference]: With dead ends: 2805 [2021-12-28 04:04:49,398 INFO L226 Difference]: Without dead ends: 1460 [2021-12-28 04:04:49,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-12-28 04:04:49,404 INFO L933 BasicCegarLoop]: 1912 mSDtfsCounter, 281 mSDsluCounter, 1672 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 3584 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 04:04:49,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 3584 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 04:04:49,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2021-12-28 04:04:49,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 1451. [2021-12-28 04:04:49,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1451 states, 1095 states have (on average 1.3954337899543379) internal successors, (1528), 1106 states have internal predecessors, (1528), 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) [2021-12-28 04:04:49,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1451 states to 1451 states and 2057 transitions. [2021-12-28 04:04:49,445 INFO L78 Accepts]: Start accepts. Automaton has 1451 states and 2057 transitions. Word has length 160 [2021-12-28 04:04:49,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:04:49,446 INFO L470 AbstractCegarLoop]: Abstraction has 1451 states and 2057 transitions. [2021-12-28 04:04:49,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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) [2021-12-28 04:04:49,447 INFO L276 IsEmpty]: Start isEmpty. Operand 1451 states and 2057 transitions. [2021-12-28 04:04:49,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-12-28 04:04:49,451 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:04:49,451 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:04:49,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-28 04:04:49,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-12-28 04:04:49,672 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:04:49,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:04:49,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1238919696, now seen corresponding path program 1 times [2021-12-28 04:04:49,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:04:49,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694673248] [2021-12-28 04:04:49,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:04:49,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:04:49,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:49,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:04:49,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:49,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 04:04:49,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:49,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-28 04:04:49,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:49,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-28 04:04:49,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:49,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-28 04:04:49,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:49,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 04:04:49,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:49,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-28 04:04:49,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:49,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:04:49,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:49,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-28 04:04:49,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:49,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-28 04:04:49,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:49,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:04:49,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:49,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-28 04:04:49,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:49,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-28 04:04:49,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:49,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-28 04:04:49,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:49,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-28 04:04:49,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:04:49,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694673248] [2021-12-28 04:04:49,865 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-12-28 04:04:49,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269640363] [2021-12-28 04:04:49,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:04:49,866 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 04:04:49,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 04:04:49,880 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 04:04:49,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-28 04:04:50,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:50,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 2517 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-28 04:04:50,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 04:04:50,763 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-28 04:04:50,763 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 04:04:50,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269640363] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:04:50,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:04:50,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 04:04:50,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673077918] [2021-12-28 04:04:50,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:04:50,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 04:04:50,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:04:50,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 04:04:50,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-28 04:04:50,765 INFO L87 Difference]: Start difference. First operand 1451 states and 2057 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-28 04:04:50,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:04:50,932 INFO L93 Difference]: Finished difference Result 4069 states and 5793 transitions. [2021-12-28 04:04:50,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 04:04:50,932 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 174 [2021-12-28 04:04:50,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:04:50,942 INFO L225 Difference]: With dead ends: 4069 [2021-12-28 04:04:50,942 INFO L226 Difference]: Without dead ends: 2642 [2021-12-28 04:04:50,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-28 04:04:50,947 INFO L933 BasicCegarLoop]: 2106 mSDtfsCounter, 1866 mSDsluCounter, 1666 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1866 SdHoareTripleChecker+Valid, 3772 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 04:04:50,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1866 Valid, 3772 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 04:04:50,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2642 states. [2021-12-28 04:04:51,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2642 to 2635. [2021-12-28 04:04:51,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2635 states, 1980 states have (on average 1.3984848484848484) internal successors, (2769), 2002 states have internal predecessors, (2769), 492 states have call successors, (492), 163 states have call predecessors, (492), 162 states have return successors, (491), 483 states have call predecessors, (491), 491 states have call successors, (491) [2021-12-28 04:04:51,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2635 states to 2635 states and 3752 transitions. [2021-12-28 04:04:51,014 INFO L78 Accepts]: Start accepts. Automaton has 2635 states and 3752 transitions. Word has length 174 [2021-12-28 04:04:51,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:04:51,014 INFO L470 AbstractCegarLoop]: Abstraction has 2635 states and 3752 transitions. [2021-12-28 04:04:51,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-28 04:04:51,015 INFO L276 IsEmpty]: Start isEmpty. Operand 2635 states and 3752 transitions. [2021-12-28 04:04:51,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-12-28 04:04:51,022 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:04:51,022 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:04:51,046 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-28 04:04:51,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 04:04:51,236 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:04:51,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:04:51,236 INFO L85 PathProgramCache]: Analyzing trace with hash -420530186, now seen corresponding path program 1 times [2021-12-28 04:04:51,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:04:51,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833099763] [2021-12-28 04:04:51,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:04:51,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:04:51,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:51,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:04:51,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:51,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 04:04:51,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:51,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-28 04:04:51,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:51,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-28 04:04:51,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:51,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-28 04:04:51,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:51,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-28 04:04:51,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:51,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 04:04:51,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:51,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:04:51,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:51,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-28 04:04:51,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:51,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-28 04:04:51,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:51,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:04:51,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:51,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-28 04:04:51,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:51,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-28 04:04:51,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:51,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-28 04:04:51,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:51,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-28 04:04:51,439 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:04:51,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833099763] [2021-12-28 04:04:51,439 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-12-28 04:04:51,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658977171] [2021-12-28 04:04:51,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:04:51,440 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 04:04:51,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 04:04:51,441 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 04:04:51,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-28 04:04:51,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:51,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 2518 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-28 04:04:51,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 04:04:52,217 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-28 04:04:52,217 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 04:04:52,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658977171] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:04:52,217 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:04:52,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 04:04:52,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056239161] [2021-12-28 04:04:52,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:04:52,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 04:04:52,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:04:52,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 04:04:52,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-28 04:04:52,219 INFO L87 Difference]: Start difference. First operand 2635 states and 3752 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-28 04:04:52,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:04:52,333 INFO L93 Difference]: Finished difference Result 5474 states and 7787 transitions. [2021-12-28 04:04:52,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 04:04:52,334 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 175 [2021-12-28 04:04:52,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:04:52,344 INFO L225 Difference]: With dead ends: 5474 [2021-12-28 04:04:52,344 INFO L226 Difference]: Without dead ends: 2863 [2021-12-28 04:04:52,351 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-28 04:04:52,352 INFO L933 BasicCegarLoop]: 2179 mSDtfsCounter, 343 mSDsluCounter, 4003 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 6182 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 04:04:52,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 6182 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 04:04:52,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2863 states. [2021-12-28 04:04:52,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2863 to 2637. [2021-12-28 04:04:52,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2637 states, 1982 states have (on average 1.398082744702321) internal successors, (2771), 2004 states have internal predecessors, (2771), 492 states have call successors, (492), 163 states have call predecessors, (492), 162 states have return successors, (491), 483 states have call predecessors, (491), 491 states have call successors, (491) [2021-12-28 04:04:52,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2637 states to 2637 states and 3754 transitions. [2021-12-28 04:04:52,427 INFO L78 Accepts]: Start accepts. Automaton has 2637 states and 3754 transitions. Word has length 175 [2021-12-28 04:04:52,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:04:52,428 INFO L470 AbstractCegarLoop]: Abstraction has 2637 states and 3754 transitions. [2021-12-28 04:04:52,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-28 04:04:52,428 INFO L276 IsEmpty]: Start isEmpty. Operand 2637 states and 3754 transitions. [2021-12-28 04:04:52,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-12-28 04:04:52,435 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:04:52,436 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:04:52,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-28 04:04:52,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 04:04:52,657 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:04:52,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:04:52,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1537263626, now seen corresponding path program 1 times [2021-12-28 04:04:52,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:04:52,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359101788] [2021-12-28 04:04:52,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:04:52,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:04:52,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:52,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:04:52,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:52,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 04:04:52,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:52,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-28 04:04:52,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:52,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-28 04:04:52,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:52,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-28 04:04:52,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:52,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 04:04:52,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:52,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:04:52,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:52,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-28 04:04:52,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:52,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-28 04:04:52,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:52,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:04:52,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:52,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-28 04:04:52,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:52,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-28 04:04:52,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:52,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:04:52,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:52,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-28 04:04:52,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:52,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-28 04:04:52,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:52,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-28 04:04:52,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:52,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-28 04:04:52,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:04:52,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359101788] [2021-12-28 04:04:52,886 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-12-28 04:04:52,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441656709] [2021-12-28 04:04:52,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:04:52,886 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 04:04:52,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 04:04:52,888 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 04:04:52,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-28 04:04:53,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:53,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 2552 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-28 04:04:53,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 04:04:53,811 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-28 04:04:53,811 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 04:04:53,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441656709] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:04:53,812 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:04:53,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 04:04:53,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373932734] [2021-12-28 04:04:53,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:04:53,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 04:04:53,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:04:53,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 04:04:53,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-28 04:04:53,814 INFO L87 Difference]: Start difference. First operand 2637 states and 3754 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-28 04:04:53,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:04:53,930 INFO L93 Difference]: Finished difference Result 5479 states and 7792 transitions. [2021-12-28 04:04:53,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 04:04:53,930 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 185 [2021-12-28 04:04:53,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:04:53,942 INFO L225 Difference]: With dead ends: 5479 [2021-12-28 04:04:53,942 INFO L226 Difference]: Without dead ends: 2866 [2021-12-28 04:04:53,951 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-28 04:04:53,952 INFO L933 BasicCegarLoop]: 2179 mSDtfsCounter, 343 mSDsluCounter, 4003 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 6182 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 04:04:53,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 6182 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 04:04:53,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2866 states. [2021-12-28 04:04:54,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2866 to 2637. [2021-12-28 04:04:54,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2637 states, 1982 states have (on average 1.398082744702321) internal successors, (2771), 2004 states have internal predecessors, (2771), 492 states have call successors, (492), 163 states have call predecessors, (492), 162 states have return successors, (491), 483 states have call predecessors, (491), 491 states have call successors, (491) [2021-12-28 04:04:54,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2637 states to 2637 states and 3754 transitions. [2021-12-28 04:04:54,048 INFO L78 Accepts]: Start accepts. Automaton has 2637 states and 3754 transitions. Word has length 185 [2021-12-28 04:04:54,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:04:54,049 INFO L470 AbstractCegarLoop]: Abstraction has 2637 states and 3754 transitions. [2021-12-28 04:04:54,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-28 04:04:54,049 INFO L276 IsEmpty]: Start isEmpty. Operand 2637 states and 3754 transitions. [2021-12-28 04:04:54,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-12-28 04:04:54,062 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:04:54,062 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:04:54,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-28 04:04:54,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 04:04:54,288 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:04:54,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:04:54,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1551735590, now seen corresponding path program 1 times [2021-12-28 04:04:54,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:04:54,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752499976] [2021-12-28 04:04:54,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:04:54,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:04:54,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:54,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:04:54,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:54,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 04:04:54,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:54,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-28 04:04:54,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:54,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-28 04:04:54,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:54,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-28 04:04:54,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:54,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 04:04:54,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:54,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:04:54,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:54,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-28 04:04:54,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:54,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:04:54,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:54,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 04:04:54,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:54,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:04:54,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:54,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-28 04:04:54,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:54,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-28 04:04:54,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:54,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-28 04:04:54,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:54,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-28 04:04:54,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:54,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:04:54,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:54,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-28 04:04:54,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:54,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-28 04:04:54,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:54,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:04:54,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:54,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-28 04:04:54,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:54,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-28 04:04:54,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:54,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-12-28 04:04:54,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:54,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-12-28 04:04:54,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:04:54,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752499976] [2021-12-28 04:04:54,496 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-12-28 04:04:54,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761367193] [2021-12-28 04:04:54,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:04:54,497 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 04:04:54,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 04:04:54,498 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 04:04:54,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-28 04:04:55,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:55,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 2798 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-28 04:04:55,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 04:04:55,548 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-28 04:04:55,548 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 04:04:55,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761367193] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:04:55,549 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:04:55,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 04:04:55,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160860118] [2021-12-28 04:04:55,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:04:55,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 04:04:55,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:04:55,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 04:04:55,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-12-28 04:04:55,551 INFO L87 Difference]: Start difference. First operand 2637 states and 3754 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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) [2021-12-28 04:04:55,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:04:55,646 INFO L93 Difference]: Finished difference Result 5251 states and 7483 transitions. [2021-12-28 04:04:55,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 04:04:55,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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 228 [2021-12-28 04:04:55,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:04:55,663 INFO L225 Difference]: With dead ends: 5251 [2021-12-28 04:04:55,663 INFO L226 Difference]: Without dead ends: 2638 [2021-12-28 04:04:55,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-12-28 04:04:55,676 INFO L933 BasicCegarLoop]: 1896 mSDtfsCounter, 0 mSDsluCounter, 1891 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3787 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 04:04:55,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 3787 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 04:04:55,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2638 states. [2021-12-28 04:04:55,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2638 to 2638. [2021-12-28 04:04:55,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2638 states, 1983 states have (on average 1.3978819969742813) internal successors, (2772), 2005 states have internal predecessors, (2772), 492 states have call successors, (492), 163 states have call predecessors, (492), 162 states have return successors, (491), 483 states have call predecessors, (491), 491 states have call successors, (491) [2021-12-28 04:04:55,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2638 states to 2638 states and 3755 transitions. [2021-12-28 04:04:55,805 INFO L78 Accepts]: Start accepts. Automaton has 2638 states and 3755 transitions. Word has length 228 [2021-12-28 04:04:55,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:04:55,805 INFO L470 AbstractCegarLoop]: Abstraction has 2638 states and 3755 transitions. [2021-12-28 04:04:55,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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) [2021-12-28 04:04:55,806 INFO L276 IsEmpty]: Start isEmpty. Operand 2638 states and 3755 transitions. [2021-12-28 04:04:55,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-12-28 04:04:55,818 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:04:55,818 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:04:55,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-28 04:04:56,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 04:04:56,036 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:04:56,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:04:56,036 INFO L85 PathProgramCache]: Analyzing trace with hash 607348504, now seen corresponding path program 1 times [2021-12-28 04:04:56,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:04:56,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560974935] [2021-12-28 04:04:56,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:04:56,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:04:56,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:56,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:04:56,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:56,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 04:04:56,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:56,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-28 04:04:56,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:56,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-28 04:04:56,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:56,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-28 04:04:56,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:56,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 04:04:56,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:56,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:04:56,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:56,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-28 04:04:56,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:56,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:04:56,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:56,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 04:04:56,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:56,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:04:56,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:56,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-28 04:04:56,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:56,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-28 04:04:56,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:56,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-28 04:04:56,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:56,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-28 04:04:56,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:56,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:04:56,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:56,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-28 04:04:56,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:56,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-28 04:04:56,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:56,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:04:56,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:56,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-28 04:04:56,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:56,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-28 04:04:56,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:56,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-12-28 04:04:56,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:56,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-12-28 04:04:56,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:04:56,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560974935] [2021-12-28 04:04:56,338 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-12-28 04:04:56,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151386545] [2021-12-28 04:04:56,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:04:56,338 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 04:04:56,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 04:04:56,339 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 04:04:56,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-28 04:04:56,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:56,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 2801 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-28 04:04:56,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 04:04:57,275 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-28 04:04:57,276 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 04:04:57,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151386545] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:04:57,276 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:04:57,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 04:04:57,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583888750] [2021-12-28 04:04:57,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:04:57,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 04:04:57,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:04:57,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 04:04:57,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-12-28 04:04:57,277 INFO L87 Difference]: Start difference. First operand 2638 states and 3755 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 3 states have internal predecessors, (153), 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) [2021-12-28 04:04:57,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:04:57,364 INFO L93 Difference]: Finished difference Result 5252 states and 7483 transitions. [2021-12-28 04:04:57,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 04:04:57,365 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 3 states have internal predecessors, (153), 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 228 [2021-12-28 04:04:57,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:04:57,375 INFO L225 Difference]: With dead ends: 5252 [2021-12-28 04:04:57,375 INFO L226 Difference]: Without dead ends: 2638 [2021-12-28 04:04:57,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-12-28 04:04:57,382 INFO L933 BasicCegarLoop]: 1892 mSDtfsCounter, 1814 mSDsluCounter, 1889 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1814 SdHoareTripleChecker+Valid, 3781 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 04:04:57,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1814 Valid, 3781 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 04:04:57,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2638 states. [2021-12-28 04:04:57,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2638 to 2638. [2021-12-28 04:04:57,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2638 states, 1983 states have (on average 1.3973777105395866) internal successors, (2771), 2005 states have internal predecessors, (2771), 492 states have call successors, (492), 163 states have call predecessors, (492), 162 states have return successors, (491), 483 states have call predecessors, (491), 491 states have call successors, (491) [2021-12-28 04:04:57,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2638 states to 2638 states and 3754 transitions. [2021-12-28 04:04:57,520 INFO L78 Accepts]: Start accepts. Automaton has 2638 states and 3754 transitions. Word has length 228 [2021-12-28 04:04:57,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:04:57,521 INFO L470 AbstractCegarLoop]: Abstraction has 2638 states and 3754 transitions. [2021-12-28 04:04:57,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 3 states have internal predecessors, (153), 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) [2021-12-28 04:04:57,521 INFO L276 IsEmpty]: Start isEmpty. Operand 2638 states and 3754 transitions. [2021-12-28 04:04:57,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-12-28 04:04:57,528 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:04:57,528 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:04:57,553 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-28 04:04:57,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 04:04:57,750 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:04:57,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:04:57,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1025237206, now seen corresponding path program 1 times [2021-12-28 04:04:57,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:04:57,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233050656] [2021-12-28 04:04:57,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:04:57,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:04:57,821 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 04:04:57,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [138390003] [2021-12-28 04:04:57,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:04:57,822 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 04:04:57,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 04:04:57,823 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 04:04:57,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-28 04:04:58,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:04:58,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 2804 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-28 04:04:58,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 04:04:58,867 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-28 04:04:58,868 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 04:04:58,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:04:58,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233050656] [2021-12-28 04:04:58,868 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 04:04:58,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138390003] [2021-12-28 04:04:58,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138390003] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:04:58,868 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:04:58,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 04:04:58,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902220790] [2021-12-28 04:04:58,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:04:58,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 04:04:58,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:04:58,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 04:04:58,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 04:04:58,869 INFO L87 Difference]: Start difference. First operand 2638 states and 3754 transitions. Second operand has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 3 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-12-28 04:04:59,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:04:59,135 INFO L93 Difference]: Finished difference Result 5699 states and 8128 transitions. [2021-12-28 04:04:59,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 04:04:59,135 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 3 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 228 [2021-12-28 04:04:59,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:04:59,152 INFO L225 Difference]: With dead ends: 5699 [2021-12-28 04:04:59,153 INFO L226 Difference]: Without dead ends: 3085 [2021-12-28 04:04:59,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-28 04:04:59,163 INFO L933 BasicCegarLoop]: 2209 mSDtfsCounter, 686 mSDsluCounter, 8531 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 10740 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 04:04:59,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [702 Valid, 10740 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 04:04:59,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3085 states. [2021-12-28 04:04:59,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3085 to 2644. [2021-12-28 04:04:59,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2644 states, 1987 states have (on average 1.3965777554101662) internal successors, (2775), 2009 states have internal predecessors, (2775), 494 states have call successors, (494), 163 states have call predecessors, (494), 162 states have return successors, (493), 485 states have call predecessors, (493), 493 states have call successors, (493) [2021-12-28 04:04:59,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2644 states to 2644 states and 3762 transitions. [2021-12-28 04:04:59,293 INFO L78 Accepts]: Start accepts. Automaton has 2644 states and 3762 transitions. Word has length 228 [2021-12-28 04:04:59,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:04:59,294 INFO L470 AbstractCegarLoop]: Abstraction has 2644 states and 3762 transitions. [2021-12-28 04:04:59,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 3 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-12-28 04:04:59,294 INFO L276 IsEmpty]: Start isEmpty. Operand 2644 states and 3762 transitions. [2021-12-28 04:04:59,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-12-28 04:04:59,303 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:04:59,303 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:04:59,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-28 04:04:59,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-28 04:04:59,523 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:04:59,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:04:59,523 INFO L85 PathProgramCache]: Analyzing trace with hash 651738589, now seen corresponding path program 1 times [2021-12-28 04:04:59,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:04:59,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837318942] [2021-12-28 04:04:59,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:04:59,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:04:59,576 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 04:04:59,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [257247707] [2021-12-28 04:04:59,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:04:59,577 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 04:04:59,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 04:04:59,578 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 04:04:59,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-28 04:05:00,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:05:00,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 2843 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-28 04:05:00,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 04:05:00,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 04:05:00,975 INFO L387 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 [2021-12-28 04:05:01,203 INFO L387 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 [2021-12-28 04:05:01,259 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 21 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-12-28 04:05:01,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 04:05:01,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:05:01,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837318942] [2021-12-28 04:05:01,472 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 04:05:01,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257247707] [2021-12-28 04:05:01,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257247707] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 04:05:01,472 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-28 04:05:01,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-12-28 04:05:01,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642181990] [2021-12-28 04:05:01,472 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-28 04:05:01,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-28 04:05:01,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:05:01,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-28 04:05:01,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2021-12-28 04:05:01,473 INFO L87 Difference]: Start difference. First operand 2644 states and 3762 transitions. Second operand has 16 states, 16 states have (on average 9.9375) internal successors, (159), 14 states have internal predecessors, (159), 9 states have call successors, (30), 5 states have call predecessors, (30), 4 states have return successors, (27), 9 states have call predecessors, (27), 8 states have call successors, (27) [2021-12-28 04:05:08,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:05:08,194 INFO L93 Difference]: Finished difference Result 6819 states and 9931 transitions. [2021-12-28 04:05:08,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-28 04:05:08,195 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 9.9375) internal successors, (159), 14 states have internal predecessors, (159), 9 states have call successors, (30), 5 states have call predecessors, (30), 4 states have return successors, (27), 9 states have call predecessors, (27), 8 states have call successors, (27) Word has length 232 [2021-12-28 04:05:08,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:05:08,209 INFO L225 Difference]: With dead ends: 6819 [2021-12-28 04:05:08,209 INFO L226 Difference]: Without dead ends: 4199 [2021-12-28 04:05:08,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 235 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=151, Invalid=719, Unknown=0, NotChecked=0, Total=870 [2021-12-28 04:05:08,216 INFO L933 BasicCegarLoop]: 1821 mSDtfsCounter, 4220 mSDsluCounter, 18411 mSDsCounter, 0 mSdLazyCounter, 6105 mSolverCounterSat, 552 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4250 SdHoareTripleChecker+Valid, 20232 SdHoareTripleChecker+Invalid, 7359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 552 IncrementalHoareTripleChecker+Valid, 6105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 702 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-12-28 04:05:08,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4250 Valid, 20232 Invalid, 7359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [552 Valid, 6105 Invalid, 0 Unknown, 702 Unchecked, 6.2s Time] [2021-12-28 04:05:08,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4199 states. [2021-12-28 04:05:08,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4199 to 4017. [2021-12-28 04:05:08,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4017 states, 3062 states have (on average 1.4291312867406925) internal successors, (4376), 3102 states have internal predecessors, (4376), 765 states have call successors, (765), 189 states have call predecessors, (765), 189 states have return successors, (766), 747 states have call predecessors, (766), 764 states have call successors, (766) [2021-12-28 04:05:08,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4017 states to 4017 states and 5907 transitions. [2021-12-28 04:05:08,366 INFO L78 Accepts]: Start accepts. Automaton has 4017 states and 5907 transitions. Word has length 232 [2021-12-28 04:05:08,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:05:08,367 INFO L470 AbstractCegarLoop]: Abstraction has 4017 states and 5907 transitions. [2021-12-28 04:05:08,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 9.9375) internal successors, (159), 14 states have internal predecessors, (159), 9 states have call successors, (30), 5 states have call predecessors, (30), 4 states have return successors, (27), 9 states have call predecessors, (27), 8 states have call successors, (27) [2021-12-28 04:05:08,368 INFO L276 IsEmpty]: Start isEmpty. Operand 4017 states and 5907 transitions. [2021-12-28 04:05:08,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-12-28 04:05:08,378 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:05:08,378 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:05:08,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-28 04:05:08,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 04:05:08,592 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:05:08,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:05:08,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1744589070, now seen corresponding path program 1 times [2021-12-28 04:05:08,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:05:08,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017129040] [2021-12-28 04:05:08,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:05:08,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:05:08,659 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 04:05:08,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [532437910] [2021-12-28 04:05:08,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:05:08,673 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 04:05:08,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 04:05:08,675 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 04:05:08,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-28 04:05:09,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:05:09,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 2885 conjuncts, 70 conjunts are in the unsatisfiable core [2021-12-28 04:05:09,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 04:05:09,361 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2021-12-28 04:05:13,944 INFO L387 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 13 treesize of output 15 [2021-12-28 04:05:13,961 INFO L387 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 13 treesize of output 15 [2021-12-28 04:05:14,144 INFO L387 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 13 treesize of output 15 [2021-12-28 04:05:14,198 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1654 (Array Int Int))) (= (store |c_old(#memory_int)| |c_usb_set_intfdata_#in~intf#1.base| v_ArrVal_1654) |c_#memory_int|)) is different from true [2021-12-28 04:05:14,212 INFO L387 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 13 treesize of output 15 [2021-12-28 04:05:14,593 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-28 04:05:14,714 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 33 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-28 04:05:14,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 04:05:15,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:05:15,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017129040] [2021-12-28 04:05:15,596 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 04:05:15,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532437910] [2021-12-28 04:05:15,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532437910] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 04:05:15,597 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-28 04:05:15,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2021-12-28 04:05:15,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811593445] [2021-12-28 04:05:15,597 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-28 04:05:15,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-28 04:05:15,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:05:15,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-28 04:05:15,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=437, Unknown=4, NotChecked=42, Total=552 [2021-12-28 04:05:15,598 INFO L87 Difference]: Start difference. First operand 4017 states and 5907 transitions. Second operand has 22 states, 22 states have (on average 7.681818181818182) internal successors, (169), 18 states have internal predecessors, (169), 9 states have call successors, (31), 5 states have call predecessors, (31), 8 states have return successors, (28), 12 states have call predecessors, (28), 9 states have call successors, (28) [2021-12-28 04:05:30,542 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:05:32,663 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:05:34,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:05:34,083 INFO L93 Difference]: Finished difference Result 7994 states and 11877 transitions. [2021-12-28 04:05:34,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-12-28 04:05:34,084 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 7.681818181818182) internal successors, (169), 18 states have internal predecessors, (169), 9 states have call successors, (31), 5 states have call predecessors, (31), 8 states have return successors, (28), 12 states have call predecessors, (28), 9 states have call successors, (28) Word has length 239 [2021-12-28 04:05:34,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:05:34,120 INFO L225 Difference]: With dead ends: 7994 [2021-12-28 04:05:34,121 INFO L226 Difference]: Without dead ends: 5374 [2021-12-28 04:05:34,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 285 SyntacticMatches, 14 SemanticMatches, 31 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=118, Invalid=870, Unknown=8, NotChecked=60, Total=1056 [2021-12-28 04:05:34,133 INFO L933 BasicCegarLoop]: 2319 mSDtfsCounter, 1425 mSDsluCounter, 10002 mSDsCounter, 0 mSdLazyCounter, 3466 mSolverCounterSat, 377 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 12321 SdHoareTripleChecker+Invalid, 9188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 377 IncrementalHoareTripleChecker+Valid, 3466 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 5343 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2021-12-28 04:05:34,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1549 Valid, 12321 Invalid, 9188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [377 Valid, 3466 Invalid, 2 Unknown, 5343 Unchecked, 8.0s Time] [2021-12-28 04:05:34,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5374 states. [2021-12-28 04:05:34,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5374 to 4295. [2021-12-28 04:05:34,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4295 states, 3304 states have (on average 1.4312953995157385) internal successors, (4729), 3347 states have internal predecessors, (4729), 785 states have call successors, (785), 203 states have call predecessors, (785), 205 states have return successors, (793), 766 states have call predecessors, (793), 784 states have call successors, (793) [2021-12-28 04:05:34,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4295 states to 4295 states and 6307 transitions. [2021-12-28 04:05:34,392 INFO L78 Accepts]: Start accepts. Automaton has 4295 states and 6307 transitions. Word has length 239 [2021-12-28 04:05:34,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:05:34,392 INFO L470 AbstractCegarLoop]: Abstraction has 4295 states and 6307 transitions. [2021-12-28 04:05:34,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 7.681818181818182) internal successors, (169), 18 states have internal predecessors, (169), 9 states have call successors, (31), 5 states have call predecessors, (31), 8 states have return successors, (28), 12 states have call predecessors, (28), 9 states have call successors, (28) [2021-12-28 04:05:34,393 INFO L276 IsEmpty]: Start isEmpty. Operand 4295 states and 6307 transitions. [2021-12-28 04:05:34,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2021-12-28 04:05:34,408 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:05:34,408 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:05:34,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-28 04:05:34,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-28 04:05:34,623 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:05:34,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:05:34,624 INFO L85 PathProgramCache]: Analyzing trace with hash 891852001, now seen corresponding path program 1 times [2021-12-28 04:05:34,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:05:34,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983213413] [2021-12-28 04:05:34,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:05:34,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:05:34,695 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 04:05:34,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2080386418] [2021-12-28 04:05:34,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:05:34,696 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 04:05:34,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 04:05:34,713 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 04:05:34,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-28 04:05:35,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:05:35,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 2929 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 04:05:35,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 04:05:35,808 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-28 04:05:35,809 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 04:05:35,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:05:35,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983213413] [2021-12-28 04:05:35,809 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 04:05:35,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080386418] [2021-12-28 04:05:35,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080386418] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:05:35,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:05:35,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 04:05:35,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641228402] [2021-12-28 04:05:35,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:05:35,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 04:05:35,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:05:35,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 04:05:35,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 04:05:35,812 INFO L87 Difference]: Start difference. First operand 4295 states and 6307 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2021-12-28 04:05:36,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:05:36,024 INFO L93 Difference]: Finished difference Result 8324 states and 12243 transitions. [2021-12-28 04:05:36,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 04:05:36,025 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) Word has length 247 [2021-12-28 04:05:36,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:05:36,052 INFO L225 Difference]: With dead ends: 8324 [2021-12-28 04:05:36,053 INFO L226 Difference]: Without dead ends: 4329 [2021-12-28 04:05:36,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 04:05:36,066 INFO L933 BasicCegarLoop]: 1897 mSDtfsCounter, 3 mSDsluCounter, 5685 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 7582 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 04:05:36,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 7582 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 04:05:36,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4329 states. [2021-12-28 04:05:36,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4329 to 4313. [2021-12-28 04:05:36,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4313 states, 3318 states have (on average 1.4294755877034357) internal successors, (4743), 3359 states have internal predecessors, (4743), 786 states have call successors, (786), 203 states have call predecessors, (786), 208 states have return successors, (804), 772 states have call predecessors, (804), 785 states have call successors, (804) [2021-12-28 04:05:36,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4313 states to 4313 states and 6333 transitions. [2021-12-28 04:05:36,260 INFO L78 Accepts]: Start accepts. Automaton has 4313 states and 6333 transitions. Word has length 247 [2021-12-28 04:05:36,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:05:36,260 INFO L470 AbstractCegarLoop]: Abstraction has 4313 states and 6333 transitions. [2021-12-28 04:05:36,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2021-12-28 04:05:36,261 INFO L276 IsEmpty]: Start isEmpty. Operand 4313 states and 6333 transitions. [2021-12-28 04:05:36,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2021-12-28 04:05:36,271 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:05:36,272 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:05:36,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-28 04:05:36,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-28 04:05:36,488 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:05:36,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:05:36,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1617722553, now seen corresponding path program 1 times [2021-12-28 04:05:36,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:05:36,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513772698] [2021-12-28 04:05:36,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:05:36,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:05:36,539 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 04:05:36,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1270959467] [2021-12-28 04:05:36,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:05:36,540 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 04:05:36,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 04:05:36,541 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 04:05:36,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process