./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 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-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.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 516f7415706b6c5853539632c826b0e29b08def0097a2be3ef08c779c9d5bd22 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-17 00:49:57,292 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-17 00:49:57,298 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-17 00:49:57,344 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-17 00:49:57,345 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-17 00:49:57,346 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-17 00:49:57,347 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-17 00:49:57,348 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-17 00:49:57,350 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-17 00:49:57,350 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-17 00:49:57,351 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-17 00:49:57,352 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-17 00:49:57,352 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-17 00:49:57,353 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-17 00:49:57,355 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-17 00:49:57,356 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-17 00:49:57,356 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-17 00:49:57,357 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-17 00:49:57,359 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-17 00:49:57,360 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-17 00:49:57,362 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-17 00:49:57,363 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-17 00:49:57,364 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-17 00:49:57,364 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-17 00:49:57,367 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-17 00:49:57,367 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-17 00:49:57,367 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-17 00:49:57,368 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-17 00:49:57,369 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-17 00:49:57,370 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-17 00:49:57,370 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-17 00:49:57,371 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-17 00:49:57,372 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-17 00:49:57,372 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-17 00:49:57,373 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-17 00:49:57,374 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-17 00:49:57,374 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-17 00:49:57,375 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-17 00:49:57,375 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-17 00:49:57,376 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-17 00:49:57,377 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-17 00:49:57,378 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-17 00:49:57,397 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-17 00:49:57,397 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-17 00:49:57,397 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-17 00:49:57,398 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-17 00:49:57,398 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-17 00:49:57,399 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-17 00:49:57,399 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-17 00:49:57,400 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-17 00:49:57,400 INFO L138 SettingsManager]: * Use SBE=true [2021-11-17 00:49:57,400 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-17 00:49:57,400 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-17 00:49:57,401 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-17 00:49:57,401 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-17 00:49:57,401 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-17 00:49:57,401 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-17 00:49:57,402 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-17 00:49:57,402 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-17 00:49:57,402 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-17 00:49:57,402 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-17 00:49:57,402 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-17 00:49:57,403 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-17 00:49:57,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-17 00:49:57,403 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-17 00:49:57,403 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-17 00:49:57,403 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-17 00:49:57,404 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-17 00:49:57,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-17 00:49:57,404 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-17 00:49:57,404 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-17 00:49:57,404 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-17 00:49:57,405 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-17 00:49:57,405 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 516f7415706b6c5853539632c826b0e29b08def0097a2be3ef08c779c9d5bd22 [2021-11-17 00:49:57,622 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-17 00:49:57,643 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-17 00:49:57,647 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-17 00:49:57,648 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-17 00:49:57,649 INFO L275 PluginConnector]: CDTParser initialized [2021-11-17 00:49:57,650 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.ko-entry_point.cil.out.i [2021-11-17 00:49:57,708 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d133f1ed/8a9ada2369434c79b61bbb21f5305c21/FLAG843b0edb2 [2021-11-17 00:49:58,469 INFO L306 CDTParser]: Found 1 translation units. [2021-11-17 00:49:58,470 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.ko-entry_point.cil.out.i [2021-11-17 00:49:58,513 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d133f1ed/8a9ada2369434c79b61bbb21f5305c21/FLAG843b0edb2 [2021-11-17 00:49:58,718 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d133f1ed/8a9ada2369434c79b61bbb21f5305c21 [2021-11-17 00:49:58,721 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-17 00:49:58,722 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-17 00:49:58,724 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-17 00:49:58,724 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-17 00:49:58,727 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-17 00:49:58,727 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:49:58" (1/1) ... [2021-11-17 00:49:58,729 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6482ea68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:49:58, skipping insertion in model container [2021-11-17 00:49:58,729 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:49:58" (1/1) ... [2021-11-17 00:49:58,735 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-17 00:49:58,811 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-17 00:49:59,433 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-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.ko-entry_point.cil.out.i[160816,160829] [2021-11-17 00:49:59,864 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-17 00:49:59,883 INFO L203 MainTranslator]: Completed pre-run [2021-11-17 00:50:00,000 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-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.ko-entry_point.cil.out.i[160816,160829] [2021-11-17 00:50:00,132 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-17 00:50:00,174 INFO L208 MainTranslator]: Completed translation [2021-11-17 00:50:00,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:50:00 WrapperNode [2021-11-17 00:50:00,176 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-17 00:50:00,178 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-17 00:50:00,178 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-17 00:50:00,178 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-17 00:50:00,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:50:00" (1/1) ... [2021-11-17 00:50:00,244 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:50:00" (1/1) ... [2021-11-17 00:50:00,335 INFO L137 Inliner]: procedures = 140, calls = 1066, calls flagged for inlining = 55, calls inlined = 52, statements flattened = 1902 [2021-11-17 00:50:00,336 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-17 00:50:00,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-17 00:50:00,337 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-17 00:50:00,337 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-17 00:50:00,344 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:50:00" (1/1) ... [2021-11-17 00:50:00,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:50:00" (1/1) ... [2021-11-17 00:50:00,367 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:50:00" (1/1) ... [2021-11-17 00:50:00,371 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:50:00" (1/1) ... [2021-11-17 00:50:00,445 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:50:00" (1/1) ... [2021-11-17 00:50:00,480 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:50:00" (1/1) ... [2021-11-17 00:50:00,502 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:50:00" (1/1) ... [2021-11-17 00:50:00,527 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-17 00:50:00,528 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-17 00:50:00,528 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-17 00:50:00,528 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-17 00:50:00,529 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:50:00" (1/1) ... [2021-11-17 00:50:00,547 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-17 00:50:00,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:50:00,573 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) [2021-11-17 00:50:00,595 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 [2021-11-17 00:50:00,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-17 00:50:00,611 INFO L130 BoogieDeclarations]: Found specification of procedure devm_request_threaded_irq [2021-11-17 00:50:00,611 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_request_threaded_irq [2021-11-17 00:50:00,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-17 00:50:00,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-17 00:50:00,611 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-17 00:50:00,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-17 00:50:00,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-17 00:50:00,612 INFO L130 BoogieDeclarations]: Found specification of procedure write_long_reg [2021-11-17 00:50:00,612 INFO L138 BoogieDeclarations]: Found implementation of procedure write_long_reg [2021-11-17 00:50:00,612 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_1 [2021-11-17 00:50:00,612 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_1 [2021-11-17 00:50:00,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-17 00:50:00,613 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-17 00:50:00,613 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2021-11-17 00:50:00,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2021-11-17 00:50:00,613 INFO L130 BoogieDeclarations]: Found specification of procedure spi_sync [2021-11-17 00:50:00,613 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_sync [2021-11-17 00:50:00,613 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-17 00:50:00,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-17 00:50:00,614 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2021-11-17 00:50:00,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2021-11-17 00:50:00,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-17 00:50:00,615 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-17 00:50:00,615 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-17 00:50:00,615 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-17 00:50:00,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-17 00:50:00,616 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-17 00:50:00,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-17 00:50:00,616 INFO L130 BoogieDeclarations]: Found specification of procedure mrf24j40_set_channel [2021-11-17 00:50:00,616 INFO L138 BoogieDeclarations]: Found implementation of procedure mrf24j40_set_channel [2021-11-17 00:50:00,616 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_1 [2021-11-17 00:50:00,617 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_1 [2021-11-17 00:50:00,617 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-17 00:50:00,617 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-17 00:50:00,617 INFO L130 BoogieDeclarations]: Found specification of procedure write_short_reg [2021-11-17 00:50:00,617 INFO L138 BoogieDeclarations]: Found implementation of procedure write_short_reg [2021-11-17 00:50:00,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-17 00:50:00,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-17 00:50:00,618 INFO L130 BoogieDeclarations]: Found specification of procedure ieee802154_unregister_device [2021-11-17 00:50:00,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee802154_unregister_device [2021-11-17 00:50:00,618 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-17 00:50:00,618 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-17 00:50:00,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-17 00:50:00,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-17 00:50:00,619 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-11-17 00:50:00,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-11-17 00:50:00,619 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_init [2021-11-17 00:50:00,620 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_init [2021-11-17 00:50:00,620 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_2 [2021-11-17 00:50:00,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_2 [2021-11-17 00:50:00,620 INFO L130 BoogieDeclarations]: Found specification of procedure read_short_reg [2021-11-17 00:50:00,620 INFO L138 BoogieDeclarations]: Found implementation of procedure read_short_reg [2021-11-17 00:50:00,620 INFO L130 BoogieDeclarations]: Found specification of procedure mrf24j40_filter [2021-11-17 00:50:00,621 INFO L138 BoogieDeclarations]: Found implementation of procedure mrf24j40_filter [2021-11-17 00:50:00,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-17 00:50:00,622 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2021-11-17 00:50:00,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2021-11-17 00:50:00,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-17 00:50:00,623 INFO L130 BoogieDeclarations]: Found specification of procedure devm_kzalloc [2021-11-17 00:50:00,623 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_kzalloc [2021-11-17 00:50:00,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-17 00:50:00,624 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-17 00:50:00,624 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-17 00:50:00,624 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_add_tail [2021-11-17 00:50:00,624 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_add_tail [2021-11-17 00:50:00,624 INFO L130 BoogieDeclarations]: Found specification of procedure mrf24j40_tx [2021-11-17 00:50:00,624 INFO L138 BoogieDeclarations]: Found implementation of procedure mrf24j40_tx [2021-11-17 00:50:00,625 INFO L130 BoogieDeclarations]: Found specification of procedure mrf24j40_isr [2021-11-17 00:50:00,625 INFO L138 BoogieDeclarations]: Found implementation of procedure mrf24j40_isr [2021-11-17 00:50:00,625 INFO L130 BoogieDeclarations]: Found specification of procedure mrf24j40_ed [2021-11-17 00:50:00,625 INFO L138 BoogieDeclarations]: Found implementation of procedure mrf24j40_ed [2021-11-17 00:50:00,625 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-17 00:50:00,626 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-17 00:50:00,626 INFO L130 BoogieDeclarations]: Found specification of procedure ieee802154_free_device [2021-11-17 00:50:00,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee802154_free_device [2021-11-17 00:50:00,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-17 00:50:00,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-17 00:50:00,626 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-17 00:50:00,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-17 00:50:00,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-17 00:50:00,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-17 00:50:01,086 INFO L236 CfgBuilder]: Building ICFG [2021-11-17 00:50:01,088 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-17 00:50:10,211 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-17 00:50:19,965 INFO L277 CfgBuilder]: Performing block encoding [2021-11-17 00:50:19,979 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-17 00:50:19,979 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-17 00:50:19,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:50:19 BoogieIcfgContainer [2021-11-17 00:50:19,982 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-17 00:50:19,984 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-17 00:50:19,984 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-17 00:50:19,987 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-17 00:50:19,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 12:49:58" (1/3) ... [2021-11-17 00:50:19,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@479e60b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:50:19, skipping insertion in model container [2021-11-17 00:50:19,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:50:00" (2/3) ... [2021-11-17 00:50:19,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@479e60b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:50:19, skipping insertion in model container [2021-11-17 00:50:19,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:50:19" (3/3) ... [2021-11-17 00:50:19,990 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.ko-entry_point.cil.out.i [2021-11-17 00:50:19,994 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-17 00:50:19,994 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-17 00:50:20,037 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-17 00:50:20,043 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 [2021-11-17 00:50:20,043 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-17 00:50:20,069 INFO L276 IsEmpty]: Start isEmpty. Operand has 621 states, 439 states have (on average 1.3690205011389522) internal successors, (601), 453 states have internal predecessors, (601), 148 states have call successors, (148), 33 states have call predecessors, (148), 32 states have return successors, (140), 140 states have call predecessors, (140), 140 states have call successors, (140) [2021-11-17 00:50:20,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-17 00:50:20,079 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:50:20,080 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:50:20,080 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:50:20,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:50:20,086 INFO L85 PathProgramCache]: Analyzing trace with hash -829070918, now seen corresponding path program 1 times [2021-11-17 00:50:20,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:50:20,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811552932] [2021-11-17 00:50:20,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:50:20,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:50:20,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:20,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:50:20,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:20,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:50:20,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:20,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:50:20,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:20,700 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-17 00:50:20,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:50:20,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811552932] [2021-11-17 00:50:20,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811552932] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:50:20,701 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:50:20,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-17 00:50:20,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524427] [2021-11-17 00:50:20,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:50:20,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-17 00:50:20,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:50:20,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-17 00:50:20,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-17 00:50:20,755 INFO L87 Difference]: Start difference. First operand has 621 states, 439 states have (on average 1.3690205011389522) internal successors, (601), 453 states have internal predecessors, (601), 148 states have call successors, (148), 33 states have call predecessors, (148), 32 states have return successors, (140), 140 states have call predecessors, (140), 140 states have call successors, (140) Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-17 00:50:22,785 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:50:24,808 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:50:27,269 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:50:29,573 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:50:31,644 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:50:34,881 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:50:37,299 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:50:39,534 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:50:41,663 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:50:42,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:50:42,239 INFO L93 Difference]: Finished difference Result 1873 states and 2867 transitions. [2021-11-17 00:50:42,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-17 00:50:42,242 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 37 [2021-11-17 00:50:42,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:50:42,272 INFO L225 Difference]: With dead ends: 1873 [2021-11-17 00:50:42,272 INFO L226 Difference]: Without dead ends: 1233 [2021-11-17 00:50:42,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-17 00:50:42,289 INFO L933 BasicCegarLoop]: 1006 mSDtfsCounter, 963 mSDsluCounter, 1262 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 302 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1059 SdHoareTripleChecker+Valid, 2268 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.2s IncrementalHoareTripleChecker+Time [2021-11-17 00:50:42,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1059 Valid, 2268 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 417 Invalid, 9 Unknown, 0 Unchecked, 21.2s Time] [2021-11-17 00:50:42,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1233 states. [2021-11-17 00:50:42,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1233 to 1146. [2021-11-17 00:50:42,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1146 states, 827 states have (on average 1.336154776299879) internal successors, (1105), 835 states have internal predecessors, (1105), 259 states have call successors, (259), 60 states have call predecessors, (259), 59 states have return successors, (258), 258 states have call predecessors, (258), 258 states have call successors, (258) [2021-11-17 00:50:42,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 1622 transitions. [2021-11-17 00:50:42,463 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 1622 transitions. Word has length 37 [2021-11-17 00:50:42,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:50:42,463 INFO L470 AbstractCegarLoop]: Abstraction has 1146 states and 1622 transitions. [2021-11-17 00:50:42,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-17 00:50:42,464 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 1622 transitions. [2021-11-17 00:50:42,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-17 00:50:42,471 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:50:42,471 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:50:42,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-17 00:50:42,472 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:50:42,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:50:42,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1782236089, now seen corresponding path program 1 times [2021-11-17 00:50:42,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:50:42,474 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023031914] [2021-11-17 00:50:42,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:50:42,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:50:42,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:42,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:50:42,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:42,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:50:42,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:42,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:50:42,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:42,770 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-17 00:50:42,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:50:42,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023031914] [2021-11-17 00:50:42,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023031914] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:50:42,771 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:50:42,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 00:50:42,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295383692] [2021-11-17 00:50:42,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:50:42,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 00:50:42,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:50:42,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 00:50:42,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-17 00:50:42,785 INFO L87 Difference]: Start difference. First operand 1146 states and 1622 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-17 00:50:44,803 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:50:47,286 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:50:49,714 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:50:51,809 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:50:55,297 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:50:57,507 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:50:59,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:50:59,373 INFO L93 Difference]: Finished difference Result 3541 states and 5099 transitions. [2021-11-17 00:50:59,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-17 00:50:59,373 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2021-11-17 00:50:59,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:50:59,392 INFO L225 Difference]: With dead ends: 3541 [2021-11-17 00:50:59,392 INFO L226 Difference]: Without dead ends: 2398 [2021-11-17 00:50:59,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-17 00:50:59,402 INFO L933 BasicCegarLoop]: 1022 mSDtfsCounter, 947 mSDsluCounter, 3115 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 288 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1038 SdHoareTripleChecker+Valid, 4137 SdHoareTripleChecker+Invalid, 988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.3s IncrementalHoareTripleChecker+Time [2021-11-17 00:50:59,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1038 Valid, 4137 Invalid, 988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [288 Valid, 694 Invalid, 6 Unknown, 0 Unchecked, 16.3s Time] [2021-11-17 00:50:59,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2398 states. [2021-11-17 00:50:59,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2398 to 2259. [2021-11-17 00:50:59,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2259 states, 1636 states have (on average 1.3380195599022005) internal successors, (2189), 1658 states have internal predecessors, (2189), 499 states have call successors, (499), 116 states have call predecessors, (499), 123 states have return successors, (546), 500 states have call predecessors, (546), 498 states have call successors, (546) [2021-11-17 00:50:59,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2259 states to 2259 states and 3234 transitions. [2021-11-17 00:50:59,502 INFO L78 Accepts]: Start accepts. Automaton has 2259 states and 3234 transitions. Word has length 39 [2021-11-17 00:50:59,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:50:59,503 INFO L470 AbstractCegarLoop]: Abstraction has 2259 states and 3234 transitions. [2021-11-17 00:50:59,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-17 00:50:59,504 INFO L276 IsEmpty]: Start isEmpty. Operand 2259 states and 3234 transitions. [2021-11-17 00:50:59,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-11-17 00:50:59,523 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:50:59,523 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-17 00:50:59,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-17 00:50:59,524 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:50:59,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:50:59,525 INFO L85 PathProgramCache]: Analyzing trace with hash -2071322685, now seen corresponding path program 1 times [2021-11-17 00:50:59,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:50:59,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814282097] [2021-11-17 00:50:59,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:50:59,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:50:59,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:59,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:50:59,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:59,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:50:59,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:59,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:50:59,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:59,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:51:00,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:00,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-17 00:51:00,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:00,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:51:00,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:00,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:51:00,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:00,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:51:00,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:00,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:51:00,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:00,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 00:51:00,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:00,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:51:00,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:00,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-17 00:51:00,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:00,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:51:00,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:00,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:51:00,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:00,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:51:00,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:00,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 00:51:00,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:00,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:51:00,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:00,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-17 00:51:00,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:00,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:51:00,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:00,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:51:00,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:00,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:51:00,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:00,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 00:51:00,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:00,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:51:00,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:00,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-11-17 00:51:00,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:00,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:51:00,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:00,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-17 00:51:00,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:01,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:51:01,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:01,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:51:01,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:01,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:51:01,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:01,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 00:51:01,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:01,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:51:01,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:01,083 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 4 proven. 35 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2021-11-17 00:51:01,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:51:01,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814282097] [2021-11-17 00:51:01,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814282097] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:51:01,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168105602] [2021-11-17 00:51:01,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:51:01,084 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:51:01,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:51:01,086 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) [2021-11-17 00:51:01,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-17 00:51:01,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:01,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 2438 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-17 00:51:01,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:51:03,666 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-11-17 00:51:03,666 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 00:51:03,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168105602] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:51:03,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 00:51:03,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 14 [2021-11-17 00:51:03,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305986646] [2021-11-17 00:51:03,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:51:03,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-17 00:51:03,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:51:03,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-17 00:51:03,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-11-17 00:51:03,669 INFO L87 Difference]: Start difference. First operand 2259 states and 3234 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-17 00:51:05,685 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:51:07,697 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:51:09,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:51:09,990 INFO L93 Difference]: Finished difference Result 4528 states and 6497 transitions. [2021-11-17 00:51:09,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-17 00:51:09,991 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 232 [2021-11-17 00:51:09,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:51:10,010 INFO L225 Difference]: With dead ends: 4528 [2021-11-17 00:51:10,010 INFO L226 Difference]: Without dead ends: 2279 [2021-11-17 00:51:10,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-11-17 00:51:10,024 INFO L933 BasicCegarLoop]: 846 mSDtfsCounter, 758 mSDsluCounter, 1125 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 762 SdHoareTripleChecker+Valid, 1971 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2021-11-17 00:51:10,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [762 Valid, 1971 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 591 Invalid, 2 Unknown, 0 Unchecked, 6.1s Time] [2021-11-17 00:51:10,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2279 states. [2021-11-17 00:51:10,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2279 to 2263. [2021-11-17 00:51:10,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2263 states, 1638 states have (on average 1.3376068376068375) internal successors, (2191), 1662 states have internal predecessors, (2191), 499 states have call successors, (499), 116 states have call predecessors, (499), 125 states have return successors, (548), 500 states have call predecessors, (548), 498 states have call successors, (548) [2021-11-17 00:51:10,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2263 states to 2263 states and 3238 transitions. [2021-11-17 00:51:10,113 INFO L78 Accepts]: Start accepts. Automaton has 2263 states and 3238 transitions. Word has length 232 [2021-11-17 00:51:10,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:51:10,115 INFO L470 AbstractCegarLoop]: Abstraction has 2263 states and 3238 transitions. [2021-11-17 00:51:10,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-17 00:51:10,116 INFO L276 IsEmpty]: Start isEmpty. Operand 2263 states and 3238 transitions. [2021-11-17 00:51:10,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-11-17 00:51:10,124 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:51:10,124 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-17 00:51:10,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-17 00:51:10,349 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 [2021-11-17 00:51:10,349 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:51:10,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:51:10,350 INFO L85 PathProgramCache]: Analyzing trace with hash -2131116005, now seen corresponding path program 1 times [2021-11-17 00:51:10,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:51:10,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124402419] [2021-11-17 00:51:10,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:51:10,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:51:10,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:10,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:51:10,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:10,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:51:10,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:10,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:51:10,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:10,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-17 00:51:10,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:10,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-17 00:51:10,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:11,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:51:11,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:11,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:51:11,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:11,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:51:11,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:11,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:51:11,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:11,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 00:51:11,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:11,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:51:11,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:11,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-17 00:51:11,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:11,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:51:11,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:11,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:51:11,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:11,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:51:11,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:11,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 00:51:11,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:11,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:51:11,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:11,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-17 00:51:11,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:11,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:51:11,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:11,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:51:11,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:11,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:51:11,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:11,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 00:51:11,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:11,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:51:11,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:11,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-11-17 00:51:11,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:11,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:51:11,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:11,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-17 00:51:11,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:11,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:51:11,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:11,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:51:11,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:11,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:51:11,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:11,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 00:51:11,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:11,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:51:11,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:11,613 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 4 proven. 35 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2021-11-17 00:51:11,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:51:11,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124402419] [2021-11-17 00:51:11,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124402419] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:51:11,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121877738] [2021-11-17 00:51:11,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:51:11,614 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:51:11,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:51:11,616 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) [2021-11-17 00:51:11,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-17 00:51:12,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:12,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 2440 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-17 00:51:12,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:51:14,006 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-11-17 00:51:14,007 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 00:51:14,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121877738] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:51:14,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 00:51:14,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 14 [2021-11-17 00:51:14,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511561567] [2021-11-17 00:51:14,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:51:14,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-17 00:51:14,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:51:14,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-17 00:51:14,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-11-17 00:51:14,009 INFO L87 Difference]: Start difference. First operand 2263 states and 3238 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-17 00:51:16,029 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:51:17,823 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:51:19,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:51:19,839 INFO L93 Difference]: Finished difference Result 4532 states and 6495 transitions. [2021-11-17 00:51:19,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-17 00:51:19,840 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 233 [2021-11-17 00:51:19,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:51:19,855 INFO L225 Difference]: With dead ends: 4532 [2021-11-17 00:51:19,855 INFO L226 Difference]: Without dead ends: 2279 [2021-11-17 00:51:19,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-11-17 00:51:19,866 INFO L933 BasicCegarLoop]: 846 mSDtfsCounter, 757 mSDsluCounter, 1125 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 1971 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-11-17 00:51:19,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [761 Valid, 1971 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 589 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2021-11-17 00:51:19,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2279 states. [2021-11-17 00:51:19,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2279 to 2263. [2021-11-17 00:51:19,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2263 states, 1638 states have (on average 1.3376068376068375) internal successors, (2191), 1662 states have internal predecessors, (2191), 499 states have call successors, (499), 116 states have call predecessors, (499), 125 states have return successors, (542), 500 states have call predecessors, (542), 498 states have call successors, (542) [2021-11-17 00:51:19,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2263 states to 2263 states and 3232 transitions. [2021-11-17 00:51:19,952 INFO L78 Accepts]: Start accepts. Automaton has 2263 states and 3232 transitions. Word has length 233 [2021-11-17 00:51:19,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:51:19,954 INFO L470 AbstractCegarLoop]: Abstraction has 2263 states and 3232 transitions. [2021-11-17 00:51:19,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-17 00:51:19,954 INFO L276 IsEmpty]: Start isEmpty. Operand 2263 states and 3232 transitions. [2021-11-17 00:51:19,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-11-17 00:51:19,962 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:51:19,963 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:51:19,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-17 00:51:20,195 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 [2021-11-17 00:51:20,196 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:51:20,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:51:20,196 INFO L85 PathProgramCache]: Analyzing trace with hash 683377002, now seen corresponding path program 1 times [2021-11-17 00:51:20,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:51:20,196 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024350684] [2021-11-17 00:51:20,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:51:20,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:51:20,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:20,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:51:20,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:20,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:51:20,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:20,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:51:20,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:20,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-17 00:51:20,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:20,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-17 00:51:20,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:20,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:51:20,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:21,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:51:21,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:21,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:51:21,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:21,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:51:21,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:21,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 00:51:21,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:21,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:51:21,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:21,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-17 00:51:21,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:21,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:51:21,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:21,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:51:21,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:21,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:51:21,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:21,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 00:51:21,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:21,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:51:21,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:21,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-17 00:51:21,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:21,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:51:21,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:21,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:51:21,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:21,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:51:21,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:21,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 00:51:21,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:21,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:51:21,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:21,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-11-17 00:51:21,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:21,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:51:21,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:21,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-17 00:51:21,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:21,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:51:21,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:21,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:51:21,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:21,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:51:21,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:21,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 00:51:21,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:21,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:51:21,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:21,391 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 3 proven. 35 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2021-11-17 00:51:21,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:51:21,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024350684] [2021-11-17 00:51:21,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024350684] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:51:21,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390199196] [2021-11-17 00:51:21,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:51:21,392 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:51:21,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:51:21,394 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) [2021-11-17 00:51:21,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-17 00:51:21,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:21,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 2434 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-17 00:51:22,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:51:23,850 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-11-17 00:51:23,850 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 00:51:23,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390199196] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:51:23,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 00:51:23,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 14 [2021-11-17 00:51:23,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847090693] [2021-11-17 00:51:23,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:51:23,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-17 00:51:23,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:51:23,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-17 00:51:23,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-11-17 00:51:23,852 INFO L87 Difference]: Start difference. First operand 2263 states and 3232 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-17 00:51:25,881 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:51:27,894 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:51:29,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:51:29,886 INFO L93 Difference]: Finished difference Result 6789 states and 9716 transitions. [2021-11-17 00:51:29,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-17 00:51:29,887 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 230 [2021-11-17 00:51:29,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:51:29,916 INFO L225 Difference]: With dead ends: 6789 [2021-11-17 00:51:29,917 INFO L226 Difference]: Without dead ends: 4536 [2021-11-17 00:51:29,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-11-17 00:51:29,930 INFO L933 BasicCegarLoop]: 980 mSDtfsCounter, 759 mSDsluCounter, 1963 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 2943 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-17 00:51:29,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [763 Valid, 2943 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 597 Invalid, 2 Unknown, 0 Unchecked, 5.8s Time] [2021-11-17 00:51:29,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4536 states. [2021-11-17 00:51:30,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4536 to 4510. [2021-11-17 00:51:30,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4510 states, 3263 states have (on average 1.3386454183266931) internal successors, (4368), 3313 states have internal predecessors, (4368), 994 states have call successors, (994), 231 states have call predecessors, (994), 252 states have return successors, (1087), 997 states have call predecessors, (1087), 993 states have call successors, (1087) [2021-11-17 00:51:30,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4510 states to 4510 states and 6449 transitions. [2021-11-17 00:51:30,155 INFO L78 Accepts]: Start accepts. Automaton has 4510 states and 6449 transitions. Word has length 230 [2021-11-17 00:51:30,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:51:30,156 INFO L470 AbstractCegarLoop]: Abstraction has 4510 states and 6449 transitions. [2021-11-17 00:51:30,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-17 00:51:30,156 INFO L276 IsEmpty]: Start isEmpty. Operand 4510 states and 6449 transitions. [2021-11-17 00:51:30,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-11-17 00:51:30,165 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:51:30,165 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:51:30,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-17 00:51:30,379 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 [2021-11-17 00:51:30,380 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:51:30,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:51:30,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1193096587, now seen corresponding path program 1 times [2021-11-17 00:51:30,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:51:30,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919734747] [2021-11-17 00:51:30,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:51:30,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:51:30,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:30,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:51:30,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:30,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:51:30,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:30,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:51:30,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:30,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-17 00:51:30,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:30,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-17 00:51:30,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:31,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:51:31,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:31,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:51:31,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:31,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:51:31,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:31,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:51:31,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:31,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 00:51:31,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:31,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:51:31,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:31,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-17 00:51:31,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:31,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:51:31,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:31,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:51:31,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:31,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:51:31,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:31,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 00:51:31,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:31,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:51:31,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:31,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-17 00:51:31,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:31,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:51:31,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:31,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:51:31,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:31,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:51:31,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:31,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 00:51:31,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:31,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:51:31,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:31,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-11-17 00:51:31,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:31,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:51:31,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:31,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-17 00:51:31,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:31,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:51:31,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:31,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:51:31,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:31,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:51:31,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:31,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 00:51:31,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:31,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:51:31,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:31,490 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 3 proven. 35 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2021-11-17 00:51:31,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:51:31,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919734747] [2021-11-17 00:51:31,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919734747] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:51:31,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075694082] [2021-11-17 00:51:31,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:51:31,491 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:51:31,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:51:31,492 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) [2021-11-17 00:51:31,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-17 00:51:32,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:32,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 2432 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-17 00:51:32,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:51:33,858 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-11-17 00:51:33,859 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 00:51:33,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075694082] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:51:33,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 00:51:33,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 14 [2021-11-17 00:51:33,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798156777] [2021-11-17 00:51:33,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:51:33,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-17 00:51:33,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:51:33,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-17 00:51:33,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-11-17 00:51:33,862 INFO L87 Difference]: Start difference. First operand 4510 states and 6449 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-17 00:51:35,593 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:51:37,610 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:51:39,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:51:39,860 INFO L93 Difference]: Finished difference Result 13546 states and 19403 transitions. [2021-11-17 00:51:39,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-17 00:51:39,860 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 229 [2021-11-17 00:51:39,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:51:39,939 INFO L225 Difference]: With dead ends: 13546 [2021-11-17 00:51:39,939 INFO L226 Difference]: Without dead ends: 9046 [2021-11-17 00:51:39,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-11-17 00:51:39,959 INFO L933 BasicCegarLoop]: 980 mSDtfsCounter, 760 mSDsluCounter, 1963 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 2943 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-11-17 00:51:39,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [764 Valid, 2943 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 598 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2021-11-17 00:51:39,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9046 states. [2021-11-17 00:51:40,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9046 to 9004. [2021-11-17 00:51:40,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9004 states, 6513 states have (on average 1.3391678182097344) internal successors, (8722), 6615 states have internal predecessors, (8722), 1984 states have call successors, (1984), 461 states have call predecessors, (1984), 506 states have return successors, (2175), 1991 states have call predecessors, (2175), 1983 states have call successors, (2175) [2021-11-17 00:51:40,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9004 states to 9004 states and 12881 transitions. [2021-11-17 00:51:40,401 INFO L78 Accepts]: Start accepts. Automaton has 9004 states and 12881 transitions. Word has length 229 [2021-11-17 00:51:40,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:51:40,402 INFO L470 AbstractCegarLoop]: Abstraction has 9004 states and 12881 transitions. [2021-11-17 00:51:40,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-17 00:51:40,403 INFO L276 IsEmpty]: Start isEmpty. Operand 9004 states and 12881 transitions. [2021-11-17 00:51:40,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-11-17 00:51:40,411 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:51:40,411 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-17 00:51:40,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-17 00:51:40,635 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 [2021-11-17 00:51:40,635 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:51:40,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:51:40,636 INFO L85 PathProgramCache]: Analyzing trace with hash -149570922, now seen corresponding path program 1 times [2021-11-17 00:51:40,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:51:40,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952140583] [2021-11-17 00:51:40,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:51:40,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:51:40,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:40,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:51:40,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:40,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:51:40,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:40,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:51:40,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:40,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-17 00:51:40,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:41,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-17 00:51:41,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:41,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:51:41,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:41,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:51:41,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:41,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:51:41,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:41,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:51:41,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:41,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 00:51:41,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:41,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:51:41,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:41,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-17 00:51:41,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:41,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:51:41,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:41,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:51:41,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:41,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:51:41,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:41,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 00:51:41,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:41,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:51:41,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:41,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-17 00:51:41,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:41,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:51:41,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:41,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:51:41,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:41,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:51:41,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:41,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 00:51:41,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:41,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:51:41,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:41,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-11-17 00:51:41,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:41,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:51:41,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:41,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-17 00:51:41,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:41,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:51:41,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:41,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:51:41,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:41,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:51:41,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:41,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 00:51:41,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:41,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:51:41,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:41,763 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 4 proven. 35 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2021-11-17 00:51:41,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:51:41,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952140583] [2021-11-17 00:51:41,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952140583] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:51:41,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189583912] [2021-11-17 00:51:41,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:51:41,764 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:51:41,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:51:41,766 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) [2021-11-17 00:51:41,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-17 00:51:42,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:42,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 2434 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-17 00:51:42,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:51:43,853 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-11-17 00:51:43,853 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 00:51:43,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189583912] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:51:43,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 00:51:43,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 14 [2021-11-17 00:51:43,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039942083] [2021-11-17 00:51:43,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:51:43,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-17 00:51:43,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:51:43,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-17 00:51:43,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-11-17 00:51:43,855 INFO L87 Difference]: Start difference. First operand 9004 states and 12881 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-17 00:51:45,863 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:51:47,878 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:51:50,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:51:50,048 INFO L93 Difference]: Finished difference Result 27056 states and 38745 transitions. [2021-11-17 00:51:50,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-17 00:51:50,049 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 230 [2021-11-17 00:51:50,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:51:50,147 INFO L225 Difference]: With dead ends: 27056 [2021-11-17 00:51:50,147 INFO L226 Difference]: Without dead ends: 18062 [2021-11-17 00:51:50,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-11-17 00:51:50,198 INFO L933 BasicCegarLoop]: 989 mSDtfsCounter, 756 mSDsluCounter, 2101 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 3090 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-17 00:51:50,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [760 Valid, 3090 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 594 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2021-11-17 00:51:50,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18062 states. [2021-11-17 00:51:50,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18062 to 17924. [2021-11-17 00:51:50,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17924 states, 12947 states have (on average 1.3411601143121958) internal successors, (17364), 13215 states have internal predecessors, (17364), 3964 states have call successors, (3964), 921 states have call predecessors, (3964), 1012 states have return successors, (4323), 3915 states have call predecessors, (4323), 3963 states have call successors, (4323) [2021-11-17 00:51:50,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17924 states to 17924 states and 25651 transitions. [2021-11-17 00:51:50,953 INFO L78 Accepts]: Start accepts. Automaton has 17924 states and 25651 transitions. Word has length 230 [2021-11-17 00:51:50,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:51:51,015 INFO L470 AbstractCegarLoop]: Abstraction has 17924 states and 25651 transitions. [2021-11-17 00:51:51,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-17 00:51:51,019 INFO L276 IsEmpty]: Start isEmpty. Operand 17924 states and 25651 transitions. [2021-11-17 00:51:51,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-11-17 00:51:51,036 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:51:51,036 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-17 00:51:51,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-17 00:51:51,239 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 [2021-11-17 00:51:51,239 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:51:51,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:51:51,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1874664626, now seen corresponding path program 1 times [2021-11-17 00:51:51,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:51:51,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228917418] [2021-11-17 00:51:51,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:51:51,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:51:51,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:51,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:51:51,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:51,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:51:51,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:51,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:51:51,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:51,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-17 00:51:51,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:51,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-17 00:51:51,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:51,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:51:51,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:51,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:51:51,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:52,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:51:52,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:52,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:51:52,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:52,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 00:51:52,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:52,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:51:52,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:52,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-17 00:51:52,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:52,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:51:52,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:52,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:51:52,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:52,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:51:52,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:52,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 00:51:52,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:52,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:51:52,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:52,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-17 00:51:52,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:52,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:51:52,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:52,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:51:52,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:52,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:51:52,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:52,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 00:51:52,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:52,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:51:52,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:52,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-11-17 00:51:52,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:52,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:51:52,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:52,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-17 00:51:52,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:52,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:51:52,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:52,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:51:52,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:52,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:51:52,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:52,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 00:51:52,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:52,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:51:52,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:52,343 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 4 proven. 35 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2021-11-17 00:51:52,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:51:52,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228917418] [2021-11-17 00:51:52,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228917418] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:51:52,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88142399] [2021-11-17 00:51:52,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:51:52,345 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:51:52,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:51:52,346 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) [2021-11-17 00:51:52,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-17 00:51:52,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:52,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 2436 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-17 00:51:52,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:51:54,451 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-11-17 00:51:54,452 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 00:51:54,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88142399] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:51:54,452 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 00:51:54,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 14 [2021-11-17 00:51:54,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566532564] [2021-11-17 00:51:54,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:51:54,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-17 00:51:54,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:51:54,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-17 00:51:54,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-11-17 00:51:54,454 INFO L87 Difference]: Start difference. First operand 17924 states and 25651 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-17 00:51:56,468 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:51:58,473 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:52:00,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:52:00,490 INFO L93 Difference]: Finished difference Result 27046 states and 38775 transitions. [2021-11-17 00:52:00,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-17 00:52:00,491 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 231 [2021-11-17 00:52:00,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:52:00,582 INFO L225 Difference]: With dead ends: 27046 [2021-11-17 00:52:00,582 INFO L226 Difference]: Without dead ends: 17988 [2021-11-17 00:52:00,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-11-17 00:52:00,632 INFO L933 BasicCegarLoop]: 846 mSDtfsCounter, 744 mSDsluCounter, 1125 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 1971 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-11-17 00:52:00,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [748 Valid, 1971 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 585 Invalid, 2 Unknown, 0 Unchecked, 5.6s Time] [2021-11-17 00:52:00,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17988 states. [2021-11-17 00:52:01,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17988 to 17860. [2021-11-17 00:52:01,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17860 states, 12915 states have (on average 1.340766550522648) internal successors, (17316), 13167 states have internal predecessors, (17316), 3948 states have call successors, (3948), 921 states have call predecessors, (3948), 996 states have return successors, (4251), 3899 states have call predecessors, (4251), 3947 states have call successors, (4251) [2021-11-17 00:52:01,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17860 states to 17860 states and 25515 transitions. [2021-11-17 00:52:01,594 INFO L78 Accepts]: Start accepts. Automaton has 17860 states and 25515 transitions. Word has length 231 [2021-11-17 00:52:01,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:52:01,594 INFO L470 AbstractCegarLoop]: Abstraction has 17860 states and 25515 transitions. [2021-11-17 00:52:01,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-17 00:52:01,595 INFO L276 IsEmpty]: Start isEmpty. Operand 17860 states and 25515 transitions. [2021-11-17 00:52:01,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-11-17 00:52:01,611 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:52:01,612 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:52:01,643 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-17 00:52:01,838 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 [2021-11-17 00:52:01,838 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:52:01,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:52:01,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1958457725, now seen corresponding path program 1 times [2021-11-17 00:52:01,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:52:01,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172001851] [2021-11-17 00:52:01,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:52:01,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:52:01,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:02,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:52:02,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:02,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:52:02,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:02,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:52:02,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:02,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 00:52:02,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:02,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-17 00:52:02,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:02,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:52:02,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:02,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:52:02,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:02,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:52:02,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:02,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:52:02,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:02,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 00:52:02,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:02,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:52:02,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:02,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-17 00:52:02,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:02,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:52:02,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:02,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:52:02,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:02,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:52:02,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:02,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 00:52:02,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:02,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:52:02,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:02,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-17 00:52:02,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:02,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:52:02,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:02,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:52:02,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:02,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:52:02,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:02,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 00:52:02,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:02,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:52:02,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:02,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-11-17 00:52:02,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:02,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:52:02,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:02,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-17 00:52:02,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:02,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:52:02,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:02,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:52:02,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:02,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:52:02,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:02,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 00:52:02,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:02,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:52:02,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:02,907 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 3 proven. 35 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2021-11-17 00:52:02,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:52:02,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172001851] [2021-11-17 00:52:02,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172001851] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:52:02,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172821448] [2021-11-17 00:52:02,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:52:02,908 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:52:02,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:52:02,909 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) [2021-11-17 00:52:02,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-17 00:52:03,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:03,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 2430 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-17 00:52:03,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:52:05,147 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-11-17 00:52:05,148 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 00:52:05,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172821448] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:52:05,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 00:52:05,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 14 [2021-11-17 00:52:05,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204078226] [2021-11-17 00:52:05,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:52:05,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-17 00:52:05,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:52:05,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-17 00:52:05,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-11-17 00:52:05,150 INFO L87 Difference]: Start difference. First operand 17860 states and 25515 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-17 00:52:07,164 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:52:09,171 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:52:11,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:52:11,706 INFO L93 Difference]: Finished difference Result 53696 states and 76827 transitions. [2021-11-17 00:52:11,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-17 00:52:11,707 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 228 [2021-11-17 00:52:11,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:52:11,877 INFO L225 Difference]: With dead ends: 53696 [2021-11-17 00:52:11,877 INFO L226 Difference]: Without dead ends: 35846 [2021-11-17 00:52:11,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-11-17 00:52:11,941 INFO L933 BasicCegarLoop]: 980 mSDtfsCounter, 746 mSDsluCounter, 2245 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 3225 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-17 00:52:11,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [750 Valid, 3225 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 608 Invalid, 2 Unknown, 0 Unchecked, 5.8s Time] [2021-11-17 00:52:11,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35846 states. [2021-11-17 00:52:13,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35846 to 35708. [2021-11-17 00:52:13,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35708 states, 25819 states have (on average 1.3408730005035052) internal successors, (34620), 26327 states have internal predecessors, (34620), 7892 states have call successors, (7892), 1841 states have call predecessors, (7892), 1996 states have return successors, (8499), 7795 states have call predecessors, (8499), 7891 states have call successors, (8499) [2021-11-17 00:52:13,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35708 states to 35708 states and 51011 transitions. [2021-11-17 00:52:13,893 INFO L78 Accepts]: Start accepts. Automaton has 35708 states and 51011 transitions. Word has length 228 [2021-11-17 00:52:13,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:52:13,894 INFO L470 AbstractCegarLoop]: Abstraction has 35708 states and 51011 transitions. [2021-11-17 00:52:13,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-17 00:52:13,894 INFO L276 IsEmpty]: Start isEmpty. Operand 35708 states and 51011 transitions. [2021-11-17 00:52:13,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-11-17 00:52:13,931 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:52:13,931 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:52:13,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-17 00:52:14,132 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 [2021-11-17 00:52:14,132 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:52:14,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:52:14,133 INFO L85 PathProgramCache]: Analyzing trace with hash -177428610, now seen corresponding path program 1 times [2021-11-17 00:52:14,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:52:14,133 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592419074] [2021-11-17 00:52:14,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:52:14,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:52:14,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:14,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:52:14,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:14,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:52:14,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:14,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:52:14,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:14,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-17 00:52:14,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:14,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-17 00:52:14,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:14,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:52:14,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:15,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:52:15,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:15,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:52:15,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:15,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:52:15,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:15,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 00:52:15,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:15,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:52:15,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:15,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-17 00:52:15,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:15,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:52:15,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:15,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:52:15,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:15,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:52:15,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:15,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 00:52:15,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:15,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:52:15,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:15,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-17 00:52:15,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:15,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:52:15,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:15,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:52:15,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:15,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:52:15,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:15,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 00:52:15,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:15,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:52:15,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:15,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-11-17 00:52:15,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:15,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:52:15,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:15,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-17 00:52:15,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:15,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:52:15,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:15,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:52:15,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:15,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:52:15,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:15,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 00:52:15,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:15,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:52:15,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:15,389 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 3 proven. 35 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2021-11-17 00:52:15,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:52:15,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592419074] [2021-11-17 00:52:15,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592419074] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:52:15,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169915394] [2021-11-17 00:52:15,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:52:15,390 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:52:15,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:52:15,392 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) [2021-11-17 00:52:15,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-17 00:52:15,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:15,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 2428 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-17 00:52:15,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:52:17,450 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-11-17 00:52:17,450 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 00:52:17,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169915394] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:52:17,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 00:52:17,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 14 [2021-11-17 00:52:17,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390739809] [2021-11-17 00:52:17,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:52:17,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-17 00:52:17,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:52:17,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-17 00:52:17,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-11-17 00:52:17,453 INFO L87 Difference]: Start difference. First operand 35708 states and 51011 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-17 00:52:19,469 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:52:21,477 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:52:24,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:52:24,606 INFO L93 Difference]: Finished difference Result 100264 states and 143011 transitions. [2021-11-17 00:52:24,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-17 00:52:24,607 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 227 [2021-11-17 00:52:24,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:52:25,136 INFO L225 Difference]: With dead ends: 100264 [2021-11-17 00:52:25,136 INFO L226 Difference]: Without dead ends: 64160 [2021-11-17 00:52:25,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-11-17 00:52:25,267 INFO L933 BasicCegarLoop]: 1007 mSDtfsCounter, 743 mSDsluCounter, 2122 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 747 SdHoareTripleChecker+Valid, 3129 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-17 00:52:25,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [747 Valid, 3129 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 615 Invalid, 2 Unknown, 0 Unchecked, 5.8s Time] [2021-11-17 00:52:25,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64160 states. [2021-11-17 00:52:27,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64160 to 63742. [2021-11-17 00:52:27,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63742 states, 46004 states have (on average 1.3384270932962352) internal successors, (61573), 47064 states have internal predecessors, (61573), 14065 states have call successors, (14065), 3369 states have call predecessors, (14065), 3672 states have return successors, (15142), 13756 states have call predecessors, (15142), 14064 states have call successors, (15142) [2021-11-17 00:52:28,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63742 states to 63742 states and 90780 transitions. [2021-11-17 00:52:28,512 INFO L78 Accepts]: Start accepts. Automaton has 63742 states and 90780 transitions. Word has length 227 [2021-11-17 00:52:28,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:52:28,513 INFO L470 AbstractCegarLoop]: Abstraction has 63742 states and 90780 transitions. [2021-11-17 00:52:28,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-17 00:52:28,513 INFO L276 IsEmpty]: Start isEmpty. Operand 63742 states and 90780 transitions. [2021-11-17 00:52:28,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2021-11-17 00:52:28,540 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:52:28,540 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-17 00:52:28,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-17 00:52:28,763 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 [2021-11-17 00:52:28,764 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:52:28,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:52:28,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1072809895, now seen corresponding path program 1 times [2021-11-17 00:52:28,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:52:28,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654033132] [2021-11-17 00:52:28,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:52:28,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:52:28,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:28,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:52:28,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:28,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:52:28,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:28,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:52:28,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:29,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-17 00:52:29,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:29,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-17 00:52:29,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:29,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-17 00:52:29,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:29,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:52:29,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:29,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:52:29,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:29,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:52:29,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:29,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:52:29,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:29,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 00:52:29,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:29,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:52:29,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:29,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-17 00:52:30,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:30,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:52:30,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:30,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:52:30,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:30,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:52:30,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:30,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 00:52:30,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:30,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:52:30,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:30,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-17 00:52:30,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:30,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:52:30,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:30,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:52:30,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:30,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:52:30,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:30,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 00:52:30,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:30,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:52:30,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:30,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-11-17 00:52:30,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:30,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:52:30,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:30,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-17 00:52:30,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:30,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:52:30,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:30,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:52:30,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:30,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:52:30,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:30,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-17 00:52:30,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:30,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:52:30,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:30,139 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 10 proven. 35 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2021-11-17 00:52:30,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:52:30,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654033132] [2021-11-17 00:52:30,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654033132] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:52:30,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569076823] [2021-11-17 00:52:30,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:52:30,141 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:52:30,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:52:30,144 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) [2021-11-17 00:52:30,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-17 00:52:30,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:30,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 2487 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-17 00:52:30,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:52:32,358 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2021-11-17 00:52:32,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 00:52:33,743 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-11-17 00:52:33,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569076823] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-17 00:52:33,743 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-17 00:52:33,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 8] total 26 [2021-11-17 00:52:33,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380652548] [2021-11-17 00:52:33,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-17 00:52:33,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-17 00:52:33,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:52:33,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-17 00:52:33,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2021-11-17 00:52:33,746 INFO L87 Difference]: Start difference. First operand 63742 states and 90780 transitions. Second operand has 26 states, 26 states have (on average 9.26923076923077) internal successors, (241), 17 states have internal predecessors, (241), 7 states have call successors, (62), 8 states have call predecessors, (62), 8 states have return successors, (57), 10 states have call predecessors, (57), 7 states have call successors, (57) [2021-11-17 00:52:35,761 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:52:37,766 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:52:39,776 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:52:41,790 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:52:43,800 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:52:48,402 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:52:55,237 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:52:57,418 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:53:00,612 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:53:02,908 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:53:09,512 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:53:13,751 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:53:15,759 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:53:20,385 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:53:22,448 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:53:29,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:53:29,986 INFO L93 Difference]: Finished difference Result 182408 states and 273093 transitions. [2021-11-17 00:53:29,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-11-17 00:53:29,986 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 9.26923076923077) internal successors, (241), 17 states have internal predecessors, (241), 7 states have call successors, (62), 8 states have call predecessors, (62), 8 states have return successors, (57), 10 states have call predecessors, (57), 7 states have call successors, (57) Word has length 240 [2021-11-17 00:53:29,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:53:30,796 INFO L225 Difference]: With dead ends: 182408 [2021-11-17 00:53:30,797 INFO L226 Difference]: Without dead ends: 117696 [2021-11-17 00:53:31,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 603 GetRequests, 540 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1003 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=654, Invalid=3506, Unknown=0, NotChecked=0, Total=4160 [2021-11-17 00:53:31,115 INFO L933 BasicCegarLoop]: 1329 mSDtfsCounter, 2050 mSDsluCounter, 17045 mSDsCounter, 0 mSdLazyCounter, 6138 mSolverCounterSat, 677 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2286 SdHoareTripleChecker+Valid, 18374 SdHoareTripleChecker+Invalid, 6830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 677 IncrementalHoareTripleChecker+Valid, 6138 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.2s IncrementalHoareTripleChecker+Time [2021-11-17 00:53:31,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2286 Valid, 18374 Invalid, 6830 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [677 Valid, 6138 Invalid, 15 Unknown, 0 Unchecked, 49.2s Time] [2021-11-17 00:53:31,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117696 states. [2021-11-17 00:53:34,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117696 to 110274. [2021-11-17 00:53:34,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110274 states, 79713 states have (on average 1.335930149411012) internal successors, (106491), 82145 states have internal predecessors, (106491), 23829 states have call successors, (23829), 5674 states have call predecessors, (23829), 6731 states have return successors, (27234), 23176 states have call predecessors, (27234), 23828 states have call successors, (27234) [2021-11-17 00:53:35,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110274 states to 110274 states and 157554 transitions. [2021-11-17 00:53:35,625 INFO L78 Accepts]: Start accepts. Automaton has 110274 states and 157554 transitions. Word has length 240 [2021-11-17 00:53:35,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:53:35,626 INFO L470 AbstractCegarLoop]: Abstraction has 110274 states and 157554 transitions. [2021-11-17 00:53:35,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.26923076923077) internal successors, (241), 17 states have internal predecessors, (241), 7 states have call successors, (62), 8 states have call predecessors, (62), 8 states have return successors, (57), 10 states have call predecessors, (57), 7 states have call successors, (57) [2021-11-17 00:53:35,626 INFO L276 IsEmpty]: Start isEmpty. Operand 110274 states and 157554 transitions. [2021-11-17 00:53:35,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-11-17 00:53:35,666 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:53:35,666 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-17 00:53:35,697 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-11-17 00:53:35,891 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 [2021-11-17 00:53:35,891 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:53:35,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:53:35,892 INFO L85 PathProgramCache]: Analyzing trace with hash -920937652, now seen corresponding path program 1 times [2021-11-17 00:53:35,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:53:35,892 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056993260] [2021-11-17 00:53:35,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:53:35,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:53:35,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:36,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:53:36,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:36,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:53:36,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:36,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:53:36,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:36,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 00:53:36,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:36,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-17 00:53:36,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:36,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-17 00:53:36,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:36,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:53:36,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:37,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:53:37,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:37,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-17 00:53:37,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:37,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-17 00:53:37,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:37,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:53:37,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:37,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-17 00:53:37,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:37,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-17 00:53:37,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:37,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:53:37,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:37,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-17 00:53:37,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:37,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-17 00:53:37,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:37,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:53:37,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:37,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-17 00:53:37,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:37,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-17 00:53:37,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:37,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:53:37,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:37,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-17 00:53:37,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:37,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-17 00:53:37,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:37,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:53:37,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:37,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-17 00:53:37,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:37,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-17 00:53:37,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:37,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:53:37,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:37,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-11-17 00:53:37,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:37,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:53:37,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:37,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-17 00:53:37,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:37,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-17 00:53:37,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:37,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:53:37,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:37,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-17 00:53:37,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:37,437 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 9 proven. 50 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2021-11-17 00:53:37,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:53:37,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056993260] [2021-11-17 00:53:37,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056993260] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:53:37,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396302809] [2021-11-17 00:53:37,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:53:37,438 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:53:37,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:53:37,439 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) [2021-11-17 00:53:37,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-17 00:53:37,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:53:37,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 2513 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-17 00:53:37,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:53:39,451 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2021-11-17 00:53:39,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 00:53:40,730 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2021-11-17 00:53:40,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396302809] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-17 00:53:40,730 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-17 00:53:40,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 8, 8] total 28 [2021-11-17 00:53:40,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139607240] [2021-11-17 00:53:40,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-17 00:53:40,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-17 00:53:40,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:53:40,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-17 00:53:40,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=670, Unknown=0, NotChecked=0, Total=756 [2021-11-17 00:53:40,733 INFO L87 Difference]: Start difference. First operand 110274 states and 157554 transitions. Second operand has 28 states, 28 states have (on average 8.964285714285714) internal successors, (251), 19 states have internal predecessors, (251), 8 states have call successors, (63), 8 states have call predecessors, (63), 8 states have return successors, (57), 10 states have call predecessors, (57), 8 states have call successors, (57) [2021-11-17 00:53:42,754 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:53:44,766 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:53:49,362 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:54:00,929 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:54:03,403 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:54:08,780 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:54:15,344 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:54:17,369 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:54:19,439 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:54:25,628 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:54:30,798 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:54:32,822 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:55:01,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:55:01,711 INFO L93 Difference]: Finished difference Result 255436 states and 380367 transitions. [2021-11-17 00:55:01,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-11-17 00:55:01,712 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 8.964285714285714) internal successors, (251), 19 states have internal predecessors, (251), 8 states have call successors, (63), 8 states have call predecessors, (63), 8 states have return successors, (57), 10 states have call predecessors, (57), 8 states have call successors, (57) Word has length 245 [2021-11-17 00:55:01,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:55:02,434 INFO L225 Difference]: With dead ends: 255436 [2021-11-17 00:55:02,435 INFO L226 Difference]: Without dead ends: 144192 [2021-11-17 00:55:03,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 682 GetRequests, 563 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4772 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=1760, Invalid=12760, Unknown=0, NotChecked=0, Total=14520 [2021-11-17 00:55:03,165 INFO L933 BasicCegarLoop]: 2146 mSDtfsCounter, 4438 mSDsluCounter, 33755 mSDsCounter, 0 mSdLazyCounter, 12997 mSolverCounterSat, 2177 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 63.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4788 SdHoareTripleChecker+Valid, 35901 SdHoareTripleChecker+Invalid, 15185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 2177 IncrementalHoareTripleChecker+Valid, 12997 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 66.6s IncrementalHoareTripleChecker+Time [2021-11-17 00:55:03,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4788 Valid, 35901 Invalid, 15185 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [2177 Valid, 12997 Invalid, 11 Unknown, 0 Unchecked, 66.6s Time] [2021-11-17 00:55:03,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144192 states. [2021-11-17 00:55:06,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144192 to 95752. [2021-11-17 00:55:07,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95752 states, 69325 states have (on average 1.3350595023440317) internal successors, (92553), 71425 states have internal predecessors, (92553), 20603 states have call successors, (20603), 4914 states have call predecessors, (20603), 5823 states have return successors, (23526), 20038 states have call predecessors, (23526), 20602 states have call successors, (23526) [2021-11-17 00:55:07,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95752 states to 95752 states and 136682 transitions. [2021-11-17 00:55:07,481 INFO L78 Accepts]: Start accepts. Automaton has 95752 states and 136682 transitions. Word has length 245 [2021-11-17 00:55:07,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:55:07,482 INFO L470 AbstractCegarLoop]: Abstraction has 95752 states and 136682 transitions. [2021-11-17 00:55:07,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 8.964285714285714) internal successors, (251), 19 states have internal predecessors, (251), 8 states have call successors, (63), 8 states have call predecessors, (63), 8 states have return successors, (57), 10 states have call predecessors, (57), 8 states have call successors, (57) [2021-11-17 00:55:07,482 INFO L276 IsEmpty]: Start isEmpty. Operand 95752 states and 136682 transitions. [2021-11-17 00:55:07,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2021-11-17 00:55:07,513 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:55:07,513 INFO L514 BasicCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-17 00:55:07,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-17 00:55:07,713 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 [2021-11-17 00:55:07,714 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:55:07,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:55:07,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1706320960, now seen corresponding path program 1 times [2021-11-17 00:55:07,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:55:07,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432521725] [2021-11-17 00:55:07,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:55:07,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:55:07,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:07,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:55:07,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:07,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:55:07,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:07,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:55:07,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:08,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-17 00:55:08,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:08,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-17 00:55:08,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:08,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-17 00:55:08,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:08,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:55:08,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:09,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:55:09,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:09,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-17 00:55:09,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:09,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-17 00:55:09,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:09,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-17 00:55:09,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:09,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 00:55:09,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:09,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-17 00:55:09,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:09,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:55:09,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:09,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-17 00:55:09,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:09,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-17 00:55:09,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:09,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-17 00:55:09,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:09,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 00:55:09,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:09,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 00:55:09,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:09,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:55:09,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:09,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-17 00:55:09,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:09,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-17 00:55:09,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:09,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-17 00:55:09,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:09,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 00:55:09,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:09,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-11-17 00:55:09,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:09,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:55:09,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:09,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-11-17 00:55:09,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:09,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:55:09,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:09,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-17 00:55:09,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:09,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-17 00:55:09,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:09,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-17 00:55:09,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:09,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 00:55:09,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:09,555 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 9 proven. 67 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-11-17 00:55:09,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:55:09,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432521725] [2021-11-17 00:55:09,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432521725] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:55:09,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675377966] [2021-11-17 00:55:09,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:55:09,555 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:55:09,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:55:09,556 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) [2021-11-17 00:55:09,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-17 00:55:10,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:55:10,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 2539 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-17 00:55:10,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:55:11,858 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2021-11-17 00:55:11,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 00:55:13,227 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2021-11-17 00:55:13,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675377966] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-17 00:55:13,228 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-17 00:55:13,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 8, 8] total 29 [2021-11-17 00:55:13,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48141330] [2021-11-17 00:55:13,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-17 00:55:13,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-17 00:55:13,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:55:13,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-17 00:55:13,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=723, Unknown=0, NotChecked=0, Total=812 [2021-11-17 00:55:13,231 INFO L87 Difference]: Start difference. First operand 95752 states and 136682 transitions. Second operand has 29 states, 29 states have (on average 8.758620689655173) internal successors, (254), 20 states have internal predecessors, (254), 8 states have call successors, (63), 8 states have call predecessors, (63), 8 states have return successors, (57), 10 states have call predecessors, (57), 8 states have call successors, (57) [2021-11-17 00:55:15,243 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:55:17,250 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:55:19,264 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:55:23,698 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:55:29,009 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:55:31,158 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:55:33,177 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:55:36,429 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:55:38,477 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:55:45,603 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:55:47,609 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:55:51,177 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:55:55,163 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:55:57,196 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:56:01,935 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:56:04,001 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:56:12,821 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:56:14,835 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:56:22,398 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:56:24,480 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:56:28,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:56:28,139 INFO L93 Difference]: Finished difference Result 217148 states and 322481 transitions. [2021-11-17 00:56:28,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2021-11-17 00:56:28,140 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 8.758620689655173) internal successors, (254), 20 states have internal predecessors, (254), 8 states have call successors, (63), 8 states have call predecessors, (63), 8 states have return successors, (57), 10 states have call predecessors, (57), 8 states have call successors, (57) Word has length 250 [2021-11-17 00:56:28,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:56:28,722 INFO L225 Difference]: With dead ends: 217148 [2021-11-17 00:56:28,722 INFO L226 Difference]: Without dead ends: 120426 [2021-11-17 00:56:29,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 699 GetRequests, 573 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5474 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=1829, Invalid=14427, Unknown=0, NotChecked=0, Total=16256 [2021-11-17 00:56:29,173 INFO L933 BasicCegarLoop]: 1589 mSDtfsCounter, 6200 mSDsluCounter, 16555 mSDsCounter, 0 mSdLazyCounter, 5645 mSolverCounterSat, 3217 mSolverCounterUnsat, 20 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 58.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6552 SdHoareTripleChecker+Valid, 18144 SdHoareTripleChecker+Invalid, 8882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3217 IncrementalHoareTripleChecker+Valid, 5645 IncrementalHoareTripleChecker+Invalid, 20 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60.7s IncrementalHoareTripleChecker+Time [2021-11-17 00:56:29,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6552 Valid, 18144 Invalid, 8882 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3217 Valid, 5645 Invalid, 20 Unknown, 0 Unchecked, 60.7s Time] [2021-11-17 00:56:29,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120426 states. [2021-11-17 00:56:32,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120426 to 86590. [2021-11-17 00:56:32,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86590 states, 62749 states have (on average 1.3324355766625764) internal successors, (83609), 64603 states have internal predecessors, (83609), 18571 states have call successors, (18571), 4450 states have call predecessors, (18571), 5269 states have return successors, (21082), 18090 states have call predecessors, (21082), 18570 states have call successors, (21082) [2021-11-17 00:56:33,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86590 states to 86590 states and 123262 transitions. [2021-11-17 00:56:33,062 INFO L78 Accepts]: Start accepts. Automaton has 86590 states and 123262 transitions. Word has length 250 [2021-11-17 00:56:33,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:56:33,062 INFO L470 AbstractCegarLoop]: Abstraction has 86590 states and 123262 transitions. [2021-11-17 00:56:33,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 8.758620689655173) internal successors, (254), 20 states have internal predecessors, (254), 8 states have call successors, (63), 8 states have call predecessors, (63), 8 states have return successors, (57), 10 states have call predecessors, (57), 8 states have call successors, (57) [2021-11-17 00:56:33,062 INFO L276 IsEmpty]: Start isEmpty. Operand 86590 states and 123262 transitions. [2021-11-17 00:56:33,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2021-11-17 00:56:33,107 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:56:33,107 INFO L514 BasicCegarLoop]: trace histogram [12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-17 00:56:33,135 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-11-17 00:56:33,323 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 [2021-11-17 00:56:33,323 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:56:33,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:56:33,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1593917350, now seen corresponding path program 1 times [2021-11-17 00:56:33,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:56:33,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620441285] [2021-11-17 00:56:33,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:56:33,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:56:33,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:33,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:56:33,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:33,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:56:33,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:33,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:56:33,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:33,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-17 00:56:33,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:33,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-17 00:56:33,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:33,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-17 00:56:33,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:33,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:56:34,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:56:34,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-17 00:56:34,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-17 00:56:34,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-17 00:56:34,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-17 00:56:34,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-11-17 00:56:34,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:56:34,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-17 00:56:34,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-17 00:56:34,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-17 00:56:34,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-17 00:56:34,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-17 00:56:34,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:56:34,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-17 00:56:34,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-17 00:56:34,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-17 00:56:34,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-17 00:56:34,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-17 00:56:34,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:56:34,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-11-17 00:56:34,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:56:34,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-17 00:56:34,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-17 00:56:34,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-17 00:56:34,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-17 00:56:34,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:34,696 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 11 proven. 88 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2021-11-17 00:56:34,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:56:34,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620441285] [2021-11-17 00:56:34,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620441285] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:56:34,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115056616] [2021-11-17 00:56:34,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:56:34,698 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:56:34,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:56:34,700 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) [2021-11-17 00:56:34,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-17 00:56:35,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:35,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 2565 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-17 00:56:35,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:56:37,244 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2021-11-17 00:56:37,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 00:56:38,980 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2021-11-17 00:56:38,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115056616] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-17 00:56:38,980 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-17 00:56:38,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [16, 6] total 26 [2021-11-17 00:56:38,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545487641] [2021-11-17 00:56:38,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:56:38,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-17 00:56:38,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:56:38,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-17 00:56:38,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=570, Unknown=0, NotChecked=0, Total=650 [2021-11-17 00:56:38,982 INFO L87 Difference]: Start difference. First operand 86590 states and 123262 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 6 states have internal predecessors, (102), 4 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (22), 5 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-17 00:56:40,993 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:56:43,005 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:56:45,018 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:56:51,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:56:51,230 INFO L93 Difference]: Finished difference Result 224266 states and 319780 transitions. [2021-11-17 00:56:51,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-17 00:56:51,231 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 6 states have internal predecessors, (102), 4 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (22), 5 states have call predecessors, (22), 3 states have call successors, (22) Word has length 254 [2021-11-17 00:56:51,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:56:52,033 INFO L225 Difference]: With dead ends: 224266 [2021-11-17 00:56:52,033 INFO L226 Difference]: Without dead ends: 140346 [2021-11-17 00:56:52,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 587 GetRequests, 558 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=114, Invalid=816, Unknown=0, NotChecked=0, Total=930 [2021-11-17 00:56:52,281 INFO L933 BasicCegarLoop]: 1048 mSDtfsCounter, 867 mSDsluCounter, 4147 mSDsCounter, 0 mSdLazyCounter, 991 mSolverCounterSat, 13 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 871 SdHoareTripleChecker+Valid, 5195 SdHoareTripleChecker+Invalid, 1007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 991 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2021-11-17 00:56:52,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [871 Valid, 5195 Invalid, 1007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 991 Invalid, 3 Unknown, 0 Unchecked, 8.5s Time] [2021-11-17 00:56:52,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140346 states. [2021-11-17 00:56:56,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140346 to 139574. [2021-11-17 00:56:56,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139574 states, 101067 states have (on average 1.332769351024568) internal successors, (134699), 104277 states have internal predecessors, (134699), 29921 states have call successors, (29921), 7150 states have call predecessors, (29921), 8585 states have return successors, (34396), 29036 states have call predecessors, (34396), 29920 states have call successors, (34396) [2021-11-17 00:56:57,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139574 states to 139574 states and 199016 transitions. [2021-11-17 00:56:57,357 INFO L78 Accepts]: Start accepts. Automaton has 139574 states and 199016 transitions. Word has length 254 [2021-11-17 00:56:57,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:56:57,359 INFO L470 AbstractCegarLoop]: Abstraction has 139574 states and 199016 transitions. [2021-11-17 00:56:57,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 6 states have internal predecessors, (102), 4 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (22), 5 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-17 00:56:57,359 INFO L276 IsEmpty]: Start isEmpty. Operand 139574 states and 199016 transitions. [2021-11-17 00:56:57,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2021-11-17 00:56:57,413 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:56:57,413 INFO L514 BasicCegarLoop]: trace histogram [12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-17 00:56:57,436 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-11-17 00:56:57,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-17 00:56:57,623 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:56:57,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:56:57,623 INFO L85 PathProgramCache]: Analyzing trace with hash -863459029, now seen corresponding path program 1 times [2021-11-17 00:56:57,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:56:57,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901568204] [2021-11-17 00:56:57,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:56:57,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:56:57,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:58,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:56:58,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:58,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:56:58,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:58,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:56:58,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:58,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-17 00:56:58,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:58,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-17 00:56:58,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:58,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-17 00:56:58,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:58,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:56:58,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:58,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:56:58,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:59,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-17 00:56:59,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:59,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-17 00:56:59,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:59,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-17 00:56:59,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:59,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-17 00:56:59,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:59,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-11-17 00:56:59,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:59,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:56:59,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:59,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-17 00:56:59,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:59,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-17 00:56:59,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:59,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-17 00:56:59,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:59,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-17 00:56:59,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:59,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-17 00:56:59,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:59,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:56:59,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:59,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-17 00:56:59,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:59,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-17 00:56:59,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:59,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-17 00:56:59,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:59,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-17 00:56:59,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:59,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-17 00:56:59,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:59,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:56:59,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:59,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-11-17 00:56:59,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:59,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:56:59,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:59,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-17 00:56:59,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:59,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-17 00:56:59,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:59,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-17 00:56:59,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:59,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-17 00:56:59,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:59,236 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 12 proven. 86 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-11-17 00:56:59,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:56:59,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901568204] [2021-11-17 00:56:59,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901568204] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:56:59,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591596530] [2021-11-17 00:56:59,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:56:59,238 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:56:59,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:56:59,239 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 00:56:59,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-17 00:56:59,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:59,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 2571 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-17 00:56:59,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:57:01,421 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2021-11-17 00:57:01,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 00:57:02,969 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2021-11-17 00:57:02,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591596530] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-17 00:57:02,970 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-17 00:57:02,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 8, 8] total 29 [2021-11-17 00:57:02,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679651963] [2021-11-17 00:57:02,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-17 00:57:02,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-17 00:57:02,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:57:02,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-17 00:57:02,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=722, Unknown=0, NotChecked=0, Total=812 [2021-11-17 00:57:02,973 INFO L87 Difference]: Start difference. First operand 139574 states and 199016 transitions. Second operand has 29 states, 29 states have (on average 8.89655172413793) internal successors, (258), 20 states have internal predecessors, (258), 7 states have call successors, (62), 8 states have call predecessors, (62), 8 states have return successors, (57), 10 states have call predecessors, (57), 7 states have call successors, (57) [2021-11-17 00:57:04,989 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:57:06,994 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:57:08,999 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:57:11,008 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:57:15,306 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:57:21,401 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:57:24,049 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:57:26,102 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:57:29,493 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:57:31,531 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:57:35,502 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:57:39,778 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:57:43,569 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:57:45,597 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:57:58,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:57:58,645 INFO L93 Difference]: Finished difference Result 443950 states and 665559 transitions. [2021-11-17 00:57:58,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-11-17 00:57:58,646 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 8.89655172413793) internal successors, (258), 20 states have internal predecessors, (258), 7 states have call successors, (62), 8 states have call predecessors, (62), 8 states have return successors, (57), 10 states have call predecessors, (57), 7 states have call successors, (57) Word has length 258 [2021-11-17 00:57:58,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:58:00,021 INFO L225 Difference]: With dead ends: 443950 [2021-11-17 00:58:00,021 INFO L226 Difference]: Without dead ends: 295118 [2021-11-17 00:58:01,096 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 576 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1464 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=745, Invalid=5107, Unknown=0, NotChecked=0, Total=5852 [2021-11-17 00:58:01,097 INFO L933 BasicCegarLoop]: 1302 mSDtfsCounter, 2643 mSDsluCounter, 17660 mSDsCounter, 0 mSdLazyCounter, 6845 mSolverCounterSat, 1257 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2876 SdHoareTripleChecker+Valid, 18962 SdHoareTripleChecker+Invalid, 8115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1257 IncrementalHoareTripleChecker+Valid, 6845 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.3s IncrementalHoareTripleChecker+Time [2021-11-17 00:58:01,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2876 Valid, 18962 Invalid, 8115 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1257 Valid, 6845 Invalid, 13 Unknown, 0 Unchecked, 44.3s Time] [2021-11-17 00:58:01,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295118 states.