./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--misc--usbtest.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--misc--usbtest.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 045b49e5089f039c3b28eef4cf3a9c907cbda8f22472af0061e42bad883dd2f9 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 23:59:31,311 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 23:59:31,313 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 23:59:31,350 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 23:59:31,351 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 23:59:31,352 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 23:59:31,354 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 23:59:31,356 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 23:59:31,357 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 23:59:31,361 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 23:59:31,362 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 23:59:31,364 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 23:59:31,364 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 23:59:31,365 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 23:59:31,366 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 23:59:31,369 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 23:59:31,370 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 23:59:31,371 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 23:59:31,372 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 23:59:31,376 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 23:59:31,379 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 23:59:31,380 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 23:59:31,380 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 23:59:31,381 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 23:59:31,382 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 23:59:31,388 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 23:59:31,388 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 23:59:31,388 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 23:59:31,389 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 23:59:31,390 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 23:59:31,391 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 23:59:31,391 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 23:59:31,392 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 23:59:31,392 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 23:59:31,393 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 23:59:31,393 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 23:59:31,394 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 23:59:31,394 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 23:59:31,394 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 23:59:31,394 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 23:59:31,395 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 23:59:31,397 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 23:59:31,398 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-19 23:59:31,422 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 23:59:31,423 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 23:59:31,423 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 23:59:31,423 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 23:59:31,424 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 23:59:31,424 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 23:59:31,425 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 23:59:31,425 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 23:59:31,425 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 23:59:31,426 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 23:59:31,426 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 23:59:31,426 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 23:59:31,426 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 23:59:31,426 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 23:59:31,426 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 23:59:31,427 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 23:59:31,427 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 23:59:31,427 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 23:59:31,427 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 23:59:31,428 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 23:59:31,428 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 23:59:31,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 23:59:31,429 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 23:59:31,429 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 23:59:31,429 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 23:59:31,429 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 23:59:31,429 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 23:59:31,430 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 23:59:31,430 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 23:59:31,430 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 23:59:31,430 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 045b49e5089f039c3b28eef4cf3a9c907cbda8f22472af0061e42bad883dd2f9 [2022-07-19 23:59:31,628 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 23:59:31,651 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 23:59:31,653 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 23:59:31,654 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 23:59:31,654 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 23:59:31,656 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--misc--usbtest.ko-entry_point.cil.out.i [2022-07-19 23:59:31,705 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9eca2ddfc/6268cb22be0c400a8b22a93b791a75fd/FLAG0092732cf [2022-07-19 23:59:32,330 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 23:59:32,331 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--misc--usbtest.ko-entry_point.cil.out.i [2022-07-19 23:59:32,364 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9eca2ddfc/6268cb22be0c400a8b22a93b791a75fd/FLAG0092732cf [2022-07-19 23:59:32,734 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9eca2ddfc/6268cb22be0c400a8b22a93b791a75fd [2022-07-19 23:59:32,736 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 23:59:32,737 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 23:59:32,740 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 23:59:32,740 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 23:59:32,742 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 23:59:32,742 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:59:32" (1/1) ... [2022-07-19 23:59:32,743 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bfa253f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:59:32, skipping insertion in model container [2022-07-19 23:59:32,743 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:59:32" (1/1) ... [2022-07-19 23:59:32,748 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 23:59:32,827 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 23:59:33,174 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3528] [2022-07-19 23:59:33,174 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3529-3530] [2022-07-19 23:59:33,420 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--misc--usbtest.ko-entry_point.cil.out.i[105797,105810] [2022-07-19 23:59:34,091 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 23:59:34,115 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 23:59:34,167 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3528] [2022-07-19 23:59:34,169 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3529-3530] [2022-07-19 23:59:34,180 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--misc--usbtest.ko-entry_point.cil.out.i[105797,105810] [2022-07-19 23:59:34,309 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 23:59:34,335 INFO L208 MainTranslator]: Completed translation [2022-07-19 23:59:34,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:59:34 WrapperNode [2022-07-19 23:59:34,336 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 23:59:34,337 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 23:59:34,337 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 23:59:34,337 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 23:59:34,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:59:34" (1/1) ... [2022-07-19 23:59:34,385 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:59:34" (1/1) ... [2022-07-19 23:59:34,459 INFO L137 Inliner]: procedures = 189, calls = 1686, calls flagged for inlining = 77, calls inlined = 68, statements flattened = 4532 [2022-07-19 23:59:34,459 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 23:59:34,460 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 23:59:34,460 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 23:59:34,460 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 23:59:34,466 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:59:34" (1/1) ... [2022-07-19 23:59:34,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:59:34" (1/1) ... [2022-07-19 23:59:34,512 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:59:34" (1/1) ... [2022-07-19 23:59:34,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:59:34" (1/1) ... [2022-07-19 23:59:34,601 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:59:34" (1/1) ... [2022-07-19 23:59:34,621 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:59:34" (1/1) ... [2022-07-19 23:59:34,641 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:59:34" (1/1) ... [2022-07-19 23:59:34,661 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 23:59:34,663 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 23:59:34,663 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 23:59:34,664 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 23:59:34,665 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:59:34" (1/1) ... [2022-07-19 23:59:34,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 23:59:34,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:59:34,733 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) [2022-07-19 23:59:34,754 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 [2022-07-19 23:59:34,771 INFO L130 BoogieDeclarations]: Found specification of procedure sg_page [2022-07-19 23:59:34,771 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_page [2022-07-19 23:59:34,772 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-07-19 23:59:34,772 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-07-19 23:59:34,772 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-07-19 23:59:34,772 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-07-19 23:59:34,772 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-07-19 23:59:34,772 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-07-19 23:59:34,772 INFO L130 BoogieDeclarations]: Found specification of procedure free_sglist [2022-07-19 23:59:34,772 INFO L138 BoogieDeclarations]: Found implementation of procedure free_sglist [2022-07-19 23:59:34,772 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc_array [2022-07-19 23:59:34,773 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc_array [2022-07-19 23:59:34,773 INFO L130 BoogieDeclarations]: Found specification of procedure test_iso_queue [2022-07-19 23:59:34,773 INFO L138 BoogieDeclarations]: Found implementation of procedure test_iso_queue [2022-07-19 23:59:34,773 INFO L130 BoogieDeclarations]: Found specification of procedure simple_check_buf [2022-07-19 23:59:34,773 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_check_buf [2022-07-19 23:59:34,773 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-19 23:59:34,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-19 23:59:34,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 23:59:34,774 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2022-07-19 23:59:34,774 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2022-07-19 23:59:34,774 INFO L130 BoogieDeclarations]: Found specification of procedure perform_sglist [2022-07-19 23:59:34,774 INFO L138 BoogieDeclarations]: Found implementation of procedure perform_sglist [2022-07-19 23:59:34,774 INFO L130 BoogieDeclarations]: Found specification of procedure test_unaligned_bulk [2022-07-19 23:59:34,774 INFO L138 BoogieDeclarations]: Found implementation of procedure test_unaligned_bulk [2022-07-19 23:59:34,775 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-07-19 23:59:34,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-07-19 23:59:34,775 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_sglist [2022-07-19 23:59:34,775 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_sglist [2022-07-19 23:59:34,775 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-07-19 23:59:34,775 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-07-19 23:59:34,775 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-19 23:59:34,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-19 23:59:34,776 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2022-07-19 23:59:34,776 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2022-07-19 23:59:34,776 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-07-19 23:59:34,776 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-07-19 23:59:34,776 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-07-19 23:59:34,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-07-19 23:59:34,777 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-19 23:59:34,777 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-19 23:59:34,777 INFO L130 BoogieDeclarations]: Found specification of procedure set_altsetting [2022-07-19 23:59:34,777 INFO L138 BoogieDeclarations]: Found implementation of procedure set_altsetting [2022-07-19 23:59:34,777 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2022-07-19 23:59:34,777 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2022-07-19 23:59:34,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 23:59:34,778 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-19 23:59:34,778 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-19 23:59:34,778 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2022-07-19 23:59:34,778 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2022-07-19 23:59:34,778 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-19 23:59:34,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-19 23:59:34,779 INFO L130 BoogieDeclarations]: Found specification of procedure verify_not_halted [2022-07-19 23:59:34,779 INFO L138 BoogieDeclarations]: Found implementation of procedure verify_not_halted [2022-07-19 23:59:34,780 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2022-07-19 23:59:34,780 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2022-07-19 23:59:34,780 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-07-19 23:59:34,780 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-07-19 23:59:34,780 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-19 23:59:34,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-19 23:59:34,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-19 23:59:34,781 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-19 23:59:34,781 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2022-07-19 23:59:34,781 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2022-07-19 23:59:34,781 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-19 23:59:34,781 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-19 23:59:34,781 INFO L130 BoogieDeclarations]: Found specification of procedure test_halt [2022-07-19 23:59:34,782 INFO L138 BoogieDeclarations]: Found implementation of procedure test_halt [2022-07-19 23:59:34,782 INFO L130 BoogieDeclarations]: Found specification of procedure usbtest_alloc_urb [2022-07-19 23:59:34,782 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtest_alloc_urb [2022-07-19 23:59:34,782 INFO L130 BoogieDeclarations]: Found specification of procedure unlink1 [2022-07-19 23:59:34,782 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink1 [2022-07-19 23:59:34,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 23:59:34,783 INFO L130 BoogieDeclarations]: Found specification of procedure ctrl_out [2022-07-19 23:59:34,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ctrl_out [2022-07-19 23:59:34,783 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-19 23:59:34,783 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-19 23:59:34,783 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2022-07-19 23:59:34,783 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2022-07-19 23:59:34,783 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_status [2022-07-19 23:59:34,783 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_status [2022-07-19 23:59:34,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 23:59:34,784 INFO L130 BoogieDeclarations]: Found specification of procedure is_good_config [2022-07-19 23:59:34,784 INFO L138 BoogieDeclarations]: Found implementation of procedure is_good_config [2022-07-19 23:59:34,784 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2022-07-19 23:59:34,784 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2022-07-19 23:59:34,784 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion [2022-07-19 23:59:34,785 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion [2022-07-19 23:59:34,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-19 23:59:34,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 23:59:34,785 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unlink_urb [2022-07-19 23:59:34,785 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unlink_urb [2022-07-19 23:59:34,786 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-07-19 23:59:34,786 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-07-19 23:59:34,786 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2022-07-19 23:59:34,786 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2022-07-19 23:59:34,787 INFO L130 BoogieDeclarations]: Found specification of procedure testdev_to_usbdev [2022-07-19 23:59:34,787 INFO L138 BoogieDeclarations]: Found implementation of procedure testdev_to_usbdev [2022-07-19 23:59:34,787 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2022-07-19 23:59:34,787 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2022-07-19 23:59:34,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-19 23:59:34,787 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_simple [2022-07-19 23:59:34,787 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_simple [2022-07-19 23:59:34,788 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2022-07-19 23:59:34,788 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2022-07-19 23:59:34,788 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2022-07-19 23:59:34,788 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2022-07-19 23:59:34,788 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-07-19 23:59:34,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-07-19 23:59:34,788 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-07-19 23:59:34,789 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-07-19 23:59:34,789 INFO L130 BoogieDeclarations]: Found specification of procedure simple_io [2022-07-19 23:59:34,789 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_io [2022-07-19 23:59:34,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 23:59:34,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-19 23:59:34,792 INFO L130 BoogieDeclarations]: Found specification of procedure simple_alloc_urb [2022-07-19 23:59:34,792 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_alloc_urb [2022-07-19 23:59:34,792 INFO L130 BoogieDeclarations]: Found specification of procedure simple_free_urb [2022-07-19 23:59:34,792 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_free_urb [2022-07-19 23:59:34,793 INFO L130 BoogieDeclarations]: Found specification of procedure simple_fill_buf [2022-07-19 23:59:34,793 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_fill_buf [2022-07-19 23:59:34,793 INFO L130 BoogieDeclarations]: Found specification of procedure do_gettimeofday [2022-07-19 23:59:34,794 INFO L138 BoogieDeclarations]: Found implementation of procedure do_gettimeofday [2022-07-19 23:59:34,794 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-07-19 23:59:34,798 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-07-19 23:59:34,798 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-19 23:59:34,798 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-19 23:59:34,798 INFO L130 BoogieDeclarations]: Found specification of procedure usbtest_ioctl [2022-07-19 23:59:34,798 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtest_ioctl [2022-07-19 23:59:34,799 INFO L130 BoogieDeclarations]: Found specification of procedure buffer_offset [2022-07-19 23:59:34,799 INFO L138 BoogieDeclarations]: Found implementation of procedure buffer_offset [2022-07-19 23:59:34,799 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-07-19 23:59:34,799 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-07-19 23:59:34,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 23:59:34,799 INFO L130 BoogieDeclarations]: Found specification of procedure usb_clear_halt [2022-07-19 23:59:34,799 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_clear_halt [2022-07-19 23:59:34,799 INFO L130 BoogieDeclarations]: Found specification of procedure usbtest_disconnect [2022-07-19 23:59:34,799 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtest_disconnect [2022-07-19 23:59:34,800 INFO L130 BoogieDeclarations]: Found specification of procedure check_guard_bytes [2022-07-19 23:59:34,800 INFO L138 BoogieDeclarations]: Found implementation of procedure check_guard_bytes [2022-07-19 23:59:34,800 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-07-19 23:59:34,800 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-07-19 23:59:34,800 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-07-19 23:59:34,800 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-07-19 23:59:34,800 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-19 23:59:34,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-19 23:59:34,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 23:59:34,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 23:59:34,801 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_descriptor [2022-07-19 23:59:34,801 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_descriptor [2022-07-19 23:59:35,328 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 23:59:35,330 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 23:59:35,658 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-19 23:59:37,439 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 23:59:37,456 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 23:59:37,456 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 23:59:37,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:59:37 BoogieIcfgContainer [2022-07-19 23:59:37,460 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 23:59:37,462 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 23:59:37,462 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 23:59:37,477 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 23:59:37,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 11:59:32" (1/3) ... [2022-07-19 23:59:37,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4beac240 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:59:37, skipping insertion in model container [2022-07-19 23:59:37,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:59:34" (2/3) ... [2022-07-19 23:59:37,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4beac240 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:59:37, skipping insertion in model container [2022-07-19 23:59:37,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:59:37" (3/3) ... [2022-07-19 23:59:37,479 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--misc--usbtest.ko-entry_point.cil.out.i [2022-07-19 23:59:37,505 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 23:59:37,505 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 23:59:37,608 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 23:59:37,612 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@493239c9, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6693714d [2022-07-19 23:59:37,612 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 23:59:37,620 INFO L276 IsEmpty]: Start isEmpty. Operand has 1344 states, 1018 states have (on average 1.4292730844793713) internal successors, (1455), 1033 states have internal predecessors, (1455), 256 states have call successors, (256), 69 states have call predecessors, (256), 68 states have return successors, (253), 250 states have call predecessors, (253), 253 states have call successors, (253) [2022-07-19 23:59:37,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-19 23:59:37,632 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:59:37,633 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:59:37,633 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:59:37,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:59:37,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1366154187, now seen corresponding path program 1 times [2022-07-19 23:59:37,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:59:37,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44964839] [2022-07-19 23:59:37,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:59:37,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:59:37,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:37,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:59:37,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:37,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:59:38,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:38,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 23:59:38,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:38,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:59:38,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:38,043 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-19 23:59:38,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:59:38,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44964839] [2022-07-19 23:59:38,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44964839] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:59:38,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:59:38,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 23:59:38,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841371504] [2022-07-19 23:59:38,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:59:38,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 23:59:38,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:59:38,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 23:59:38,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:59:38,083 INFO L87 Difference]: Start difference. First operand has 1344 states, 1018 states have (on average 1.4292730844793713) internal successors, (1455), 1033 states have internal predecessors, (1455), 256 states have call successors, (256), 69 states have call predecessors, (256), 68 states have return successors, (253), 250 states have call predecessors, (253), 253 states have call successors, (253) Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-19 23:59:41,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:59:41,258 INFO L93 Difference]: Finished difference Result 3055 states and 4642 transitions. [2022-07-19 23:59:41,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 23:59:41,260 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 39 [2022-07-19 23:59:41,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:59:41,278 INFO L225 Difference]: With dead ends: 3055 [2022-07-19 23:59:41,278 INFO L226 Difference]: Without dead ends: 1679 [2022-07-19 23:59:41,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-19 23:59:41,290 INFO L413 NwaCegarLoop]: 1721 mSDtfsCounter, 1287 mSDsluCounter, 2865 mSDsCounter, 0 mSdLazyCounter, 2089 mSolverCounterSat, 785 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1361 SdHoareTripleChecker+Valid, 4586 SdHoareTripleChecker+Invalid, 2874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 785 IncrementalHoareTripleChecker+Valid, 2089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-19 23:59:41,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1361 Valid, 4586 Invalid, 2874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [785 Valid, 2089 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-19 23:59:41,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1679 states. [2022-07-19 23:59:41,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1679 to 1357. [2022-07-19 23:59:41,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1357 states, 1030 states have (on average 1.4116504854368932) internal successors, (1454), 1041 states have internal predecessors, (1454), 255 states have call successors, (255), 72 states have call predecessors, (255), 71 states have return successors, (254), 250 states have call predecessors, (254), 254 states have call successors, (254) [2022-07-19 23:59:41,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1357 states to 1357 states and 1963 transitions. [2022-07-19 23:59:41,430 INFO L78 Accepts]: Start accepts. Automaton has 1357 states and 1963 transitions. Word has length 39 [2022-07-19 23:59:41,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:59:41,431 INFO L495 AbstractCegarLoop]: Abstraction has 1357 states and 1963 transitions. [2022-07-19 23:59:41,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-19 23:59:41,431 INFO L276 IsEmpty]: Start isEmpty. Operand 1357 states and 1963 transitions. [2022-07-19 23:59:41,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-19 23:59:41,434 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:59:41,434 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:59:41,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 23:59:41,435 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:59:41,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:59:41,435 INFO L85 PathProgramCache]: Analyzing trace with hash 280385052, now seen corresponding path program 1 times [2022-07-19 23:59:41,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:59:41,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163790678] [2022-07-19 23:59:41,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:59:41,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:59:41,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:41,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:59:41,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:41,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:59:41,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:41,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 23:59:41,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:41,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 23:59:41,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:41,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 23:59:41,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:41,608 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 23:59:41,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:59:41,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163790678] [2022-07-19 23:59:41,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163790678] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:59:41,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:59:41,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 23:59:41,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398187194] [2022-07-19 23:59:41,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:59:41,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 23:59:41,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:59:41,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 23:59:41,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:59:41,611 INFO L87 Difference]: Start difference. First operand 1357 states and 1963 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 23:59:44,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:59:44,642 INFO L93 Difference]: Finished difference Result 3009 states and 4438 transitions. [2022-07-19 23:59:44,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 23:59:44,642 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 60 [2022-07-19 23:59:44,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:59:44,650 INFO L225 Difference]: With dead ends: 3009 [2022-07-19 23:59:44,650 INFO L226 Difference]: Without dead ends: 1675 [2022-07-19 23:59:44,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-19 23:59:44,658 INFO L413 NwaCegarLoop]: 1694 mSDtfsCounter, 1169 mSDsluCounter, 2845 mSDsCounter, 0 mSdLazyCounter, 2066 mSolverCounterSat, 755 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1238 SdHoareTripleChecker+Valid, 4539 SdHoareTripleChecker+Invalid, 2821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 755 IncrementalHoareTripleChecker+Valid, 2066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-19 23:59:44,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1238 Valid, 4539 Invalid, 2821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [755 Valid, 2066 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-19 23:59:44,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1675 states. [2022-07-19 23:59:44,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1675 to 1357. [2022-07-19 23:59:44,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1357 states, 1030 states have (on average 1.4106796116504854) internal successors, (1453), 1041 states have internal predecessors, (1453), 255 states have call successors, (255), 72 states have call predecessors, (255), 71 states have return successors, (254), 250 states have call predecessors, (254), 254 states have call successors, (254) [2022-07-19 23:59:44,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1357 states to 1357 states and 1962 transitions. [2022-07-19 23:59:44,724 INFO L78 Accepts]: Start accepts. Automaton has 1357 states and 1962 transitions. Word has length 60 [2022-07-19 23:59:44,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:59:44,724 INFO L495 AbstractCegarLoop]: Abstraction has 1357 states and 1962 transitions. [2022-07-19 23:59:44,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 23:59:44,725 INFO L276 IsEmpty]: Start isEmpty. Operand 1357 states and 1962 transitions. [2022-07-19 23:59:44,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-19 23:59:44,726 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:59:44,726 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:59:44,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 23:59:44,727 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:59:44,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:59:44,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1098033502, now seen corresponding path program 1 times [2022-07-19 23:59:44,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:59:44,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543173693] [2022-07-19 23:59:44,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:59:44,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:59:44,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:44,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:59:44,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:44,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:59:44,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:44,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 23:59:44,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:44,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 23:59:44,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:44,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 23:59:44,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:44,932 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-19 23:59:44,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:59:44,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543173693] [2022-07-19 23:59:44,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543173693] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:59:44,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:59:44,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 23:59:44,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847291709] [2022-07-19 23:59:44,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:59:44,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 23:59:44,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:59:44,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 23:59:44,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:59:44,935 INFO L87 Difference]: Start difference. First operand 1357 states and 1962 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-19 23:59:47,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:59:47,819 INFO L93 Difference]: Finished difference Result 1711 states and 2534 transitions. [2022-07-19 23:59:47,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 23:59:47,820 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 60 [2022-07-19 23:59:47,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:59:47,829 INFO L225 Difference]: With dead ends: 1711 [2022-07-19 23:59:47,829 INFO L226 Difference]: Without dead ends: 1708 [2022-07-19 23:59:47,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 23:59:47,832 INFO L413 NwaCegarLoop]: 1661 mSDtfsCounter, 3045 mSDsluCounter, 1554 mSDsCounter, 0 mSdLazyCounter, 1433 mSolverCounterSat, 1179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3197 SdHoareTripleChecker+Valid, 3215 SdHoareTripleChecker+Invalid, 2612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1179 IncrementalHoareTripleChecker+Valid, 1433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-19 23:59:47,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3197 Valid, 3215 Invalid, 2612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1179 Valid, 1433 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-19 23:59:47,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1708 states. [2022-07-19 23:59:47,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1708 to 1387. [2022-07-19 23:59:47,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1387 states, 1049 states have (on average 1.40419447092469) internal successors, (1473), 1060 states have internal predecessors, (1473), 259 states have call successors, (259), 79 states have call predecessors, (259), 78 states have return successors, (258), 254 states have call predecessors, (258), 258 states have call successors, (258) [2022-07-19 23:59:47,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1387 states to 1387 states and 1990 transitions. [2022-07-19 23:59:47,877 INFO L78 Accepts]: Start accepts. Automaton has 1387 states and 1990 transitions. Word has length 60 [2022-07-19 23:59:47,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:59:47,878 INFO L495 AbstractCegarLoop]: Abstraction has 1387 states and 1990 transitions. [2022-07-19 23:59:47,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-19 23:59:47,878 INFO L276 IsEmpty]: Start isEmpty. Operand 1387 states and 1990 transitions. [2022-07-19 23:59:47,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-19 23:59:47,886 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:59:47,886 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:59:47,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 23:59:47,887 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:59:47,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:59:47,887 INFO L85 PathProgramCache]: Analyzing trace with hash -965990945, now seen corresponding path program 1 times [2022-07-19 23:59:47,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:59:47,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589110306] [2022-07-19 23:59:47,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:59:47,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:59:47,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:48,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:59:48,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:48,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:59:48,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:48,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 23:59:48,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:48,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 23:59:48,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:48,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 23:59:48,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:48,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 23:59:48,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:48,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:59:48,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:48,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 23:59:48,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:48,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-19 23:59:48,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:48,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:59:48,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:48,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-19 23:59:48,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:48,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-19 23:59:48,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:48,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-19 23:59:48,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:48,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-19 23:59:48,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:59:48,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589110306] [2022-07-19 23:59:48,163 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-07-19 23:59:48,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857972878] [2022-07-19 23:59:48,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:59:48,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:59:48,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:59:48,165 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) [2022-07-19 23:59:48,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 23:59:48,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:48,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 2437 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 23:59:48,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:59:48,783 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 23:59:48,783 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:59:48,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857972878] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:59:48,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:59:48,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 23:59:48,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854592524] [2022-07-19 23:59:48,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:59:48,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 23:59:48,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:59:48,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 23:59:48,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-19 23:59:48,785 INFO L87 Difference]: Start difference. First operand 1387 states and 1990 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-19 23:59:48,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:59:48,835 INFO L93 Difference]: Finished difference Result 2751 states and 3957 transitions. [2022-07-19 23:59:48,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 23:59:48,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 160 [2022-07-19 23:59:48,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:59:48,842 INFO L225 Difference]: With dead ends: 2751 [2022-07-19 23:59:48,842 INFO L226 Difference]: Without dead ends: 1388 [2022-07-19 23:59:48,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-19 23:59:48,848 INFO L413 NwaCegarLoop]: 1921 mSDtfsCounter, 0 mSDsluCounter, 1916 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3837 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 23:59:48,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3837 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 23:59:48,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1388 states. [2022-07-19 23:59:48,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1388 to 1388. [2022-07-19 23:59:48,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1388 states, 1050 states have (on average 1.4038095238095238) internal successors, (1474), 1061 states have internal predecessors, (1474), 259 states have call successors, (259), 79 states have call predecessors, (259), 78 states have return successors, (258), 254 states have call predecessors, (258), 258 states have call successors, (258) [2022-07-19 23:59:48,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 1991 transitions. [2022-07-19 23:59:48,888 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 1991 transitions. Word has length 160 [2022-07-19 23:59:48,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:59:48,888 INFO L495 AbstractCegarLoop]: Abstraction has 1388 states and 1991 transitions. [2022-07-19 23:59:48,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-19 23:59:48,889 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 1991 transitions. [2022-07-19 23:59:48,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-19 23:59:48,893 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:59:48,894 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:59:48,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 23:59:49,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:59:49,116 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:59:49,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:59:49,116 INFO L85 PathProgramCache]: Analyzing trace with hash -558992368, now seen corresponding path program 1 times [2022-07-19 23:59:49,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:59:49,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058371242] [2022-07-19 23:59:49,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:59:49,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:59:49,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:49,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:59:49,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:49,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:59:49,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:49,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 23:59:49,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:49,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 23:59:49,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:49,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 23:59:49,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:49,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 23:59:49,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:49,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:59:49,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:49,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 23:59:49,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:49,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-19 23:59:49,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:49,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:59:49,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:49,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 23:59:49,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:49,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-19 23:59:49,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:49,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-19 23:59:49,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:49,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-19 23:59:49,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:59:49,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058371242] [2022-07-19 23:59:49,321 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-07-19 23:59:49,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881286239] [2022-07-19 23:59:49,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:59:49,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:59:49,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:59:49,323 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) [2022-07-19 23:59:49,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 23:59:49,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:49,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 2441 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 23:59:49,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:59:49,929 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-19 23:59:49,930 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:59:49,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881286239] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:59:49,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:59:49,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 23:59:49,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083710298] [2022-07-19 23:59:49,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:59:49,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 23:59:49,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:59:49,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 23:59:49,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-19 23:59:49,932 INFO L87 Difference]: Start difference. First operand 1388 states and 1991 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-19 23:59:50,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:59:50,056 INFO L93 Difference]: Finished difference Result 2843 states and 4064 transitions. [2022-07-19 23:59:50,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 23:59:50,056 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 159 [2022-07-19 23:59:50,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:59:50,063 INFO L225 Difference]: With dead ends: 2843 [2022-07-19 23:59:50,063 INFO L226 Difference]: Without dead ends: 1479 [2022-07-19 23:59:50,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-19 23:59:50,069 INFO L413 NwaCegarLoop]: 1926 mSDtfsCounter, 281 mSDsluCounter, 1698 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 3624 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 23:59:50,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 3624 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 23:59:50,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1479 states. [2022-07-19 23:59:50,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1479 to 1470. [2022-07-19 23:59:50,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1114 states have (on average 1.3940754039497307) internal successors, (1553), 1125 states have internal predecessors, (1553), 265 states have call successors, (265), 91 states have call predecessors, (265), 90 states have return successors, (264), 260 states have call predecessors, (264), 264 states have call successors, (264) [2022-07-19 23:59:50,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 2082 transitions. [2022-07-19 23:59:50,109 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 2082 transitions. Word has length 159 [2022-07-19 23:59:50,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:59:50,109 INFO L495 AbstractCegarLoop]: Abstraction has 1470 states and 2082 transitions. [2022-07-19 23:59:50,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-19 23:59:50,109 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 2082 transitions. [2022-07-19 23:59:50,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-07-19 23:59:50,114 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:59:50,114 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:59:50,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 23:59:50,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:59:50,337 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:59:50,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:59:50,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1257341609, now seen corresponding path program 1 times [2022-07-19 23:59:50,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:59:50,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764524653] [2022-07-19 23:59:50,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:59:50,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:59:50,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:50,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:59:50,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:50,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:59:50,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:50,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 23:59:50,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:50,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 23:59:50,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:50,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 23:59:50,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:50,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 23:59:50,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:50,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 23:59:50,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:50,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:59:50,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:50,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-19 23:59:50,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:50,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-19 23:59:50,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:50,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:59:50,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:50,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-19 23:59:50,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:50,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-19 23:59:50,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:50,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-19 23:59:50,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:50,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-19 23:59:50,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:59:50,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764524653] [2022-07-19 23:59:50,571 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-07-19 23:59:50,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700395937] [2022-07-19 23:59:50,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:59:50,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:59:50,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:59:50,573 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) [2022-07-19 23:59:50,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 23:59:51,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:51,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 2534 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 23:59:51,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:59:51,202 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 23:59:51,210 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:59:51,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700395937] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:59:51,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:59:51,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 23:59:51,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016784180] [2022-07-19 23:59:51,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:59:51,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 23:59:51,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:59:51,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 23:59:51,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-19 23:59:51,213 INFO L87 Difference]: Start difference. First operand 1470 states and 2082 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-19 23:59:51,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:59:51,310 INFO L93 Difference]: Finished difference Result 3144 states and 4446 transitions. [2022-07-19 23:59:51,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 23:59:51,311 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 175 [2022-07-19 23:59:51,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:59:51,318 INFO L225 Difference]: With dead ends: 3144 [2022-07-19 23:59:51,318 INFO L226 Difference]: Without dead ends: 1698 [2022-07-19 23:59:51,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-19 23:59:51,324 INFO L413 NwaCegarLoop]: 2203 mSDtfsCounter, 341 mSDsluCounter, 4053 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 6256 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 23:59:51,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 6256 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 23:59:51,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1698 states. [2022-07-19 23:59:51,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1698 to 1472. [2022-07-19 23:59:51,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 1116 states have (on average 1.3933691756272402) internal successors, (1555), 1127 states have internal predecessors, (1555), 265 states have call successors, (265), 91 states have call predecessors, (265), 90 states have return successors, (264), 260 states have call predecessors, (264), 264 states have call successors, (264) [2022-07-19 23:59:51,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 2084 transitions. [2022-07-19 23:59:51,369 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 2084 transitions. Word has length 175 [2022-07-19 23:59:51,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:59:51,370 INFO L495 AbstractCegarLoop]: Abstraction has 1472 states and 2084 transitions. [2022-07-19 23:59:51,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-19 23:59:51,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 2084 transitions. [2022-07-19 23:59:51,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-07-19 23:59:51,375 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:59:51,375 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:59:51,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 23:59:51,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:59:51,599 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:59:51,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:59:51,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1566318098, now seen corresponding path program 1 times [2022-07-19 23:59:51,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:59:51,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95517786] [2022-07-19 23:59:51,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:59:51,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:59:51,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:51,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:59:51,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:51,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:59:51,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:51,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 23:59:51,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:51,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 23:59:51,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:51,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 23:59:51,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:51,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 23:59:51,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:51,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:59:51,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:51,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 23:59:51,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:51,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-19 23:59:51,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:51,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:59:51,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:51,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-19 23:59:51,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:51,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-19 23:59:51,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:51,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:59:51,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:51,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-19 23:59:51,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:51,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 23:59:51,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:51,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-19 23:59:51,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:51,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-19 23:59:51,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:59:51,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95517786] [2022-07-19 23:59:51,834 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-07-19 23:59:51,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686684648] [2022-07-19 23:59:51,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:59:51,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:59:51,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:59:51,848 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) [2022-07-19 23:59:51,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 23:59:52,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:52,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 2567 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 23:59:52,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:59:52,543 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 23:59:52,544 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:59:52,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686684648] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:59:52,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:59:52,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 23:59:52,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459216471] [2022-07-19 23:59:52,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:59:52,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 23:59:52,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:59:52,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 23:59:52,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-19 23:59:52,546 INFO L87 Difference]: Start difference. First operand 1472 states and 2084 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-19 23:59:52,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:59:52,677 INFO L93 Difference]: Finished difference Result 4130 states and 5873 transitions. [2022-07-19 23:59:52,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 23:59:52,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 184 [2022-07-19 23:59:52,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:59:52,690 INFO L225 Difference]: With dead ends: 4130 [2022-07-19 23:59:52,690 INFO L226 Difference]: Without dead ends: 2682 [2022-07-19 23:59:52,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-19 23:59:52,698 INFO L413 NwaCegarLoop]: 2182 mSDtfsCounter, 1891 mSDsluCounter, 1692 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1891 SdHoareTripleChecker+Valid, 3874 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 23:59:52,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1891 Valid, 3874 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 23:59:52,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2682 states. [2022-07-19 23:59:52,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2682 to 2675. [2022-07-19 23:59:52,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2675 states, 2020 states have (on average 1.397029702970297) internal successors, (2822), 2042 states have internal predecessors, (2822), 492 states have call successors, (492), 163 states have call predecessors, (492), 162 states have return successors, (491), 483 states have call predecessors, (491), 491 states have call successors, (491) [2022-07-19 23:59:52,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2675 states to 2675 states and 3805 transitions. [2022-07-19 23:59:52,783 INFO L78 Accepts]: Start accepts. Automaton has 2675 states and 3805 transitions. Word has length 184 [2022-07-19 23:59:52,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:59:52,784 INFO L495 AbstractCegarLoop]: Abstraction has 2675 states and 3805 transitions. [2022-07-19 23:59:52,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-19 23:59:52,784 INFO L276 IsEmpty]: Start isEmpty. Operand 2675 states and 3805 transitions. [2022-07-19 23:59:52,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-07-19 23:59:52,792 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:59:52,792 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:59:52,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-19 23:59:53,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:59:53,008 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:59:53,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:59:53,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1054823839, now seen corresponding path program 1 times [2022-07-19 23:59:53,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:59:53,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884459415] [2022-07-19 23:59:53,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:59:53,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:59:53,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:53,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:59:53,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:53,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:59:53,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:53,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 23:59:53,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:53,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 23:59:53,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:53,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 23:59:53,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:53,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 23:59:53,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:53,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:59:53,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:53,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 23:59:53,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:53,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 23:59:53,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:53,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:59:53,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:53,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-19 23:59:53,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:53,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-19 23:59:53,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:53,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:59:53,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:53,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-19 23:59:53,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:53,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-19 23:59:53,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:53,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-19 23:59:53,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:53,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-19 23:59:53,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:59:53,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884459415] [2022-07-19 23:59:53,292 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-07-19 23:59:53,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957029101] [2022-07-19 23:59:53,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:59:53,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:59:53,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:59:53,294 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) [2022-07-19 23:59:53,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-19 23:59:53,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:53,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 2568 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 23:59:53,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:59:53,889 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 23:59:53,890 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:59:53,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957029101] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:59:53,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:59:53,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 23:59:53,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873132132] [2022-07-19 23:59:53,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:59:53,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 23:59:53,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:59:53,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 23:59:53,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-19 23:59:53,892 INFO L87 Difference]: Start difference. First operand 2675 states and 3805 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-19 23:59:53,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:59:54,000 INFO L93 Difference]: Finished difference Result 5555 states and 7893 transitions. [2022-07-19 23:59:54,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 23:59:54,001 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 185 [2022-07-19 23:59:54,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:59:54,011 INFO L225 Difference]: With dead ends: 5555 [2022-07-19 23:59:54,011 INFO L226 Difference]: Without dead ends: 2904 [2022-07-19 23:59:54,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-19 23:59:54,020 INFO L413 NwaCegarLoop]: 2203 mSDtfsCounter, 341 mSDsluCounter, 4053 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 6256 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 23:59:54,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 6256 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 23:59:54,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2904 states. [2022-07-19 23:59:54,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2904 to 2675. [2022-07-19 23:59:54,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2675 states, 2020 states have (on average 1.397029702970297) internal successors, (2822), 2042 states have internal predecessors, (2822), 492 states have call successors, (492), 163 states have call predecessors, (492), 162 states have return successors, (491), 483 states have call predecessors, (491), 491 states have call successors, (491) [2022-07-19 23:59:54,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2675 states to 2675 states and 3805 transitions. [2022-07-19 23:59:54,127 INFO L78 Accepts]: Start accepts. Automaton has 2675 states and 3805 transitions. Word has length 185 [2022-07-19 23:59:54,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:59:54,128 INFO L495 AbstractCegarLoop]: Abstraction has 2675 states and 3805 transitions. [2022-07-19 23:59:54,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-19 23:59:54,128 INFO L276 IsEmpty]: Start isEmpty. Operand 2675 states and 3805 transitions. [2022-07-19 23:59:54,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-07-19 23:59:54,135 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:59:54,135 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:59:54,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-19 23:59:54,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:59:54,356 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:59:54,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:59:54,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1974703137, now seen corresponding path program 1 times [2022-07-19 23:59:54,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:59:54,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895090289] [2022-07-19 23:59:54,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:59:54,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:59:54,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:54,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:59:54,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:54,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:59:54,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:54,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 23:59:54,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:54,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 23:59:54,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:54,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 23:59:54,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:54,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 23:59:54,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:54,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:59:54,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:54,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-19 23:59:54,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:54,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:59:54,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:54,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 23:59:54,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:54,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:59:54,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:54,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-19 23:59:54,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:54,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-19 23:59:54,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:54,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-19 23:59:54,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:54,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-19 23:59:54,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:54,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:59:54,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:54,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-19 23:59:54,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:54,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-19 23:59:54,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:54,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:59:54,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:54,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-19 23:59:54,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:54,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-07-19 23:59:54,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:54,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-07-19 23:59:54,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:54,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-07-19 23:59:54,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:59:54,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895090289] [2022-07-19 23:59:54,577 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-07-19 23:59:54,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585562242] [2022-07-19 23:59:54,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:59:54,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:59:54,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:59:54,579 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) [2022-07-19 23:59:54,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-19 23:59:55,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:55,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 2814 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 23:59:55,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:59:55,196 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-19 23:59:55,196 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:59:55,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585562242] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:59:55,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:59:55,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 23:59:55,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025225359] [2022-07-19 23:59:55,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:59:55,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 23:59:55,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:59:55,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 23:59:55,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-07-19 23:59:55,198 INFO L87 Difference]: Start difference. First operand 2675 states and 3805 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-19 23:59:55,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:59:55,256 INFO L93 Difference]: Finished difference Result 5327 states and 7585 transitions. [2022-07-19 23:59:55,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 23:59:55,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 228 [2022-07-19 23:59:55,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:59:55,267 INFO L225 Difference]: With dead ends: 5327 [2022-07-19 23:59:55,267 INFO L226 Difference]: Without dead ends: 2676 [2022-07-19 23:59:55,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-07-19 23:59:55,276 INFO L413 NwaCegarLoop]: 1921 mSDtfsCounter, 0 mSDsluCounter, 1916 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3837 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 23:59:55,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3837 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 23:59:55,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2676 states. [2022-07-19 23:59:55,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2676 to 2676. [2022-07-19 23:59:55,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2676 states, 2021 states have (on average 1.396833250865908) internal successors, (2823), 2043 states have internal predecessors, (2823), 492 states have call successors, (492), 163 states have call predecessors, (492), 162 states have return successors, (491), 483 states have call predecessors, (491), 491 states have call successors, (491) [2022-07-19 23:59:55,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2676 states to 2676 states and 3806 transitions. [2022-07-19 23:59:55,345 INFO L78 Accepts]: Start accepts. Automaton has 2676 states and 3806 transitions. Word has length 228 [2022-07-19 23:59:55,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:59:55,345 INFO L495 AbstractCegarLoop]: Abstraction has 2676 states and 3806 transitions. [2022-07-19 23:59:55,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-19 23:59:55,345 INFO L276 IsEmpty]: Start isEmpty. Operand 2676 states and 3806 transitions. [2022-07-19 23:59:55,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-07-19 23:59:55,352 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:59:55,352 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:59:55,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-19 23:59:55,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:59:55,575 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:59:55,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:59:55,575 INFO L85 PathProgramCache]: Analyzing trace with hash -161180065, now seen corresponding path program 1 times [2022-07-19 23:59:55,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:59:55,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751473761] [2022-07-19 23:59:55,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:59:55,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:59:55,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:55,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:59:55,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:55,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:59:55,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:55,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 23:59:55,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:55,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 23:59:55,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:55,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 23:59:55,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:55,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 23:59:55,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:55,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:59:55,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:55,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-19 23:59:55,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:55,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:59:55,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:55,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 23:59:55,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:55,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:59:55,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:55,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-19 23:59:55,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:55,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-19 23:59:55,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:55,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-19 23:59:55,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:55,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-19 23:59:55,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:55,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:59:55,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:55,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-19 23:59:55,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:55,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-19 23:59:55,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:55,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:59:55,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:55,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-19 23:59:55,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:55,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-07-19 23:59:55,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:55,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-07-19 23:59:55,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:55,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-07-19 23:59:55,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:59:55,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751473761] [2022-07-19 23:59:55,827 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-07-19 23:59:55,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463096580] [2022-07-19 23:59:55,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:59:55,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:59:55,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:59:55,831 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) [2022-07-19 23:59:55,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-19 23:59:56,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:56,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 2817 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 23:59:56,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:59:56,577 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-19 23:59:56,577 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:59:56,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463096580] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:59:56,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:59:56,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 23:59:56,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984358633] [2022-07-19 23:59:56,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:59:56,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 23:59:56,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:59:56,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 23:59:56,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-07-19 23:59:56,579 INFO L87 Difference]: Start difference. First operand 2676 states and 3806 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 3 states have internal predecessors, (153), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-19 23:59:56,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:59:56,664 INFO L93 Difference]: Finished difference Result 5328 states and 7585 transitions. [2022-07-19 23:59:56,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 23:59:56,665 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 3 states have internal predecessors, (153), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 228 [2022-07-19 23:59:56,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:59:56,676 INFO L225 Difference]: With dead ends: 5328 [2022-07-19 23:59:56,676 INFO L226 Difference]: Without dead ends: 2676 [2022-07-19 23:59:56,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-07-19 23:59:56,685 INFO L413 NwaCegarLoop]: 1917 mSDtfsCounter, 1839 mSDsluCounter, 1914 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1839 SdHoareTripleChecker+Valid, 3831 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 23:59:56,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1839 Valid, 3831 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 23:59:56,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2676 states. [2022-07-19 23:59:56,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2676 to 2676. [2022-07-19 23:59:56,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2676 states, 2021 states have (on average 1.396338446313706) internal successors, (2822), 2043 states have internal predecessors, (2822), 492 states have call successors, (492), 163 states have call predecessors, (492), 162 states have return successors, (491), 483 states have call predecessors, (491), 491 states have call successors, (491) [2022-07-19 23:59:56,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2676 states to 2676 states and 3805 transitions. [2022-07-19 23:59:56,771 INFO L78 Accepts]: Start accepts. Automaton has 2676 states and 3805 transitions. Word has length 228 [2022-07-19 23:59:56,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:59:56,772 INFO L495 AbstractCegarLoop]: Abstraction has 2676 states and 3805 transitions. [2022-07-19 23:59:56,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 3 states have internal predecessors, (153), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-19 23:59:56,773 INFO L276 IsEmpty]: Start isEmpty. Operand 2676 states and 3805 transitions. [2022-07-19 23:59:56,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-07-19 23:59:56,780 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:59:56,780 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:59:56,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-19 23:59:56,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:59:56,994 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:59:56,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:59:56,994 INFO L85 PathProgramCache]: Analyzing trace with hash 256708637, now seen corresponding path program 1 times [2022-07-19 23:59:56,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:59:56,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189764228] [2022-07-19 23:59:56,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:59:56,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:59:57,065 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 23:59:57,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1708691958] [2022-07-19 23:59:57,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:59:57,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:59:57,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:59:57,067 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) [2022-07-19 23:59:57,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-19 23:59:57,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:57,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 2820 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-19 23:59:57,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:59:57,728 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-19 23:59:57,728 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:59:57,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:59:57,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189764228] [2022-07-19 23:59:57,729 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 23:59:57,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708691958] [2022-07-19 23:59:57,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708691958] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:59:57,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:59:57,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 23:59:57,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450879293] [2022-07-19 23:59:57,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:59:57,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 23:59:57,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:59:57,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 23:59:57,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 23:59:57,731 INFO L87 Difference]: Start difference. First operand 2676 states and 3805 transitions. Second operand has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 3 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-07-19 23:59:58,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:59:58,003 INFO L93 Difference]: Finished difference Result 5775 states and 8228 transitions. [2022-07-19 23:59:58,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 23:59:58,004 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 3 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 228 [2022-07-19 23:59:58,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:59:58,015 INFO L225 Difference]: With dead ends: 5775 [2022-07-19 23:59:58,015 INFO L226 Difference]: Without dead ends: 3123 [2022-07-19 23:59:58,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-19 23:59:58,023 INFO L413 NwaCegarLoop]: 2233 mSDtfsCounter, 681 mSDsluCounter, 8628 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 10861 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 23:59:58,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [697 Valid, 10861 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 23:59:58,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3123 states. [2022-07-19 23:59:58,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3123 to 2682. [2022-07-19 23:59:58,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2682 states, 2025 states have (on average 1.3955555555555557) internal successors, (2826), 2047 states have internal predecessors, (2826), 494 states have call successors, (494), 163 states have call predecessors, (494), 162 states have return successors, (493), 485 states have call predecessors, (493), 493 states have call successors, (493) [2022-07-19 23:59:58,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2682 states to 2682 states and 3813 transitions. [2022-07-19 23:59:58,107 INFO L78 Accepts]: Start accepts. Automaton has 2682 states and 3813 transitions. Word has length 228 [2022-07-19 23:59:58,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:59:58,107 INFO L495 AbstractCegarLoop]: Abstraction has 2682 states and 3813 transitions. [2022-07-19 23:59:58,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 3 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-07-19 23:59:58,108 INFO L276 IsEmpty]: Start isEmpty. Operand 2682 states and 3813 transitions. [2022-07-19 23:59:58,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-07-19 23:59:58,115 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:59:58,115 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:59:58,151 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-07-19 23:59:58,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-19 23:59:58,352 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:59:58,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:59:58,352 INFO L85 PathProgramCache]: Analyzing trace with hash -967426800, now seen corresponding path program 1 times [2022-07-19 23:59:58,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:59:58,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129571689] [2022-07-19 23:59:58,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:59:58,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:59:58,430 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 23:59:58,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1853564509] [2022-07-19 23:59:58,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:59:58,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:59:58,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:59:58,431 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) [2022-07-19 23:59:58,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-19 23:59:59,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:59:59,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 2860 conjuncts, 44 conjunts are in the unsatisfiable core [2022-07-19 23:59:59,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:59:59,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 23:59:59,577 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-07-19 23:59:59,732 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-07-19 23:59:59,757 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 14 proven. 23 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-19 23:59:59,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 23:59:59,860 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 34 [2022-07-19 23:59:59,865 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2022-07-20 00:00:00,230 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-07-20 00:00:00,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:00:00,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129571689] [2022-07-20 00:00:00,230 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-20 00:00:00,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853564509] [2022-07-20 00:00:00,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853564509] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 00:00:00,230 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 00:00:00,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15] total 33 [2022-07-20 00:00:00,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989621793] [2022-07-20 00:00:00,231 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 00:00:00,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-07-20 00:00:00,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:00:00,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-07-20 00:00:00,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=939, Unknown=0, NotChecked=0, Total=1056 [2022-07-20 00:00:00,232 INFO L87 Difference]: Start difference. First operand 2682 states and 3813 transitions. Second operand has 33 states, 33 states have (on average 8.727272727272727) internal successors, (288), 28 states have internal predecessors, (288), 16 states have call successors, (54), 6 states have call predecessors, (54), 6 states have return successors, (50), 18 states have call predecessors, (50), 15 states have call successors, (50) [2022-07-20 00:00:05,975 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:00:17,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:00:17,113 INFO L93 Difference]: Finished difference Result 7274 states and 10609 transitions. [2022-07-20 00:00:17,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-20 00:00:17,114 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 8.727272727272727) internal successors, (288), 28 states have internal predecessors, (288), 16 states have call successors, (54), 6 states have call predecessors, (54), 6 states have return successors, (50), 18 states have call predecessors, (50), 15 states have call successors, (50) Word has length 232 [2022-07-20 00:00:17,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:00:17,142 INFO L225 Difference]: With dead ends: 7274 [2022-07-20 00:00:17,152 INFO L226 Difference]: Without dead ends: 4616 [2022-07-20 00:00:17,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 430 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=262, Invalid=1718, Unknown=0, NotChecked=0, Total=1980 [2022-07-20 00:00:17,175 INFO L413 NwaCegarLoop]: 1923 mSDtfsCounter, 7345 mSDsluCounter, 25759 mSDsCounter, 0 mSdLazyCounter, 9057 mSolverCounterSat, 1513 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7387 SdHoareTripleChecker+Valid, 27682 SdHoareTripleChecker+Invalid, 11887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1513 IncrementalHoareTripleChecker+Valid, 9057 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 1316 IncrementalHoareTripleChecker+Unchecked, 16.0s IncrementalHoareTripleChecker+Time [2022-07-20 00:00:17,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7387 Valid, 27682 Invalid, 11887 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1513 Valid, 9057 Invalid, 1 Unknown, 1316 Unchecked, 16.0s Time] [2022-07-20 00:00:17,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4616 states. [2022-07-20 00:00:17,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4616 to 4075. [2022-07-20 00:00:17,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4075 states, 3120 states have (on average 1.426923076923077) internal successors, (4452), 3160 states have internal predecessors, (4452), 765 states have call successors, (765), 189 states have call predecessors, (765), 189 states have return successors, (766), 747 states have call predecessors, (766), 764 states have call successors, (766) [2022-07-20 00:00:17,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4075 states to 4075 states and 5983 transitions. [2022-07-20 00:00:17,390 INFO L78 Accepts]: Start accepts. Automaton has 4075 states and 5983 transitions. Word has length 232 [2022-07-20 00:00:17,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:00:17,390 INFO L495 AbstractCegarLoop]: Abstraction has 4075 states and 5983 transitions. [2022-07-20 00:00:17,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 8.727272727272727) internal successors, (288), 28 states have internal predecessors, (288), 16 states have call successors, (54), 6 states have call predecessors, (54), 6 states have return successors, (50), 18 states have call predecessors, (50), 15 states have call successors, (50) [2022-07-20 00:00:17,390 INFO L276 IsEmpty]: Start isEmpty. Operand 4075 states and 5983 transitions. [2022-07-20 00:00:17,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-07-20 00:00:17,402 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:00:17,402 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:00:17,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-20 00:00:17,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 00:00:17,616 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:00:17,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:00:17,616 INFO L85 PathProgramCache]: Analyzing trace with hash -28582180, now seen corresponding path program 1 times [2022-07-20 00:00:17,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:00:17,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945184680] [2022-07-20 00:00:17,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:00:17,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:00:17,676 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-20 00:00:17,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1369966033] [2022-07-20 00:00:17,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:00:17,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 00:00:17,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 00:00:17,678 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) [2022-07-20 00:00:17,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-20 00:00:18,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:00:18,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 2902 conjuncts, 70 conjunts are in the unsatisfiable core [2022-07-20 00:00:18,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 00:00:18,383 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-07-20 00:00:23,004 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-07-20 00:00:23,021 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-07-20 00:00:23,207 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-07-20 00:00:23,268 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1661 (Array Int Int))) (= (store |c_old(#memory_int)| |c_usb_set_intfdata_#in~intf#1.base| v_ArrVal_1661) |c_#memory_int|)) is different from true [2022-07-20 00:00:23,287 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-07-20 00:00:23,933 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-07-20 00:00:24,006 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 33 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-20 00:00:24,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 00:00:25,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:00:25,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945184680] [2022-07-20 00:00:25,025 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-20 00:00:25,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369966033] [2022-07-20 00:00:25,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369966033] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 00:00:25,025 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-20 00:00:25,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2022-07-20 00:00:25,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935958624] [2022-07-20 00:00:25,025 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-20 00:00:25,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-20 00:00:25,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:00:25,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-20 00:00:25,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=437, Unknown=4, NotChecked=42, Total=552 [2022-07-20 00:00:25,026 INFO L87 Difference]: Start difference. First operand 4075 states and 5983 transitions. Second operand has 22 states, 22 states have (on average 7.681818181818182) internal successors, (169), 18 states have internal predecessors, (169), 9 states have call successors, (31), 5 states have call predecessors, (31), 8 states have return successors, (28), 12 states have call predecessors, (28), 9 states have call successors, (28) [2022-07-20 00:00:41,439 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:00:43,612 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:00:48,516 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:00:52,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:00:52,200 INFO L93 Difference]: Finished difference Result 8333 states and 12360 transitions. [2022-07-20 00:00:52,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-20 00:00:52,201 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 7.681818181818182) internal successors, (169), 18 states have internal predecessors, (169), 9 states have call successors, (31), 5 states have call predecessors, (31), 8 states have return successors, (28), 12 states have call predecessors, (28), 9 states have call successors, (28) Word has length 239 [2022-07-20 00:00:52,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:00:52,271 INFO L225 Difference]: With dead ends: 8333 [2022-07-20 00:00:52,271 INFO L226 Difference]: Without dead ends: 5675 [2022-07-20 00:00:52,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 285 SyntacticMatches, 14 SemanticMatches, 34 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 15.7s TimeCoverageRelationStatistics Valid=152, Invalid=1034, Unknown=8, NotChecked=66, Total=1260 [2022-07-20 00:00:52,288 INFO L413 NwaCegarLoop]: 2493 mSDtfsCounter, 1466 mSDsluCounter, 21197 mSDsCounter, 0 mSdLazyCounter, 9247 mSolverCounterSat, 418 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1612 SdHoareTripleChecker+Valid, 23690 SdHoareTripleChecker+Invalid, 16912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 9247 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 7244 IncrementalHoareTripleChecker+Unchecked, 16.5s IncrementalHoareTripleChecker+Time [2022-07-20 00:00:52,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1612 Valid, 23690 Invalid, 16912 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [418 Valid, 9247 Invalid, 3 Unknown, 7244 Unchecked, 16.5s Time] [2022-07-20 00:00:52,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5675 states. [2022-07-20 00:00:52,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5675 to 4643. [2022-07-20 00:00:52,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4643 states, 3591 states have (on average 1.434976329713172) internal successors, (5153), 3640 states have internal predecessors, (5153), 842 states have call successors, (842), 204 states have call predecessors, (842), 209 states have return successors, (882), 821 states have call predecessors, (882), 841 states have call successors, (882) [2022-07-20 00:00:52,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4643 states to 4643 states and 6877 transitions. [2022-07-20 00:00:52,637 INFO L78 Accepts]: Start accepts. Automaton has 4643 states and 6877 transitions. Word has length 239 [2022-07-20 00:00:52,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:00:52,652 INFO L495 AbstractCegarLoop]: Abstraction has 4643 states and 6877 transitions. [2022-07-20 00:00:52,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 7.681818181818182) internal successors, (169), 18 states have internal predecessors, (169), 9 states have call successors, (31), 5 states have call predecessors, (31), 8 states have return successors, (28), 12 states have call predecessors, (28), 9 states have call successors, (28) [2022-07-20 00:00:52,652 INFO L276 IsEmpty]: Start isEmpty. Operand 4643 states and 6877 transitions. [2022-07-20 00:00:52,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2022-07-20 00:00:52,680 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:00:52,681 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:00:52,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-20 00:00:52,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-20 00:00:52,881 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:00:52,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:00:52,882 INFO L85 PathProgramCache]: Analyzing trace with hash 258419187, now seen corresponding path program 1 times [2022-07-20 00:00:52,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:00:52,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183564418] [2022-07-20 00:00:52,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:00:52,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:00:53,011 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-20 00:00:53,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [610989235] [2022-07-20 00:00:53,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:00:53,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 00:00:53,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 00:00:53,016 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) [2022-07-20 00:00:53,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-20 00:00:53,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:00:53,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 2946 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 00:00:54,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 00:00:54,039 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-20 00:00:54,039 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 00:00:54,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:00:54,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183564418] [2022-07-20 00:00:54,040 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-20 00:00:54,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610989235] [2022-07-20 00:00:54,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610989235] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:00:54,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:00:54,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 00:00:54,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770923900] [2022-07-20 00:00:54,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:00:54,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 00:00:54,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:00:54,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 00:00:54,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 00:00:54,042 INFO L87 Difference]: Start difference. First operand 4643 states and 6877 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-20 00:00:54,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:00:54,417 INFO L93 Difference]: Finished difference Result 8745 states and 12933 transitions. [2022-07-20 00:00:54,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 00:00:54,418 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) Word has length 247 [2022-07-20 00:00:54,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:00:54,470 INFO L225 Difference]: With dead ends: 8745 [2022-07-20 00:00:54,471 INFO L226 Difference]: Without dead ends: 4677 [2022-07-20 00:00:54,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 00:00:54,507 INFO L413 NwaCegarLoop]: 1922 mSDtfsCounter, 3 mSDsluCounter, 5758 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 7680 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 00:00:54,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 7680 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 00:00:54,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4677 states. [2022-07-20 00:00:54,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4677 to 4659. [2022-07-20 00:00:54,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4659 states, 3604 states have (on average 1.4334073251942285) internal successors, (5166), 3650 states have internal predecessors, (5166), 843 states have call successors, (843), 204 states have call predecessors, (843), 211 states have return successors, (893), 827 states have call predecessors, (893), 842 states have call successors, (893) [2022-07-20 00:00:54,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4659 states to 4659 states and 6902 transitions. [2022-07-20 00:00:54,844 INFO L78 Accepts]: Start accepts. Automaton has 4659 states and 6902 transitions. Word has length 247 [2022-07-20 00:00:54,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:00:54,847 INFO L495 AbstractCegarLoop]: Abstraction has 4659 states and 6902 transitions. [2022-07-20 00:00:54,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-20 00:00:54,848 INFO L276 IsEmpty]: Start isEmpty. Operand 4659 states and 6902 transitions. [2022-07-20 00:00:54,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-07-20 00:00:54,899 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:00:54,899 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:00:54,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-20 00:00:55,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-20 00:00:55,117 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:00:55,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:00:55,118 INFO L85 PathProgramCache]: Analyzing trace with hash -2145298580, now seen corresponding path program 1 times [2022-07-20 00:00:55,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:00:55,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498702557] [2022-07-20 00:00:55,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:00:55,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:00:55,228 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-20 00:00:55,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [542370483] [2022-07-20 00:00:55,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:00:55,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 00:00:55,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 00:00:55,245 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) [2022-07-20 00:00:55,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-20 00:00:56,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:00:56,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 2917 conjuncts, 74 conjunts are in the unsatisfiable core [2022-07-20 00:00:56,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 00:00:56,122 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-07-20 00:01:02,415 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2055 (Array Int Int))) (= (store |c_old(#memory_int)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2055) |c_#memory_int|)) is different from true [2022-07-20 00:01:02,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 00:01:02,428 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-07-20 00:01:28,980 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-07-20 00:01:28,995 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-07-20 00:01:35,181 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-07-20 00:01:35,214 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2059 (Array Int Int))) (= (store |c_old(#memory_int)| |c_usb_set_intfdata_#in~intf#1.base| v_ArrVal_2059) |c_#memory_int|)) is different from true [2022-07-20 00:01:35,222 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-07-20 00:02:05,688 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-07-20 00:02:05,754 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 33 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 1 not checked. [2022-07-20 00:02:05,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 00:02:08,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:02:08,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498702557] [2022-07-20 00:02:08,335 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-20 00:02:08,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542370483] [2022-07-20 00:02:08,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542370483] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 00:02:08,335 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-20 00:02:08,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2022-07-20 00:02:08,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475227601] [2022-07-20 00:02:08,335 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-20 00:02:08,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-20 00:02:08,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:02:08,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-20 00:02:08,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=555, Unknown=20, NotChecked=98, Total=756 [2022-07-20 00:02:08,337 INFO L87 Difference]: Start difference. First operand 4659 states and 6902 transitions. Second operand has 26 states, 26 states have (on average 6.538461538461538) internal successors, (170), 22 states have internal predecessors, (170), 10 states have call successors, (31), 6 states have call predecessors, (31), 9 states have return successors, (28), 12 states have call predecessors, (28), 10 states have call successors, (28) [2022-07-20 00:02:46,438 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:02:48,584 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:02:50,737 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:02:52,883 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:02:55,041 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:03:10,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:03:10,127 INFO L93 Difference]: Finished difference Result 9584 states and 14336 transitions. [2022-07-20 00:03:10,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-07-20 00:03:10,127 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.538461538461538) internal successors, (170), 22 states have internal predecessors, (170), 10 states have call successors, (31), 6 states have call predecessors, (31), 9 states have return successors, (28), 12 states have call predecessors, (28), 10 states have call successors, (28) Word has length 240 [2022-07-20 00:03:10,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:03:10,180 INFO L225 Difference]: With dead ends: 9584 [2022-07-20 00:03:10,180 INFO L226 Difference]: Without dead ends: 6895 [2022-07-20 00:03:10,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 284 SyntacticMatches, 13 SemanticMatches, 41 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 109.7s TimeCoverageRelationStatistics Valid=179, Invalid=1432, Unknown=37, NotChecked=158, Total=1806 [2022-07-20 00:03:10,205 INFO L413 NwaCegarLoop]: 2612 mSDtfsCounter, 1732 mSDsluCounter, 22842 mSDsCounter, 0 mSdLazyCounter, 10161 mSolverCounterSat, 363 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1906 SdHoareTripleChecker+Valid, 25454 SdHoareTripleChecker+Invalid, 21334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 363 IncrementalHoareTripleChecker+Valid, 10161 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 10805 IncrementalHoareTripleChecker+Unchecked, 22.9s IncrementalHoareTripleChecker+Time [2022-07-20 00:03:10,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1906 Valid, 25454 Invalid, 21334 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [363 Valid, 10161 Invalid, 5 Unknown, 10805 Unchecked, 22.9s Time] [2022-07-20 00:03:10,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6895 states. [2022-07-20 00:03:10,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6895 to 5257. [2022-07-20 00:03:10,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5257 states, 4099 states have (on average 1.4423030007318858) internal successors, (5912), 4158 states have internal predecessors, (5912), 927 states have call successors, (927), 218 states have call predecessors, (927), 230 states have return successors, (1012), 904 states have call predecessors, (1012), 926 states have call successors, (1012) [2022-07-20 00:03:10,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5257 states to 5257 states and 7851 transitions. [2022-07-20 00:03:10,604 INFO L78 Accepts]: Start accepts. Automaton has 5257 states and 7851 transitions. Word has length 240 [2022-07-20 00:03:10,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:03:10,605 INFO L495 AbstractCegarLoop]: Abstraction has 5257 states and 7851 transitions. [2022-07-20 00:03:10,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.538461538461538) internal successors, (170), 22 states have internal predecessors, (170), 10 states have call successors, (31), 6 states have call predecessors, (31), 9 states have return successors, (28), 12 states have call predecessors, (28), 10 states have call successors, (28) [2022-07-20 00:03:10,605 INFO L276 IsEmpty]: Start isEmpty. Operand 5257 states and 7851 transitions. [2022-07-20 00:03:10,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2022-07-20 00:03:10,635 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:03:10,635 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:03:10,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-20 00:03:10,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-20 00:03:10,852 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:03:10,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:03:10,852 INFO L85 PathProgramCache]: Analyzing trace with hash -286806896, now seen corresponding path program 1 times [2022-07-20 00:03:10,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:03:10,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357567485] [2022-07-20 00:03:10,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:03:10,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:03:10,977 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-20 00:03:10,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1842589339] [2022-07-20 00:03:10,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:03:10,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 00:03:10,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 00:03:10,997 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) [2022-07-20 00:03:11,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-20 00:03:11,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:03:11,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 3009 conjuncts, 70 conjunts are in the unsatisfiable core [2022-07-20 00:03:11,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 00:03:11,863 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-07-20 00:03:16,236 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-07-20 00:03:16,249 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-07-20 00:03:16,348 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-07-20 00:03:16,381 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2254 (Array Int Int))) (= (store |c_old(#memory_int)| |c_usb_set_intfdata_#in~intf#1.base| v_ArrVal_2254) |c_#memory_int|)) is different from true [2022-07-20 00:03:16,389 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-07-20 00:03:16,728 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-07-20 00:03:16,770 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 36 proven. 6 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-20 00:03:16,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 00:03:17,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:03:17,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357567485] [2022-07-20 00:03:17,798 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-20 00:03:17,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842589339] [2022-07-20 00:03:17,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842589339] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 00:03:17,798 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-20 00:03:17,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2022-07-20 00:03:17,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148892317] [2022-07-20 00:03:17,798 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-20 00:03:17,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-20 00:03:17,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:03:17,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-20 00:03:17,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=437, Unknown=4, NotChecked=42, Total=552 [2022-07-20 00:03:17,799 INFO L87 Difference]: Start difference. First operand 5257 states and 7851 transitions. Second operand has 22 states, 22 states have (on average 8.136363636363637) internal successors, (179), 18 states have internal predecessors, (179), 9 states have call successors, (34), 5 states have call predecessors, (34), 8 states have return successors, (31), 12 states have call predecessors, (31), 9 states have call successors, (31) [2022-07-20 00:03:35,147 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:03:37,310 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:03:39,466 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:03:44,615 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:03:50,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:03:50,202 INFO L93 Difference]: Finished difference Result 10037 states and 15040 transitions. [2022-07-20 00:03:50,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-20 00:03:50,203 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.136363636363637) internal successors, (179), 18 states have internal predecessors, (179), 9 states have call successors, (34), 5 states have call predecessors, (34), 8 states have return successors, (31), 12 states have call predecessors, (31), 9 states have call successors, (31) Word has length 257 [2022-07-20 00:03:50,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:03:50,275 INFO L225 Difference]: With dead ends: 10037 [2022-07-20 00:03:50,275 INFO L226 Difference]: Without dead ends: 7348 [2022-07-20 00:03:50,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 302 SyntacticMatches, 16 SemanticMatches, 37 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=172, Invalid=1230, Unknown=8, NotChecked=72, Total=1482 [2022-07-20 00:03:50,301 INFO L413 NwaCegarLoop]: 2530 mSDtfsCounter, 1599 mSDsluCounter, 22885 mSDsCounter, 0 mSdLazyCounter, 10583 mSolverCounterSat, 413 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1745 SdHoareTripleChecker+Valid, 25415 SdHoareTripleChecker+Invalid, 18580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 413 IncrementalHoareTripleChecker+Valid, 10583 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 7580 IncrementalHoareTripleChecker+Unchecked, 21.6s IncrementalHoareTripleChecker+Time [2022-07-20 00:03:50,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1745 Valid, 25415 Invalid, 18580 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [413 Valid, 10583 Invalid, 4 Unknown, 7580 Unchecked, 21.6s Time] [2022-07-20 00:03:50,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7348 states. [2022-07-20 00:03:50,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7348 to 6124. [2022-07-20 00:03:50,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6124 states, 4798 states have (on average 1.4485202167569822) internal successors, (6950), 4868 states have internal predecessors, (6950), 1063 states have call successors, (1063), 245 states have call predecessors, (1063), 262 states have return successors, (1197), 1036 states have call predecessors, (1197), 1062 states have call successors, (1197) [2022-07-20 00:03:50,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6124 states to 6124 states and 9210 transitions. [2022-07-20 00:03:50,844 INFO L78 Accepts]: Start accepts. Automaton has 6124 states and 9210 transitions. Word has length 257 [2022-07-20 00:03:50,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:03:50,844 INFO L495 AbstractCegarLoop]: Abstraction has 6124 states and 9210 transitions. [2022-07-20 00:03:50,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.136363636363637) internal successors, (179), 18 states have internal predecessors, (179), 9 states have call successors, (34), 5 states have call predecessors, (34), 8 states have return successors, (31), 12 states have call predecessors, (31), 9 states have call successors, (31) [2022-07-20 00:03:50,845 INFO L276 IsEmpty]: Start isEmpty. Operand 6124 states and 9210 transitions. [2022-07-20 00:03:50,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-07-20 00:03:50,874 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:03:50,874 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:03:50,935 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-07-20 00:03:51,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-20 00:03:51,075 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:03:51,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:03:51,076 INFO L85 PathProgramCache]: Analyzing trace with hash 955969756, now seen corresponding path program 2 times [2022-07-20 00:03:51,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:03:51,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722137222] [2022-07-20 00:03:51,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:03:51,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:03:51,187 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-20 00:03:51,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [776101215] [2022-07-20 00:03:51,188 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-20 00:03:51,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 00:03:51,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 00:03:51,192 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 00:03:51,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-20 00:03:52,253 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-20 00:03:52,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 00:03:52,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 2932 conjuncts, 28 conjunts are in the unsatisfiable core [2022-07-20 00:03:52,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 00:03:52,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 00:03:52,710 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-07-20 00:03:52,932 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-07-20 00:03:52,968 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-20 00:03:52,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 00:03:53,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:03:53,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722137222] [2022-07-20 00:03:53,335 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-20 00:03:53,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776101215] [2022-07-20 00:03:53,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776101215] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 00:03:53,335 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-20 00:03:53,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2022-07-20 00:03:53,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373775050] [2022-07-20 00:03:53,335 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-20 00:03:53,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-20 00:03:53,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:03:53,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-20 00:03:53,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2022-07-20 00:03:53,336 INFO L87 Difference]: Start difference. First operand 6124 states and 9210 transitions. Second operand has 17 states, 17 states have (on average 9.235294117647058) internal successors, (157), 15 states have internal predecessors, (157), 9 states have call successors, (30), 4 states have call predecessors, (30), 3 states have return successors, (27), 9 states have call predecessors, (27), 8 states have call successors, (27) [2022-07-20 00:04:01,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:04:01,419 INFO L93 Difference]: Finished difference Result 9040 states and 13407 transitions. [2022-07-20 00:04:01,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-20 00:04:01,421 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 9.235294117647058) internal successors, (157), 15 states have internal predecessors, (157), 9 states have call successors, (30), 4 states have call predecessors, (30), 3 states have return successors, (27), 9 states have call predecessors, (27), 8 states have call successors, (27) Word has length 241 [2022-07-20 00:04:01,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:04:01,468 INFO L225 Difference]: With dead ends: 9040 [2022-07-20 00:04:01,468 INFO L226 Difference]: Without dead ends: 6338 [2022-07-20 00:04:01,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 245 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=131, Invalid=739, Unknown=0, NotChecked=0, Total=870 [2022-07-20 00:04:01,492 INFO L413 NwaCegarLoop]: 2902 mSDtfsCounter, 2316 mSDsluCounter, 30020 mSDsCounter, 0 mSdLazyCounter, 3306 mSolverCounterSat, 411 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2338 SdHoareTripleChecker+Valid, 32922 SdHoareTripleChecker+Invalid, 4108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 411 IncrementalHoareTripleChecker+Valid, 3306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 391 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-07-20 00:04:01,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2338 Valid, 32922 Invalid, 4108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [411 Valid, 3306 Invalid, 0 Unknown, 391 Unchecked, 7.4s Time] [2022-07-20 00:04:01,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6338 states. [2022-07-20 00:04:01,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6338 to 6204. [2022-07-20 00:04:01,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6204 states, 4854 states have (on average 1.445405850844664) internal successors, (7016), 4928 states have internal predecessors, (7016), 1081 states have call successors, (1081), 249 states have call predecessors, (1081), 268 states have return successors, (1220), 1054 states have call predecessors, (1220), 1080 states have call successors, (1220) [2022-07-20 00:04:01,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6204 states to 6204 states and 9317 transitions. [2022-07-20 00:04:01,956 INFO L78 Accepts]: Start accepts. Automaton has 6204 states and 9317 transitions. Word has length 241 [2022-07-20 00:04:01,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:04:01,957 INFO L495 AbstractCegarLoop]: Abstraction has 6204 states and 9317 transitions. [2022-07-20 00:04:01,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 9.235294117647058) internal successors, (157), 15 states have internal predecessors, (157), 9 states have call successors, (30), 4 states have call predecessors, (30), 3 states have return successors, (27), 9 states have call predecessors, (27), 8 states have call successors, (27) [2022-07-20 00:04:01,958 INFO L276 IsEmpty]: Start isEmpty. Operand 6204 states and 9317 transitions. [2022-07-20 00:04:01,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2022-07-20 00:04:01,983 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:04:01,983 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:04:02,031 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-07-20 00:04:02,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 00:04:02,219 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:04:02,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:04:02,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1269001197, now seen corresponding path program 1 times [2022-07-20 00:04:02,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:04:02,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031785763] [2022-07-20 00:04:02,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:04:02,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:04:02,337 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-20 00:04:02,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1285875036] [2022-07-20 00:04:02,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:04:02,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 00:04:02,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 00:04:02,355 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 00:04:02,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-20 00:04:03,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat