./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pf.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pf.ko-main.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 65cc93bea37c503291576929a444106bffa9d5b7b84b8d294ee7e7120b60ffa5 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 15:36:21,305 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 15:36:21,307 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 15:36:21,339 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 15:36:21,339 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 15:36:21,342 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 15:36:21,343 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 15:36:21,346 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 15:36:21,348 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 15:36:21,351 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 15:36:21,352 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 15:36:21,355 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 15:36:21,355 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 15:36:21,357 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 15:36:21,359 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 15:36:21,362 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 15:36:21,362 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 15:36:21,363 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 15:36:21,365 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 15:36:21,369 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 15:36:21,370 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 15:36:21,371 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 15:36:21,372 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 15:36:21,373 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 15:36:21,378 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 15:36:21,378 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 15:36:21,378 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 15:36:21,388 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 15:36:21,389 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 15:36:21,389 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 15:36:21,389 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 15:36:21,390 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 15:36:21,391 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 15:36:21,391 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 15:36:21,392 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 15:36:21,392 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 15:36:21,393 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 15:36:21,393 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 15:36:21,393 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 15:36:21,394 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 15:36:21,395 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 15:36:21,398 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 15:36:21,426 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 15:36:21,426 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 15:36:21,427 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 15:36:21,427 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 15:36:21,429 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 15:36:21,429 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 15:36:21,429 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 15:36:21,429 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 15:36:21,429 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 15:36:21,430 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 15:36:21,430 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 15:36:21,430 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 15:36:21,430 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 15:36:21,431 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 15:36:21,431 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 15:36:21,431 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 15:36:21,431 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 15:36:21,431 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 15:36:21,431 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 15:36:21,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 15:36:21,432 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 15:36:21,432 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 15:36:21,432 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 15:36:21,432 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 15:36:21,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 15:36:21,432 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 15:36:21,432 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 15:36:21,433 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 15:36:21,433 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 15:36:21,433 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 65cc93bea37c503291576929a444106bffa9d5b7b84b8d294ee7e7120b60ffa5 [2021-11-05 15:36:21,660 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 15:36:21,674 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 15:36:21,676 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 15:36:21,677 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 15:36:21,678 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 15:36:21,679 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pf.ko-main.cil.out.i [2021-11-05 15:36:21,725 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/440f10def/0b9b939d40c247c5a2febb10a00181b2/FLAGce55de50a [2021-11-05 15:36:22,282 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 15:36:22,283 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pf.ko-main.cil.out.i [2021-11-05 15:36:22,304 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/440f10def/0b9b939d40c247c5a2febb10a00181b2/FLAGce55de50a [2021-11-05 15:36:22,750 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/440f10def/0b9b939d40c247c5a2febb10a00181b2 [2021-11-05 15:36:22,753 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 15:36:22,754 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 15:36:22,757 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 15:36:22,757 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 15:36:22,759 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 15:36:22,760 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 03:36:22" (1/1) ... [2021-11-05 15:36:22,761 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65318c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:36:22, skipping insertion in model container [2021-11-05 15:36:22,761 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 03:36:22" (1/1) ... [2021-11-05 15:36:22,766 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 15:36:22,840 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 15:36:23,484 WARN L228 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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pf.ko-main.cil.out.i[138616,138629] [2021-11-05 15:36:23,528 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 15:36:23,550 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 15:36:23,683 WARN L228 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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pf.ko-main.cil.out.i[138616,138629] [2021-11-05 15:36:23,697 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 15:36:23,734 INFO L208 MainTranslator]: Completed translation [2021-11-05 15:36:23,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:36:23 WrapperNode [2021-11-05 15:36:23,735 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 15:36:23,736 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 15:36:23,737 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 15:36:23,737 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 15:36:23,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:36:23" (1/1) ... [2021-11-05 15:36:23,796 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:36:23" (1/1) ... [2021-11-05 15:36:25,750 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 15:36:25,751 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 15:36:25,751 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 15:36:25,751 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 15:36:25,757 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:36:23" (1/1) ... [2021-11-05 15:36:25,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:36:23" (1/1) ... [2021-11-05 15:36:26,313 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:36:23" (1/1) ... [2021-11-05 15:36:26,327 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:36:23" (1/1) ... [2021-11-05 15:36:27,031 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:36:23" (1/1) ... [2021-11-05 15:36:27,157 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:36:23" (1/1) ... [2021-11-05 15:36:27,248 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:36:23" (1/1) ... [2021-11-05 15:36:27,654 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 15:36:27,656 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 15:36:27,656 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 15:36:27,656 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 15:36:27,657 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:36:23" (1/1) ... [2021-11-05 15:36:27,661 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 15:36:27,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 15:36:27,678 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-05 15:36:27,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-05 15:36:27,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-05 15:36:27,716 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 15:36:27,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 15:36:27,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 15:36:27,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 15:36:27,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 15:36:27,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 15:36:27,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 15:36:27,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 15:36:27,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 15:36:27,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 15:36:27,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 15:37:13,038 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 15:37:13,039 INFO L299 CfgBuilder]: Removed 14430 assume(true) statements. [2021-11-05 15:37:13,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 03:37:13 BoogieIcfgContainer [2021-11-05 15:37:13,048 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 15:37:13,049 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 15:37:13,050 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 15:37:13,051 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 15:37:13,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 03:36:22" (1/3) ... [2021-11-05 15:37:13,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66d54274 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 03:37:13, skipping insertion in model container [2021-11-05 15:37:13,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:36:23" (2/3) ... [2021-11-05 15:37:13,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66d54274 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 03:37:13, skipping insertion in model container [2021-11-05 15:37:13,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 03:37:13" (3/3) ... [2021-11-05 15:37:13,054 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pf.ko-main.cil.out.i [2021-11-05 15:37:13,057 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 15:37:13,057 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2021-11-05 15:37:13,114 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 15:37:13,120 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-05 15:37:13,120 INFO L340 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2021-11-05 15:37:13,243 INFO L276 IsEmpty]: Start isEmpty. Operand has 12100 states, 12086 states have (on average 1.2811517458216117) internal successors, (15484), 12099 states have internal predecessors, (15484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:37:13,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-05 15:37:13,249 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:37:13,250 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:37:13,250 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 15:37:13,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:37:13,256 INFO L85 PathProgramCache]: Analyzing trace with hash 14419201, now seen corresponding path program 1 times [2021-11-05 15:37:13,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:37:13,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145549576] [2021-11-05 15:37:13,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:37:13,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:37:13,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:37:13,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 15:37:13,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:37:13,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145549576] [2021-11-05 15:37:13,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145549576] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:37:13,609 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:37:13,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 15:37:13,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675195680] [2021-11-05 15:37:13,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:37:13,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 15:37:13,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:37:13,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 15:37:13,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:37:13,657 INFO L87 Difference]: Start difference. First operand has 12100 states, 12086 states have (on average 1.2811517458216117) internal successors, (15484), 12099 states have internal predecessors, (15484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:37:14,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:37:14,290 INFO L93 Difference]: Finished difference Result 33157 states and 42405 transitions. [2021-11-05 15:37:14,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 15:37:14,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-05 15:37:14,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:37:14,381 INFO L225 Difference]: With dead ends: 33157 [2021-11-05 15:37:14,382 INFO L226 Difference]: Without dead ends: 21052 [2021-11-05 15:37:14,417 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.85ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:37:14,421 INFO L933 BasicCegarLoop]: 14961 mSDtfsCounter, 11760 mSDsluCounter, 14930 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11760 SdHoareTripleChecker+Valid, 29891 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 45.46ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60.94ms IncrementalHoareTripleChecker+Time [2021-11-05 15:37:14,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11760 Valid, 29891 Invalid, 29 Unknown, 0 Unchecked, 45.46ms Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 60.94ms Time] [2021-11-05 15:37:14,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21052 states. [2021-11-05 15:37:15,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21052 to 21030. [2021-11-05 15:37:15,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21030 states, 21017 states have (on average 1.2699719274872723) internal successors, (26691), 21029 states have internal predecessors, (26691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:37:15,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21030 states to 21030 states and 26691 transitions. [2021-11-05 15:37:15,293 INFO L78 Accepts]: Start accepts. Automaton has 21030 states and 26691 transitions. Word has length 13 [2021-11-05 15:37:15,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:37:15,293 INFO L470 AbstractCegarLoop]: Abstraction has 21030 states and 26691 transitions. [2021-11-05 15:37:15,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:37:15,295 INFO L276 IsEmpty]: Start isEmpty. Operand 21030 states and 26691 transitions. [2021-11-05 15:37:15,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-05 15:37:15,297 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:37:15,297 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:37:15,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 15:37:15,298 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 15:37:15,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:37:15,299 INFO L85 PathProgramCache]: Analyzing trace with hash -63068992, now seen corresponding path program 1 times [2021-11-05 15:37:15,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:37:15,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130162698] [2021-11-05 15:37:15,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:37:15,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:37:15,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:37:15,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 15:37:15,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:37:15,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130162698] [2021-11-05 15:37:15,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130162698] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:37:15,409 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:37:15,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 15:37:15,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461928213] [2021-11-05 15:37:15,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:37:15,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 15:37:15,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:37:15,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 15:37:15,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:37:15,413 INFO L87 Difference]: Start difference. First operand 21030 states and 26691 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:37:16,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:37:16,793 INFO L93 Difference]: Finished difference Result 44609 states and 56620 transitions. [2021-11-05 15:37:16,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 15:37:16,793 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-05 15:37:16,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:37:16,861 INFO L225 Difference]: With dead ends: 44609 [2021-11-05 15:37:16,862 INFO L226 Difference]: Without dead ends: 23582 [2021-11-05 15:37:16,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.35ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:37:16,905 INFO L933 BasicCegarLoop]: 18150 mSDtfsCounter, 14920 mSDsluCounter, 3235 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 668.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14920 SdHoareTripleChecker+Valid, 21385 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.74ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 707.73ms IncrementalHoareTripleChecker+Time [2021-11-05 15:37:16,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14920 Valid, 21385 Invalid, 16 Unknown, 0 Unchecked, 26.74ms Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 707.73ms Time] [2021-11-05 15:37:16,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23582 states. [2021-11-05 15:37:17,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23582 to 23564. [2021-11-05 15:37:17,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23564 states, 23551 states have (on average 1.2703069933336164) internal successors, (29917), 23563 states have internal predecessors, (29917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:37:17,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23564 states to 23564 states and 29917 transitions. [2021-11-05 15:37:17,431 INFO L78 Accepts]: Start accepts. Automaton has 23564 states and 29917 transitions. Word has length 15 [2021-11-05 15:37:17,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:37:17,433 INFO L470 AbstractCegarLoop]: Abstraction has 23564 states and 29917 transitions. [2021-11-05 15:37:17,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:37:17,434 INFO L276 IsEmpty]: Start isEmpty. Operand 23564 states and 29917 transitions. [2021-11-05 15:37:17,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-05 15:37:17,434 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:37:17,435 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:37:17,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 15:37:17,437 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 15:37:17,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:37:17,438 INFO L85 PathProgramCache]: Analyzing trace with hash -523222962, now seen corresponding path program 1 times [2021-11-05 15:37:17,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:37:17,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174259667] [2021-11-05 15:37:17,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:37:17,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:37:17,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:37:17,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 15:37:17,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:37:17,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174259667] [2021-11-05 15:37:17,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174259667] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:37:17,588 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:37:17,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 15:37:17,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913288574] [2021-11-05 15:37:17,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:37:17,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 15:37:17,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:37:17,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 15:37:17,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:37:17,590 INFO L87 Difference]: Start difference. First operand 23564 states and 29917 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:37:18,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:37:18,019 INFO L93 Difference]: Finished difference Result 47125 states and 59831 transitions. [2021-11-05 15:37:18,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 15:37:18,020 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-05 15:37:18,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:37:18,068 INFO L225 Difference]: With dead ends: 47125 [2021-11-05 15:37:18,069 INFO L226 Difference]: Without dead ends: 23564 [2021-11-05 15:37:18,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.42ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:37:18,115 INFO L933 BasicCegarLoop]: 14954 mSDtfsCounter, 14945 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14945 SdHoareTripleChecker+Valid, 14954 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.67ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.05ms IncrementalHoareTripleChecker+Time [2021-11-05 15:37:18,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14945 Valid, 14954 Invalid, 1 Unknown, 0 Unchecked, 17.67ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.05ms Time] [2021-11-05 15:37:18,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23564 states. [2021-11-05 15:37:18,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23564 to 23564. [2021-11-05 15:37:18,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23564 states, 23551 states have (on average 1.2702220712496284) internal successors, (29915), 23563 states have internal predecessors, (29915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:37:18,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23564 states to 23564 states and 29915 transitions. [2021-11-05 15:37:18,820 INFO L78 Accepts]: Start accepts. Automaton has 23564 states and 29915 transitions. Word has length 16 [2021-11-05 15:37:18,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:37:18,820 INFO L470 AbstractCegarLoop]: Abstraction has 23564 states and 29915 transitions. [2021-11-05 15:37:18,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:37:18,820 INFO L276 IsEmpty]: Start isEmpty. Operand 23564 states and 29915 transitions. [2021-11-05 15:37:18,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-05 15:37:18,824 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:37:18,824 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:37:18,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 15:37:18,825 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 15:37:18,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:37:18,826 INFO L85 PathProgramCache]: Analyzing trace with hash 842125499, now seen corresponding path program 1 times [2021-11-05 15:37:18,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:37:18,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566133655] [2021-11-05 15:37:18,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:37:18,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:37:18,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:37:18,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 15:37:18,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:37:18,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566133655] [2021-11-05 15:37:18,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566133655] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:37:18,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:37:18,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 15:37:18,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243108611] [2021-11-05 15:37:18,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:37:18,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 15:37:18,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:37:18,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 15:37:18,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:37:18,912 INFO L87 Difference]: Start difference. First operand 23564 states and 29915 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:37:19,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:37:19,623 INFO L93 Difference]: Finished difference Result 47141 states and 59851 transitions. [2021-11-05 15:37:19,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 15:37:19,624 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-05 15:37:19,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:37:19,670 INFO L225 Difference]: With dead ends: 47141 [2021-11-05 15:37:19,671 INFO L226 Difference]: Without dead ends: 23580 [2021-11-05 15:37:19,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.41ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:37:19,721 INFO L933 BasicCegarLoop]: 14951 mSDtfsCounter, 10 mSDsluCounter, 14949 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 179.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 29900 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.00ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 186.83ms IncrementalHoareTripleChecker+Time [2021-11-05 15:37:19,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 29900 Invalid, 9 Unknown, 0 Unchecked, 17.00ms Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 186.83ms Time] [2021-11-05 15:37:19,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23580 states. [2021-11-05 15:37:20,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23580 to 23566. [2021-11-05 15:37:20,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23566 states, 23553 states have (on average 1.2701991253768097) internal successors, (29917), 23565 states have internal predecessors, (29917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:37:20,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23566 states to 23566 states and 29917 transitions. [2021-11-05 15:37:20,457 INFO L78 Accepts]: Start accepts. Automaton has 23566 states and 29917 transitions. Word has length 23 [2021-11-05 15:37:20,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:37:20,457 INFO L470 AbstractCegarLoop]: Abstraction has 23566 states and 29917 transitions. [2021-11-05 15:37:20,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:37:20,457 INFO L276 IsEmpty]: Start isEmpty. Operand 23566 states and 29917 transitions. [2021-11-05 15:37:20,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-05 15:37:20,459 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:37:20,459 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:37:20,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 15:37:20,459 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 15:37:20,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:37:20,460 INFO L85 PathProgramCache]: Analyzing trace with hash 17501300, now seen corresponding path program 1 times [2021-11-05 15:37:20,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:37:20,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617524912] [2021-11-05 15:37:20,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:37:20,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:37:20,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:37:20,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 15:37:20,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:37:20,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617524912] [2021-11-05 15:37:20,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617524912] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 15:37:20,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843028991] [2021-11-05 15:37:20,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:37:20,544 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 15:37:20,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 15:37:20,545 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 15:37:20,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-05 15:37:21,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:37:21,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 1076 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-05 15:37:21,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 15:37:21,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-05 15:37:21,078 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 15:37:21,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843028991] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:37:21,078 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 15:37:21,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-05 15:37:21,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012384138] [2021-11-05 15:37:21,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:37:21,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 15:37:21,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:37:21,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 15:37:21,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 15:37:21,080 INFO L87 Difference]: Start difference. First operand 23566 states and 29917 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:37:21,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:37:21,637 INFO L93 Difference]: Finished difference Result 56325 states and 71499 transitions. [2021-11-05 15:37:21,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 15:37:21,638 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-05 15:37:21,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:37:21,708 INFO L225 Difference]: With dead ends: 56325 [2021-11-05 15:37:21,709 INFO L226 Difference]: Without dead ends: 32762 [2021-11-05 15:37:21,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 5.99ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 15:37:21,753 INFO L933 BasicCegarLoop]: 14950 mSDtfsCounter, 5830 mSDsluCounter, 14945 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5830 SdHoareTripleChecker+Valid, 29895 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.27ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.66ms IncrementalHoareTripleChecker+Time [2021-11-05 15:37:21,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5830 Valid, 29895 Invalid, 15 Unknown, 0 Unchecked, 19.27ms Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 9.66ms Time] [2021-11-05 15:37:21,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32762 states. [2021-11-05 15:37:22,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32762 to 23570. [2021-11-05 15:37:22,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23570 states, 23557 states have (on average 1.2701532453198625) internal successors, (29921), 23569 states have internal predecessors, (29921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:37:22,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23570 states to 23570 states and 29921 transitions. [2021-11-05 15:37:22,493 INFO L78 Accepts]: Start accepts. Automaton has 23570 states and 29921 transitions. Word has length 27 [2021-11-05 15:37:22,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:37:22,494 INFO L470 AbstractCegarLoop]: Abstraction has 23570 states and 29921 transitions. [2021-11-05 15:37:22,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:37:22,494 INFO L276 IsEmpty]: Start isEmpty. Operand 23570 states and 29921 transitions. [2021-11-05 15:37:22,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-05 15:37:22,495 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:37:22,495 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:37:22,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-05 15:37:22,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 15:37:22,704 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 15:37:22,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:37:22,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1355879094, now seen corresponding path program 1 times [2021-11-05 15:37:22,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:37:22,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336485103] [2021-11-05 15:37:22,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:37:22,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:37:22,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:37:22,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 15:37:22,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:37:22,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336485103] [2021-11-05 15:37:22,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336485103] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 15:37:22,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752888568] [2021-11-05 15:37:22,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:37:22,797 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 15:37:22,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 15:37:22,798 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 15:37:22,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-05 15:37:23,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:37:23,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 15:37:23,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 15:37:23,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-05 15:37:23,315 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 15:37:23,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752888568] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:37:23,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 15:37:23,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-05 15:37:23,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33213953] [2021-11-05 15:37:23,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:37:23,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 15:37:23,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:37:23,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 15:37:23,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 15:37:23,317 INFO L87 Difference]: Start difference. First operand 23570 states and 29921 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:37:24,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:37:24,230 INFO L93 Difference]: Finished difference Result 61510 states and 78093 transitions. [2021-11-05 15:37:24,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 15:37:24,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-05 15:37:24,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:37:24,299 INFO L225 Difference]: With dead ends: 61510 [2021-11-05 15:37:24,299 INFO L226 Difference]: Without dead ends: 37943 [2021-11-05 15:37:24,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 7.12ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 15:37:24,343 INFO L933 BasicCegarLoop]: 14985 mSDtfsCounter, 14945 mSDsluCounter, 9121 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14945 SdHoareTripleChecker+Valid, 24106 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.22ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.17ms IncrementalHoareTripleChecker+Time [2021-11-05 15:37:24,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14945 Valid, 24106 Invalid, 7 Unknown, 0 Unchecked, 27.22ms Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 6.17ms Time] [2021-11-05 15:37:24,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37943 states. [2021-11-05 15:37:25,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37943 to 32762. [2021-11-05 15:37:25,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32762 states, 32749 states have (on average 1.2697486946166294) internal successors, (41583), 32761 states have internal predecessors, (41583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:37:25,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32762 states to 32762 states and 41583 transitions. [2021-11-05 15:37:25,343 INFO L78 Accepts]: Start accepts. Automaton has 32762 states and 41583 transitions. Word has length 28 [2021-11-05 15:37:25,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:37:25,344 INFO L470 AbstractCegarLoop]: Abstraction has 32762 states and 41583 transitions. [2021-11-05 15:37:25,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:37:25,344 INFO L276 IsEmpty]: Start isEmpty. Operand 32762 states and 41583 transitions. [2021-11-05 15:37:25,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-05 15:37:25,345 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:37:25,345 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:37:25,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-05 15:37:25,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-05 15:37:25,568 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 15:37:25,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:37:25,568 INFO L85 PathProgramCache]: Analyzing trace with hash -169760719, now seen corresponding path program 1 times [2021-11-05 15:37:25,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:37:25,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167613766] [2021-11-05 15:37:25,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:37:25,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:37:25,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:37:25,633 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-05 15:37:25,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:37:25,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167613766] [2021-11-05 15:37:25,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167613766] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 15:37:25,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219318314] [2021-11-05 15:37:25,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:37:25,634 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 15:37:25,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 15:37:25,635 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 15:37:25,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-05 15:37:26,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:37:26,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 1169 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 15:37:26,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 15:37:26,114 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 15:37:26,114 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 15:37:26,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219318314] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:37:26,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 15:37:26,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-05 15:37:26,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324337739] [2021-11-05 15:37:26,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:37:26,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 15:37:26,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:37:26,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 15:37:26,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 15:37:26,115 INFO L87 Difference]: Start difference. First operand 32762 states and 41583 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:37:26,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:37:26,740 INFO L93 Difference]: Finished difference Result 32786 states and 41605 transitions. [2021-11-05 15:37:26,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 15:37:26,740 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-05 15:37:26,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:37:26,800 INFO L225 Difference]: With dead ends: 32786 [2021-11-05 15:37:26,801 INFO L226 Difference]: Without dead ends: 32774 [2021-11-05 15:37:26,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 6.22ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 15:37:26,816 INFO L933 BasicCegarLoop]: 14965 mSDtfsCounter, 14950 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14950 SdHoareTripleChecker+Valid, 14976 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.60ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.98ms IncrementalHoareTripleChecker+Time [2021-11-05 15:37:26,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14950 Valid, 14976 Invalid, 6 Unknown, 0 Unchecked, 13.60ms Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 20.98ms Time] [2021-11-05 15:37:26,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32774 states. [2021-11-05 15:37:27,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32774 to 32762. [2021-11-05 15:37:27,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32762 states, 32749 states have (on average 1.2697181593331095) internal successors, (41582), 32761 states have internal predecessors, (41582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:37:27,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32762 states to 32762 states and 41582 transitions. [2021-11-05 15:37:27,891 INFO L78 Accepts]: Start accepts. Automaton has 32762 states and 41582 transitions. Word has length 33 [2021-11-05 15:37:27,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:37:27,891 INFO L470 AbstractCegarLoop]: Abstraction has 32762 states and 41582 transitions. [2021-11-05 15:37:27,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:37:27,891 INFO L276 IsEmpty]: Start isEmpty. Operand 32762 states and 41582 transitions. [2021-11-05 15:37:27,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-05 15:37:27,892 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:37:27,892 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:37:27,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-05 15:37:28,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 15:37:28,108 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 15:37:28,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:37:28,108 INFO L85 PathProgramCache]: Analyzing trace with hash -169701137, now seen corresponding path program 1 times [2021-11-05 15:37:28,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:37:28,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677999360] [2021-11-05 15:37:28,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:37:28,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:37:28,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:37:28,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-05 15:37:28,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:37:28,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677999360] [2021-11-05 15:37:28,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677999360] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 15:37:28,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743050264] [2021-11-05 15:37:28,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:37:28,179 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 15:37:28,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 15:37:28,180 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 15:37:28,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-05 15:37:28,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:37:28,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 1164 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 15:37:28,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 15:37:28,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 15:37:28,783 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 15:37:28,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743050264] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:37:28,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 15:37:28,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-05 15:37:28,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395759831] [2021-11-05 15:37:28,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:37:28,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 15:37:28,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:37:28,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 15:37:28,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 15:37:28,785 INFO L87 Difference]: Start difference. First operand 32762 states and 41582 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:37:29,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:37:29,713 INFO L93 Difference]: Finished difference Result 32762 states and 41582 transitions. [2021-11-05 15:37:29,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 15:37:29,714 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-05 15:37:29,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:37:29,765 INFO L225 Difference]: With dead ends: 32762 [2021-11-05 15:37:29,765 INFO L226 Difference]: Without dead ends: 32760 [2021-11-05 15:37:29,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 6.37ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 15:37:29,775 INFO L933 BasicCegarLoop]: 14952 mSDtfsCounter, 14922 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 224.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14922 SdHoareTripleChecker+Valid, 14952 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.42ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 255.93ms IncrementalHoareTripleChecker+Time [2021-11-05 15:37:29,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14922 Valid, 14952 Invalid, 2 Unknown, 0 Unchecked, 13.42ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 255.93ms Time] [2021-11-05 15:37:29,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32760 states. [2021-11-05 15:37:30,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32760 to 32760. [2021-11-05 15:37:30,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32760 states, 32748 states have (on average 1.269695859289117) internal successors, (41580), 32759 states have internal predecessors, (41580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:37:30,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32760 states to 32760 states and 41580 transitions. [2021-11-05 15:37:30,690 INFO L78 Accepts]: Start accepts. Automaton has 32760 states and 41580 transitions. Word has length 33 [2021-11-05 15:37:30,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:37:30,690 INFO L470 AbstractCegarLoop]: Abstraction has 32760 states and 41580 transitions. [2021-11-05 15:37:30,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:37:30,690 INFO L276 IsEmpty]: Start isEmpty. Operand 32760 states and 41580 transitions. [2021-11-05 15:37:30,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-05 15:37:30,691 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:37:30,691 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:37:30,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-05 15:37:30,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 15:37:30,892 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 15:37:30,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:37:30,892 INFO L85 PathProgramCache]: Analyzing trace with hash -965733363, now seen corresponding path program 1 times [2021-11-05 15:37:30,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:37:30,892 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974296525] [2021-11-05 15:37:30,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:37:30,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:37:30,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:37:30,951 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-05 15:37:30,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:37:30,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974296525] [2021-11-05 15:37:30,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974296525] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 15:37:30,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203854952] [2021-11-05 15:37:30,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:37:30,952 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 15:37:30,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 15:37:30,953 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 15:37:30,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-05 15:37:31,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:37:31,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 1166 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 15:37:31,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 15:37:31,472 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 15:37:31,472 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 15:37:31,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203854952] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:37:31,472 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 15:37:31,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-05 15:37:31,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698729081] [2021-11-05 15:37:31,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:37:31,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 15:37:31,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:37:31,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 15:37:31,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 15:37:31,474 INFO L87 Difference]: Start difference. First operand 32760 states and 41580 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:37:32,753 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 15:37:33,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:37:33,605 INFO L93 Difference]: Finished difference Result 32760 states and 41580 transitions. [2021-11-05 15:37:33,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 15:37:33,606 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-05 15:37:33,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:37:33,661 INFO L225 Difference]: With dead ends: 32760 [2021-11-05 15:37:33,662 INFO L226 Difference]: Without dead ends: 32758 [2021-11-05 15:37:33,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 6.40ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 15:37:33,677 INFO L933 BasicCegarLoop]: 14950 mSDtfsCounter, 14919 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1275.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14919 SdHoareTripleChecker+Valid, 14950 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.35ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1334.24ms IncrementalHoareTripleChecker+Time [2021-11-05 15:37:33,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14919 Valid, 14950 Invalid, 2 Unknown, 0 Unchecked, 14.35ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 1334.24ms Time] [2021-11-05 15:37:33,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32758 states. [2021-11-05 15:37:34,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32758 to 32758. [2021-11-05 15:37:34,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32758 states, 32747 states have (on average 1.2696735578831648) internal successors, (41578), 32757 states have internal predecessors, (41578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:37:34,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32758 states to 32758 states and 41578 transitions. [2021-11-05 15:37:34,758 INFO L78 Accepts]: Start accepts. Automaton has 32758 states and 41578 transitions. Word has length 34 [2021-11-05 15:37:34,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:37:34,759 INFO L470 AbstractCegarLoop]: Abstraction has 32758 states and 41578 transitions. [2021-11-05 15:37:34,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:37:34,759 INFO L276 IsEmpty]: Start isEmpty. Operand 32758 states and 41578 transitions. [2021-11-05 15:37:34,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-05 15:37:34,760 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:37:34,760 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:37:34,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-05 15:37:34,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 15:37:34,963 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 15:37:34,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:37:34,964 INFO L85 PathProgramCache]: Analyzing trace with hash 127071417, now seen corresponding path program 1 times [2021-11-05 15:37:34,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:37:34,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2270025] [2021-11-05 15:37:34,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:37:34,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:37:35,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:37:35,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-05 15:37:35,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:37:35,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2270025] [2021-11-05 15:37:35,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2270025] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 15:37:35,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175758961] [2021-11-05 15:37:35,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:37:35,064 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 15:37:35,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 15:37:35,065 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 15:37:35,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-05 15:37:35,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:37:35,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 1168 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 15:37:35,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 15:37:35,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 15:37:35,601 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 15:37:35,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175758961] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:37:35,601 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 15:37:35,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-05 15:37:35,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534905198] [2021-11-05 15:37:35,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:37:35,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 15:37:35,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:37:35,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 15:37:35,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 15:37:35,603 INFO L87 Difference]: Start difference. First operand 32758 states and 41578 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:37:37,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:37:37,070 INFO L93 Difference]: Finished difference Result 32758 states and 41578 transitions. [2021-11-05 15:37:37,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 15:37:37,070 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-11-05 15:37:37,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:37:37,129 INFO L225 Difference]: With dead ends: 32758 [2021-11-05 15:37:37,129 INFO L226 Difference]: Without dead ends: 32756 [2021-11-05 15:37:37,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 6.84ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 15:37:37,146 INFO L933 BasicCegarLoop]: 14948 mSDtfsCounter, 14916 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 601.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14916 SdHoareTripleChecker+Valid, 14948 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.25ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 644.43ms IncrementalHoareTripleChecker+Time [2021-11-05 15:37:37,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14916 Valid, 14948 Invalid, 2 Unknown, 0 Unchecked, 14.25ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 644.43ms Time] [2021-11-05 15:37:37,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32756 states. [2021-11-05 15:37:38,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32756 to 32756. [2021-11-05 15:37:38,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32756 states, 32746 states have (on average 1.2696512551151287) internal successors, (41576), 32755 states have internal predecessors, (41576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:37:38,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32756 states to 32756 states and 41576 transitions. [2021-11-05 15:37:38,157 INFO L78 Accepts]: Start accepts. Automaton has 32756 states and 41576 transitions. Word has length 35 [2021-11-05 15:37:38,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:37:38,158 INFO L470 AbstractCegarLoop]: Abstraction has 32756 states and 41576 transitions. [2021-11-05 15:37:38,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:37:38,158 INFO L276 IsEmpty]: Start isEmpty. Operand 32756 states and 41576 transitions. [2021-11-05 15:37:38,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-05 15:37:38,158 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:37:38,159 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:37:38,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-05 15:37:38,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 15:37:38,361 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 15:37:38,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:37:38,361 INFO L85 PathProgramCache]: Analyzing trace with hash -355718761, now seen corresponding path program 1 times [2021-11-05 15:37:38,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:37:38,362 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80267653] [2021-11-05 15:37:38,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:37:38,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:37:38,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:37:38,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-05 15:37:38,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:37:38,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80267653] [2021-11-05 15:37:38,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80267653] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 15:37:38,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019046382] [2021-11-05 15:37:38,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:37:38,416 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 15:37:38,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 15:37:38,417 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 15:37:38,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-05 15:37:38,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:37:38,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 1170 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 15:37:38,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 15:37:39,021 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 15:37:39,021 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 15:37:39,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019046382] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:37:39,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 15:37:39,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-05 15:37:39,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768032274] [2021-11-05 15:37:39,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:37:39,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 15:37:39,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:37:39,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 15:37:39,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 15:37:39,022 INFO L87 Difference]: Start difference. First operand 32756 states and 41576 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:37:40,428 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 15:37:41,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:37:41,457 INFO L93 Difference]: Finished difference Result 32756 states and 41576 transitions. [2021-11-05 15:37:41,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 15:37:41,457 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-05 15:37:41,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:37:41,510 INFO L225 Difference]: With dead ends: 32756 [2021-11-05 15:37:41,510 INFO L226 Difference]: Without dead ends: 32732 [2021-11-05 15:37:41,521 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 6.39ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 15:37:41,521 INFO L933 BasicCegarLoop]: 14935 mSDtfsCounter, 11788 mSDsluCounter, 3098 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1428.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11788 SdHoareTripleChecker+Valid, 18033 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.19ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1494.34ms IncrementalHoareTripleChecker+Time [2021-11-05 15:37:41,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11788 Valid, 18033 Invalid, 28 Unknown, 0 Unchecked, 23.19ms Time], IncrementalHoareTripleChecker [9 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 1494.34ms Time] [2021-11-05 15:37:41,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32732 states. [2021-11-05 15:37:42,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32732 to 32732. [2021-11-05 15:37:42,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32732 states, 32727 states have (on average 1.2693800226112995) internal successors, (41543), 32731 states have internal predecessors, (41543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:37:42,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32732 states to 32732 states and 41543 transitions. [2021-11-05 15:37:42,663 INFO L78 Accepts]: Start accepts. Automaton has 32732 states and 41543 transitions. Word has length 36 [2021-11-05 15:37:42,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:37:42,663 INFO L470 AbstractCegarLoop]: Abstraction has 32732 states and 41543 transitions. [2021-11-05 15:37:42,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:37:42,664 INFO L276 IsEmpty]: Start isEmpty. Operand 32732 states and 41543 transitions. [2021-11-05 15:37:42,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-05 15:37:42,664 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:37:42,665 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 15:37:42,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-05 15:37:42,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 15:37:42,883 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 15:37:42,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:37:42,884 INFO L85 PathProgramCache]: Analyzing trace with hash 875062828, now seen corresponding path program 1 times [2021-11-05 15:37:42,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:37:42,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143786870] [2021-11-05 15:37:42,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:37:42,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:37:42,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:37:42,938 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-05 15:37:42,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:37:42,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143786870] [2021-11-05 15:37:42,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143786870] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 15:37:42,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60005087] [2021-11-05 15:37:42,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:37:42,939 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 15:37:42,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 15:37:42,940 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 15:37:42,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-05 15:37:43,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:37:43,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 1252 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-05 15:37:43,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 15:37:43,459 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 15:37:43,460 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 15:37:43,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60005087] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:37:43,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 15:37:43,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-05 15:37:43,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143616819] [2021-11-05 15:37:43,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:37:43,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 15:37:43,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:37:43,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 15:37:43,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 15:37:43,461 INFO L87 Difference]: Start difference. First operand 32732 states and 41543 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:37:44,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:37:44,905 INFO L93 Difference]: Finished difference Result 79343 states and 100728 transitions. [2021-11-05 15:37:44,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 15:37:44,905 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-11-05 15:37:44,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:37:44,997 INFO L225 Difference]: With dead ends: 79343 [2021-11-05 15:37:44,997 INFO L226 Difference]: Without dead ends: 46614 [2021-11-05 15:37:45,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 6.03ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 15:37:45,067 INFO L933 BasicCegarLoop]: 14908 mSDtfsCounter, 14037 mSDsluCounter, 12605 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14037 SdHoareTripleChecker+Valid, 27513 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.91ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 59.05ms IncrementalHoareTripleChecker+Time [2021-11-05 15:37:45,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14037 Valid, 27513 Invalid, 45 Unknown, 0 Unchecked, 21.91ms Time], IncrementalHoareTripleChecker [14 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 59.05ms Time] [2021-11-05 15:37:45,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46614 states. [2021-11-05 15:37:46,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46614 to 46614. [2021-11-05 15:37:46,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46614 states, 46609 states have (on average 1.2697118582248064) internal successors, (59180), 46613 states have internal predecessors, (59180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:37:46,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46614 states to 46614 states and 59180 transitions. [2021-11-05 15:37:46,773 INFO L78 Accepts]: Start accepts. Automaton has 46614 states and 59180 transitions. Word has length 46 [2021-11-05 15:37:46,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:37:46,773 INFO L470 AbstractCegarLoop]: Abstraction has 46614 states and 59180 transitions. [2021-11-05 15:37:46,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:37:46,773 INFO L276 IsEmpty]: Start isEmpty. Operand 46614 states and 59180 transitions. [2021-11-05 15:37:46,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-05 15:37:46,777 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:37:46,777 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 15:37:46,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-05 15:37:46,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-05 15:37:46,991 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-05 15:37:46,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:37:46,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1841768488, now seen corresponding path program 1 times [2021-11-05 15:37:46,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:37:46,993 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002185065] [2021-11-05 15:37:46,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:37:46,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:37:47,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:37:47,063 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-05 15:37:47,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:37:47,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002185065] [2021-11-05 15:37:47,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002185065] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 15:37:47,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075583273] [2021-11-05 15:37:47,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:37:47,064 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 15:37:47,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 15:37:47,065 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 15:37:47,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-05 15:37:47,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:37:47,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 1567 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 15:37:47,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 15:37:47,636 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-05 15:37:47,637 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 15:37:47,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075583273] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:37:47,637 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 15:37:47,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-05 15:37:47,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649685026] [2021-11-05 15:37:47,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:37:47,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 15:37:47,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:37:47,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 15:37:47,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 15:37:47,638 INFO L87 Difference]: Start difference. First operand 46614 states and 59180 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:37:57,663 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 15:38:01,513 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 15:38:03,661 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []