./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4d014703 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--hwmon--abituguru3.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 7d6844ab51374c8e656234daa6d7df2c3927c38bae9fcbeafc3fadf6f3b893b1 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 17:06:05,660 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 17:06:05,666 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 17:06:05,710 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 17:06:05,711 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 17:06:05,712 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 17:06:05,713 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 17:06:05,714 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 17:06:05,715 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 17:06:05,716 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 17:06:05,716 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 17:06:05,717 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 17:06:05,717 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 17:06:05,718 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 17:06:05,719 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 17:06:05,720 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 17:06:05,720 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 17:06:05,721 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 17:06:05,722 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 17:06:05,724 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 17:06:05,725 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 17:06:05,733 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 17:06:05,736 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 17:06:05,737 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 17:06:05,743 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 17:06:05,743 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 17:06:05,743 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 17:06:05,744 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 17:06:05,744 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 17:06:05,744 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 17:06:05,745 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 17:06:05,745 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 17:06:05,745 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 17:06:05,746 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 17:06:05,746 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 17:06:05,747 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 17:06:05,747 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 17:06:05,747 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 17:06:05,747 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 17:06:05,748 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 17:06:05,748 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 17:06:05,750 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 17:06:05,776 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 17:06:05,777 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 17:06:05,777 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 17:06:05,777 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 17:06:05,779 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 17:06:05,779 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 17:06:05,779 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 17:06:05,779 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 17:06:05,779 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 17:06:05,779 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 17:06:05,780 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 17:06:05,780 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 17:06:05,780 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 17:06:05,781 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 17:06:05,781 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 17:06:05,781 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 17:06:05,781 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 17:06:05,781 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 17:06:05,781 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 17:06:05,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 17:06:05,782 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 17:06:05,782 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 17:06:05,782 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 17:06:05,782 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 17:06:05,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 17:06:05,782 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 17:06:05,783 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 17:06:05,783 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 17:06:05,784 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 17:06:05,784 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7d6844ab51374c8e656234daa6d7df2c3927c38bae9fcbeafc3fadf6f3b893b1 [2021-11-02 17:06:05,993 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 17:06:06,009 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 17:06:06,011 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 17:06:06,012 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 17:06:06,013 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 17:06:06,013 INFO L432 ainManager$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--hwmon--abituguru3.ko-main.cil.out.i [2021-11-02 17:06:06,055 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58b185287/73bd3d1bf10445f8986ac8b89edb40b4/FLAGe701edb6f [2021-11-02 17:06:06,550 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 17:06:06,551 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i [2021-11-02 17:06:06,576 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58b185287/73bd3d1bf10445f8986ac8b89edb40b4/FLAGe701edb6f [2021-11-02 17:06:06,823 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58b185287/73bd3d1bf10445f8986ac8b89edb40b4 [2021-11-02 17:06:06,825 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 17:06:06,826 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 17:06:06,827 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 17:06:06,827 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 17:06:06,829 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 17:06:06,830 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 05:06:06" (1/1) ... [2021-11-02 17:06:06,831 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f0619e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:06:06, skipping insertion in model container [2021-11-02 17:06:06,831 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 05:06:06" (1/1) ... [2021-11-02 17:06:06,836 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 17:06:06,891 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 17:06:07,512 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--hwmon--abituguru3.ko-main.cil.out.i[132927,132940] [2021-11-02 17:06:07,559 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 17:06:07,631 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 17:06:07,749 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--hwmon--abituguru3.ko-main.cil.out.i[132927,132940] [2021-11-02 17:06:07,761 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 17:06:07,861 INFO L208 MainTranslator]: Completed translation [2021-11-02 17:06:07,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:06:07 WrapperNode [2021-11-02 17:06:07,862 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 17:06:07,863 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 17:06:07,863 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 17:06:07,863 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 17:06:07,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:06:07" (1/1) ... [2021-11-02 17:06:07,954 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:06:07" (1/1) ... [2021-11-02 17:06:08,232 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 17:06:08,233 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 17:06:08,233 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 17:06:08,233 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 17:06:08,239 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:06:07" (1/1) ... [2021-11-02 17:06:08,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:06:07" (1/1) ... [2021-11-02 17:06:08,304 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:06:07" (1/1) ... [2021-11-02 17:06:08,308 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:06:07" (1/1) ... [2021-11-02 17:06:08,473 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:06:07" (1/1) ... [2021-11-02 17:06:08,487 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:06:07" (1/1) ... [2021-11-02 17:06:08,506 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:06:07" (1/1) ... [2021-11-02 17:06:08,536 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 17:06:08,537 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 17:06:08,537 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 17:06:08,537 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 17:06:08,538 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:06:07" (1/1) ... [2021-11-02 17:06:08,543 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 17:06:08,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 17:06:08,565 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) [2021-11-02 17:06:08,571 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 [2021-11-02 17:06:08,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 17:06:08,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 17:06:08,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 17:06:08,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 17:06:08,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 17:06:08,592 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 17:06:08,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 17:06:08,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 17:06:08,593 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-02 17:06:08,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 17:06:08,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 17:06:08,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 17:06:48,549 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 17:06:48,550 INFO L299 CfgBuilder]: Removed 1211 assume(true) statements. [2021-11-02 17:06:48,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 05:06:48 BoogieIcfgContainer [2021-11-02 17:06:48,553 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 17:06:48,554 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 17:06:48,555 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 17:06:48,557 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 17:06:48,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 05:06:06" (1/3) ... [2021-11-02 17:06:48,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34a2526c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 05:06:48, skipping insertion in model container [2021-11-02 17:06:48,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:06:07" (2/3) ... [2021-11-02 17:06:48,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34a2526c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 05:06:48, skipping insertion in model container [2021-11-02 17:06:48,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 05:06:48" (3/3) ... [2021-11-02 17:06:48,561 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i [2021-11-02 17:06:48,565 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 17:06:48,566 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-02 17:06:48,608 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 17:06:48,615 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 [2021-11-02 17:06:48,615 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-02 17:06:48,645 INFO L276 IsEmpty]: Start isEmpty. Operand has 1381 states, 1369 states have (on average 1.3783783783783783) internal successors, (1887), 1380 states have internal predecessors, (1887), 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) [2021-11-02 17:06:48,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-02 17:06:48,652 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:06:48,653 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 17:06:48,654 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 17:06:48,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:06:48,658 INFO L85 PathProgramCache]: Analyzing trace with hash 12375506, now seen corresponding path program 1 times [2021-11-02 17:06:48,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:06:48,665 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603018984] [2021-11-02 17:06:48,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:06:48,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:06:49,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:06:49,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 17:06:49,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:06:49,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603018984] [2021-11-02 17:06:49,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603018984] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:06:49,806 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 17:06:49,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 17:06:49,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826825924] [2021-11-02 17:06:49,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:06:49,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:06:49,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:06:49,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:06:49,838 INFO L87 Difference]: Start difference. First operand has 1381 states, 1369 states have (on average 1.3783783783783783) internal successors, (1887), 1380 states have internal predecessors, (1887), 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 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2021-11-02 17:06:52,162 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:07:02,202 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:07:16,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:07:16,847 INFO L93 Difference]: Finished difference Result 4047 states and 5536 transitions. [2021-11-02 17:07:16,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:07:16,857 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 14 [2021-11-02 17:07:16,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:07:16,882 INFO L225 Difference]: With dead ends: 4047 [2021-11-02 17:07:16,882 INFO L226 Difference]: Without dead ends: 2665 [2021-11-02 17:07:16,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.20ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:07:16,895 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1833 mSDsluCounter, 1753 mSDsCounter, 0 mSdLazyCounter, 3624 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24053.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1833 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 51.29ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 3624 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26389.65ms IncrementalHoareTripleChecker+Time [2021-11-02 17:07:16,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1833 Valid, 0 Invalid, 3629 Unknown, 0 Unchecked, 51.29ms Time], IncrementalHoareTripleChecker [3 Valid, 3624 Invalid, 2 Unknown, 0 Unchecked, 26389.65ms Time] [2021-11-02 17:07:16,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2665 states. [2021-11-02 17:07:16,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2665 to 2648. [2021-11-02 17:07:17,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2648 states, 2637 states have (on average 1.3621539628365567) internal successors, (3592), 2647 states have internal predecessors, (3592), 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) [2021-11-02 17:07:17,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2648 states to 2648 states and 3592 transitions. [2021-11-02 17:07:17,013 INFO L78 Accepts]: Start accepts. Automaton has 2648 states and 3592 transitions. Word has length 14 [2021-11-02 17:07:17,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:07:17,014 INFO L470 AbstractCegarLoop]: Abstraction has 2648 states and 3592 transitions. [2021-11-02 17:07:17,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2021-11-02 17:07:17,015 INFO L276 IsEmpty]: Start isEmpty. Operand 2648 states and 3592 transitions. [2021-11-02 17:07:17,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-02 17:07:17,017 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:07:17,017 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 17:07:17,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 17:07:17,018 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 17:07:17,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:07:17,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1358126481, now seen corresponding path program 1 times [2021-11-02 17:07:17,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:07:17,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849852291] [2021-11-02 17:07:17,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:07:17,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:07:17,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:07:17,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 17:07:17,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:07:17,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849852291] [2021-11-02 17:07:17,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849852291] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:07:17,695 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 17:07:17,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 17:07:17,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811648644] [2021-11-02 17:07:17,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:07:17,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:07:17,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:07:17,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:07:17,696 INFO L87 Difference]: Start difference. First operand 2648 states and 3592 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) [2021-11-02 17:07:19,936 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:07:31,290 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:07:48,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:07:48,175 INFO L93 Difference]: Finished difference Result 7631 states and 10324 transitions. [2021-11-02 17:07:48,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:07:48,177 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 [2021-11-02 17:07:48,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:07:48,191 INFO L225 Difference]: With dead ends: 7631 [2021-11-02 17:07:48,191 INFO L226 Difference]: Without dead ends: 4986 [2021-11-02 17:07:48,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.35ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:07:48,230 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1623 mSDsluCounter, 1792 mSDsCounter, 0 mSdLazyCounter, 3726 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28030.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1623 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.18ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3726 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30006.09ms IncrementalHoareTripleChecker+Time [2021-11-02 17:07:48,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1623 Valid, 0 Invalid, 3729 Unknown, 0 Unchecked, 33.18ms Time], IncrementalHoareTripleChecker [1 Valid, 3726 Invalid, 2 Unknown, 0 Unchecked, 30006.09ms Time] [2021-11-02 17:07:48,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4986 states. [2021-11-02 17:07:48,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4986 to 4969. [2021-11-02 17:07:48,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4969 states, 4958 states have (on average 1.3551835417507059) internal successors, (6719), 4968 states have internal predecessors, (6719), 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) [2021-11-02 17:07:48,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4969 states to 4969 states and 6719 transitions. [2021-11-02 17:07:48,330 INFO L78 Accepts]: Start accepts. Automaton has 4969 states and 6719 transitions. Word has length 15 [2021-11-02 17:07:48,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:07:48,331 INFO L470 AbstractCegarLoop]: Abstraction has 4969 states and 6719 transitions. [2021-11-02 17:07:48,331 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) [2021-11-02 17:07:48,332 INFO L276 IsEmpty]: Start isEmpty. Operand 4969 states and 6719 transitions. [2021-11-02 17:07:48,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-02 17:07:48,336 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:07:48,338 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] [2021-11-02 17:07:48,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 17:07:48,338 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 17:07:48,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:07:48,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1461430461, now seen corresponding path program 1 times [2021-11-02 17:07:48,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:07:48,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088461257] [2021-11-02 17:07:48,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:07:48,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:07:48,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:07:49,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 17:07:49,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:07:49,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088461257] [2021-11-02 17:07:49,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088461257] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:07:49,215 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 17:07:49,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 17:07:49,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588940116] [2021-11-02 17:07:49,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 17:07:49,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:07:49,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 17:07:49,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 17:07:49,216 INFO L87 Difference]: Start difference. First operand 4969 states and 6719 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 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) [2021-11-02 17:07:51,462 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:08:28,596 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:09:56,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:09:56,886 INFO L93 Difference]: Finished difference Result 24687 states and 33387 transitions. [2021-11-02 17:09:56,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 17:09:56,892 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 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 [2021-11-02 17:09:56,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:09:56,960 INFO L225 Difference]: With dead ends: 24687 [2021-11-02 17:09:56,960 INFO L226 Difference]: Without dead ends: 19721 [2021-11-02 17:09:56,974 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 461.38ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-02 17:09:56,977 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 10942 mSDsluCounter, 14573 mSDsCounter, 0 mSdLazyCounter, 18281 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 120592.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10942 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 18289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 179.78ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18281 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 126175.16ms IncrementalHoareTripleChecker+Time [2021-11-02 17:09:56,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10942 Valid, 0 Invalid, 18289 Unknown, 0 Unchecked, 179.78ms Time], IncrementalHoareTripleChecker [6 Valid, 18281 Invalid, 2 Unknown, 0 Unchecked, 126175.16ms Time] [2021-11-02 17:09:56,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19721 states. [2021-11-02 17:09:57,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19721 to 5011. [2021-11-02 17:09:57,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5011 states, 5000 states have (on average 1.3542) internal successors, (6771), 5010 states have internal predecessors, (6771), 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) [2021-11-02 17:09:57,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5011 states to 5011 states and 6771 transitions. [2021-11-02 17:09:57,224 INFO L78 Accepts]: Start accepts. Automaton has 5011 states and 6771 transitions. Word has length 23 [2021-11-02 17:09:57,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:09:57,224 INFO L470 AbstractCegarLoop]: Abstraction has 5011 states and 6771 transitions. [2021-11-02 17:09:57,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 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) [2021-11-02 17:09:57,224 INFO L276 IsEmpty]: Start isEmpty. Operand 5011 states and 6771 transitions. [2021-11-02 17:09:57,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-02 17:09:57,227 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:09:57,227 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] [2021-11-02 17:09:57,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 17:09:57,227 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 17:09:57,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:09:57,228 INFO L85 PathProgramCache]: Analyzing trace with hash 874624447, now seen corresponding path program 1 times [2021-11-02 17:09:57,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:09:57,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391244207] [2021-11-02 17:09:57,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:09:57,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:09:57,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:09:57,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 17:09:57,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:09:57,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391244207] [2021-11-02 17:09:57,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391244207] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:09:57,828 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 17:09:57,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 17:09:57,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82934252] [2021-11-02 17:09:57,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:09:57,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:09:57,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:09:57,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:09:57,829 INFO L87 Difference]: Start difference. First operand 5011 states and 6771 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) [2021-11-02 17:10:00,056 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:10:13,378 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:10:40,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:10:40,787 INFO L93 Difference]: Finished difference Result 8753 states and 11805 transitions. [2021-11-02 17:10:40,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:10:40,788 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 [2021-11-02 17:10:40,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:10:40,808 INFO L225 Difference]: With dead ends: 8753 [2021-11-02 17:10:40,809 INFO L226 Difference]: Without dead ends: 8744 [2021-11-02 17:10:40,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.70ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:10:40,813 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1850 mSDsluCounter, 1851 mSDsCounter, 0 mSdLazyCounter, 5329 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39745.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1850 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.38ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5329 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42440.63ms IncrementalHoareTripleChecker+Time [2021-11-02 17:10:40,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1850 Valid, 0 Invalid, 5332 Unknown, 0 Unchecked, 26.38ms Time], IncrementalHoareTripleChecker [1 Valid, 5329 Invalid, 2 Unknown, 0 Unchecked, 42440.63ms Time] [2021-11-02 17:10:40,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8744 states. [2021-11-02 17:10:40,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8744 to 5011. [2021-11-02 17:10:40,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5011 states, 5000 states have (on average 1.354) internal successors, (6770), 5010 states have internal predecessors, (6770), 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) [2021-11-02 17:10:40,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5011 states to 5011 states and 6770 transitions. [2021-11-02 17:10:40,954 INFO L78 Accepts]: Start accepts. Automaton has 5011 states and 6770 transitions. Word has length 23 [2021-11-02 17:10:40,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:10:40,955 INFO L470 AbstractCegarLoop]: Abstraction has 5011 states and 6770 transitions. [2021-11-02 17:10:40,957 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) [2021-11-02 17:10:40,957 INFO L276 IsEmpty]: Start isEmpty. Operand 5011 states and 6770 transitions. [2021-11-02 17:10:40,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-02 17:10:40,958 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:10:40,958 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] [2021-11-02 17:10:40,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 17:10:40,958 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 17:10:40,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:10:40,959 INFO L85 PathProgramCache]: Analyzing trace with hash 874684029, now seen corresponding path program 1 times [2021-11-02 17:10:40,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:10:40,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88304898] [2021-11-02 17:10:40,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:10:40,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:10:41,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:10:41,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 17:10:41,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:10:41,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88304898] [2021-11-02 17:10:41,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88304898] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:10:41,522 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 17:10:41,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 17:10:41,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789214916] [2021-11-02 17:10:41,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:10:41,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:10:41,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:10:41,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:10:41,523 INFO L87 Difference]: Start difference. First operand 5011 states and 6770 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) [2021-11-02 17:10:43,749 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:10:51,768 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:11:13,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:11:13,885 INFO L93 Difference]: Finished difference Result 10013 states and 13532 transitions. [2021-11-02 17:11:13,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:11:13,887 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 [2021-11-02 17:11:13,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:11:13,904 INFO L225 Difference]: With dead ends: 10013 [2021-11-02 17:11:13,904 INFO L226 Difference]: Without dead ends: 10011 [2021-11-02 17:11:13,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.46ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:11:13,909 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1834 mSDsluCounter, 1847 mSDsCounter, 0 mSdLazyCounter, 3704 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29508.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1834 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.76ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3704 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31882.64ms IncrementalHoareTripleChecker+Time [2021-11-02 17:11:13,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1834 Valid, 0 Invalid, 3707 Unknown, 0 Unchecked, 21.76ms Time], IncrementalHoareTripleChecker [1 Valid, 3704 Invalid, 2 Unknown, 0 Unchecked, 31882.64ms Time] [2021-11-02 17:11:13,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10011 states. [2021-11-02 17:11:14,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10011 to 9994. [2021-11-02 17:11:14,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9994 states, 9983 states have (on average 1.3544024842231794) internal successors, (13521), 9993 states have internal predecessors, (13521), 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) [2021-11-02 17:11:14,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9994 states to 9994 states and 13521 transitions. [2021-11-02 17:11:14,125 INFO L78 Accepts]: Start accepts. Automaton has 9994 states and 13521 transitions. Word has length 23 [2021-11-02 17:11:14,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:11:14,125 INFO L470 AbstractCegarLoop]: Abstraction has 9994 states and 13521 transitions. [2021-11-02 17:11:14,125 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) [2021-11-02 17:11:14,125 INFO L276 IsEmpty]: Start isEmpty. Operand 9994 states and 13521 transitions. [2021-11-02 17:11:14,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-02 17:11:14,126 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:11:14,126 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] [2021-11-02 17:11:14,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 17:11:14,127 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 17:11:14,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:11:14,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1345403867, now seen corresponding path program 1 times [2021-11-02 17:11:14,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:11:14,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524990558] [2021-11-02 17:11:14,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:11:14,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:11:14,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:11:14,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 17:11:14,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:11:14,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524990558] [2021-11-02 17:11:14,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524990558] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:11:14,676 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 17:11:14,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 17:11:14,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044994789] [2021-11-02 17:11:14,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:11:14,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:11:14,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:11:14,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:11:14,677 INFO L87 Difference]: Start difference. First operand 9994 states and 13521 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-11-02 17:11:16,911 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:11:25,013 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:11:47,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:11:47,071 INFO L93 Difference]: Finished difference Result 10014 states and 13533 transitions. [2021-11-02 17:11:47,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:11:47,074 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 24 [2021-11-02 17:11:47,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:11:47,087 INFO L225 Difference]: With dead ends: 10014 [2021-11-02 17:11:47,088 INFO L226 Difference]: Without dead ends: 10012 [2021-11-02 17:11:47,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.51ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:11:47,091 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1831 mSDsluCounter, 1850 mSDsCounter, 0 mSdLazyCounter, 3707 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29390.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1831 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.06ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3707 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31939.45ms IncrementalHoareTripleChecker+Time [2021-11-02 17:11:47,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1831 Valid, 0 Invalid, 3710 Unknown, 0 Unchecked, 21.06ms Time], IncrementalHoareTripleChecker [1 Valid, 3707 Invalid, 2 Unknown, 0 Unchecked, 31939.45ms Time] [2021-11-02 17:11:47,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10012 states. [2021-11-02 17:11:47,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10012 to 9995. [2021-11-02 17:11:47,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9995 states, 9984 states have (on average 1.3543669871794872) internal successors, (13522), 9994 states have internal predecessors, (13522), 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) [2021-11-02 17:11:47,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9995 states to 9995 states and 13522 transitions. [2021-11-02 17:11:47,365 INFO L78 Accepts]: Start accepts. Automaton has 9995 states and 13522 transitions. Word has length 24 [2021-11-02 17:11:47,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:11:47,365 INFO L470 AbstractCegarLoop]: Abstraction has 9995 states and 13522 transitions. [2021-11-02 17:11:47,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-11-02 17:11:47,366 INFO L276 IsEmpty]: Start isEmpty. Operand 9995 states and 13522 transitions. [2021-11-02 17:11:47,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-02 17:11:47,367 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:11:47,367 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] [2021-11-02 17:11:47,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 17:11:47,367 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 17:11:47,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:11:47,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1242150329, now seen corresponding path program 1 times [2021-11-02 17:11:47,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:11:47,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325661520] [2021-11-02 17:11:47,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:11:47,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:11:47,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:11:47,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 17:11:47,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:11:47,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325661520] [2021-11-02 17:11:47,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325661520] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:11:47,898 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 17:11:47,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 17:11:47,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788487362] [2021-11-02 17:11:47,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:11:47,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:11:47,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:11:47,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:11:47,899 INFO L87 Difference]: Start difference. First operand 9995 states and 13522 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2021-11-02 17:11:50,143 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:12:01,153 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:12:19,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:12:19,312 INFO L93 Difference]: Finished difference Result 22827 states and 30928 transitions. [2021-11-02 17:12:19,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:12:19,314 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 25 [2021-11-02 17:12:19,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:12:19,334 INFO L225 Difference]: With dead ends: 22827 [2021-11-02 17:12:19,334 INFO L226 Difference]: Without dead ends: 12829 [2021-11-02 17:12:19,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.97ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:12:19,350 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 663 mSDsluCounter, 1798 mSDsCounter, 0 mSdLazyCounter, 3675 mSolverCounterSat, 15 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28673.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.03ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 3675 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30893.47ms IncrementalHoareTripleChecker+Time [2021-11-02 17:12:19,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [663 Valid, 0 Invalid, 3692 Unknown, 0 Unchecked, 19.03ms Time], IncrementalHoareTripleChecker [15 Valid, 3675 Invalid, 2 Unknown, 0 Unchecked, 30893.47ms Time] [2021-11-02 17:12:19,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12829 states. [2021-11-02 17:12:19,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12829 to 12746. [2021-11-02 17:12:19,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12746 states, 12735 states have (on average 1.3568119356105222) internal successors, (17279), 12745 states have internal predecessors, (17279), 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) [2021-11-02 17:12:19,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12746 states to 12746 states and 17279 transitions. [2021-11-02 17:12:19,650 INFO L78 Accepts]: Start accepts. Automaton has 12746 states and 17279 transitions. Word has length 25 [2021-11-02 17:12:19,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:12:19,651 INFO L470 AbstractCegarLoop]: Abstraction has 12746 states and 17279 transitions. [2021-11-02 17:12:19,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2021-11-02 17:12:19,651 INFO L276 IsEmpty]: Start isEmpty. Operand 12746 states and 17279 transitions. [2021-11-02 17:12:19,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-02 17:12:19,652 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:12:19,652 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 17:12:19,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 17:12:19,652 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 17:12:19,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:12:19,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1456826833, now seen corresponding path program 1 times [2021-11-02 17:12:19,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:12:19,653 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833366553] [2021-11-02 17:12:19,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:12:19,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:12:19,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:12:20,176 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 17:12:20,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:12:20,176 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833366553] [2021-11-02 17:12:20,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833366553] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:12:20,177 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 17:12:20,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 17:12:20,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191828379] [2021-11-02 17:12:20,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:12:20,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:12:20,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:12:20,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:12:20,178 INFO L87 Difference]: Start difference. First operand 12746 states and 17279 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) [2021-11-02 17:12:22,411 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:12:35,583 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:13:02,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:13:02,323 INFO L93 Difference]: Finished difference Result 31696 states and 43098 transitions. [2021-11-02 17:13:02,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:13:02,325 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 [2021-11-02 17:13:02,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:13:02,347 INFO L225 Difference]: With dead ends: 31696 [2021-11-02 17:13:02,347 INFO L226 Difference]: Without dead ends: 18953 [2021-11-02 17:13:02,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.53ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:13:02,361 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1685 mSDsluCounter, 1790 mSDsCounter, 0 mSdLazyCounter, 5331 mSolverCounterSat, 22 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38475.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1685 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.48ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 5331 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41492.70ms IncrementalHoareTripleChecker+Time [2021-11-02 17:13:02,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1685 Valid, 0 Invalid, 5355 Unknown, 0 Unchecked, 31.48ms Time], IncrementalHoareTripleChecker [22 Valid, 5331 Invalid, 2 Unknown, 0 Unchecked, 41492.70ms Time] [2021-11-02 17:13:02,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18953 states. [2021-11-02 17:13:02,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18953 to 18926. [2021-11-02 17:13:02,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18926 states, 18915 states have (on average 1.3549563838223633) internal successors, (25629), 18925 states have internal predecessors, (25629), 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) [2021-11-02 17:13:02,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18926 states to 18926 states and 25629 transitions. [2021-11-02 17:13:02,742 INFO L78 Accepts]: Start accepts. Automaton has 18926 states and 25629 transitions. Word has length 33 [2021-11-02 17:13:02,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:13:02,742 INFO L470 AbstractCegarLoop]: Abstraction has 18926 states and 25629 transitions. [2021-11-02 17:13:02,743 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) [2021-11-02 17:13:02,743 INFO L276 IsEmpty]: Start isEmpty. Operand 18926 states and 25629 transitions. [2021-11-02 17:13:02,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-02 17:13:02,744 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:13:02,744 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 17:13:02,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 17:13:02,744 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 17:13:02,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:13:02,745 INFO L85 PathProgramCache]: Analyzing trace with hash -2053211790, now seen corresponding path program 1 times [2021-11-02 17:13:02,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:13:02,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191901792] [2021-11-02 17:13:02,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:13:02,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:13:03,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:13:03,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 17:13:03,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:13:03,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191901792] [2021-11-02 17:13:03,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191901792] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:13:03,239 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 17:13:03,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 17:13:03,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881826625] [2021-11-02 17:13:03,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:13:03,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:13:03,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:13:03,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:13:03,240 INFO L87 Difference]: Start difference. First operand 18926 states and 25629 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2021-11-02 17:13:05,441 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:13:17,998 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:13:34,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:13:34,046 INFO L93 Difference]: Finished difference Result 40512 states and 55129 transitions. [2021-11-02 17:13:34,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:13:34,048 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 45 [2021-11-02 17:13:34,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:13:34,076 INFO L225 Difference]: With dead ends: 40512 [2021-11-02 17:13:34,076 INFO L226 Difference]: Without dead ends: 21589 [2021-11-02 17:13:34,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.93ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:13:34,134 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 336 mSDsluCounter, 1843 mSDsCounter, 0 mSdLazyCounter, 3708 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27878.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.12ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 3708 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30214.54ms IncrementalHoareTripleChecker+Time [2021-11-02 17:13:34,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [336 Valid, 0 Invalid, 3714 Unknown, 0 Unchecked, 16.12ms Time], IncrementalHoareTripleChecker [4 Valid, 3708 Invalid, 2 Unknown, 0 Unchecked, 30214.54ms Time] [2021-11-02 17:13:34,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21589 states. [2021-11-02 17:13:34,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21589 to 21510. [2021-11-02 17:13:34,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21510 states, 21499 states have (on average 1.3676450067444998) internal successors, (29403), 21509 states have internal predecessors, (29403), 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) [2021-11-02 17:13:34,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21510 states to 21510 states and 29403 transitions. [2021-11-02 17:13:34,582 INFO L78 Accepts]: Start accepts. Automaton has 21510 states and 29403 transitions. Word has length 45 [2021-11-02 17:13:34,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:13:34,582 INFO L470 AbstractCegarLoop]: Abstraction has 21510 states and 29403 transitions. [2021-11-02 17:13:34,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2021-11-02 17:13:34,582 INFO L276 IsEmpty]: Start isEmpty. Operand 21510 states and 29403 transitions. [2021-11-02 17:13:34,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-02 17:13:34,584 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:13:34,584 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 17:13:34,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 17:13:34,584 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 17:13:34,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:13:34,585 INFO L85 PathProgramCache]: Analyzing trace with hash -234060580, now seen corresponding path program 1 times [2021-11-02 17:13:34,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:13:34,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831589002] [2021-11-02 17:13:34,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:13:34,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:13:34,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:13:35,190 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-02 17:13:35,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:13:35,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831589002] [2021-11-02 17:13:35,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831589002] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:13:35,191 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 17:13:35,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 17:13:35,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556337820] [2021-11-02 17:13:35,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:13:35,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:13:35,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:13:35,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:13:35,191 INFO L87 Difference]: Start difference. First operand 21510 states and 29403 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2021-11-02 17:13:37,415 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:13:52,307 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:14:19,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:14:19,014 INFO L93 Difference]: Finished difference Result 49988 states and 68612 transitions. [2021-11-02 17:14:19,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:14:19,017 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 54 [2021-11-02 17:14:19,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:14:19,058 INFO L225 Difference]: With dead ends: 49988 [2021-11-02 17:14:19,059 INFO L226 Difference]: Without dead ends: 28481 [2021-11-02 17:14:19,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.12ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:14:19,079 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1732 mSDsluCounter, 1744 mSDsCounter, 0 mSdLazyCounter, 5348 mSolverCounterSat, 23 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39702.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1732 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.73ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 5348 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42950.49ms IncrementalHoareTripleChecker+Time [2021-11-02 17:14:19,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1732 Valid, 0 Invalid, 5373 Unknown, 0 Unchecked, 25.73ms Time], IncrementalHoareTripleChecker [23 Valid, 5348 Invalid, 2 Unknown, 0 Unchecked, 42950.49ms Time] [2021-11-02 17:14:19,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28481 states. [2021-11-02 17:14:19,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28481 to 28454. [2021-11-02 17:14:19,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28454 states, 28443 states have (on average 1.3659248321203812) internal successors, (38851), 28453 states have internal predecessors, (38851), 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) [2021-11-02 17:14:19,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28454 states to 28454 states and 38851 transitions. [2021-11-02 17:14:19,693 INFO L78 Accepts]: Start accepts. Automaton has 28454 states and 38851 transitions. Word has length 54 [2021-11-02 17:14:19,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:14:19,693 INFO L470 AbstractCegarLoop]: Abstraction has 28454 states and 38851 transitions. [2021-11-02 17:14:19,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2021-11-02 17:14:19,693 INFO L276 IsEmpty]: Start isEmpty. Operand 28454 states and 38851 transitions. [2021-11-02 17:14:19,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-02 17:14:19,696 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:14:19,696 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, 1, 1] [2021-11-02 17:14:19,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-02 17:14:19,696 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 17:14:19,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:14:19,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1153792279, now seen corresponding path program 1 times [2021-11-02 17:14:19,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:14:19,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361412621] [2021-11-02 17:14:19,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:14:19,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:14:20,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:14:20,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 17:14:20,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:14:20,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361412621] [2021-11-02 17:14:20,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361412621] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:14:20,281 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 17:14:20,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 17:14:20,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125957993] [2021-11-02 17:14:20,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:14:20,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:14:20,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:14:20,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:14:20,282 INFO L87 Difference]: Start difference. First operand 28454 states and 38851 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2021-11-02 17:14:22,511 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:14:34,833 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:14:51,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:14:51,687 INFO L93 Difference]: Finished difference Result 56921 states and 77731 transitions. [2021-11-02 17:14:51,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:14:51,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 69 [2021-11-02 17:14:51,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:14:51,732 INFO L225 Difference]: With dead ends: 56921 [2021-11-02 17:14:51,733 INFO L226 Difference]: Without dead ends: 28470 [2021-11-02 17:14:51,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.93ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:14:51,760 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 1850 mSDsCounter, 0 mSdLazyCounter, 3711 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28310.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.61ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3711 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30696.51ms IncrementalHoareTripleChecker+Time [2021-11-02 17:14:51,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 3713 Unknown, 0 Unchecked, 16.61ms Time], IncrementalHoareTripleChecker [0 Valid, 3711 Invalid, 2 Unknown, 0 Unchecked, 30696.51ms Time] [2021-11-02 17:14:51,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28470 states. [2021-11-02 17:14:52,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28470 to 28470. [2021-11-02 17:14:52,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28470 states, 28459 states have (on average 1.3657191046769037) internal successors, (38867), 28469 states have internal predecessors, (38867), 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) [2021-11-02 17:14:52,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28470 states to 28470 states and 38867 transitions. [2021-11-02 17:14:52,426 INFO L78 Accepts]: Start accepts. Automaton has 28470 states and 38867 transitions. Word has length 69 [2021-11-02 17:14:52,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:14:52,427 INFO L470 AbstractCegarLoop]: Abstraction has 28470 states and 38867 transitions. [2021-11-02 17:14:52,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2021-11-02 17:14:52,428 INFO L276 IsEmpty]: Start isEmpty. Operand 28470 states and 38867 transitions. [2021-11-02 17:14:52,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-02 17:14:52,449 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:14:52,449 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, 1, 1] [2021-11-02 17:14:52,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-02 17:14:52,450 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 17:14:52,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:14:52,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1155639321, now seen corresponding path program 1 times [2021-11-02 17:14:52,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:14:52,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131161646] [2021-11-02 17:14:52,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:14:52,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:14:52,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:14:53,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 17:14:53,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:14:53,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131161646] [2021-11-02 17:14:53,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131161646] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:14:53,273 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 17:14:53,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 17:14:53,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352573663] [2021-11-02 17:14:53,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:14:53,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:14:53,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:14:53,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:14:53,274 INFO L87 Difference]: Start difference. First operand 28470 states and 38867 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2021-11-02 17:14:55,491 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:15:08,798 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:15:21,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:15:21,689 INFO L93 Difference]: Finished difference Result 60509 states and 82675 transitions. [2021-11-02 17:15:21,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:15:21,691 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 69 [2021-11-02 17:15:21,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:15:21,733 INFO L225 Difference]: With dead ends: 60509 [2021-11-02 17:15:21,734 INFO L226 Difference]: Without dead ends: 32042 [2021-11-02 17:15:21,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.47ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:15:21,761 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1760 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 3073 mSolverCounterSat, 13 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25112.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1760 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.28ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 3073 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27523.24ms IncrementalHoareTripleChecker+Time [2021-11-02 17:15:21,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1760 Valid, 0 Invalid, 3088 Unknown, 0 Unchecked, 15.28ms Time], IncrementalHoareTripleChecker [13 Valid, 3073 Invalid, 2 Unknown, 0 Unchecked, 27523.24ms Time] [2021-11-02 17:15:21,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32042 states. [2021-11-02 17:15:22,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32042 to 31713. [2021-11-02 17:15:22,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31713 states, 31703 states have (on average 1.368040879412043) internal successors, (43371), 31712 states have internal predecessors, (43371), 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) [2021-11-02 17:15:22,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31713 states to 31713 states and 43371 transitions. [2021-11-02 17:15:22,492 INFO L78 Accepts]: Start accepts. Automaton has 31713 states and 43371 transitions. Word has length 69 [2021-11-02 17:15:22,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:15:22,492 INFO L470 AbstractCegarLoop]: Abstraction has 31713 states and 43371 transitions. [2021-11-02 17:15:22,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2021-11-02 17:15:22,493 INFO L276 IsEmpty]: Start isEmpty. Operand 31713 states and 43371 transitions. [2021-11-02 17:15:22,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-02 17:15:22,496 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:15:22,496 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 17:15:22,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-02 17:15:22,496 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 17:15:22,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:15:22,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1383268386, now seen corresponding path program 1 times [2021-11-02 17:15:22,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:15:22,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332760418] [2021-11-02 17:15:22,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:15:22,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:15:22,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:15:23,081 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 17:15:23,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:15:23,081 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332760418] [2021-11-02 17:15:23,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332760418] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 17:15:23,081 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411946264] [2021-11-02 17:15:23,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:15:23,081 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 17:15:23,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 17:15:23,083 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) [2021-11-02 17:15:23,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 17:15:25,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:15:25,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 12893 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 17:15:25,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 17:15:26,838 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-02 17:15:26,838 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 17:15:26,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411946264] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:15:26,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 17:15:26,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2021-11-02 17:15:26,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114179606] [2021-11-02 17:15:26,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 17:15:26,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:15:26,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 17:15:26,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-02 17:15:26,839 INFO L87 Difference]: Start difference. First operand 31713 states and 43371 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 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) [2021-11-02 17:15:29,040 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:16:21,655 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:17:59,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:17:59,731 INFO L93 Difference]: Finished difference Result 93142 states and 127472 transitions. [2021-11-02 17:17:59,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 17:17:59,736 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 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 73 [2021-11-02 17:17:59,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:17:59,837 INFO L225 Difference]: With dead ends: 93142 [2021-11-02 17:17:59,837 INFO L226 Difference]: Without dead ends: 61392 [2021-11-02 17:17:59,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1068.55ms TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2021-11-02 17:17:59,879 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3758 mSDsluCounter, 18422 mSDsCounter, 0 mSdLazyCounter, 22225 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 144213.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3758 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 22231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 156.35ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22225 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 150498.10ms IncrementalHoareTripleChecker+Time [2021-11-02 17:17:59,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3758 Valid, 0 Invalid, 22231 Unknown, 0 Unchecked, 156.35ms Time], IncrementalHoareTripleChecker [4 Valid, 22225 Invalid, 2 Unknown, 0 Unchecked, 150498.10ms Time] [2021-11-02 17:17:59,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61392 states. [2021-11-02 17:18:00,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61392 to 31728. [2021-11-02 17:18:00,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31728 states, 31718 states have (on average 1.3671101582697522) internal successors, (43362), 31727 states have internal predecessors, (43362), 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) [2021-11-02 17:18:00,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31728 states to 31728 states and 43362 transitions. [2021-11-02 17:18:00,806 INFO L78 Accepts]: Start accepts. Automaton has 31728 states and 43362 transitions. Word has length 73 [2021-11-02 17:18:00,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:18:00,806 INFO L470 AbstractCegarLoop]: Abstraction has 31728 states and 43362 transitions. [2021-11-02 17:18:00,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 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) [2021-11-02 17:18:00,806 INFO L276 IsEmpty]: Start isEmpty. Operand 31728 states and 43362 transitions. [2021-11-02 17:18:00,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-02 17:18:00,809 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:18:00,809 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 17:18:00,849 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-02 17:18:01,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-02 17:18:01,036 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 17:18:01,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:18:01,036 INFO L85 PathProgramCache]: Analyzing trace with hash -860246004, now seen corresponding path program 1 times [2021-11-02 17:18:01,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:18:01,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683096232] [2021-11-02 17:18:01,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:18:01,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:18:01,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:18:01,849 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-02 17:18:01,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:18:01,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683096232] [2021-11-02 17:18:01,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683096232] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:18:01,850 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 17:18:01,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 17:18:01,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723851399] [2021-11-02 17:18:01,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 17:18:01,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:18:01,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 17:18:01,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 17:18:01,850 INFO L87 Difference]: Start difference. First operand 31728 states and 43362 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2021-11-02 17:18:04,069 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:18:31,016 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:19:21,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:19:21,269 INFO L93 Difference]: Finished difference Result 149296 states and 204334 transitions. [2021-11-02 17:19:21,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 17:19:21,272 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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 85 [2021-11-02 17:19:21,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:19:21,580 INFO L225 Difference]: With dead ends: 149296 [2021-11-02 17:19:21,581 INFO L226 Difference]: Without dead ends: 117571 [2021-11-02 17:19:21,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 149.24ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 17:19:21,696 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 5374 mSDsluCounter, 5747 mSDsCounter, 0 mSdLazyCounter, 9705 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 70078.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5374 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 9715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 70.18ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 9705 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 76135.77ms IncrementalHoareTripleChecker+Time [2021-11-02 17:19:21,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5374 Valid, 0 Invalid, 9715 Unknown, 0 Unchecked, 70.18ms Time], IncrementalHoareTripleChecker [8 Valid, 9705 Invalid, 2 Unknown, 0 Unchecked, 76135.77ms Time] [2021-11-02 17:19:21,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117571 states. [2021-11-02 17:19:23,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117571 to 31768. [2021-11-02 17:19:23,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31768 states, 31758 states have (on average 1.3666477737892815) internal successors, (43402), 31767 states have internal predecessors, (43402), 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) [2021-11-02 17:19:23,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31768 states to 31768 states and 43402 transitions. [2021-11-02 17:19:23,121 INFO L78 Accepts]: Start accepts. Automaton has 31768 states and 43402 transitions. Word has length 85 [2021-11-02 17:19:23,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:19:23,121 INFO L470 AbstractCegarLoop]: Abstraction has 31768 states and 43402 transitions. [2021-11-02 17:19:23,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2021-11-02 17:19:23,121 INFO L276 IsEmpty]: Start isEmpty. Operand 31768 states and 43402 transitions. [2021-11-02 17:19:23,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-02 17:19:23,124 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:19:23,124 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 17:19:23,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-02 17:19:23,125 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 17:19:23,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:19:23,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1508724510, now seen corresponding path program 1 times [2021-11-02 17:19:23,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:19:23,125 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797214842] [2021-11-02 17:19:23,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:19:23,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:19:23,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:19:23,579 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-02 17:19:23,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:19:23,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797214842] [2021-11-02 17:19:23,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797214842] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:19:23,579 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 17:19:23,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 17:19:23,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356680404] [2021-11-02 17:19:23,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:19:23,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:19:23,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:19:23,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:19:23,580 INFO L87 Difference]: Start difference. First operand 31768 states and 43402 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2021-11-02 17:19:25,791 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:19:38,756 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:20:01,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:20:01,824 INFO L93 Difference]: Finished difference Result 93039 states and 127209 transitions. [2021-11-02 17:20:01,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:20:01,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 87 [2021-11-02 17:20:01,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:20:01,923 INFO L225 Difference]: With dead ends: 93039 [2021-11-02 17:20:01,923 INFO L226 Difference]: Without dead ends: 61274 [2021-11-02 17:20:01,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.27ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:20:01,956 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1830 mSDsluCounter, 1850 mSDsCounter, 0 mSdLazyCounter, 3734 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31218.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1830 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.74ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3734 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35740.26ms IncrementalHoareTripleChecker+Time [2021-11-02 17:20:01,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1830 Valid, 0 Invalid, 3738 Unknown, 0 Unchecked, 19.74ms Time], IncrementalHoareTripleChecker [2 Valid, 3734 Invalid, 2 Unknown, 0 Unchecked, 35740.26ms Time] [2021-11-02 17:20:01,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61274 states. [2021-11-02 17:20:03,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61274 to 60858. [2021-11-02 17:20:03,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60858 states, 60848 states have (on average 1.3682290297133841) internal successors, (83254), 60857 states have internal predecessors, (83254), 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) [2021-11-02 17:20:03,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60858 states to 60858 states and 83254 transitions. [2021-11-02 17:20:03,872 INFO L78 Accepts]: Start accepts. Automaton has 60858 states and 83254 transitions. Word has length 87 [2021-11-02 17:20:03,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:20:03,875 INFO L470 AbstractCegarLoop]: Abstraction has 60858 states and 83254 transitions. [2021-11-02 17:20:03,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2021-11-02 17:20:03,876 INFO L276 IsEmpty]: Start isEmpty. Operand 60858 states and 83254 transitions. [2021-11-02 17:20:03,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-02 17:20:03,880 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:20:03,880 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 17:20:03,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-02 17:20:03,880 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 17:20:03,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:20:03,881 INFO L85 PathProgramCache]: Analyzing trace with hash 962307733, now seen corresponding path program 1 times [2021-11-02 17:20:03,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:20:03,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032500312] [2021-11-02 17:20:03,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:20:03,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:20:04,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:20:04,629 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 17:20:04,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:20:04,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032500312] [2021-11-02 17:20:04,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032500312] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 17:20:04,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426341028] [2021-11-02 17:20:04,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:20:04,629 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 17:20:04,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 17:20:04,673 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) [2021-11-02 17:20:04,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-02 17:20:07,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:20:07,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 12994 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 17:20:07,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 17:20:08,734 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 17:20:08,734 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 17:20:08,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426341028] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:20:08,735 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 17:20:08,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2021-11-02 17:20:08,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293929152] [2021-11-02 17:20:08,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 17:20:08,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:20:08,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 17:20:08,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 17:20:08,735 INFO L87 Difference]: Start difference. First operand 60858 states and 83254 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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) [2021-11-02 17:20:10,934 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15