./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point_ldv-val-v0.8.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-validator-v0.8/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point_ldv-val-v0.8.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 4b03525ec5447375a01688a728ac5f10add5f84664db60bd75967c00682bdc6d --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 20:00:37,607 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 20:00:37,609 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 20:00:37,628 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 20:00:37,629 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 20:00:37,630 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 20:00:37,631 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 20:00:37,632 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 20:00:37,633 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 20:00:37,634 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 20:00:37,634 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 20:00:37,635 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 20:00:37,635 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 20:00:37,636 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 20:00:37,637 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 20:00:37,638 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 20:00:37,638 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 20:00:37,639 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 20:00:37,640 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 20:00:37,642 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 20:00:37,643 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 20:00:37,648 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 20:00:37,649 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 20:00:37,650 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 20:00:37,652 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 20:00:37,652 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 20:00:37,652 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 20:00:37,653 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 20:00:37,653 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 20:00:37,654 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 20:00:37,654 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 20:00:37,655 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 20:00:37,655 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 20:00:37,656 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 20:00:37,657 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 20:00:37,657 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 20:00:37,657 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 20:00:37,658 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 20:00:37,658 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 20:00:37,658 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 20:00:37,659 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 20:00:37,673 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 20:00:37,703 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 20:00:37,703 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 20:00:37,704 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 20:00:37,704 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 20:00:37,705 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 20:00:37,705 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 20:00:37,705 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 20:00:37,705 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 20:00:37,705 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 20:00:37,705 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 20:00:37,706 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 20:00:37,706 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 20:00:37,706 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 20:00:37,706 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 20:00:37,706 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 20:00:37,706 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 20:00:37,706 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 20:00:37,707 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 20:00:37,707 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 20:00:37,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 20:00:37,707 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 20:00:37,707 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 20:00:37,707 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 20:00:37,707 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 20:00:37,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 20:00:37,708 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 20:00:37,708 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 20:00:37,708 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 20:00:37,708 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 20:00:37,708 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b03525ec5447375a01688a728ac5f10add5f84664db60bd75967c00682bdc6d [2021-11-02 20:00:37,906 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 20:00:37,934 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 20:00:37,935 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 20:00:37,936 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 20:00:37,937 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 20:00:37,938 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-02 20:00:38,017 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2aac02de9/a68322cc71c147d98893fbb684f2e67d/FLAG04b784b85 [2021-11-02 20:00:38,674 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 20:00:38,674 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-02 20:00:38,705 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2aac02de9/a68322cc71c147d98893fbb684f2e67d/FLAG04b784b85 [2021-11-02 20:00:38,986 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2aac02de9/a68322cc71c147d98893fbb684f2e67d [2021-11-02 20:00:38,989 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 20:00:38,990 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 20:00:38,994 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 20:00:38,994 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 20:00:38,997 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 20:00:38,997 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:00:38" (1/1) ... [2021-11-02 20:00:38,998 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e3596a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:00:38, skipping insertion in model container [2021-11-02 20:00:38,998 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:00:38" (1/1) ... [2021-11-02 20:00:39,003 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 20:00:39,079 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 20:00:40,231 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-validator-v0.8/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point_ldv-val-v0.8.cil.out.i[212825,212838] [2021-11-02 20:00:40,324 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 20:00:40,354 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 20:00:40,604 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-validator-v0.8/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point_ldv-val-v0.8.cil.out.i[212825,212838] [2021-11-02 20:00:40,617 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 20:00:40,679 INFO L208 MainTranslator]: Completed translation [2021-11-02 20:00:40,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:00:40 WrapperNode [2021-11-02 20:00:40,680 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 20:00:40,682 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 20:00:40,682 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 20:00:40,682 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 20:00:40,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:00:40" (1/1) ... [2021-11-02 20:00:40,766 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:00:40" (1/1) ... [2021-11-02 20:00:41,002 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 20:00:41,003 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 20:00:41,004 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 20:00:41,004 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 20:00:41,010 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:00:40" (1/1) ... [2021-11-02 20:00:41,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:00:40" (1/1) ... [2021-11-02 20:00:41,094 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:00:40" (1/1) ... [2021-11-02 20:00:41,096 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:00:40" (1/1) ... [2021-11-02 20:00:41,238 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:00:40" (1/1) ... [2021-11-02 20:00:41,273 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:00:40" (1/1) ... [2021-11-02 20:00:41,306 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:00:40" (1/1) ... [2021-11-02 20:00:41,406 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 20:00:41,407 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 20:00:41,407 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 20:00:41,407 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 20:00:41,408 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:00:40" (1/1) ... [2021-11-02 20:00:41,417 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 20:00:41,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 20:00:41,436 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 20:00:41,478 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 20:00:41,489 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-02 20:00:41,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-02 20:00:41,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-02 20:00:41,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 20:00:41,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 20:00:41,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 20:00:41,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 20:00:41,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-02 20:00:41,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-02 20:00:41,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 20:00:41,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 20:00:41,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 20:00:41,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 20:00:41,490 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-02 20:00:41,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 20:00:41,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 20:00:41,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 20:00:51,670 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 20:00:51,671 INFO L299 CfgBuilder]: Removed 1764 assume(true) statements. [2021-11-02 20:00:51,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:00:51 BoogieIcfgContainer [2021-11-02 20:00:51,674 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 20:00:51,675 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 20:00:51,675 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 20:00:51,677 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 20:00:51,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:00:38" (1/3) ... [2021-11-02 20:00:51,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e4cabbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:00:51, skipping insertion in model container [2021-11-02 20:00:51,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:00:40" (2/3) ... [2021-11-02 20:00:51,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e4cabbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:00:51, skipping insertion in model container [2021-11-02 20:00:51,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:00:51" (3/3) ... [2021-11-02 20:00:51,680 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-02 20:00:51,685 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 20:00:51,685 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 71 error locations. [2021-11-02 20:00:51,726 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 20:00:51,731 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 20:00:51,732 INFO L340 AbstractCegarLoop]: Starting to check reachability of 71 error locations. [2021-11-02 20:00:51,767 INFO L276 IsEmpty]: Start isEmpty. Operand has 2037 states, 1965 states have (on average 1.4600508905852416) internal successors, (2869), 2036 states have internal predecessors, (2869), 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 20:00:51,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-02 20:00:51,775 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:00:51,775 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, 1, 1, 1, 1, 1, 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 20:00:51,776 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-02 20:00:51,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:00:51,779 INFO L85 PathProgramCache]: Analyzing trace with hash -107109679, now seen corresponding path program 1 times [2021-11-02 20:00:51,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:00:51,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449956853] [2021-11-02 20:00:51,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:00:51,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:00:52,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:00:52,285 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 20:00:52,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:00:52,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449956853] [2021-11-02 20:00:52,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449956853] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:00:52,287 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:00:52,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 20:00:52,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138966317] [2021-11-02 20:00:52,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 20:00:52,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:00:52,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 20:00:52,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 20:00:52,311 INFO L87 Difference]: Start difference. First operand has 2037 states, 1965 states have (on average 1.4600508905852416) internal successors, (2869), 2036 states have internal predecessors, (2869), 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 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 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 20:00:54,398 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:01:17,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:01:17,916 INFO L93 Difference]: Finished difference Result 4070 states and 5733 transitions. [2021-11-02 20:01:17,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 20:01:17,918 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 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 74 [2021-11-02 20:01:17,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:01:17,943 INFO L225 Difference]: With dead ends: 4070 [2021-11-02 20:01:17,943 INFO L226 Difference]: Without dead ends: 2026 [2021-11-02 20:01:17,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.02ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 20:01:17,956 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2736 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23179.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 2737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.98ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2736 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25244.13ms IncrementalHoareTripleChecker+Time [2021-11-02 20:01:17,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 7 Invalid, 2737 Unknown, 0 Unchecked, 23.98ms Time], IncrementalHoareTripleChecker [0 Valid, 2736 Invalid, 1 Unknown, 0 Unchecked, 25244.13ms Time] [2021-11-02 20:01:17,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2026 states. [2021-11-02 20:01:18,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2026 to 2026. [2021-11-02 20:01:18,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2026 states, 1955 states have (on average 1.3943734015345268) internal successors, (2726), 2025 states have internal predecessors, (2726), 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 20:01:18,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2026 states to 2026 states and 2726 transitions. [2021-11-02 20:01:18,048 INFO L78 Accepts]: Start accepts. Automaton has 2026 states and 2726 transitions. Word has length 74 [2021-11-02 20:01:18,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:01:18,048 INFO L470 AbstractCegarLoop]: Abstraction has 2026 states and 2726 transitions. [2021-11-02 20:01:18,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 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 20:01:18,049 INFO L276 IsEmpty]: Start isEmpty. Operand 2026 states and 2726 transitions. [2021-11-02 20:01:18,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-02 20:01:18,055 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:01:18,055 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, 1, 1, 1, 1, 1, 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 20:01:18,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 20:01:18,055 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-02 20:01:18,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:01:18,056 INFO L85 PathProgramCache]: Analyzing trace with hash -2011007137, now seen corresponding path program 1 times [2021-11-02 20:01:18,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:01:18,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450451979] [2021-11-02 20:01:18,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:01:18,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:01:18,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:01:18,620 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 20:01:18,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:01:18,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450451979] [2021-11-02 20:01:18,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450451979] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:01:18,620 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:01:18,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 20:01:18,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072590908] [2021-11-02 20:01:18,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 20:01:18,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:01:18,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 20:01:18,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:01:18,622 INFO L87 Difference]: Start difference. First operand 2026 states and 2726 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 20:01:20,746 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:02:01,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:02:01,196 INFO L93 Difference]: Finished difference Result 4018 states and 5423 transitions. [2021-11-02 20:02:01,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 20:02:01,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 74 [2021-11-02 20:02:01,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:02:01,203 INFO L225 Difference]: With dead ends: 4018 [2021-11-02 20:02:01,203 INFO L226 Difference]: Without dead ends: 2032 [2021-11-02 20:02:01,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 90.97ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:02:01,207 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 2698 mSDsCounter, 0 mSdLazyCounter, 5444 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40023.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 51.18ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 5444 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42206.06ms IncrementalHoareTripleChecker+Time [2021-11-02 20:02:01,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 5455 Unknown, 0 Unchecked, 51.18ms Time], IncrementalHoareTripleChecker [10 Valid, 5444 Invalid, 1 Unknown, 0 Unchecked, 42206.06ms Time] [2021-11-02 20:02:01,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2032 states. [2021-11-02 20:02:01,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2032 to 2032. [2021-11-02 20:02:01,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2032 states, 1961 states have (on average 1.3931667516573176) internal successors, (2732), 2031 states have internal predecessors, (2732), 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 20:02:01,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2032 states to 2032 states and 2732 transitions. [2021-11-02 20:02:01,237 INFO L78 Accepts]: Start accepts. Automaton has 2032 states and 2732 transitions. Word has length 74 [2021-11-02 20:02:01,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:02:01,238 INFO L470 AbstractCegarLoop]: Abstraction has 2032 states and 2732 transitions. [2021-11-02 20:02:01,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 20:02:01,238 INFO L276 IsEmpty]: Start isEmpty. Operand 2032 states and 2732 transitions. [2021-11-02 20:02:01,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-02 20:02:01,239 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:02:01,239 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:02:01,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 20:02:01,240 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-02 20:02:01,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:02:01,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1519191235, now seen corresponding path program 1 times [2021-11-02 20:02:01,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:02:01,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820687019] [2021-11-02 20:02:01,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:02:01,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:02:01,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:02:01,563 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 20:02:01,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:02:01,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820687019] [2021-11-02 20:02:01,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820687019] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:02:01,564 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:02:01,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 20:02:01,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215955503] [2021-11-02 20:02:01,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 20:02:01,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:02:01,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 20:02:01,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:02:01,565 INFO L87 Difference]: Start difference. First operand 2032 states and 2732 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 20:02:03,628 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:02:41,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:02:41,364 INFO L93 Difference]: Finished difference Result 4019 states and 5419 transitions. [2021-11-02 20:02:41,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 20:02:41,365 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 80 [2021-11-02 20:02:41,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:02:41,371 INFO L225 Difference]: With dead ends: 4019 [2021-11-02 20:02:41,371 INFO L226 Difference]: Without dead ends: 2035 [2021-11-02 20:02:41,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.60ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:02:41,374 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 2698 mSDsCounter, 0 mSdLazyCounter, 5447 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37470.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 37.46ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5447 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39525.11ms IncrementalHoareTripleChecker+Time [2021-11-02 20:02:41,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 5452 Unknown, 0 Unchecked, 37.46ms Time], IncrementalHoareTripleChecker [4 Valid, 5447 Invalid, 1 Unknown, 0 Unchecked, 39525.11ms Time] [2021-11-02 20:02:41,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2035 states. [2021-11-02 20:02:41,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2035 to 2035. [2021-11-02 20:02:41,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2035 states, 1964 states have (on average 1.3925661914460286) internal successors, (2735), 2034 states have internal predecessors, (2735), 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 20:02:41,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 2735 transitions. [2021-11-02 20:02:41,439 INFO L78 Accepts]: Start accepts. Automaton has 2035 states and 2735 transitions. Word has length 80 [2021-11-02 20:02:41,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:02:41,441 INFO L470 AbstractCegarLoop]: Abstraction has 2035 states and 2735 transitions. [2021-11-02 20:02:41,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 20:02:41,441 INFO L276 IsEmpty]: Start isEmpty. Operand 2035 states and 2735 transitions. [2021-11-02 20:02:41,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-02 20:02:41,442 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:02:41,442 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:02:41,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 20:02:41,442 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-02 20:02:41,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:02:41,444 INFO L85 PathProgramCache]: Analyzing trace with hash -402848714, now seen corresponding path program 1 times [2021-11-02 20:02:41,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:02:41,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602641417] [2021-11-02 20:02:41,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:02:41,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:02:41,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:02:41,770 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-02 20:02:41,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:02:41,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602641417] [2021-11-02 20:02:41,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602641417] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:02:41,771 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:02:41,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 20:02:41,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776463107] [2021-11-02 20:02:41,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 20:02:41,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:02:41,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 20:02:41,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:02:41,772 INFO L87 Difference]: Start difference. First operand 2035 states and 2735 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 20:02:43,898 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:03:24,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:03:24,024 INFO L93 Difference]: Finished difference Result 5429 states and 7312 transitions. [2021-11-02 20:03:24,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 20:03:24,025 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 83 [2021-11-02 20:03:24,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:03:24,036 INFO L225 Difference]: With dead ends: 5429 [2021-11-02 20:03:24,037 INFO L226 Difference]: Without dead ends: 3469 [2021-11-02 20:03:24,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.86ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:03:24,040 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1922 mSDsluCounter, 2706 mSDsCounter, 0 mSdLazyCounter, 5448 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39836.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1922 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 49.69ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5448 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41780.66ms IncrementalHoareTripleChecker+Time [2021-11-02 20:03:24,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1922 Valid, 0 Invalid, 5450 Unknown, 0 Unchecked, 49.69ms Time], IncrementalHoareTripleChecker [1 Valid, 5448 Invalid, 1 Unknown, 0 Unchecked, 41780.66ms Time] [2021-11-02 20:03:24,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3469 states. [2021-11-02 20:03:24,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3469 to 3333. [2021-11-02 20:03:24,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3333 states, 3262 states have (on average 1.4022072348252606) internal successors, (4574), 3332 states have internal predecessors, (4574), 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 20:03:24,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3333 states to 3333 states and 4574 transitions. [2021-11-02 20:03:24,093 INFO L78 Accepts]: Start accepts. Automaton has 3333 states and 4574 transitions. Word has length 83 [2021-11-02 20:03:24,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:03:24,093 INFO L470 AbstractCegarLoop]: Abstraction has 3333 states and 4574 transitions. [2021-11-02 20:03:24,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 20:03:24,094 INFO L276 IsEmpty]: Start isEmpty. Operand 3333 states and 4574 transitions. [2021-11-02 20:03:24,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-02 20:03:24,094 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:03:24,095 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:03:24,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 20:03:24,095 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-02 20:03:24,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:03:24,101 INFO L85 PathProgramCache]: Analyzing trace with hash -2036520606, now seen corresponding path program 1 times [2021-11-02 20:03:24,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:03:24,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820440284] [2021-11-02 20:03:24,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:03:24,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:03:24,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:03:24,422 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-02 20:03:24,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:03:24,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820440284] [2021-11-02 20:03:24,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820440284] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:03:24,423 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:03:24,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 20:03:24,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950129740] [2021-11-02 20:03:24,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 20:03:24,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:03:24,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 20:03:24,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:03:24,424 INFO L87 Difference]: Start difference. First operand 3333 states and 4574 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 20:03:26,482 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:04:11,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:04:11,665 INFO L93 Difference]: Finished difference Result 8377 states and 11562 transitions. [2021-11-02 20:04:11,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 20:04:11,666 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 84 [2021-11-02 20:04:11,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:04:11,679 INFO L225 Difference]: With dead ends: 8377 [2021-11-02 20:04:11,680 INFO L226 Difference]: Without dead ends: 5119 [2021-11-02 20:04:11,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.90ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:04:11,686 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1621 mSDsluCounter, 2701 mSDsCounter, 0 mSdLazyCounter, 6164 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44711.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1621 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 36.79ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6164 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46822.59ms IncrementalHoareTripleChecker+Time [2021-11-02 20:04:11,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1621 Valid, 0 Invalid, 6168 Unknown, 0 Unchecked, 36.79ms Time], IncrementalHoareTripleChecker [3 Valid, 6164 Invalid, 1 Unknown, 0 Unchecked, 46822.59ms Time] [2021-11-02 20:04:11,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5119 states. [2021-11-02 20:04:11,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5119 to 5015. [2021-11-02 20:04:11,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5015 states, 4944 states have (on average 1.4184870550161812) internal successors, (7013), 5014 states have internal predecessors, (7013), 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 20:04:11,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5015 states to 5015 states and 7013 transitions. [2021-11-02 20:04:11,777 INFO L78 Accepts]: Start accepts. Automaton has 5015 states and 7013 transitions. Word has length 84 [2021-11-02 20:04:11,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:04:11,777 INFO L470 AbstractCegarLoop]: Abstraction has 5015 states and 7013 transitions. [2021-11-02 20:04:11,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 20:04:11,778 INFO L276 IsEmpty]: Start isEmpty. Operand 5015 states and 7013 transitions. [2021-11-02 20:04:11,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-02 20:04:11,782 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:04:11,782 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:04:11,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 20:04:11,786 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr68ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-02 20:04:11,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:04:11,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1859126916, now seen corresponding path program 1 times [2021-11-02 20:04:11,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:04:11,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460496953] [2021-11-02 20:04:11,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:04:11,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:04:11,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:04:12,149 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-02 20:04:12,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:04:12,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460496953] [2021-11-02 20:04:12,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460496953] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:04:12,150 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:04:12,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 20:04:12,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945859941] [2021-11-02 20:04:12,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 20:04:12,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:04:12,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 20:04:12,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:04:12,152 INFO L87 Difference]: Start difference. First operand 5015 states and 7013 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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 20:04:14,221 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:04:59,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:04:59,019 INFO L93 Difference]: Finished difference Result 14824 states and 20796 transitions. [2021-11-02 20:04:59,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 20:04:59,020 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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 20:04:59,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:04:59,059 INFO L225 Difference]: With dead ends: 14824 [2021-11-02 20:04:59,060 INFO L226 Difference]: Without dead ends: 9884 [2021-11-02 20:04:59,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.42ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:04:59,079 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2594 mSDsluCounter, 2702 mSDsCounter, 0 mSdLazyCounter, 6153 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44087.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2594 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 41.46ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6153 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46324.01ms IncrementalHoareTripleChecker+Time [2021-11-02 20:04:59,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2594 Valid, 0 Invalid, 6157 Unknown, 0 Unchecked, 41.46ms Time], IncrementalHoareTripleChecker [3 Valid, 6153 Invalid, 1 Unknown, 0 Unchecked, 46324.01ms Time] [2021-11-02 20:04:59,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9884 states. [2021-11-02 20:04:59,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9884 to 9746. [2021-11-02 20:04:59,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9746 states, 9675 states have (on average 1.4248062015503875) internal successors, (13785), 9745 states have internal predecessors, (13785), 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 20:04:59,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9746 states to 9746 states and 13785 transitions. [2021-11-02 20:04:59,273 INFO L78 Accepts]: Start accepts. Automaton has 9746 states and 13785 transitions. Word has length 87 [2021-11-02 20:04:59,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:04:59,275 INFO L470 AbstractCegarLoop]: Abstraction has 9746 states and 13785 transitions. [2021-11-02 20:04:59,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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 20:04:59,275 INFO L276 IsEmpty]: Start isEmpty. Operand 9746 states and 13785 transitions. [2021-11-02 20:04:59,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-02 20:04:59,276 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:04:59,277 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:04:59,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 20:04:59,277 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr53ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-02 20:04:59,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:04:59,278 INFO L85 PathProgramCache]: Analyzing trace with hash -200181640, now seen corresponding path program 1 times [2021-11-02 20:04:59,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:04:59,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752023220] [2021-11-02 20:04:59,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:04:59,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:04:59,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:04:59,565 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-02 20:04:59,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:04:59,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752023220] [2021-11-02 20:04:59,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752023220] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:04:59,566 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:04:59,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 20:04:59,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754433030] [2021-11-02 20:04:59,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 20:04:59,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:04:59,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 20:04:59,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:04:59,567 INFO L87 Difference]: Start difference. First operand 9746 states and 13785 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 20:05:03,382 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.81s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:05:49,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:05:49,377 INFO L93 Difference]: Finished difference Result 26734 states and 37871 transitions. [2021-11-02 20:05:49,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 20:05:49,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 89 [2021-11-02 20:05:49,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:05:49,454 INFO L225 Difference]: With dead ends: 26734 [2021-11-02 20:05:49,455 INFO L226 Difference]: Without dead ends: 17063 [2021-11-02 20:05:49,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.73ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:05:49,470 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2183 mSDsluCounter, 2706 mSDsCounter, 0 mSdLazyCounter, 6171 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46792.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2183 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 40.26ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6171 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49236.52ms IncrementalHoareTripleChecker+Time [2021-11-02 20:05:49,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2183 Valid, 0 Invalid, 6173 Unknown, 0 Unchecked, 40.26ms Time], IncrementalHoareTripleChecker [1 Valid, 6171 Invalid, 1 Unknown, 0 Unchecked, 49236.52ms Time] [2021-11-02 20:05:49,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17063 states. [2021-11-02 20:05:49,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17063 to 16946. [2021-11-02 20:05:49,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16946 states, 16875 states have (on average 1.428088888888889) internal successors, (24099), 16945 states have internal predecessors, (24099), 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 20:05:49,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16946 states to 16946 states and 24099 transitions. [2021-11-02 20:05:49,890 INFO L78 Accepts]: Start accepts. Automaton has 16946 states and 24099 transitions. Word has length 89 [2021-11-02 20:05:49,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:05:49,891 INFO L470 AbstractCegarLoop]: Abstraction has 16946 states and 24099 transitions. [2021-11-02 20:05:49,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 20:05:49,891 INFO L276 IsEmpty]: Start isEmpty. Operand 16946 states and 24099 transitions. [2021-11-02 20:05:49,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-02 20:05:49,892 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:05:49,892 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:05:49,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 20:05:49,892 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr41ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-02 20:05:49,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:05:49,893 INFO L85 PathProgramCache]: Analyzing trace with hash 264831176, now seen corresponding path program 1 times [2021-11-02 20:05:49,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:05:49,893 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821096428] [2021-11-02 20:05:49,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:05:49,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:05:50,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:05:50,146 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-02 20:05:50,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:05:50,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821096428] [2021-11-02 20:05:50,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821096428] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:05:50,146 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:05:50,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 20:05:50,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354998656] [2021-11-02 20:05:50,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 20:05:50,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:05:50,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 20:05:50,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:05:50,147 INFO L87 Difference]: Start difference. First operand 16946 states and 24099 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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 20:05:52,202 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:06:42,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:06:42,992 INFO L93 Difference]: Finished difference Result 48178 states and 68456 transitions. [2021-11-02 20:06:42,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 20:06:42,993 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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 90 [2021-11-02 20:06:42,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:06:43,053 INFO L225 Difference]: With dead ends: 48178 [2021-11-02 20:06:43,054 INFO L226 Difference]: Without dead ends: 31307 [2021-11-02 20:06:43,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.60ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:06:43,076 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2392 mSDsluCounter, 2715 mSDsCounter, 0 mSdLazyCounter, 6595 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49283.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2392 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 40.65ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6595 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52010.04ms IncrementalHoareTripleChecker+Time [2021-11-02 20:06:43,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2392 Valid, 0 Invalid, 6597 Unknown, 0 Unchecked, 40.65ms Time], IncrementalHoareTripleChecker [1 Valid, 6595 Invalid, 1 Unknown, 0 Unchecked, 52010.04ms Time] [2021-11-02 20:06:43,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31307 states. [2021-11-02 20:06:43,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31307 to 31154. [2021-11-02 20:06:43,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31154 states, 31083 states have (on average 1.4263423736447576) internal successors, (44335), 31153 states have internal predecessors, (44335), 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 20:06:43,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31154 states to 31154 states and 44335 transitions. [2021-11-02 20:06:43,569 INFO L78 Accepts]: Start accepts. Automaton has 31154 states and 44335 transitions. Word has length 90 [2021-11-02 20:06:43,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:06:43,569 INFO L470 AbstractCegarLoop]: Abstraction has 31154 states and 44335 transitions. [2021-11-02 20:06:43,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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 20:06:43,571 INFO L276 IsEmpty]: Start isEmpty. Operand 31154 states and 44335 transitions. [2021-11-02 20:06:43,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-02 20:06:43,572 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:06:43,572 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:06:43,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 20:06:43,572 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr47ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-02 20:06:43,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:06:43,572 INFO L85 PathProgramCache]: Analyzing trace with hash -642383549, now seen corresponding path program 1 times [2021-11-02 20:06:43,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:06:43,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112728167] [2021-11-02 20:06:43,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:06:43,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:06:43,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:06:43,832 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-02 20:06:43,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:06:43,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112728167] [2021-11-02 20:06:43,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112728167] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:06:43,832 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:06:43,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 20:06:43,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414057929] [2021-11-02 20:06:43,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 20:06:43,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:06:43,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 20:06:43,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:06:43,837 INFO L87 Difference]: Start difference. First operand 31154 states and 44335 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 20:06:45,896 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:07:36,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:07:36,781 INFO L93 Difference]: Finished difference Result 89081 states and 126787 transitions. [2021-11-02 20:07:36,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 20:07:36,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 91 [2021-11-02 20:07:36,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:07:37,023 INFO L225 Difference]: With dead ends: 89081 [2021-11-02 20:07:37,023 INFO L226 Difference]: Without dead ends: 58002 [2021-11-02 20:07:37,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.39ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:07:37,059 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2422 mSDsluCounter, 2715 mSDsCounter, 0 mSdLazyCounter, 6830 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49115.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2422 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 41.26ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6830 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51822.31ms IncrementalHoareTripleChecker+Time [2021-11-02 20:07:37,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2422 Valid, 0 Invalid, 6832 Unknown, 0 Unchecked, 41.26ms Time], IncrementalHoareTripleChecker [1 Valid, 6830 Invalid, 1 Unknown, 0 Unchecked, 51822.31ms Time] [2021-11-02 20:07:37,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58002 states. [2021-11-02 20:07:37,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58002 to 57858. [2021-11-02 20:07:37,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57858 states, 57787 states have (on average 1.4263242597816117) internal successors, (82423), 57857 states have internal predecessors, (82423), 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 20:07:38,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57858 states to 57858 states and 82423 transitions. [2021-11-02 20:07:38,196 INFO L78 Accepts]: Start accepts. Automaton has 57858 states and 82423 transitions. Word has length 91 [2021-11-02 20:07:38,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:07:38,196 INFO L470 AbstractCegarLoop]: Abstraction has 57858 states and 82423 transitions. [2021-11-02 20:07:38,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 20:07:38,197 INFO L276 IsEmpty]: Start isEmpty. Operand 57858 states and 82423 transitions. [2021-11-02 20:07:38,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-02 20:07:38,197 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:07:38,197 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:07:38,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 20:07:38,198 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr68ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-02 20:07:38,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:07:38,198 INFO L85 PathProgramCache]: Analyzing trace with hash -662903403, now seen corresponding path program 1 times [2021-11-02 20:07:38,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:07:38,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429514798] [2021-11-02 20:07:38,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:07:38,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:07:38,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:07:38,438 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-02 20:07:38,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:07:38,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429514798] [2021-11-02 20:07:38,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429514798] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:07:38,439 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:07:38,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 20:07:38,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493491749] [2021-11-02 20:07:38,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 20:07:38,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:07:38,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 20:07:38,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:07:38,440 INFO L87 Difference]: Start difference. First operand 57858 states and 82423 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 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 20:07:40,626 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:07:54,950 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:08:08,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:08:08,167 INFO L93 Difference]: Finished difference Result 57858 states and 82423 transitions. [2021-11-02 20:08:08,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 20:08:08,168 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 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 99 [2021-11-02 20:08:08,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:08:08,264 INFO L225 Difference]: With dead ends: 57858 [2021-11-02 20:08:08,265 INFO L226 Difference]: Without dead ends: 57846 [2021-11-02 20:08:08,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.34ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:08:08,280 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1829 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 3495 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27326.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1829 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.14ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 3495 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28989.01ms IncrementalHoareTripleChecker+Time [2021-11-02 20:08:08,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1829 Valid, 0 Invalid, 3507 Unknown, 0 Unchecked, 19.14ms Time], IncrementalHoareTripleChecker [11 Valid, 3495 Invalid, 1 Unknown, 0 Unchecked, 28989.01ms Time] [2021-11-02 20:08:08,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57846 states. [2021-11-02 20:08:09,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57846 to 57846. [2021-11-02 20:08:09,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57846 states, 57781 states have (on average 1.423582146380298) internal successors, (82256), 57845 states have internal predecessors, (82256), 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 20:08:09,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57846 states to 57846 states and 82256 transitions. [2021-11-02 20:08:09,320 INFO L78 Accepts]: Start accepts. Automaton has 57846 states and 82256 transitions. Word has length 99 [2021-11-02 20:08:09,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:08:09,321 INFO L470 AbstractCegarLoop]: Abstraction has 57846 states and 82256 transitions. [2021-11-02 20:08:09,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 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 20:08:09,321 INFO L276 IsEmpty]: Start isEmpty. Operand 57846 states and 82256 transitions. [2021-11-02 20:08:09,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-02 20:08:09,322 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:08:09,322 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:08:09,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-02 20:08:09,322 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr69ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-02 20:08:09,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:08:09,323 INFO L85 PathProgramCache]: Analyzing trace with hash 924843792, now seen corresponding path program 1 times [2021-11-02 20:08:09,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:08:09,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752533569] [2021-11-02 20:08:09,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:08:09,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:08:09,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:08:09,590 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-02 20:08:09,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:08:09,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752533569] [2021-11-02 20:08:09,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752533569] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:08:09,591 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:08:09,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 20:08:09,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424323664] [2021-11-02 20:08:09,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 20:08:09,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:08:09,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 20:08:09,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:08:09,592 INFO L87 Difference]: Start difference. First operand 57846 states and 82256 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 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 20:08:11,653 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:08:48,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:08:48,224 INFO L93 Difference]: Finished difference Result 126941 states and 180448 transitions. [2021-11-02 20:08:48,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 20:08:48,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 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 100 [2021-11-02 20:08:48,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:08:48,362 INFO L225 Difference]: With dead ends: 126941 [2021-11-02 20:08:48,362 INFO L226 Difference]: Without dead ends: 69170 [2021-11-02 20:08:48,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.92ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:08:48,406 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 814 mSDsluCounter, 2127 mSDsCounter, 0 mSdLazyCounter, 4908 mSolverCounterSat, 74 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35374.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.73ms SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 4908 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37430.12ms IncrementalHoareTripleChecker+Time [2021-11-02 20:08:48,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [814 Valid, 0 Invalid, 4983 Unknown, 0 Unchecked, 26.73ms Time], IncrementalHoareTripleChecker [74 Valid, 4908 Invalid, 1 Unknown, 0 Unchecked, 37430.12ms Time] [2021-11-02 20:08:48,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69170 states. [2021-11-02 20:08:49,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69170 to 68480. [2021-11-02 20:08:49,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68480 states, 68425 states have (on average 1.4095140664961636) internal successors, (96446), 68479 states have internal predecessors, (96446), 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 20:08:49,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68480 states to 68480 states and 96446 transitions. [2021-11-02 20:08:49,629 INFO L78 Accepts]: Start accepts. Automaton has 68480 states and 96446 transitions. Word has length 100 [2021-11-02 20:08:49,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:08:49,630 INFO L470 AbstractCegarLoop]: Abstraction has 68480 states and 96446 transitions. [2021-11-02 20:08:49,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 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 20:08:49,630 INFO L276 IsEmpty]: Start isEmpty. Operand 68480 states and 96446 transitions. [2021-11-02 20:08:49,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-02 20:08:49,631 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:08:49,631 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:08:49,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-02 20:08:49,631 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr70ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-02 20:08:49,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:08:49,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1394600705, now seen corresponding path program 1 times [2021-11-02 20:08:49,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:08:49,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615443182] [2021-11-02 20:08:49,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:08:49,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:08:49,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:08:50,011 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-02 20:08:50,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:08:50,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615443182] [2021-11-02 20:08:50,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615443182] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:08:50,012 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:08:50,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 20:08:50,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752008461] [2021-11-02 20:08:50,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 20:08:50,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:08:50,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 20:08:50,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:08:50,013 INFO L87 Difference]: Start difference. First operand 68480 states and 96446 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 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 20:08:52,089 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:09:13,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:09:13,627 INFO L93 Difference]: Finished difference Result 68480 states and 96446 transitions. [2021-11-02 20:09:13,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 20:09:13,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 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 101 [2021-11-02 20:09:13,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:09:13,741 INFO L225 Difference]: With dead ends: 68480 [2021-11-02 20:09:13,741 INFO L226 Difference]: Without dead ends: 68473 [2021-11-02 20:09:13,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.61ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:09:13,759 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2579 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2677 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21158.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2579 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.50ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2677 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22703.47ms IncrementalHoareTripleChecker+Time [2021-11-02 20:09:13,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2579 Valid, 0 Invalid, 2678 Unknown, 0 Unchecked, 18.50ms Time], IncrementalHoareTripleChecker [0 Valid, 2677 Invalid, 1 Unknown, 0 Unchecked, 22703.47ms Time] [2021-11-02 20:09:13,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68473 states. [2021-11-02 20:09:14,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68473 to 68473. [2021-11-02 20:09:14,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68473 states, 68419 states have (on average 1.4088191876525527) internal successors, (96390), 68472 states have internal predecessors, (96390), 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 20:09:15,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68473 states to 68473 states and 96390 transitions. [2021-11-02 20:09:15,023 INFO L78 Accepts]: Start accepts. Automaton has 68473 states and 96390 transitions. Word has length 101 [2021-11-02 20:09:15,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:09:15,023 INFO L470 AbstractCegarLoop]: Abstraction has 68473 states and 96390 transitions. [2021-11-02 20:09:15,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 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 20:09:15,024 INFO L276 IsEmpty]: Start isEmpty. Operand 68473 states and 96390 transitions. [2021-11-02 20:09:15,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-02 20:09:15,025 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:09:15,025 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:09:15,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-02 20:09:15,026 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-02 20:09:15,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:09:15,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1687503101, now seen corresponding path program 1 times [2021-11-02 20:09:15,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:09:15,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127638995] [2021-11-02 20:09:15,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:09:15,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:09:15,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:09:15,407 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-02 20:09:15,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:09:15,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127638995] [2021-11-02 20:09:15,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127638995] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:09:15,407 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:09:15,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 20:09:15,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134141060] [2021-11-02 20:09:15,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 20:09:15,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:09:15,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 20:09:15,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:09:15,408 INFO L87 Difference]: Start difference. First operand 68473 states and 96390 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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 20:09:17,470 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:09:57,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:09:57,286 INFO L93 Difference]: Finished difference Result 103032 states and 145011 transitions. [2021-11-02 20:09:57,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 20:09:57,286 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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 128 [2021-11-02 20:09:57,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:09:57,328 INFO L225 Difference]: With dead ends: 103032 [2021-11-02 20:09:57,328 INFO L226 Difference]: Without dead ends: 34618 [2021-11-02 20:09:57,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.67ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:09:57,363 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4 mSDsluCounter, 2671 mSDsCounter, 0 mSdLazyCounter, 5353 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38792.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.18ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5353 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40892.48ms IncrementalHoareTripleChecker+Time [2021-11-02 20:09:57,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 0 Invalid, 5355 Unknown, 0 Unchecked, 25.18ms Time], IncrementalHoareTripleChecker [1 Valid, 5353 Invalid, 1 Unknown, 0 Unchecked, 40892.48ms Time] [2021-11-02 20:09:57,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34618 states. [2021-11-02 20:09:57,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34618 to 34239. [2021-11-02 20:09:57,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34239 states, 34185 states have (on average 1.4109697235629661) internal successors, (48234), 34238 states have internal predecessors, (48234), 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 20:09:57,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34239 states to 34239 states and 48234 transitions. [2021-11-02 20:09:57,929 INFO L78 Accepts]: Start accepts. Automaton has 34239 states and 48234 transitions. Word has length 128 [2021-11-02 20:09:57,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:09:57,930 INFO L470 AbstractCegarLoop]: Abstraction has 34239 states and 48234 transitions. [2021-11-02 20:09:57,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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 20:09:57,930 INFO L276 IsEmpty]: Start isEmpty. Operand 34239 states and 48234 transitions. [2021-11-02 20:09:57,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-02 20:09:57,932 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:09:57,932 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:09:57,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-02 20:09:57,932 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-02 20:09:57,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:09:57,933 INFO L85 PathProgramCache]: Analyzing trace with hash -366238442, now seen corresponding path program 1 times [2021-11-02 20:09:57,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:09:57,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532412378] [2021-11-02 20:09:57,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:09:57,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:09:58,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:09:58,171 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-02 20:09:58,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:09:58,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532412378] [2021-11-02 20:09:58,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532412378] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:09:58,172 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:09:58,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 20:09:58,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345882859] [2021-11-02 20:09:58,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 20:09:58,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:09:58,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 20:09:58,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:09:58,173 INFO L87 Difference]: Start difference. First operand 34239 states and 48234 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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 20:10:00,227 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:10:28,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:10:28,251 INFO L93 Difference]: Finished difference Result 68322 states and 96318 transitions. [2021-11-02 20:10:28,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 20:10:28,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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 146 [2021-11-02 20:10:28,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:10:28,305 INFO L225 Difference]: With dead ends: 68322 [2021-11-02 20:10:28,305 INFO L226 Difference]: Without dead ends: 34187 [2021-11-02 20:10:28,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.87ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:10:28,330 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2140 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 4033 mSolverCounterSat, 69 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27397.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2140 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.59ms SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 4033 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29169.90ms IncrementalHoareTripleChecker+Time [2021-11-02 20:10:28,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2140 Valid, 0 Invalid, 4103 Unknown, 0 Unchecked, 25.59ms Time], IncrementalHoareTripleChecker [69 Valid, 4033 Invalid, 1 Unknown, 0 Unchecked, 29169.90ms Time] [2021-11-02 20:10:28,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34187 states. [2021-11-02 20:10:28,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34187 to 33596. [2021-11-02 20:10:28,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33596 states, 33571 states have (on average 1.3956688808793303) internal successors, (46854), 33595 states have internal predecessors, (46854), 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 20:10:28,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33596 states to 33596 states and 46854 transitions. [2021-11-02 20:10:28,946 INFO L78 Accepts]: Start accepts. Automaton has 33596 states and 46854 transitions. Word has length 146 [2021-11-02 20:10:28,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:10:28,946 INFO L470 AbstractCegarLoop]: Abstraction has 33596 states and 46854 transitions. [2021-11-02 20:10:28,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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 20:10:28,946 INFO L276 IsEmpty]: Start isEmpty. Operand 33596 states and 46854 transitions. [2021-11-02 20:10:28,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-02 20:10:28,951 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:10:28,951 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:10:28,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-02 20:10:28,951 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-02 20:10:28,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:10:28,952 INFO L85 PathProgramCache]: Analyzing trace with hash 2139666670, now seen corresponding path program 1 times [2021-11-02 20:10:28,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:10:28,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700001238] [2021-11-02 20:10:28,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:10:28,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:10:29,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:10:29,272 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-02 20:10:29,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:10:29,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700001238] [2021-11-02 20:10:29,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700001238] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:10:29,273 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:10:29,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 20:10:29,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564734851] [2021-11-02 20:10:29,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 20:10:29,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:10:29,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 20:10:29,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:10:29,274 INFO L87 Difference]: Start difference. First operand 33596 states and 46854 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 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 20:10:31,345 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:11:04,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:11:04,835 INFO L93 Difference]: Finished difference Result 33596 states and 46854 transitions. [2021-11-02 20:11:04,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 20:11:04,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 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 152 [2021-11-02 20:11:04,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:11:04,886 INFO L225 Difference]: With dead ends: 33596 [2021-11-02 20:11:04,886 INFO L226 Difference]: Without dead ends: 33584 [2021-11-02 20:11:04,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.36ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:11:04,899 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 737 mSDsluCounter, 1844 mSDsCounter, 0 mSdLazyCounter, 4462 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33011.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.66ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 4462 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34914.71ms IncrementalHoareTripleChecker+Time [2021-11-02 20:11:04,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [737 Valid, 0 Invalid, 4472 Unknown, 0 Unchecked, 22.66ms Time], IncrementalHoareTripleChecker [9 Valid, 4462 Invalid, 1 Unknown, 0 Unchecked, 34914.71ms Time] [2021-11-02 20:11:04,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33584 states. [2021-11-02 20:11:05,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33584 to 33584. [2021-11-02 20:11:05,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33584 states, 33565 states have (on average 1.3914494264859227) internal successors, (46704), 33583 states have internal predecessors, (46704), 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 20:11:05,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33584 states to 33584 states and 46704 transitions. [2021-11-02 20:11:05,534 INFO L78 Accepts]: Start accepts. Automaton has 33584 states and 46704 transitions. Word has length 152 [2021-11-02 20:11:05,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:11:05,535 INFO L470 AbstractCegarLoop]: Abstraction has 33584 states and 46704 transitions. [2021-11-02 20:11:05,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 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 20:11:05,535 INFO L276 IsEmpty]: Start isEmpty. Operand 33584 states and 46704 transitions. [2021-11-02 20:11:05,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-02 20:11:05,583 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:11:05,583 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:11:05,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-02 20:11:05,584 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-02 20:11:05,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:11:05,584 INFO L85 PathProgramCache]: Analyzing trace with hash 990500777, now seen corresponding path program 1 times [2021-11-02 20:11:05,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:11:05,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645611301] [2021-11-02 20:11:05,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:11:05,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:11:05,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:11:06,212 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-02 20:11:06,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:11:06,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645611301] [2021-11-02 20:11:06,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645611301] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 20:11:06,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246849182] [2021-11-02 20:11:06,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:11:06,213 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 20:11:06,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 20:11:06,220 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 20:11:06,285 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 20:11:07,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:11:07,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 5216 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-02 20:11:07,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 20:11:08,713 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-02 20:11:08,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 20:11:09,678 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-02 20:11:09,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246849182] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 20:11:09,678 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-02 20:11:09,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2021-11-02 20:11:09,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999003753] [2021-11-02 20:11:09,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 20:11:09,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:11:09,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 20:11:09,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2021-11-02 20:11:09,679 INFO L87 Difference]: Start difference. First operand 33584 states and 46704 transitions. Second operand has 8 states, 8 states have (on average 21.625) internal successors, (173), 8 states have internal predecessors, (173), 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 20:11:11,739 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:11:50,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:11:50,465 INFO L93 Difference]: Finished difference Result 67148 states and 93408 transitions. [2021-11-02 20:11:50,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 20:11:50,465 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.625) internal successors, (173), 8 states have internal predecessors, (173), 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 169 [2021-11-02 20:11:50,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:11:50,513 INFO L225 Difference]: With dead ends: 67148 [2021-11-02 20:11:50,514 INFO L226 Difference]: Without dead ends: 33605 [2021-11-02 20:11:50,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 299.18ms TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2021-11-02 20:11:50,540 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 2579 mSDsCounter, 0 mSdLazyCounter, 5230 mSolverCounterSat, 87 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37794.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.72ms SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 5230 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39917.10ms IncrementalHoareTripleChecker+Time [2021-11-02 20:11:50,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 5318 Unknown, 0 Unchecked, 24.72ms Time], IncrementalHoareTripleChecker [87 Valid, 5230 Invalid, 1 Unknown, 0 Unchecked, 39917.10ms Time] [2021-11-02 20:11:50,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33605 states. [2021-11-02 20:11:51,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33605 to 33605. [2021-11-02 20:11:51,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33605 states, 33586 states have (on average 1.3912046686119217) internal successors, (46725), 33604 states have internal predecessors, (46725), 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 20:11:51,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33605 states to 33605 states and 46725 transitions. [2021-11-02 20:11:51,284 INFO L78 Accepts]: Start accepts. Automaton has 33605 states and 46725 transitions. Word has length 169 [2021-11-02 20:11:51,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:11:51,285 INFO L470 AbstractCegarLoop]: Abstraction has 33605 states and 46725 transitions. [2021-11-02 20:11:51,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.625) internal successors, (173), 8 states have internal predecessors, (173), 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 20:11:51,285 INFO L276 IsEmpty]: Start isEmpty. Operand 33605 states and 46725 transitions. [2021-11-02 20:11:51,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-02 20:11:51,299 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:11:51,299 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 20:11:51,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-02 20:11:51,515 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,SelfDestructingSolverStorable15 [2021-11-02 20:11:51,516 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-02 20:11:51,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:11:51,516 INFO L85 PathProgramCache]: Analyzing trace with hash 2102172082, now seen corresponding path program 2 times [2021-11-02 20:11:51,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:11:51,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253196666] [2021-11-02 20:11:51,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:11:51,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:11:51,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:11:52,336 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-02 20:11:52,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:11:52,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253196666] [2021-11-02 20:11:52,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253196666] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 20:11:52,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019968500] [2021-11-02 20:11:52,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 20:11:52,336 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 20:11:52,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 20:11:52,337 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 20:11:52,338 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 20:11:53,659 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-02 20:11:53,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 20:11:53,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 4604 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-02 20:11:53,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 20:11:54,262 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-02 20:11:54,263 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 20:11:54,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019968500] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:11:54,263 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 20:11:54,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2021-11-02 20:11:54,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073099453] [2021-11-02 20:11:54,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 20:11:54,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:11:54,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 20:11:54,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-02 20:11:54,264 INFO L87 Difference]: Start difference. First operand 33605 states and 46725 transitions. Second operand has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 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 20:11:56,327 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:13:24,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:13:24,132 INFO L93 Difference]: Finished difference Result 109565 states and 151708 transitions. [2021-11-02 20:13:24,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 20:13:24,133 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 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 190 [2021-11-02 20:13:24,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:13:24,267 INFO L225 Difference]: With dead ends: 109565 [2021-11-02 20:13:24,267 INFO L226 Difference]: Without dead ends: 76085 [2021-11-02 20:13:24,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 474.84ms TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-02 20:13:24,317 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 5167 mSDsluCounter, 6250 mSDsCounter, 0 mSdLazyCounter, 11651 mSolverCounterSat, 27 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 83869.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5167 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 11679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 122.11ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 11651 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 87899.01ms IncrementalHoareTripleChecker+Time [2021-11-02 20:13:24,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5167 Valid, 0 Invalid, 11679 Unknown, 0 Unchecked, 122.11ms Time], IncrementalHoareTripleChecker [27 Valid, 11651 Invalid, 1 Unknown, 0 Unchecked, 87899.01ms Time] [2021-11-02 20:13:24,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76085 states. [2021-11-02 20:13:25,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76085 to 33605. [2021-11-02 20:13:25,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33605 states, 33586 states have (on average 1.3902518906687311) internal successors, (46693), 33604 states have internal predecessors, (46693), 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 20:13:25,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33605 states to 33605 states and 46693 transitions. [2021-11-02 20:13:25,503 INFO L78 Accepts]: Start accepts. Automaton has 33605 states and 46693 transitions. Word has length 190 [2021-11-02 20:13:25,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:13:25,504 INFO L470 AbstractCegarLoop]: Abstraction has 33605 states and 46693 transitions. [2021-11-02 20:13:25,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 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 20:13:25,504 INFO L276 IsEmpty]: Start isEmpty. Operand 33605 states and 46693 transitions. [2021-11-02 20:13:25,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-02 20:13:25,519 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:13:25,519 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 20:13:25,559 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-02 20:13:25,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-02 20:13:25,740 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-02 20:13:25,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:13:25,741 INFO L85 PathProgramCache]: Analyzing trace with hash -2130755600, now seen corresponding path program 1 times [2021-11-02 20:13:25,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:13:25,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519361888] [2021-11-02 20:13:25,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:13:25,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:13:26,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:13:26,673 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-02 20:13:26,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:13:26,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519361888] [2021-11-02 20:13:26,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519361888] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 20:13:26,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989704279] [2021-11-02 20:13:26,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:13:26,674 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 20:13:26,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 20:13:26,676 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 20:13:26,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-02 20:13:28,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:13:28,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 5343 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-02 20:13:28,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 20:13:29,839 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-02 20:13:29,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 20:13:31,413 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-02 20:13:31,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989704279] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 20:13:31,414 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-02 20:13:31,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2021-11-02 20:13:31,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818365784] [2021-11-02 20:13:31,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-02 20:13:31,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:13:31,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-02 20:13:31,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=148, Unknown=0, NotChecked=0, Total=272 [2021-11-02 20:13:31,415 INFO L87 Difference]: Start difference. First operand 33605 states and 46693 transitions. Second operand has 17 states, 17 states have (on average 10.705882352941176) internal successors, (182), 17 states have internal predecessors, (182), 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 20:13:33,481 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:14:16,389 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:14:24,434 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15