./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.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 5e82a719a5cd0ec3a30cd42dbacb612fd330a6d3aa584d331bc796b2ce8b6a55 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 17:32:22,472 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 17:32:22,474 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 17:32:22,554 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 17:32:22,555 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 17:32:22,559 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 17:32:22,560 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 17:32:22,565 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 17:32:22,566 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 17:32:22,571 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 17:32:22,571 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 17:32:22,572 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 17:32:22,573 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 17:32:22,574 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 17:32:22,576 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 17:32:22,577 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 17:32:22,580 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 17:32:22,581 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 17:32:22,582 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 17:32:22,584 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 17:32:22,584 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 17:32:22,585 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 17:32:22,586 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 17:32:22,587 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 17:32:22,588 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 17:32:22,588 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 17:32:22,589 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 17:32:22,589 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 17:32:22,589 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 17:32:22,590 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 17:32:22,590 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 17:32:22,591 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 17:32:22,591 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 17:32:22,592 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 17:32:22,592 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 17:32:22,593 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 17:32:22,593 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 17:32:22,593 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 17:32:22,594 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 17:32:22,594 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 17:32:22,595 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 17:32:22,603 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 17:32:22,621 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 17:32:22,623 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 17:32:22,624 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 17:32:22,624 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 17:32:22,625 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 17:32:22,625 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 17:32:22,626 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 17:32:22,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 17:32:22,626 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 17:32:22,626 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 17:32:22,627 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 17:32:22,627 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 17:32:22,627 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 17:32:22,627 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 17:32:22,627 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 17:32:22,628 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 17:32:22,628 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 17:32:22,628 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 17:32:22,628 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 17:32:22,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 17:32:22,628 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 17:32:22,629 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 17:32:22,629 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 17:32:22,629 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 17:32:22,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 17:32:22,629 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 17:32:22,629 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 17:32:22,630 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 17:32:22,630 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 17:32:22,631 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5e82a719a5cd0ec3a30cd42dbacb612fd330a6d3aa584d331bc796b2ce8b6a55 [2021-11-07 17:32:22,858 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 17:32:22,886 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 17:32:22,888 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 17:32:22,889 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 17:32:22,890 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 17:32:22,891 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i [2021-11-07 17:32:22,950 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c4a730ec/846d8c120f54489ba6108880fe327f03/FLAG9148b84d7 [2021-11-07 17:32:23,589 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 17:32:23,590 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i [2021-11-07 17:32:23,640 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c4a730ec/846d8c120f54489ba6108880fe327f03/FLAG9148b84d7 [2021-11-07 17:32:23,692 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c4a730ec/846d8c120f54489ba6108880fe327f03 [2021-11-07 17:32:23,694 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 17:32:23,695 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 17:32:23,698 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 17:32:23,698 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 17:32:23,700 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 17:32:23,700 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:32:23" (1/1) ... [2021-11-07 17:32:23,702 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38a99327 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:32:23, skipping insertion in model container [2021-11-07 17:32:23,702 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:32:23" (1/1) ... [2021-11-07 17:32:23,731 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 17:32:23,816 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 17:32:25,730 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-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350019,350032] [2021-11-07 17:32:25,732 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-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350188,350201] [2021-11-07 17:32:25,732 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-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350355,350368] [2021-11-07 17:32:25,733 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-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350523,350536] [2021-11-07 17:32:25,750 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 17:32:25,787 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 17:32:26,059 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-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350019,350032] [2021-11-07 17:32:26,060 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-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350188,350201] [2021-11-07 17:32:26,060 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-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350355,350368] [2021-11-07 17:32:26,061 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-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350523,350536] [2021-11-07 17:32:26,067 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 17:32:26,194 INFO L208 MainTranslator]: Completed translation [2021-11-07 17:32:26,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:32:26 WrapperNode [2021-11-07 17:32:26,195 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 17:32:26,195 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 17:32:26,196 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 17:32:26,196 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 17:32:26,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:32:26" (1/1) ... [2021-11-07 17:32:26,274 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:32:26" (1/1) ... [2021-11-07 17:32:26,594 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 17:32:26,595 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 17:32:26,596 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 17:32:26,596 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 17:32:26,603 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:32:26" (1/1) ... [2021-11-07 17:32:26,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:32:26" (1/1) ... [2021-11-07 17:32:26,788 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:32:26" (1/1) ... [2021-11-07 17:32:26,792 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:32:26" (1/1) ... [2021-11-07 17:32:26,986 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:32:26" (1/1) ... [2021-11-07 17:32:27,107 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:32:26" (1/1) ... [2021-11-07 17:32:27,175 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:32:26" (1/1) ... [2021-11-07 17:32:27,240 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 17:32:27,242 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 17:32:27,242 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 17:32:27,242 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 17:32:27,243 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:32:26" (1/1) ... [2021-11-07 17:32:27,273 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 17:32:27,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 17:32:27,333 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) [2021-11-07 17:32:27,358 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 [2021-11-07 17:32:27,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 17:32:27,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 17:32:27,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 17:32:27,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 17:32:27,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 17:32:27,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 17:32:27,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 17:32:27,378 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 17:32:27,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 17:32:27,378 INFO L130 BoogieDeclarations]: Found specification of procedure check_sig [2021-11-07 17:32:27,378 INFO L138 BoogieDeclarations]: Found implementation of procedure check_sig [2021-11-07 17:32:27,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 17:32:27,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 17:32:50,166 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#4: ldv_switch_1_#res := 0; [2021-11-07 17:32:50,167 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-07 17:32:50,167 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-07 17:32:50,167 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-07 17:32:50,167 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-07 17:32:50,168 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-07 17:32:50,168 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-07 17:32:51,156 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 17:32:51,156 INFO L299 CfgBuilder]: Removed 3411 assume(true) statements. [2021-11-07 17:32:51,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:32:51 BoogieIcfgContainer [2021-11-07 17:32:51,159 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 17:32:51,160 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 17:32:51,161 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 17:32:51,164 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 17:32:51,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 05:32:23" (1/3) ... [2021-11-07 17:32:51,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e52d119 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:32:51, skipping insertion in model container [2021-11-07 17:32:51,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:32:26" (2/3) ... [2021-11-07 17:32:51,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e52d119 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:32:51, skipping insertion in model container [2021-11-07 17:32:51,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:32:51" (3/3) ... [2021-11-07 17:32:51,167 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i [2021-11-07 17:32:51,170 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 17:32:51,170 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 67 error locations. [2021-11-07 17:32:51,326 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 17:32:51,332 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 [2021-11-07 17:32:51,332 INFO L340 AbstractCegarLoop]: Starting to check reachability of 67 error locations. [2021-11-07 17:32:51,378 INFO L276 IsEmpty]: Start isEmpty. Operand has 3031 states, 2960 states have (on average 1.3179054054054054) internal successors, (3901), 3026 states have internal predecessors, (3901), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-07 17:32:51,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-07 17:32:51,384 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:32:51,385 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] [2021-11-07 17:32:51,386 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-07 17:32:51,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:32:51,389 INFO L85 PathProgramCache]: Analyzing trace with hash 619962046, now seen corresponding path program 1 times [2021-11-07 17:32:51,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:32:51,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352124269] [2021-11-07 17:32:51,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:32:51,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:32:51,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:32:52,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 17:32:52,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:32:52,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352124269] [2021-11-07 17:32:52,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352124269] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:32:52,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:32:52,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:32:52,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965523360] [2021-11-07 17:32:52,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:32:52,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:32:52,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:32:52,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:32:52,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:32:52,074 INFO L87 Difference]: Start difference. First operand has 3031 states, 2960 states have (on average 1.3179054054054054) internal successors, (3901), 3026 states have internal predecessors, (3901), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2021-11-07 17:32:54,173 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 [] [2021-11-07 17:32:54,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:32:54,721 INFO L93 Difference]: Finished difference Result 8635 states and 11145 transitions. [2021-11-07 17:32:54,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:32:54,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-07 17:32:54,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:32:54,752 INFO L225 Difference]: With dead ends: 8635 [2021-11-07 17:32:54,752 INFO L226 Difference]: Without dead ends: 5512 [2021-11-07 17:32:54,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.24ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:32:54,768 INFO L933 BasicCegarLoop]: 3836 mSDtfsCounter, 3476 mSDsluCounter, 3785 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2160.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3476 SdHoareTripleChecker+Valid, 7621 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.26ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2373.89ms IncrementalHoareTripleChecker+Time [2021-11-07 17:32:54,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3476 Valid, 7621 Invalid, 34 Unknown, 0 Unchecked, 33.26ms Time], IncrementalHoareTripleChecker [7 Valid, 26 Invalid, 1 Unknown, 0 Unchecked, 2373.89ms Time] [2021-11-07 17:32:54,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5512 states. [2021-11-07 17:32:54,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5512 to 5450. [2021-11-07 17:32:54,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5450 states, 5375 states have (on average 1.2673488372093022) internal successors, (6812), 5441 states have internal predecessors, (6812), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-07 17:32:54,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5450 states to 5450 states and 6824 transitions. [2021-11-07 17:32:54,995 INFO L78 Accepts]: Start accepts. Automaton has 5450 states and 6824 transitions. Word has length 54 [2021-11-07 17:32:54,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:32:54,996 INFO L470 AbstractCegarLoop]: Abstraction has 5450 states and 6824 transitions. [2021-11-07 17:32:54,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2021-11-07 17:32:54,997 INFO L276 IsEmpty]: Start isEmpty. Operand 5450 states and 6824 transitions. [2021-11-07 17:32:55,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 17:32:55,001 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:32:55,002 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] [2021-11-07 17:32:55,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 17:32:55,002 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-07 17:32:55,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:32:55,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1150160792, now seen corresponding path program 1 times [2021-11-07 17:32:55,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:32:55,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931199680] [2021-11-07 17:32:55,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:32:55,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:32:55,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:32:55,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 17:32:55,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:32:55,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931199680] [2021-11-07 17:32:55,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931199680] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:32:55,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:32:55,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:32:55,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673172968] [2021-11-07 17:32:55,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:32:55,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:32:55,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:32:55,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:32:55,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:32:55,319 INFO L87 Difference]: Start difference. First operand 5450 states and 6824 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2021-11-07 17:32:57,373 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 [] [2021-11-07 17:32:57,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:32:57,633 INFO L93 Difference]: Finished difference Result 10032 states and 12574 transitions. [2021-11-07 17:32:57,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:32:57,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 59 [2021-11-07 17:32:57,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:32:57,647 INFO L225 Difference]: With dead ends: 10032 [2021-11-07 17:32:57,648 INFO L226 Difference]: Without dead ends: 4682 [2021-11-07 17:32:57,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.58ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:32:57,660 INFO L933 BasicCegarLoop]: 3093 mSDtfsCounter, 2978 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2064.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2978 SdHoareTripleChecker+Valid, 3203 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.14ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2172.66ms IncrementalHoareTripleChecker+Time [2021-11-07 17:32:57,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2978 Valid, 3203 Invalid, 8 Unknown, 0 Unchecked, 7.14ms Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 1 Unknown, 0 Unchecked, 2172.66ms Time] [2021-11-07 17:32:57,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4682 states. [2021-11-07 17:32:57,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4682 to 4682. [2021-11-07 17:32:57,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4682 states, 4611 states have (on average 1.2669702884406853) internal successors, (5842), 4673 states have internal predecessors, (5842), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-07 17:32:57,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4682 states to 4682 states and 5854 transitions. [2021-11-07 17:32:57,752 INFO L78 Accepts]: Start accepts. Automaton has 4682 states and 5854 transitions. Word has length 59 [2021-11-07 17:32:57,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:32:57,756 INFO L470 AbstractCegarLoop]: Abstraction has 4682 states and 5854 transitions. [2021-11-07 17:32:57,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2021-11-07 17:32:57,757 INFO L276 IsEmpty]: Start isEmpty. Operand 4682 states and 5854 transitions. [2021-11-07 17:32:57,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 17:32:57,759 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:32:57,759 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] [2021-11-07 17:32:57,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 17:32:57,759 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-07 17:32:57,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:32:57,759 INFO L85 PathProgramCache]: Analyzing trace with hash -148878727, now seen corresponding path program 1 times [2021-11-07 17:32:57,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:32:57,760 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379578509] [2021-11-07 17:32:57,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:32:57,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:32:57,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:32:58,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 17:32:58,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:32:58,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379578509] [2021-11-07 17:32:58,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379578509] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:32:58,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:32:58,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:32:58,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762767917] [2021-11-07 17:32:58,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:32:58,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:32:58,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:32:58,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:32:58,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:32:58,111 INFO L87 Difference]: Start difference. First operand 4682 states and 5854 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2021-11-07 17:33:00,173 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 [] [2021-11-07 17:33:00,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:33:00,738 INFO L93 Difference]: Finished difference Result 12434 states and 15571 transitions. [2021-11-07 17:33:00,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:33:00,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 59 [2021-11-07 17:33:00,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:33:00,762 INFO L225 Difference]: With dead ends: 12434 [2021-11-07 17:33:00,762 INFO L226 Difference]: Without dead ends: 7852 [2021-11-07 17:33:00,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.64ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:33:00,776 INFO L933 BasicCegarLoop]: 3090 mSDtfsCounter, 2089 mSDsluCounter, 3020 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2274.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2089 SdHoareTripleChecker+Valid, 6110 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.31ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2441.65ms IncrementalHoareTripleChecker+Time [2021-11-07 17:33:00,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2089 Valid, 6110 Invalid, 77 Unknown, 0 Unchecked, 10.31ms Time], IncrementalHoareTripleChecker [9 Valid, 67 Invalid, 1 Unknown, 0 Unchecked, 2441.65ms Time] [2021-11-07 17:33:00,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7852 states. [2021-11-07 17:33:00,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7852 to 7516. [2021-11-07 17:33:01,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7516 states, 7437 states have (on average 1.2717493613016002) internal successors, (9458), 7499 states have internal predecessors, (9458), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-07 17:33:01,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7516 states to 7516 states and 9482 transitions. [2021-11-07 17:33:01,021 INFO L78 Accepts]: Start accepts. Automaton has 7516 states and 9482 transitions. Word has length 59 [2021-11-07 17:33:01,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:33:01,021 INFO L470 AbstractCegarLoop]: Abstraction has 7516 states and 9482 transitions. [2021-11-07 17:33:01,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2021-11-07 17:33:01,022 INFO L276 IsEmpty]: Start isEmpty. Operand 7516 states and 9482 transitions. [2021-11-07 17:33:01,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-07 17:33:01,022 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:33:01,023 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] [2021-11-07 17:33:01,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 17:33:01,023 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-07 17:33:01,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:33:01,024 INFO L85 PathProgramCache]: Analyzing trace with hash 589305686, now seen corresponding path program 1 times [2021-11-07 17:33:01,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:33:01,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992230817] [2021-11-07 17:33:01,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:33:01,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:33:01,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:33:01,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 17:33:01,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:33:01,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992230817] [2021-11-07 17:33:01,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992230817] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:33:01,269 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:33:01,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:33:01,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359398296] [2021-11-07 17:33:01,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:33:01,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:33:01,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:33:01,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:33:01,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:33:01,270 INFO L87 Difference]: Start difference. First operand 7516 states and 9482 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2021-11-07 17:33:03,325 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 [] [2021-11-07 17:33:03,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:33:03,654 INFO L93 Difference]: Finished difference Result 13404 states and 16932 transitions. [2021-11-07 17:33:03,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:33:03,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 60 [2021-11-07 17:33:03,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:33:03,672 INFO L225 Difference]: With dead ends: 13404 [2021-11-07 17:33:03,672 INFO L226 Difference]: Without dead ends: 5988 [2021-11-07 17:33:03,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.83ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:33:03,688 INFO L933 BasicCegarLoop]: 2606 mSDtfsCounter, 2490 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2069.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2490 SdHoareTripleChecker+Valid, 2716 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.27ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2257.25ms IncrementalHoareTripleChecker+Time [2021-11-07 17:33:03,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2490 Valid, 2716 Invalid, 8 Unknown, 0 Unchecked, 3.27ms Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 1 Unknown, 0 Unchecked, 2257.25ms Time] [2021-11-07 17:33:03,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5988 states. [2021-11-07 17:33:03,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5988 to 5988. [2021-11-07 17:33:03,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5988 states, 5913 states have (on average 1.2721122949433452) internal successors, (7522), 5971 states have internal predecessors, (7522), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-07 17:33:03,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5988 states to 5988 states and 7546 transitions. [2021-11-07 17:33:03,833 INFO L78 Accepts]: Start accepts. Automaton has 5988 states and 7546 transitions. Word has length 60 [2021-11-07 17:33:03,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:33:03,834 INFO L470 AbstractCegarLoop]: Abstraction has 5988 states and 7546 transitions. [2021-11-07 17:33:03,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2021-11-07 17:33:03,835 INFO L276 IsEmpty]: Start isEmpty. Operand 5988 states and 7546 transitions. [2021-11-07 17:33:03,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-07 17:33:03,837 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:33:03,837 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-07 17:33:03,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 17:33:03,838 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-07 17:33:03,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:33:03,839 INFO L85 PathProgramCache]: Analyzing trace with hash -621039907, now seen corresponding path program 1 times [2021-11-07 17:33:03,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:33:03,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729754556] [2021-11-07 17:33:03,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:33:03,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:33:03,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:33:04,193 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 17:33:04,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:33:04,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729754556] [2021-11-07 17:33:04,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729754556] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:33:04,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:33:04,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:33:04,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546208328] [2021-11-07 17:33:04,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:33:04,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:33:04,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:33:04,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:33:04,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:33:04,195 INFO L87 Difference]: Start difference. First operand 5988 states and 7546 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) [2021-11-07 17:33:06,254 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 [] [2021-11-07 17:33:06,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:33:06,746 INFO L93 Difference]: Finished difference Result 11918 states and 15009 transitions. [2021-11-07 17:33:06,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:33:06,747 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 [2021-11-07 17:33:06,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:33:06,787 INFO L225 Difference]: With dead ends: 11918 [2021-11-07 17:33:06,788 INFO L226 Difference]: Without dead ends: 8836 [2021-11-07 17:33:06,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.53ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:33:06,799 INFO L933 BasicCegarLoop]: 4899 mSDtfsCounter, 2295 mSDsluCounter, 2584 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2180.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2295 SdHoareTripleChecker+Valid, 7483 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.18ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2379.84ms IncrementalHoareTripleChecker+Time [2021-11-07 17:33:06,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2295 Valid, 7483 Invalid, 30 Unknown, 0 Unchecked, 6.18ms Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 1 Unknown, 0 Unchecked, 2379.84ms Time] [2021-11-07 17:33:06,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8836 states. [2021-11-07 17:33:06,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8836 to 8790. [2021-11-07 17:33:06,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8790 states, 8707 states have (on average 1.273458137131044) internal successors, (11088), 8765 states have internal predecessors, (11088), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-07 17:33:07,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8790 states to 8790 states and 11124 transitions. [2021-11-07 17:33:07,005 INFO L78 Accepts]: Start accepts. Automaton has 8790 states and 11124 transitions. Word has length 83 [2021-11-07 17:33:07,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:33:07,006 INFO L470 AbstractCegarLoop]: Abstraction has 8790 states and 11124 transitions. [2021-11-07 17:33:07,006 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) [2021-11-07 17:33:07,007 INFO L276 IsEmpty]: Start isEmpty. Operand 8790 states and 11124 transitions. [2021-11-07 17:33:07,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-07 17:33:07,008 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:33:07,008 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-07 17:33:07,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 17:33:07,009 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-07 17:33:07,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:33:07,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1900903585, now seen corresponding path program 1 times [2021-11-07 17:33:07,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:33:07,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489449846] [2021-11-07 17:33:07,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:33:07,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:33:07,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:33:07,217 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 17:33:07,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:33:07,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489449846] [2021-11-07 17:33:07,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489449846] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:33:07,217 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:33:07,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:33:07,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109212850] [2021-11-07 17:33:07,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:33:07,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:33:07,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:33:07,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:33:07,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:33:07,218 INFO L87 Difference]: Start difference. First operand 8790 states and 11124 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) [2021-11-07 17:33:09,273 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 [] [2021-11-07 17:33:09,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:33:09,666 INFO L93 Difference]: Finished difference Result 17524 states and 22169 transitions. [2021-11-07 17:33:09,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:33:09,667 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 [2021-11-07 17:33:09,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:33:09,688 INFO L225 Difference]: With dead ends: 17524 [2021-11-07 17:33:09,689 INFO L226 Difference]: Without dead ends: 11640 [2021-11-07 17:33:09,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.39ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:33:09,702 INFO L933 BasicCegarLoop]: 4899 mSDtfsCounter, 2341 mSDsluCounter, 2539 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2126.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2341 SdHoareTripleChecker+Valid, 7438 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.47ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2293.02ms IncrementalHoareTripleChecker+Time [2021-11-07 17:33:09,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2341 Valid, 7438 Invalid, 32 Unknown, 0 Unchecked, 6.47ms Time], IncrementalHoareTripleChecker [6 Valid, 25 Invalid, 1 Unknown, 0 Unchecked, 2293.02ms Time] [2021-11-07 17:33:09,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11640 states. [2021-11-07 17:33:10,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11640 to 11587. [2021-11-07 17:33:10,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11587 states, 11496 states have (on average 1.274269311064718) internal successors, (14649), 11554 states have internal predecessors, (14649), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-07 17:33:10,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11587 states to 11587 states and 14697 transitions. [2021-11-07 17:33:10,089 INFO L78 Accepts]: Start accepts. Automaton has 11587 states and 14697 transitions. Word has length 83 [2021-11-07 17:33:10,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:33:10,089 INFO L470 AbstractCegarLoop]: Abstraction has 11587 states and 14697 transitions. [2021-11-07 17:33:10,089 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) [2021-11-07 17:33:10,089 INFO L276 IsEmpty]: Start isEmpty. Operand 11587 states and 14697 transitions. [2021-11-07 17:33:10,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-07 17:33:10,092 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:33:10,093 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:33:10,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 17:33:10,093 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-07 17:33:10,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:33:10,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1391660714, now seen corresponding path program 1 times [2021-11-07 17:33:10,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:33:10,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382759237] [2021-11-07 17:33:10,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:33:10,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:33:10,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:33:10,355 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 17:33:10,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:33:10,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382759237] [2021-11-07 17:33:10,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382759237] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:33:10,356 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:33:10,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:33:10,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688817320] [2021-11-07 17:33:10,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:33:10,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 17:33:10,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:33:10,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 17:33:10,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 17:33:10,357 INFO L87 Difference]: Start difference. First operand 11587 states and 14697 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 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) [2021-11-07 17:33:10,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:33:10,800 INFO L93 Difference]: Finished difference Result 11587 states and 14697 transitions. [2021-11-07 17:33:10,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 17:33:10,800 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 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 [2021-11-07 17:33:10,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:33:10,819 INFO L225 Difference]: With dead ends: 11587 [2021-11-07 17:33:10,819 INFO L226 Difference]: Without dead ends: 11581 [2021-11-07 17:33:10,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 64.34ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 17:33:10,824 INFO L933 BasicCegarLoop]: 2598 mSDtfsCounter, 2535 mSDsluCounter, 2502 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 225.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2535 SdHoareTripleChecker+Valid, 5100 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.26ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 250.52ms IncrementalHoareTripleChecker+Time [2021-11-07 17:33:10,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2535 Valid, 5100 Invalid, 106 Unknown, 0 Unchecked, 7.26ms Time], IncrementalHoareTripleChecker [34 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 250.52ms Time] [2021-11-07 17:33:10,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11581 states. [2021-11-07 17:33:11,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11581 to 11581. [2021-11-07 17:33:11,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11581 states, 11493 states have (on average 1.274079874706343) internal successors, (14643), 11548 states have internal predecessors, (14643), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-07 17:33:11,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11581 states to 11581 states and 14691 transitions. [2021-11-07 17:33:11,139 INFO L78 Accepts]: Start accepts. Automaton has 11581 states and 14691 transitions. Word has length 84 [2021-11-07 17:33:11,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:33:11,139 INFO L470 AbstractCegarLoop]: Abstraction has 11581 states and 14691 transitions. [2021-11-07 17:33:11,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 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) [2021-11-07 17:33:11,140 INFO L276 IsEmpty]: Start isEmpty. Operand 11581 states and 14691 transitions. [2021-11-07 17:33:11,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-07 17:33:11,143 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:33:11,143 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:33:11,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 17:33:11,143 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-07 17:33:11,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:33:11,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1650967527, now seen corresponding path program 1 times [2021-11-07 17:33:11,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:33:11,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812948268] [2021-11-07 17:33:11,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:33:11,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:33:11,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:33:11,382 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 17:33:11,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:33:11,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812948268] [2021-11-07 17:33:11,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812948268] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:33:11,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:33:11,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:33:11,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061977600] [2021-11-07 17:33:11,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:33:11,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 17:33:11,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:33:11,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 17:33:11,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 17:33:11,383 INFO L87 Difference]: Start difference. First operand 11581 states and 14691 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 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) [2021-11-07 17:33:11,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:33:11,893 INFO L93 Difference]: Finished difference Result 11581 states and 14691 transitions. [2021-11-07 17:33:11,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 17:33:11,894 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 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 86 [2021-11-07 17:33:11,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:33:11,917 INFO L225 Difference]: With dead ends: 11581 [2021-11-07 17:33:11,918 INFO L226 Difference]: Without dead ends: 11575 [2021-11-07 17:33:11,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.11ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 17:33:11,923 INFO L933 BasicCegarLoop]: 2592 mSDtfsCounter, 2524 mSDsluCounter, 2499 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 283.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2524 SdHoareTripleChecker+Valid, 5091 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.50ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 303.63ms IncrementalHoareTripleChecker+Time [2021-11-07 17:33:11,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2524 Valid, 5091 Invalid, 106 Unknown, 0 Unchecked, 6.50ms Time], IncrementalHoareTripleChecker [37 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 303.63ms Time] [2021-11-07 17:33:11,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11575 states. [2021-11-07 17:33:12,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11575 to 11575. [2021-11-07 17:33:12,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11575 states, 11490 states have (on average 1.2738903394255874) internal successors, (14637), 11542 states have internal predecessors, (14637), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-07 17:33:12,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11575 states to 11575 states and 14685 transitions. [2021-11-07 17:33:12,217 INFO L78 Accepts]: Start accepts. Automaton has 11575 states and 14685 transitions. Word has length 86 [2021-11-07 17:33:12,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:33:12,217 INFO L470 AbstractCegarLoop]: Abstraction has 11575 states and 14685 transitions. [2021-11-07 17:33:12,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 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) [2021-11-07 17:33:12,218 INFO L276 IsEmpty]: Start isEmpty. Operand 11575 states and 14685 transitions. [2021-11-07 17:33:12,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-07 17:33:12,219 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:33:12,220 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:33:12,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 17:33:12,220 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-07 17:33:12,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:33:12,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1736711332, now seen corresponding path program 1 times [2021-11-07 17:33:12,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:33:12,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031819074] [2021-11-07 17:33:12,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:33:12,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:33:12,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:33:12,591 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 17:33:12,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:33:12,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031819074] [2021-11-07 17:33:12,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031819074] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:33:12,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:33:12,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:33:12,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941504961] [2021-11-07 17:33:12,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:33:12,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 17:33:12,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:33:12,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 17:33:12,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 17:33:12,593 INFO L87 Difference]: Start difference. First operand 11575 states and 14685 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 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) [2021-11-07 17:33:13,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:33:13,089 INFO L93 Difference]: Finished difference Result 11575 states and 14685 transitions. [2021-11-07 17:33:13,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 17:33:13,089 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 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 88 [2021-11-07 17:33:13,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:33:13,110 INFO L225 Difference]: With dead ends: 11575 [2021-11-07 17:33:13,110 INFO L226 Difference]: Without dead ends: 11569 [2021-11-07 17:33:13,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.33ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 17:33:13,116 INFO L933 BasicCegarLoop]: 2586 mSDtfsCounter, 2516 mSDsluCounter, 2496 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 206.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2516 SdHoareTripleChecker+Valid, 5082 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.04ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 225.45ms IncrementalHoareTripleChecker+Time [2021-11-07 17:33:13,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2516 Valid, 5082 Invalid, 103 Unknown, 0 Unchecked, 7.04ms Time], IncrementalHoareTripleChecker [37 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 225.45ms Time] [2021-11-07 17:33:13,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11569 states. [2021-11-07 17:33:13,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11569 to 11569. [2021-11-07 17:33:13,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11569 states, 11487 states have (on average 1.2737007051449465) internal successors, (14631), 11536 states have internal predecessors, (14631), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-07 17:33:13,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11569 states to 11569 states and 14679 transitions. [2021-11-07 17:33:13,389 INFO L78 Accepts]: Start accepts. Automaton has 11569 states and 14679 transitions. Word has length 88 [2021-11-07 17:33:13,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:33:13,390 INFO L470 AbstractCegarLoop]: Abstraction has 11569 states and 14679 transitions. [2021-11-07 17:33:13,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 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) [2021-11-07 17:33:13,390 INFO L276 IsEmpty]: Start isEmpty. Operand 11569 states and 14679 transitions. [2021-11-07 17:33:13,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-07 17:33:13,391 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:33:13,392 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:33:13,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 17:33:13,392 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-07 17:33:13,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:33:13,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1762838303, now seen corresponding path program 1 times [2021-11-07 17:33:13,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:33:13,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104786859] [2021-11-07 17:33:13,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:33:13,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:33:13,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:33:13,617 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 17:33:13,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:33:13,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104786859] [2021-11-07 17:33:13,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104786859] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:33:13,618 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:33:13,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:33:13,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627016934] [2021-11-07 17:33:13,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:33:13,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 17:33:13,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:33:13,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 17:33:13,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 17:33:13,619 INFO L87 Difference]: Start difference. First operand 11569 states and 14679 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 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) [2021-11-07 17:33:14,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:33:14,124 INFO L93 Difference]: Finished difference Result 11569 states and 14679 transitions. [2021-11-07 17:33:14,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 17:33:14,124 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 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 [2021-11-07 17:33:14,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:33:14,141 INFO L225 Difference]: With dead ends: 11569 [2021-11-07 17:33:14,141 INFO L226 Difference]: Without dead ends: 11563 [2021-11-07 17:33:14,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.12ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 17:33:14,145 INFO L933 BasicCegarLoop]: 2580 mSDtfsCounter, 2508 mSDsluCounter, 2493 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 195.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2508 SdHoareTripleChecker+Valid, 5073 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.17ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 213.55ms IncrementalHoareTripleChecker+Time [2021-11-07 17:33:14,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2508 Valid, 5073 Invalid, 100 Unknown, 0 Unchecked, 6.17ms Time], IncrementalHoareTripleChecker [37 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 213.55ms Time] [2021-11-07 17:33:14,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11563 states. [2021-11-07 17:33:14,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11563 to 11563. [2021-11-07 17:33:14,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11563 states, 11484 states have (on average 1.2735109717868338) internal successors, (14625), 11530 states have internal predecessors, (14625), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-07 17:33:14,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11563 states to 11563 states and 14673 transitions. [2021-11-07 17:33:14,494 INFO L78 Accepts]: Start accepts. Automaton has 11563 states and 14673 transitions. Word has length 90 [2021-11-07 17:33:14,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:33:14,495 INFO L470 AbstractCegarLoop]: Abstraction has 11563 states and 14673 transitions. [2021-11-07 17:33:14,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 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) [2021-11-07 17:33:14,495 INFO L276 IsEmpty]: Start isEmpty. Operand 11563 states and 14673 transitions. [2021-11-07 17:33:14,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-07 17:33:14,497 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:33:14,497 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:33:14,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 17:33:14,498 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-07 17:33:14,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:33:14,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1870645090, now seen corresponding path program 1 times [2021-11-07 17:33:14,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:33:14,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852549677] [2021-11-07 17:33:14,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:33:14,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:33:14,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:33:14,785 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 17:33:14,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:33:14,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852549677] [2021-11-07 17:33:14,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852549677] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:33:14,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:33:14,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:33:14,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220290838] [2021-11-07 17:33:14,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:33:14,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 17:33:14,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:33:14,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 17:33:14,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 17:33:14,787 INFO L87 Difference]: Start difference. First operand 11563 states and 14673 transitions. Second operand has 4 states, 4 states have (on average 20.75) 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) [2021-11-07 17:33:15,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:33:15,409 INFO L93 Difference]: Finished difference Result 11563 states and 14673 transitions. [2021-11-07 17:33:15,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 17:33:15,410 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) 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 92 [2021-11-07 17:33:15,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:33:15,425 INFO L225 Difference]: With dead ends: 11563 [2021-11-07 17:33:15,425 INFO L226 Difference]: Without dead ends: 11557 [2021-11-07 17:33:15,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.20ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 17:33:15,428 INFO L933 BasicCegarLoop]: 2574 mSDtfsCounter, 2500 mSDsluCounter, 2490 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 211.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2500 SdHoareTripleChecker+Valid, 5064 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.86ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 229.27ms IncrementalHoareTripleChecker+Time [2021-11-07 17:33:15,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2500 Valid, 5064 Invalid, 97 Unknown, 0 Unchecked, 6.86ms Time], IncrementalHoareTripleChecker [37 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 229.27ms Time] [2021-11-07 17:33:15,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11557 states. [2021-11-07 17:33:15,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11557 to 11557. [2021-11-07 17:33:15,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11557 states, 11481 states have (on average 1.2733211392735824) internal successors, (14619), 11524 states have internal predecessors, (14619), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-07 17:33:15,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11557 states to 11557 states and 14667 transitions. [2021-11-07 17:33:15,707 INFO L78 Accepts]: Start accepts. Automaton has 11557 states and 14667 transitions. Word has length 92 [2021-11-07 17:33:15,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:33:15,707 INFO L470 AbstractCegarLoop]: Abstraction has 11557 states and 14667 transitions. [2021-11-07 17:33:15,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) 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) [2021-11-07 17:33:15,707 INFO L276 IsEmpty]: Start isEmpty. Operand 11557 states and 14667 transitions. [2021-11-07 17:33:15,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-07 17:33:15,709 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:33:15,709 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:33:15,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-07 17:33:15,710 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-07 17:33:15,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:33:15,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1901214683, now seen corresponding path program 1 times [2021-11-07 17:33:15,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:33:15,711 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338590170] [2021-11-07 17:33:15,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:33:15,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:33:15,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:33:15,984 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 17:33:15,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:33:15,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338590170] [2021-11-07 17:33:15,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338590170] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:33:15,984 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:33:15,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:33:15,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773474119] [2021-11-07 17:33:15,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:33:15,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 17:33:15,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:33:15,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 17:33:15,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 17:33:15,986 INFO L87 Difference]: Start difference. First operand 11557 states and 14667 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 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) [2021-11-07 17:33:16,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:33:16,506 INFO L93 Difference]: Finished difference Result 11557 states and 14667 transitions. [2021-11-07 17:33:16,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 17:33:16,507 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 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 94 [2021-11-07 17:33:16,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:33:16,520 INFO L225 Difference]: With dead ends: 11557 [2021-11-07 17:33:16,521 INFO L226 Difference]: Without dead ends: 11551 [2021-11-07 17:33:16,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 61.36ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 17:33:16,524 INFO L933 BasicCegarLoop]: 2568 mSDtfsCounter, 2492 mSDsluCounter, 2487 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 207.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2492 SdHoareTripleChecker+Valid, 5055 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.81ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 228.41ms IncrementalHoareTripleChecker+Time [2021-11-07 17:33:16,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2492 Valid, 5055 Invalid, 94 Unknown, 0 Unchecked, 6.81ms Time], IncrementalHoareTripleChecker [37 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 228.41ms Time] [2021-11-07 17:33:16,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11551 states. [2021-11-07 17:33:16,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11551 to 11551. [2021-11-07 17:33:16,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11551 states, 11478 states have (on average 1.273131207527444) internal successors, (14613), 11518 states have internal predecessors, (14613), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-07 17:33:16,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11551 states to 11551 states and 14661 transitions. [2021-11-07 17:33:16,860 INFO L78 Accepts]: Start accepts. Automaton has 11551 states and 14661 transitions. Word has length 94 [2021-11-07 17:33:16,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:33:16,861 INFO L470 AbstractCegarLoop]: Abstraction has 11551 states and 14661 transitions. [2021-11-07 17:33:16,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 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) [2021-11-07 17:33:16,861 INFO L276 IsEmpty]: Start isEmpty. Operand 11551 states and 14661 transitions. [2021-11-07 17:33:16,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 17:33:16,863 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:33:16,863 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:33:16,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-07 17:33:16,863 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-07 17:33:16,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:33:16,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1706058392, now seen corresponding path program 1 times [2021-11-07 17:33:16,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:33:16,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111393154] [2021-11-07 17:33:16,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:33:16,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:33:16,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:33:17,060 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 17:33:17,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:33:17,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111393154] [2021-11-07 17:33:17,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111393154] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:33:17,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:33:17,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:33:17,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91167174] [2021-11-07 17:33:17,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:33:17,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 17:33:17,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:33:17,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 17:33:17,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 17:33:17,061 INFO L87 Difference]: Start difference. First operand 11551 states and 14661 transitions. Second operand has 4 states, 4 states have (on average 21.75) 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) [2021-11-07 17:33:17,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:33:17,747 INFO L93 Difference]: Finished difference Result 11551 states and 14661 transitions. [2021-11-07 17:33:17,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 17:33:17,747 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) 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 96 [2021-11-07 17:33:17,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:33:17,761 INFO L225 Difference]: With dead ends: 11551 [2021-11-07 17:33:17,761 INFO L226 Difference]: Without dead ends: 11545 [2021-11-07 17:33:17,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.46ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 17:33:17,765 INFO L933 BasicCegarLoop]: 2540 mSDtfsCounter, 2185 mSDsluCounter, 2714 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 381.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2185 SdHoareTripleChecker+Valid, 5254 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.58ms SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 412.95ms IncrementalHoareTripleChecker+Time [2021-11-07 17:33:17,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2185 Valid, 5254 Invalid, 182 Unknown, 0 Unchecked, 5.58ms Time], IncrementalHoareTripleChecker [49 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 412.95ms Time] [2021-11-07 17:33:17,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11545 states. [2021-11-07 17:33:18,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11545 to 11545. [2021-11-07 17:33:18,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11545 states, 11475 states have (on average 1.2729411764705882) internal successors, (14607), 11512 states have internal predecessors, (14607), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-07 17:33:18,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11545 states to 11545 states and 14655 transitions. [2021-11-07 17:33:18,106 INFO L78 Accepts]: Start accepts. Automaton has 11545 states and 14655 transitions. Word has length 96 [2021-11-07 17:33:18,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:33:18,106 INFO L470 AbstractCegarLoop]: Abstraction has 11545 states and 14655 transitions. [2021-11-07 17:33:18,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) 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) [2021-11-07 17:33:18,106 INFO L276 IsEmpty]: Start isEmpty. Operand 11545 states and 14655 transitions. [2021-11-07 17:33:18,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-07 17:33:18,108 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:33:18,109 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:33:18,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-07 17:33:18,109 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-07 17:33:18,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:33:18,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1155543851, now seen corresponding path program 1 times [2021-11-07 17:33:18,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:33:18,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849070370] [2021-11-07 17:33:18,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:33:18,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:33:18,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:33:18,318 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 17:33:18,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:33:18,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849070370] [2021-11-07 17:33:18,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849070370] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:33:18,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:33:18,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:33:18,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482601448] [2021-11-07 17:33:18,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:33:18,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 17:33:18,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:33:18,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 17:33:18,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 17:33:18,319 INFO L87 Difference]: Start difference. First operand 11545 states and 14655 transitions. Second operand has 4 states, 4 states have (on average 22.25) 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) [2021-11-07 17:33:18,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:33:18,754 INFO L93 Difference]: Finished difference Result 11545 states and 14655 transitions. [2021-11-07 17:33:18,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 17:33:18,755 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) 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 98 [2021-11-07 17:33:18,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:33:18,769 INFO L225 Difference]: With dead ends: 11545 [2021-11-07 17:33:18,769 INFO L226 Difference]: Without dead ends: 11539 [2021-11-07 17:33:18,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.24ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 17:33:18,773 INFO L933 BasicCegarLoop]: 2556 mSDtfsCounter, 2476 mSDsluCounter, 2481 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 152.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2476 SdHoareTripleChecker+Valid, 5037 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.55ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 166.85ms IncrementalHoareTripleChecker+Time [2021-11-07 17:33:18,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2476 Valid, 5037 Invalid, 88 Unknown, 0 Unchecked, 4.55ms Time], IncrementalHoareTripleChecker [37 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 166.85ms Time] [2021-11-07 17:33:18,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11539 states. [2021-11-07 17:33:19,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11539 to 11539. [2021-11-07 17:33:19,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11539 states, 11472 states have (on average 1.2727510460251046) internal successors, (14601), 11506 states have internal predecessors, (14601), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-07 17:33:19,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11539 states to 11539 states and 14649 transitions. [2021-11-07 17:33:19,137 INFO L78 Accepts]: Start accepts. Automaton has 11539 states and 14649 transitions. Word has length 98 [2021-11-07 17:33:19,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:33:19,137 INFO L470 AbstractCegarLoop]: Abstraction has 11539 states and 14649 transitions. [2021-11-07 17:33:19,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) 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) [2021-11-07 17:33:19,138 INFO L276 IsEmpty]: Start isEmpty. Operand 11539 states and 14649 transitions. [2021-11-07 17:33:19,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-07 17:33:19,140 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:33:19,140 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:33:19,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-07 17:33:19,140 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-07 17:33:19,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:33:19,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1918737042, now seen corresponding path program 1 times [2021-11-07 17:33:19,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:33:19,141 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655533316] [2021-11-07 17:33:19,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:33:19,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:33:19,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:33:19,370 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 17:33:19,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:33:19,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655533316] [2021-11-07 17:33:19,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655533316] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:33:19,370 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:33:19,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:33:19,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804581940] [2021-11-07 17:33:19,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:33:19,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 17:33:19,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:33:19,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 17:33:19,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 17:33:19,371 INFO L87 Difference]: Start difference. First operand 11539 states and 14649 transitions. Second operand has 4 states, 4 states have (on average 22.75) 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) [2021-11-07 17:33:19,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:33:19,883 INFO L93 Difference]: Finished difference Result 11539 states and 14649 transitions. [2021-11-07 17:33:19,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 17:33:19,884 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) 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 100 [2021-11-07 17:33:19,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:33:19,895 INFO L225 Difference]: With dead ends: 11539 [2021-11-07 17:33:19,895 INFO L226 Difference]: Without dead ends: 11533 [2021-11-07 17:33:19,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.85ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 17:33:19,897 INFO L933 BasicCegarLoop]: 2550 mSDtfsCounter, 2468 mSDsluCounter, 2478 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 152.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2468 SdHoareTripleChecker+Valid, 5028 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.90ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 166.47ms IncrementalHoareTripleChecker+Time [2021-11-07 17:33:19,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2468 Valid, 5028 Invalid, 85 Unknown, 0 Unchecked, 4.90ms Time], IncrementalHoareTripleChecker [37 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 166.47ms Time] [2021-11-07 17:33:19,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11533 states. [2021-11-07 17:33:20,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11533 to 11533. [2021-11-07 17:33:20,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11533 states, 11469 states have (on average 1.2725608161130002) internal successors, (14595), 11500 states have internal predecessors, (14595), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-07 17:33:20,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11533 states to 11533 states and 14643 transitions. [2021-11-07 17:33:20,299 INFO L78 Accepts]: Start accepts. Automaton has 11533 states and 14643 transitions. Word has length 100 [2021-11-07 17:33:20,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:33:20,300 INFO L470 AbstractCegarLoop]: Abstraction has 11533 states and 14643 transitions. [2021-11-07 17:33:20,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) 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) [2021-11-07 17:33:20,300 INFO L276 IsEmpty]: Start isEmpty. Operand 11533 states and 14643 transitions. [2021-11-07 17:33:20,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-07 17:33:20,302 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:33:20,303 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:33:20,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-07 17:33:20,303 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-07 17:33:20,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:33:20,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1365175247, now seen corresponding path program 1 times [2021-11-07 17:33:20,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:33:20,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269920746] [2021-11-07 17:33:20,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:33:20,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:33:20,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:33:20,510 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 17:33:20,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:33:20,510 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269920746] [2021-11-07 17:33:20,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269920746] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:33:20,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:33:20,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:33:20,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935961963] [2021-11-07 17:33:20,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:33:20,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 17:33:20,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:33:20,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 17:33:20,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 17:33:20,511 INFO L87 Difference]: Start difference. First operand 11533 states and 14643 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 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) [2021-11-07 17:33:21,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:33:21,026 INFO L93 Difference]: Finished difference Result 11533 states and 14643 transitions. [2021-11-07 17:33:21,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 17:33:21,026 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 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 102 [2021-11-07 17:33:21,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:33:21,038 INFO L225 Difference]: With dead ends: 11533 [2021-11-07 17:33:21,038 INFO L226 Difference]: Without dead ends: 11527 [2021-11-07 17:33:21,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.35ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 17:33:21,040 INFO L933 BasicCegarLoop]: 2544 mSDtfsCounter, 2460 mSDsluCounter, 2475 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 136.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2460 SdHoareTripleChecker+Valid, 5019 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.60ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 149.89ms IncrementalHoareTripleChecker+Time [2021-11-07 17:33:21,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2460 Valid, 5019 Invalid, 82 Unknown, 0 Unchecked, 4.60ms Time], IncrementalHoareTripleChecker [37 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 149.89ms Time] [2021-11-07 17:33:21,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11527 states. [2021-11-07 17:33:21,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11527 to 11527. [2021-11-07 17:33:21,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11527 states, 11466 states have (on average 1.272370486656201) internal successors, (14589), 11494 states have internal predecessors, (14589), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-07 17:33:21,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11527 states to 11527 states and 14637 transitions. [2021-11-07 17:33:21,374 INFO L78 Accepts]: Start accepts. Automaton has 11527 states and 14637 transitions. Word has length 102 [2021-11-07 17:33:21,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:33:21,374 INFO L470 AbstractCegarLoop]: Abstraction has 11527 states and 14637 transitions. [2021-11-07 17:33:21,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 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) [2021-11-07 17:33:21,375 INFO L276 IsEmpty]: Start isEmpty. Operand 11527 states and 14637 transitions. [2021-11-07 17:33:21,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-07 17:33:21,377 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:33:21,377 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:33:21,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-07 17:33:21,377 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-07 17:33:21,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:33:21,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1968234636, now seen corresponding path program 1 times [2021-11-07 17:33:21,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:33:21,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020961436] [2021-11-07 17:33:21,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:33:21,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:33:21,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:33:21,597 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 17:33:21,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:33:21,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020961436] [2021-11-07 17:33:21,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020961436] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:33:21,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:33:21,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:33:21,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841262234] [2021-11-07 17:33:21,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:33:21,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 17:33:21,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:33:21,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 17:33:21,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 17:33:21,601 INFO L87 Difference]: Start difference. First operand 11527 states and 14637 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 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) [2021-11-07 17:33:22,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:33:22,114 INFO L93 Difference]: Finished difference Result 11527 states and 14637 transitions. [2021-11-07 17:33:22,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 17:33:22,115 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 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 104 [2021-11-07 17:33:22,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:33:22,126 INFO L225 Difference]: With dead ends: 11527 [2021-11-07 17:33:22,126 INFO L226 Difference]: Without dead ends: 11521 [2021-11-07 17:33:22,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 63.45ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 17:33:22,128 INFO L933 BasicCegarLoop]: 2538 mSDtfsCounter, 2452 mSDsluCounter, 2472 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 132.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2452 SdHoareTripleChecker+Valid, 5010 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.29ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 143.87ms IncrementalHoareTripleChecker+Time [2021-11-07 17:33:22,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2452 Valid, 5010 Invalid, 79 Unknown, 0 Unchecked, 4.29ms Time], IncrementalHoareTripleChecker [37 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 143.87ms Time] [2021-11-07 17:33:22,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11521 states. [2021-11-07 17:33:22,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11521 to 11521. [2021-11-07 17:33:22,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11521 states, 11463 states have (on average 1.2721800575765507) internal successors, (14583), 11488 states have internal predecessors, (14583), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-07 17:33:22,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11521 states to 11521 states and 14631 transitions. [2021-11-07 17:33:22,469 INFO L78 Accepts]: Start accepts. Automaton has 11521 states and 14631 transitions. Word has length 104 [2021-11-07 17:33:22,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:33:22,469 INFO L470 AbstractCegarLoop]: Abstraction has 11521 states and 14631 transitions. [2021-11-07 17:33:22,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 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) [2021-11-07 17:33:22,469 INFO L276 IsEmpty]: Start isEmpty. Operand 11521 states and 14631 transitions. [2021-11-07 17:33:22,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-07 17:33:22,471 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:33:22,472 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:33:22,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-07 17:33:22,472 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-07 17:33:22,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:33:22,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1687722185, now seen corresponding path program 1 times [2021-11-07 17:33:22,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:33:22,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057229325] [2021-11-07 17:33:22,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:33:22,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:33:22,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:33:22,708 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 17:33:22,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:33:22,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057229325] [2021-11-07 17:33:22,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057229325] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:33:22,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:33:22,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:33:22,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652695655] [2021-11-07 17:33:22,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:33:22,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 17:33:22,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:33:22,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 17:33:22,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 17:33:22,709 INFO L87 Difference]: Start difference. First operand 11521 states and 14631 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 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) [2021-11-07 17:33:23,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:33:23,219 INFO L93 Difference]: Finished difference Result 11521 states and 14631 transitions. [2021-11-07 17:33:23,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 17:33:23,220 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 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 106 [2021-11-07 17:33:23,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:33:23,231 INFO L225 Difference]: With dead ends: 11521 [2021-11-07 17:33:23,231 INFO L226 Difference]: Without dead ends: 11422 [2021-11-07 17:33:23,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.51ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 17:33:23,233 INFO L933 BasicCegarLoop]: 2535 mSDtfsCounter, 2441 mSDsluCounter, 2469 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 112.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2441 SdHoareTripleChecker+Valid, 5004 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.47ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 125.12ms IncrementalHoareTripleChecker+Time [2021-11-07 17:33:23,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2441 Valid, 5004 Invalid, 76 Unknown, 0 Unchecked, 4.47ms Time], IncrementalHoareTripleChecker [40 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 125.12ms Time] [2021-11-07 17:33:23,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11422 states. [2021-11-07 17:33:23,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11422 to 11422. [2021-11-07 17:33:23,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11422 states, 11367 states have (on average 1.273774962611067) internal successors, (14479), 11389 states have internal predecessors, (14479), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-07 17:33:23,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11422 states to 11422 states and 14527 transitions. [2021-11-07 17:33:23,583 INFO L78 Accepts]: Start accepts. Automaton has 11422 states and 14527 transitions. Word has length 106 [2021-11-07 17:33:23,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:33:23,583 INFO L470 AbstractCegarLoop]: Abstraction has 11422 states and 14527 transitions. [2021-11-07 17:33:23,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 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) [2021-11-07 17:33:23,583 INFO L276 IsEmpty]: Start isEmpty. Operand 11422 states and 14527 transitions. [2021-11-07 17:33:23,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-07 17:33:23,586 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:33:23,587 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:33:23,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-07 17:33:23,587 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr61ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-07 17:33:23,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:33:23,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1775453187, now seen corresponding path program 1 times [2021-11-07 17:33:23,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:33:23,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605470374] [2021-11-07 17:33:23,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:33:23,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:33:23,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:33:23,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 17:33:23,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:33:23,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605470374] [2021-11-07 17:33:23,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605470374] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:33:23,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:33:23,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:33:23,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658280086] [2021-11-07 17:33:23,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:33:23,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:33:23,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:33:23,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:33:23,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:33:23,773 INFO L87 Difference]: Start difference. First operand 11422 states and 14527 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2021-11-07 17:33:25,894 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 [] [2021-11-07 17:33:26,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:33:26,755 INFO L93 Difference]: Finished difference Result 22498 states and 28664 transitions. [2021-11-07 17:33:26,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:33:26,756 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 108 [2021-11-07 17:33:26,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:33:26,769 INFO L225 Difference]: With dead ends: 22498 [2021-11-07 17:33:26,770 INFO L226 Difference]: Without dead ends: 11118 [2021-11-07 17:33:26,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.70ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:33:26,790 INFO L933 BasicCegarLoop]: 3318 mSDtfsCounter, 987 mSDsluCounter, 2401 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2292.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 987 SdHoareTripleChecker+Valid, 5719 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.92ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2502.25ms IncrementalHoareTripleChecker+Time [2021-11-07 17:33:26,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [987 Valid, 5719 Invalid, 79 Unknown, 0 Unchecked, 3.92ms Time], IncrementalHoareTripleChecker [15 Valid, 63 Invalid, 1 Unknown, 0 Unchecked, 2502.25ms Time] [2021-11-07 17:33:26,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11118 states. [2021-11-07 17:33:27,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11118 to 11076. [2021-11-07 17:33:27,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11076 states, 11029 states have (on average 1.2709221144256053) internal successors, (14017), 11051 states have internal predecessors, (14017), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-07 17:33:27,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11076 states to 11076 states and 14053 transitions. [2021-11-07 17:33:27,157 INFO L78 Accepts]: Start accepts. Automaton has 11076 states and 14053 transitions. Word has length 108 [2021-11-07 17:33:27,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:33:27,157 INFO L470 AbstractCegarLoop]: Abstraction has 11076 states and 14053 transitions. [2021-11-07 17:33:27,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2021-11-07 17:33:27,158 INFO L276 IsEmpty]: Start isEmpty. Operand 11076 states and 14053 transitions. [2021-11-07 17:33:27,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-07 17:33:27,160 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:33:27,161 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] [2021-11-07 17:33:27,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-07 17:33:27,161 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr61ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-07 17:33:27,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:33:27,161 INFO L85 PathProgramCache]: Analyzing trace with hash -86695441, now seen corresponding path program 1 times [2021-11-07 17:33:27,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:33:27,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392252594] [2021-11-07 17:33:27,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:33:27,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:33:27,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:33:27,356 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 17:33:27,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:33:27,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392252594] [2021-11-07 17:33:27,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392252594] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:33:27,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:33:27,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:33:27,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015954619] [2021-11-07 17:33:27,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:33:27,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:33:27,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:33:27,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:33:27,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:33:27,358 INFO L87 Difference]: Start difference. First operand 11076 states and 14053 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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) [2021-11-07 17:33:29,413 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 [] [2021-11-07 17:33:30,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:33:30,230 INFO L93 Difference]: Finished difference Result 24478 states and 31119 transitions. [2021-11-07 17:33:30,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:33:30,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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 140 [2021-11-07 17:33:30,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:33:30,247 INFO L225 Difference]: With dead ends: 24478 [2021-11-07 17:33:30,248 INFO L226 Difference]: Without dead ends: 13566 [2021-11-07 17:33:30,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.85ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:33:30,263 INFO L933 BasicCegarLoop]: 3434 mSDtfsCounter, 984 mSDsluCounter, 2392 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2221.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 984 SdHoareTripleChecker+Valid, 5826 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.71ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2395.27ms IncrementalHoareTripleChecker+Time [2021-11-07 17:33:30,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [984 Valid, 5826 Invalid, 77 Unknown, 0 Unchecked, 3.71ms Time], IncrementalHoareTripleChecker [13 Valid, 63 Invalid, 1 Unknown, 0 Unchecked, 2395.27ms Time] [2021-11-07 17:33:30,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13566 states. [2021-11-07 17:33:30,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13566 to 13524. [2021-11-07 17:33:30,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13524 states, 13477 states have (on average 1.2700155821028418) internal successors, (17116), 13499 states have internal predecessors, (17116), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-07 17:33:30,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13524 states to 13524 states and 17152 transitions. [2021-11-07 17:33:30,691 INFO L78 Accepts]: Start accepts. Automaton has 13524 states and 17152 transitions. Word has length 140 [2021-11-07 17:33:30,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:33:30,691 INFO L470 AbstractCegarLoop]: Abstraction has 13524 states and 17152 transitions. [2021-11-07 17:33:30,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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) [2021-11-07 17:33:30,692 INFO L276 IsEmpty]: Start isEmpty. Operand 13524 states and 17152 transitions. [2021-11-07 17:33:30,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-11-07 17:33:30,695 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:33:30,695 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:33:30,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-07 17:33:30,695 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr61ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-07 17:33:30,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:33:30,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1125790003, now seen corresponding path program 1 times [2021-11-07 17:33:30,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:33:30,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268787972] [2021-11-07 17:33:30,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:33:30,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:33:30,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:33:30,986 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 17:33:30,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:33:30,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268787972] [2021-11-07 17:33:30,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268787972] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:33:30,987 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:33:30,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:33:30,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130191776] [2021-11-07 17:33:30,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:33:30,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:33:30,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:33:30,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:33:30,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:33:30,989 INFO L87 Difference]: Start difference. First operand 13524 states and 17152 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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) [2021-11-07 17:33:33,097 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 17:33:34,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:33:34,067 INFO L93 Difference]: Finished difference Result 29350 states and 37269 transitions. [2021-11-07 17:33:34,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:33:34,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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 170 [2021-11-07 17:33:34,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:33:34,090 INFO L225 Difference]: With dead ends: 29350 [2021-11-07 17:33:34,090 INFO L226 Difference]: Without dead ends: 15939 [2021-11-07 17:33:34,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.26ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:33:34,111 INFO L933 BasicCegarLoop]: 3435 mSDtfsCounter, 983 mSDsluCounter, 2400 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2294.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 983 SdHoareTripleChecker+Valid, 5835 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.59ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2504.67ms IncrementalHoareTripleChecker+Time [2021-11-07 17:33:34,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [983 Valid, 5835 Invalid, 70 Unknown, 0 Unchecked, 3.59ms Time], IncrementalHoareTripleChecker [11 Valid, 58 Invalid, 1 Unknown, 0 Unchecked, 2504.67ms Time] [2021-11-07 17:33:34,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15939 states. [2021-11-07 17:33:34,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15939 to 15897. [2021-11-07 17:33:34,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15897 states, 15850 states have (on average 1.2696529968454258) internal successors, (20124), 15872 states have internal predecessors, (20124), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-07 17:33:34,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15897 states to 15897 states and 20160 transitions. [2021-11-07 17:33:34,711 INFO L78 Accepts]: Start accepts. Automaton has 15897 states and 20160 transitions. Word has length 170 [2021-11-07 17:33:34,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:33:34,711 INFO L470 AbstractCegarLoop]: Abstraction has 15897 states and 20160 transitions. [2021-11-07 17:33:34,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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) [2021-11-07 17:33:34,712 INFO L276 IsEmpty]: Start isEmpty. Operand 15897 states and 20160 transitions. [2021-11-07 17:33:34,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-11-07 17:33:34,715 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:33:34,716 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:33:34,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-07 17:33:34,716 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr61ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-07 17:33:34,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:33:34,716 INFO L85 PathProgramCache]: Analyzing trace with hash 633163829, now seen corresponding path program 1 times [2021-11-07 17:33:34,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:33:34,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531079060] [2021-11-07 17:33:34,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:33:34,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:33:34,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:33:34,874 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 17:33:34,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:33:34,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531079060] [2021-11-07 17:33:34,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531079060] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:33:34,875 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:33:34,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:33:34,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267594101] [2021-11-07 17:33:34,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:33:34,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:33:34,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:33:34,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:33:34,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:33:34,876 INFO L87 Difference]: Start difference. First operand 15897 states and 20160 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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) [2021-11-07 17:33:36,927 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 [] [2021-11-07 17:33:37,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:33:37,879 INFO L93 Difference]: Finished difference Result 34114 states and 43321 transitions. [2021-11-07 17:33:37,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:33:37,880 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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 170 [2021-11-07 17:33:37,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:33:37,912 INFO L225 Difference]: With dead ends: 34114 [2021-11-07 17:33:37,912 INFO L226 Difference]: Without dead ends: 18381 [2021-11-07 17:33:37,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.39ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:33:37,938 INFO L933 BasicCegarLoop]: 3435 mSDtfsCounter, 1915 mSDsluCounter, 1471 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2229.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1915 SdHoareTripleChecker+Valid, 4906 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.95ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2406.49ms IncrementalHoareTripleChecker+Time [2021-11-07 17:33:37,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1915 Valid, 4906 Invalid, 76 Unknown, 0 Unchecked, 3.95ms Time], IncrementalHoareTripleChecker [14 Valid, 61 Invalid, 1 Unknown, 0 Unchecked, 2406.49ms Time] [2021-11-07 17:33:37,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18381 states. [2021-11-07 17:33:38,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18381 to 18339. [2021-11-07 17:33:38,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18339 states, 18292 states have (on average 1.2692433850863765) internal successors, (23217), 18314 states have internal predecessors, (23217), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-07 17:33:38,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18339 states to 18339 states and 23253 transitions. [2021-11-07 17:33:38,859 INFO L78 Accepts]: Start accepts. Automaton has 18339 states and 23253 transitions. Word has length 170 [2021-11-07 17:33:38,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:33:38,859 INFO L470 AbstractCegarLoop]: Abstraction has 18339 states and 23253 transitions. [2021-11-07 17:33:38,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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) [2021-11-07 17:33:38,860 INFO L276 IsEmpty]: Start isEmpty. Operand 18339 states and 23253 transitions. [2021-11-07 17:33:38,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-11-07 17:33:38,866 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:33:38,866 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:33:38,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-07 17:33:38,866 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr61ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-07 17:33:38,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:33:38,867 INFO L85 PathProgramCache]: Analyzing trace with hash 613054494, now seen corresponding path program 1 times [2021-11-07 17:33:38,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:33:38,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208729030] [2021-11-07 17:33:38,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:33:38,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:33:38,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:33:39,053 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-07 17:33:39,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:33:39,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208729030] [2021-11-07 17:33:39,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208729030] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:33:39,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:33:39,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:33:39,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013644168] [2021-11-07 17:33:39,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:33:39,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:33:39,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:33:39,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:33:39,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:33:39,055 INFO L87 Difference]: Start difference. First operand 18339 states and 23253 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 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) [2021-11-07 17:33:41,144 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 17:33:42,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:33:42,270 INFO L93 Difference]: Finished difference Result 38986 states and 49483 transitions. [2021-11-07 17:33:42,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:33:42,271 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 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 213 [2021-11-07 17:33:42,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:33:42,298 INFO L225 Difference]: With dead ends: 38986 [2021-11-07 17:33:42,299 INFO L226 Difference]: Without dead ends: 20811 [2021-11-07 17:33:42,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.37ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:33:42,323 INFO L933 BasicCegarLoop]: 2553 mSDtfsCounter, 987 mSDsluCounter, 2397 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2274.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 987 SdHoareTripleChecker+Valid, 4950 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.40ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2483.81ms IncrementalHoareTripleChecker+Time [2021-11-07 17:33:42,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [987 Valid, 4950 Invalid, 72 Unknown, 0 Unchecked, 3.40ms Time], IncrementalHoareTripleChecker [10 Valid, 61 Invalid, 1 Unknown, 0 Unchecked, 2483.81ms Time] [2021-11-07 17:33:42,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20811 states. [2021-11-07 17:33:42,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20811 to 20769. [2021-11-07 17:33:42,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20769 states, 20722 states have (on average 1.269085995560274) internal successors, (26298), 20744 states have internal predecessors, (26298), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-07 17:33:42,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20769 states to 20769 states and 26334 transitions. [2021-11-07 17:33:42,999 INFO L78 Accepts]: Start accepts. Automaton has 20769 states and 26334 transitions. Word has length 213 [2021-11-07 17:33:42,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:33:42,999 INFO L470 AbstractCegarLoop]: Abstraction has 20769 states and 26334 transitions. [2021-11-07 17:33:42,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 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) [2021-11-07 17:33:43,000 INFO L276 IsEmpty]: Start isEmpty. Operand 20769 states and 26334 transitions. [2021-11-07 17:33:43,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-11-07 17:33:43,005 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:33:43,005 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:33:43,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-07 17:33:43,005 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr61ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-07 17:33:43,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:33:43,006 INFO L85 PathProgramCache]: Analyzing trace with hash 120428320, now seen corresponding path program 1 times [2021-11-07 17:33:43,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:33:43,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509309979] [2021-11-07 17:33:43,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:33:43,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:33:43,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:33:43,177 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-07 17:33:43,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:33:43,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509309979] [2021-11-07 17:33:43,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509309979] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:33:43,178 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:33:43,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:33:43,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135101616] [2021-11-07 17:33:43,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:33:43,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:33:43,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:33:43,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:33:43,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:33:43,179 INFO L87 Difference]: Start difference. First operand 20769 states and 26334 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 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) [2021-11-07 17:33:45,231 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 [] [2021-11-07 17:33:46,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:33:46,428 INFO L93 Difference]: Finished difference Result 43852 states and 55657 transitions. [2021-11-07 17:33:46,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:33:46,428 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 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 213 [2021-11-07 17:33:46,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:33:46,465 INFO L225 Difference]: With dead ends: 43852 [2021-11-07 17:33:46,465 INFO L226 Difference]: Without dead ends: 23247 [2021-11-07 17:33:46,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.47ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:33:46,498 INFO L933 BasicCegarLoop]: 3435 mSDtfsCounter, 996 mSDsluCounter, 2389 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2234.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 996 SdHoareTripleChecker+Valid, 5824 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.83ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2427.26ms IncrementalHoareTripleChecker+Time [2021-11-07 17:33:46,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [996 Valid, 5824 Invalid, 74 Unknown, 0 Unchecked, 3.83ms Time], IncrementalHoareTripleChecker [11 Valid, 62 Invalid, 1 Unknown, 0 Unchecked, 2427.26ms Time] [2021-11-07 17:33:46,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23247 states. [2021-11-07 17:33:47,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23247 to 23205. [2021-11-07 17:33:47,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23205 states, 23158 states have (on average 1.2688919595820018) internal successors, (29385), 23180 states have internal predecessors, (29385), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-07 17:33:47,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23205 states to 23205 states and 29421 transitions. [2021-11-07 17:33:47,397 INFO L78 Accepts]: Start accepts. Automaton has 23205 states and 29421 transitions. Word has length 213 [2021-11-07 17:33:47,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:33:47,398 INFO L470 AbstractCegarLoop]: Abstraction has 23205 states and 29421 transitions. [2021-11-07 17:33:47,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 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) [2021-11-07 17:33:47,398 INFO L276 IsEmpty]: Start isEmpty. Operand 23205 states and 29421 transitions. [2021-11-07 17:33:47,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-11-07 17:33:47,406 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:33:47,406 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:33:47,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-07 17:33:47,406 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting check_sigErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-07 17:33:47,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:33:47,406 INFO L85 PathProgramCache]: Analyzing trace with hash -957563151, now seen corresponding path program 1 times [2021-11-07 17:33:47,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:33:47,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415529724] [2021-11-07 17:33:47,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:33:47,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:33:47,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:33:47,592 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-07 17:33:47,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:33:47,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415529724] [2021-11-07 17:33:47,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415529724] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:33:47,593 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:33:47,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:33:47,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500948087] [2021-11-07 17:33:47,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:33:47,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:33:47,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:33:47,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:33:47,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:33:47,595 INFO L87 Difference]: Start difference. First operand 23205 states and 29421 transitions. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:33:49,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:33:49,279 INFO L93 Difference]: Finished difference Result 67957 states and 86223 transitions. [2021-11-07 17:33:49,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:33:49,281 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 235 [2021-11-07 17:33:49,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:33:49,362 INFO L225 Difference]: With dead ends: 67957 [2021-11-07 17:33:49,363 INFO L226 Difference]: Without dead ends: 44916 [2021-11-07 17:33:49,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.75ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:33:49,405 INFO L933 BasicCegarLoop]: 4499 mSDtfsCounter, 2054 mSDsluCounter, 2449 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2056 SdHoareTripleChecker+Valid, 6948 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.33ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.18ms IncrementalHoareTripleChecker+Time [2021-11-07 17:33:49,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2056 Valid, 6948 Invalid, 7 Unknown, 0 Unchecked, 5.33ms Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 25.18ms Time] [2021-11-07 17:33:49,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44916 states. [2021-11-07 17:33:50,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44916 to 23211. [2021-11-07 17:33:50,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23211 states, 23164 states have (on average 1.2688223104817822) internal successors, (29391), 23186 states have internal predecessors, (29391), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-07 17:33:50,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23211 states to 23211 states and 29427 transitions. [2021-11-07 17:33:50,635 INFO L78 Accepts]: Start accepts. Automaton has 23211 states and 29427 transitions. Word has length 235 [2021-11-07 17:33:50,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:33:50,635 INFO L470 AbstractCegarLoop]: Abstraction has 23211 states and 29427 transitions. [2021-11-07 17:33:50,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:33:50,635 INFO L276 IsEmpty]: Start isEmpty. Operand 23211 states and 29427 transitions. [2021-11-07 17:33:50,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-11-07 17:33:50,642 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:33:50,642 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:33:50,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-07 17:33:50,643 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting check_sigErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-07 17:33:50,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:33:50,643 INFO L85 PathProgramCache]: Analyzing trace with hash -687532564, now seen corresponding path program 1 times [2021-11-07 17:33:50,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:33:50,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556148851] [2021-11-07 17:33:50,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:33:50,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:33:50,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:33:50,886 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-07 17:33:50,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:33:50,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556148851] [2021-11-07 17:33:50,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556148851] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:33:50,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:33:50,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 17:33:50,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724227560] [2021-11-07 17:33:50,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:33:50,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 17:33:50,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:33:50,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 17:33:50,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 17:33:50,888 INFO L87 Difference]: Start difference. First operand 23211 states and 29427 transitions. Second operand has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:33:54,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:33:54,010 INFO L93 Difference]: Finished difference Result 86883 states and 110142 transitions. [2021-11-07 17:33:54,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 17:33:54,011 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 237 [2021-11-07 17:33:54,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:33:54,141 INFO L225 Difference]: With dead ends: 86883 [2021-11-07 17:33:54,142 INFO L226 Difference]: Without dead ends: 63836 [2021-11-07 17:33:54,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 66.65ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 17:33:54,189 INFO L933 BasicCegarLoop]: 4454 mSDtfsCounter, 4947 mSDsluCounter, 6872 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 471.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4949 SdHoareTripleChecker+Valid, 11326 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.86ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 495.79ms IncrementalHoareTripleChecker+Time [2021-11-07 17:33:54,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4949 Valid, 11326 Invalid, 56 Unknown, 0 Unchecked, 9.86ms Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 495.79ms Time] [2021-11-07 17:33:54,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63836 states. [2021-11-07 17:33:55,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63836 to 23223. [2021-11-07 17:33:55,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23223 states, 23176 states have (on average 1.268683120469451) internal successors, (29403), 23198 states have internal predecessors, (29403), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-07 17:33:55,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23223 states to 23223 states and 29439 transitions. [2021-11-07 17:33:55,955 INFO L78 Accepts]: Start accepts. Automaton has 23223 states and 29439 transitions. Word has length 237 [2021-11-07 17:33:55,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:33:55,956 INFO L470 AbstractCegarLoop]: Abstraction has 23223 states and 29439 transitions. [2021-11-07 17:33:55,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:33:55,957 INFO L276 IsEmpty]: Start isEmpty. Operand 23223 states and 29439 transitions. [2021-11-07 17:33:55,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-11-07 17:33:55,973 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:33:55,973 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:33:55,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-07 17:33:55,973 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting check_sigErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-07 17:33:55,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:33:55,974 INFO L85 PathProgramCache]: Analyzing trace with hash 183480992, now seen corresponding path program 1 times [2021-11-07 17:33:55,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:33:55,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44285455] [2021-11-07 17:33:55,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:33:55,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:33:56,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:33:56,169 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-07 17:33:56,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:33:56,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44285455] [2021-11-07 17:33:56,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44285455] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:33:56,170 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:33:56,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:33:56,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972463394] [2021-11-07 17:33:56,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:33:56,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:33:56,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:33:56,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:33:56,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:33:56,172 INFO L87 Difference]: Start difference. First operand 23223 states and 29439 transitions. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:33:57,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:33:57,496 INFO L93 Difference]: Finished difference Result 46288 states and 58702 transitions. [2021-11-07 17:33:57,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:33:57,497 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 237 [2021-11-07 17:33:57,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:33:57,533 INFO L225 Difference]: With dead ends: 46288 [2021-11-07 17:33:57,534 INFO L226 Difference]: Without dead ends: 23229 [2021-11-07 17:33:57,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.99ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:33:57,563 INFO L933 BasicCegarLoop]: 2451 mSDtfsCounter, 0 mSDsluCounter, 2445 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 98.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4896 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.86ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 106.52ms IncrementalHoareTripleChecker+Time [2021-11-07 17:33:57,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 4896 Invalid, 7 Unknown, 0 Unchecked, 2.86ms Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 106.52ms Time] [2021-11-07 17:33:57,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23229 states. [2021-11-07 17:33:58,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23229 to 23229. [2021-11-07 17:33:58,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23229 states, 23182 states have (on average 1.2686135795013374) internal successors, (29409), 23204 states have internal predecessors, (29409), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-07 17:33:59,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23229 states to 23229 states and 29445 transitions. [2021-11-07 17:33:59,029 INFO L78 Accepts]: Start accepts. Automaton has 23229 states and 29445 transitions. Word has length 237 [2021-11-07 17:33:59,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:33:59,029 INFO L470 AbstractCegarLoop]: Abstraction has 23229 states and 29445 transitions. [2021-11-07 17:33:59,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:33:59,029 INFO L276 IsEmpty]: Start isEmpty. Operand 23229 states and 29445 transitions. [2021-11-07 17:33:59,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-11-07 17:33:59,035 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:33:59,035 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:33:59,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-07 17:33:59,036 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting check_sigErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-07 17:33:59,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:33:59,036 INFO L85 PathProgramCache]: Analyzing trace with hash -484662460, now seen corresponding path program 1 times [2021-11-07 17:33:59,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:33:59,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65711303] [2021-11-07 17:33:59,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:33:59,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:33:59,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:33:59,245 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-07 17:33:59,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:33:59,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65711303] [2021-11-07 17:33:59,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65711303] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:33:59,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:33:59,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 17:33:59,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636150621] [2021-11-07 17:33:59,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:33:59,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 17:33:59,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:33:59,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 17:33:59,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 17:33:59,247 INFO L87 Difference]: Start difference. First operand 23229 states and 29445 transitions. Second operand has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:34:03,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:34:03,212 INFO L93 Difference]: Finished difference Result 86997 states and 110256 transitions. [2021-11-07 17:34:03,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 17:34:03,213 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 238 [2021-11-07 17:34:03,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:34:03,329 INFO L225 Difference]: With dead ends: 86997 [2021-11-07 17:34:03,329 INFO L226 Difference]: Without dead ends: 63932 [2021-11-07 17:34:03,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.95ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 17:34:03,366 INFO L933 BasicCegarLoop]: 4479 mSDtfsCounter, 4957 mSDsluCounter, 6882 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 360.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4959 SdHoareTripleChecker+Valid, 11361 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.62ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 384.65ms IncrementalHoareTripleChecker+Time [2021-11-07 17:34:03,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4959 Valid, 11361 Invalid, 56 Unknown, 0 Unchecked, 10.62ms Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 384.65ms Time] [2021-11-07 17:34:03,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63932 states. [2021-11-07 17:34:04,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63932 to 23241. [2021-11-07 17:34:04,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23241 states, 23194 states have (on average 1.2684746055014229) internal successors, (29421), 23216 states have internal predecessors, (29421), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-07 17:34:04,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23241 states to 23241 states and 29457 transitions. [2021-11-07 17:34:04,962 INFO L78 Accepts]: Start accepts. Automaton has 23241 states and 29457 transitions. Word has length 238 [2021-11-07 17:34:04,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:34:04,962 INFO L470 AbstractCegarLoop]: Abstraction has 23241 states and 29457 transitions. [2021-11-07 17:34:04,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:34:04,963 INFO L276 IsEmpty]: Start isEmpty. Operand 23241 states and 29457 transitions. [2021-11-07 17:34:04,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-11-07 17:34:04,969 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:34:04,969 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:34:04,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-07 17:34:04,970 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr61ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-07 17:34:04,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:34:04,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1053554916, now seen corresponding path program 1 times [2021-11-07 17:34:04,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:34:04,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267767559] [2021-11-07 17:34:04,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:34:04,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:34:05,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:34:05,183 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-11-07 17:34:05,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:34:05,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267767559] [2021-11-07 17:34:05,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267767559] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:34:05,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:34:05,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 17:34:05,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443599751] [2021-11-07 17:34:05,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:34:05,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 17:34:05,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:34:05,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 17:34:05,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 17:34:05,185 INFO L87 Difference]: Start difference. First operand 23241 states and 29457 transitions. Second operand has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 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) [2021-11-07 17:34:07,245 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 []