./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-amd-amd8111e.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 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-amd-amd8111e.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 8dda3f7c080a6e7302d861accabde0bee64e4cb5e7a0fb77650fdd775ecd7779 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 18:56:40,627 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 18:56:40,641 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 18:56:40,676 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 18:56:40,677 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 18:56:40,679 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 18:56:40,680 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 18:56:40,683 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 18:56:40,685 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 18:56:40,688 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 18:56:40,688 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 18:56:40,689 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 18:56:40,689 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 18:56:40,691 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 18:56:40,692 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 18:56:40,695 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 18:56:40,696 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 18:56:40,696 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 18:56:40,698 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 18:56:40,702 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 18:56:40,702 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 18:56:40,703 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 18:56:40,704 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 18:56:40,705 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 18:56:40,707 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 18:56:40,708 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 18:56:40,708 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 18:56:40,708 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 18:56:40,709 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 18:56:40,709 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 18:56:40,709 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 18:56:40,710 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 18:56:40,710 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 18:56:40,711 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 18:56:40,711 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 18:56:40,711 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 18:56:40,712 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 18:56:40,712 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 18:56:40,712 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 18:56:40,713 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 18:56:40,713 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 18:56:40,714 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 18:56:40,726 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 18:56:40,726 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 18:56:40,726 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 18:56:40,727 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 18:56:40,727 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 18:56:40,727 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 18:56:40,727 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 18:56:40,728 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 18:56:40,728 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 18:56:40,728 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 18:56:40,728 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 18:56:40,728 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 18:56:40,728 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 18:56:40,728 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 18:56:40,728 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 18:56:40,728 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 18:56:40,728 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 18:56:40,728 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 18:56:40,728 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 18:56:40,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 18:56:40,729 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 18:56:40,729 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 18:56:40,729 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 18:56:40,729 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 18:56:40,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 18:56:40,729 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 18:56:40,729 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 18:56:40,729 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 18:56:40,729 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 18:56:40,729 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8dda3f7c080a6e7302d861accabde0bee64e4cb5e7a0fb77650fdd775ecd7779 [2021-11-06 18:56:40,901 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 18:56:40,917 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 18:56:40,920 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 18:56:40,921 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 18:56:40,922 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 18:56:40,922 INFO L432 ainManager$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-amd-amd8111e.cil.i [2021-11-06 18:56:40,969 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89baec45d/c92ad4aa9b154595bf564e5ad5a4d2b4/FLAG061541491 [2021-11-06 18:56:41,630 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 18:56:41,630 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-amd-amd8111e.cil.i [2021-11-06 18:56:41,669 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89baec45d/c92ad4aa9b154595bf564e5ad5a4d2b4/FLAG061541491 [2021-11-06 18:56:41,947 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89baec45d/c92ad4aa9b154595bf564e5ad5a4d2b4 [2021-11-06 18:56:41,949 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 18:56:41,951 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 18:56:41,953 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 18:56:41,954 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 18:56:41,956 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 18:56:41,956 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:56:41" (1/1) ... [2021-11-06 18:56:41,957 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25d692b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:56:41, skipping insertion in model container [2021-11-06 18:56:41,957 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:56:41" (1/1) ... [2021-11-06 18:56:41,962 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 18:56:42,077 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 18:56:43,759 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-amd-amd8111e.cil.i[334651,334664] [2021-11-06 18:56:43,761 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-amd-amd8111e.cil.i[334820,334833] [2021-11-06 18:56:43,761 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-amd-amd8111e.cil.i[334987,335000] [2021-11-06 18:56:43,762 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-amd-amd8111e.cil.i[335155,335168] [2021-11-06 18:56:43,775 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 18:56:43,793 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 18:56:44,007 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-amd-amd8111e.cil.i[334651,334664] [2021-11-06 18:56:44,008 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-amd-amd8111e.cil.i[334820,334833] [2021-11-06 18:56:44,008 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-amd-amd8111e.cil.i[334987,335000] [2021-11-06 18:56:44,009 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-amd-amd8111e.cil.i[335155,335168] [2021-11-06 18:56:44,014 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 18:56:44,139 INFO L208 MainTranslator]: Completed translation [2021-11-06 18:56:44,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:56:44 WrapperNode [2021-11-06 18:56:44,140 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 18:56:44,141 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 18:56:44,141 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 18:56:44,141 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 18:56:44,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:56:44" (1/1) ... [2021-11-06 18:56:44,221 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:56:44" (1/1) ... [2021-11-06 18:56:44,735 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 18:56:44,736 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 18:56:44,736 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 18:56:44,737 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 18:56:44,742 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:56:44" (1/1) ... [2021-11-06 18:56:44,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:56:44" (1/1) ... [2021-11-06 18:56:44,870 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:56:44" (1/1) ... [2021-11-06 18:56:44,871 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:56:44" (1/1) ... [2021-11-06 18:56:45,315 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:56:44" (1/1) ... [2021-11-06 18:56:45,428 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:56:44" (1/1) ... [2021-11-06 18:56:45,539 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:56:44" (1/1) ... [2021-11-06 18:56:45,664 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 18:56:45,666 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 18:56:45,666 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 18:56:45,667 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 18:56:45,668 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:56:44" (1/1) ... [2021-11-06 18:56:45,685 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 18:56:45,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 18:56:45,737 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) [2021-11-06 18:56:45,753 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 [2021-11-06 18:56:45,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 18:56:45,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 18:56:45,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 18:56:45,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 18:56:45,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 18:56:45,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 18:56:45,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 18:56:45,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 18:56:45,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 18:56:45,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 18:56:45,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 18:56:45,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 18:56:45,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 18:56:45,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 18:56:45,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 18:56:54,528 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-06 18:56:54,529 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-06 18:56:54,529 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-06 18:56:54,529 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-06 18:56:54,530 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 18:56:54,531 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-06 18:56:54,560 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 18:56:54,560 INFO L299 CfgBuilder]: Removed 6998 assume(true) statements. [2021-11-06 18:56:54,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:56:54 BoogieIcfgContainer [2021-11-06 18:56:54,565 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 18:56:54,567 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 18:56:54,567 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 18:56:54,569 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 18:56:54,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 06:56:41" (1/3) ... [2021-11-06 18:56:54,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2724371b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:56:54, skipping insertion in model container [2021-11-06 18:56:54,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:56:44" (2/3) ... [2021-11-06 18:56:54,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2724371b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:56:54, skipping insertion in model container [2021-11-06 18:56:54,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:56:54" (3/3) ... [2021-11-06 18:56:54,571 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-amd8111e.cil.i [2021-11-06 18:56:54,574 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 18:56:54,574 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 78 error locations. [2021-11-06 18:56:54,622 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 18:56:54,626 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 [2021-11-06 18:56:54,626 INFO L340 AbstractCegarLoop]: Starting to check reachability of 78 error locations. [2021-11-06 18:56:54,684 INFO L276 IsEmpty]: Start isEmpty. Operand has 5901 states, 5823 states have (on average 1.3068864846299157) internal successors, (7610), 5900 states have internal predecessors, (7610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:56:54,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-06 18:56:54,689 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:56:54,690 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:56:54,690 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 75 more)] === [2021-11-06 18:56:54,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:56:54,694 INFO L85 PathProgramCache]: Analyzing trace with hash -481796582, now seen corresponding path program 1 times [2021-11-06 18:56:54,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:56:54,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895790915] [2021-11-06 18:56:54,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:56:54,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:56:54,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:56:55,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:56:55,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:56:55,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895790915] [2021-11-06 18:56:55,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895790915] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:56:55,052 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:56:55,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:56:55,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289053497] [2021-11-06 18:56:55,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:56:55,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:56:55,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:56:55,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:56:55,076 INFO L87 Difference]: Start difference. First operand has 5901 states, 5823 states have (on average 1.3068864846299157) internal successors, (7610), 5900 states have internal predecessors, (7610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:56:55,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:56:55,527 INFO L93 Difference]: Finished difference Result 17355 states and 22387 transitions. [2021-11-06 18:56:55,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:56:55,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-06 18:56:55,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:56:55,580 INFO L225 Difference]: With dead ends: 17355 [2021-11-06 18:56:55,580 INFO L226 Difference]: Without dead ends: 11237 [2021-11-06 18:56:55,599 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:56:55,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11237 states. [2021-11-06 18:56:55,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11237 to 11129. [2021-11-06 18:56:55,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11129 states, 11051 states have (on average 1.2624196905257443) internal successors, (13951), 11128 states have internal predecessors, (13951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:56:55,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11129 states to 11129 states and 13951 transitions. [2021-11-06 18:56:55,881 INFO L78 Accepts]: Start accepts. Automaton has 11129 states and 13951 transitions. Word has length 45 [2021-11-06 18:56:55,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:56:55,882 INFO L470 AbstractCegarLoop]: Abstraction has 11129 states and 13951 transitions. [2021-11-06 18:56:55,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:56:55,883 INFO L276 IsEmpty]: Start isEmpty. Operand 11129 states and 13951 transitions. [2021-11-06 18:56:55,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-06 18:56:55,888 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:56:55,888 INFO L513 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] [2021-11-06 18:56:55,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 18:56:55,888 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 75 more)] === [2021-11-06 18:56:55,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:56:55,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1445610242, now seen corresponding path program 1 times [2021-11-06 18:56:55,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:56:55,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624444619] [2021-11-06 18:56:55,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:56:55,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:56:55,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:56:56,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:56:56,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:56:56,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624444619] [2021-11-06 18:56:56,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624444619] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:56:56,160 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:56:56,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:56:56,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809325988] [2021-11-06 18:56:56,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:56:56,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:56:56,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:56:56,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:56:56,164 INFO L87 Difference]: Start difference. First operand 11129 states and 13951 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:56:56,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:56:56,769 INFO L93 Difference]: Finished difference Result 31153 states and 39121 transitions. [2021-11-06 18:56:56,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:56:56,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-11-06 18:56:56,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:56:56,835 INFO L225 Difference]: With dead ends: 31153 [2021-11-06 18:56:56,836 INFO L226 Difference]: Without dead ends: 20108 [2021-11-06 18:56:56,858 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:56:56,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20108 states. [2021-11-06 18:56:57,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20108 to 19342. [2021-11-06 18:56:57,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19342 states, 19264 states have (on average 1.2681686046511629) internal successors, (24430), 19341 states have internal predecessors, (24430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:56:57,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19342 states to 19342 states and 24430 transitions. [2021-11-06 18:56:57,283 INFO L78 Accepts]: Start accepts. Automaton has 19342 states and 24430 transitions. Word has length 48 [2021-11-06 18:56:57,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:56:57,284 INFO L470 AbstractCegarLoop]: Abstraction has 19342 states and 24430 transitions. [2021-11-06 18:56:57,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:56:57,285 INFO L276 IsEmpty]: Start isEmpty. Operand 19342 states and 24430 transitions. [2021-11-06 18:56:57,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-06 18:56:57,287 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:56:57,288 INFO L513 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] [2021-11-06 18:56:57,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 18:56:57,292 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 75 more)] === [2021-11-06 18:56:57,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:56:57,293 INFO L85 PathProgramCache]: Analyzing trace with hash -34310452, now seen corresponding path program 1 times [2021-11-06 18:56:57,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:56:57,293 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620475481] [2021-11-06 18:56:57,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:56:57,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:56:57,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:56:57,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:56:57,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:56:57,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620475481] [2021-11-06 18:56:57,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620475481] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:56:57,498 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:56:57,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:56:57,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044045967] [2021-11-06 18:56:57,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:56:57,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:56:57,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:56:57,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:56:57,500 INFO L87 Difference]: Start difference. First operand 19342 states and 24430 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:56:58,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:56:58,533 INFO L93 Difference]: Finished difference Result 51722 states and 65284 transitions. [2021-11-06 18:56:58,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:56:58,534 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2021-11-06 18:56:58,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:56:58,619 INFO L225 Difference]: With dead ends: 51722 [2021-11-06 18:56:58,620 INFO L226 Difference]: Without dead ends: 32464 [2021-11-06 18:56:58,658 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:56:58,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32464 states. [2021-11-06 18:56:59,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32464 to 30986. [2021-11-06 18:56:59,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30986 states, 30908 states have (on average 1.2695742202665976) internal successors, (39240), 30985 states have internal predecessors, (39240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:56:59,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30986 states to 30986 states and 39240 transitions. [2021-11-06 18:56:59,694 INFO L78 Accepts]: Start accepts. Automaton has 30986 states and 39240 transitions. Word has length 53 [2021-11-06 18:56:59,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:56:59,696 INFO L470 AbstractCegarLoop]: Abstraction has 30986 states and 39240 transitions. [2021-11-06 18:56:59,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:56:59,696 INFO L276 IsEmpty]: Start isEmpty. Operand 30986 states and 39240 transitions. [2021-11-06 18:56:59,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-06 18:56:59,697 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:56:59,697 INFO L513 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] [2021-11-06 18:56:59,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 18:56:59,698 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr58ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 75 more)] === [2021-11-06 18:56:59,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:56:59,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1062801472, now seen corresponding path program 1 times [2021-11-06 18:56:59,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:56:59,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263666380] [2021-11-06 18:56:59,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:56:59,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:56:59,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:56:59,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:56:59,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:56:59,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263666380] [2021-11-06 18:56:59,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263666380] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:56:59,796 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:56:59,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:56:59,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154893299] [2021-11-06 18:56:59,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:56:59,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:56:59,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:56:59,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:56:59,798 INFO L87 Difference]: Start difference. First operand 30986 states and 39240 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:57:00,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:57:00,441 INFO L93 Difference]: Finished difference Result 50680 states and 64245 transitions. [2021-11-06 18:57:00,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:57:00,441 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2021-11-06 18:57:00,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:57:00,479 INFO L225 Difference]: With dead ends: 50680 [2021-11-06 18:57:00,480 INFO L226 Difference]: Without dead ends: 19778 [2021-11-06 18:57:00,518 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:57:00,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19778 states. [2021-11-06 18:57:00,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19778 to 19656. [2021-11-06 18:57:00,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19656 states, 19578 states have (on average 1.2729594442741854) internal successors, (24922), 19655 states have internal predecessors, (24922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:57:00,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19656 states to 19656 states and 24922 transitions. [2021-11-06 18:57:00,966 INFO L78 Accepts]: Start accepts. Automaton has 19656 states and 24922 transitions. Word has length 53 [2021-11-06 18:57:00,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:57:00,967 INFO L470 AbstractCegarLoop]: Abstraction has 19656 states and 24922 transitions. [2021-11-06 18:57:00,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:57:00,967 INFO L276 IsEmpty]: Start isEmpty. Operand 19656 states and 24922 transitions. [2021-11-06 18:57:00,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-06 18:57:00,968 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:57:00,968 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 18:57:00,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 18:57:00,969 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 75 more)] === [2021-11-06 18:57:00,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:57:00,969 INFO L85 PathProgramCache]: Analyzing trace with hash 2000051397, now seen corresponding path program 1 times [2021-11-06 18:57:00,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:57:00,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195960531] [2021-11-06 18:57:00,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:57:00,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:57:01,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:57:01,083 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:57:01,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:57:01,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195960531] [2021-11-06 18:57:01,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195960531] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:57:01,084 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:57:01,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:57:01,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026555610] [2021-11-06 18:57:01,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:57:01,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:57:01,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:57:01,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:57:01,085 INFO L87 Difference]: Start difference. First operand 19656 states and 24922 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:57:01,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:57:01,896 INFO L93 Difference]: Finished difference Result 58422 states and 74154 transitions. [2021-11-06 18:57:01,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:57:01,896 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2021-11-06 18:57:01,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:57:01,968 INFO L225 Difference]: With dead ends: 58422 [2021-11-06 18:57:01,969 INFO L226 Difference]: Without dead ends: 38896 [2021-11-06 18:57:01,999 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:57:02,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38896 states. [2021-11-06 18:57:02,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38896 to 38774. [2021-11-06 18:57:02,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38774 states, 38696 states have (on average 1.2741368616911308) internal successors, (49304), 38773 states have internal predecessors, (49304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:57:02,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38774 states to 38774 states and 49304 transitions. [2021-11-06 18:57:02,629 INFO L78 Accepts]: Start accepts. Automaton has 38774 states and 49304 transitions. Word has length 70 [2021-11-06 18:57:02,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:57:02,630 INFO L470 AbstractCegarLoop]: Abstraction has 38774 states and 49304 transitions. [2021-11-06 18:57:02,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:57:02,630 INFO L276 IsEmpty]: Start isEmpty. Operand 38774 states and 49304 transitions. [2021-11-06 18:57:02,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-06 18:57:02,631 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:57:02,631 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 18:57:02,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 18:57:02,632 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 75 more)] === [2021-11-06 18:57:02,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:57:02,632 INFO L85 PathProgramCache]: Analyzing trace with hash -2036750461, now seen corresponding path program 1 times [2021-11-06 18:57:02,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:57:02,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191092081] [2021-11-06 18:57:02,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:57:02,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:57:02,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:57:02,919 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 18:57:02,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:57:02,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191092081] [2021-11-06 18:57:02,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191092081] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:57:02,920 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:57:02,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:57:02,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031236339] [2021-11-06 18:57:02,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:57:02,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:57:02,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:57:02,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:57:02,921 INFO L87 Difference]: Start difference. First operand 38774 states and 49304 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:57:03,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:57:03,528 INFO L93 Difference]: Finished difference Result 38774 states and 49304 transitions. [2021-11-06 18:57:03,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 18:57:03,529 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 70 [2021-11-06 18:57:03,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:57:03,592 INFO L225 Difference]: With dead ends: 38774 [2021-11-06 18:57:03,593 INFO L226 Difference]: Without dead ends: 38770 [2021-11-06 18:57:03,607 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:57:03,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38770 states. [2021-11-06 18:57:04,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38770 to 38770. [2021-11-06 18:57:04,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38770 states, 38694 states have (on average 1.2740993435674781) internal successors, (49300), 38769 states have internal predecessors, (49300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:57:04,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38770 states to 38770 states and 49300 transitions. [2021-11-06 18:57:04,400 INFO L78 Accepts]: Start accepts. Automaton has 38770 states and 49300 transitions. Word has length 70 [2021-11-06 18:57:04,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:57:04,400 INFO L470 AbstractCegarLoop]: Abstraction has 38770 states and 49300 transitions. [2021-11-06 18:57:04,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:57:04,400 INFO L276 IsEmpty]: Start isEmpty. Operand 38770 states and 49300 transitions. [2021-11-06 18:57:04,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-06 18:57:04,401 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:57:04,402 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 18:57:04,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 18:57:04,402 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 75 more)] === [2021-11-06 18:57:04,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:57:04,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1188034950, now seen corresponding path program 1 times [2021-11-06 18:57:04,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:57:04,403 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052497937] [2021-11-06 18:57:04,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:57:04,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:57:04,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:57:04,506 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 18:57:04,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:57:04,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052497937] [2021-11-06 18:57:04,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052497937] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:57:04,507 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:57:04,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:57:04,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74794623] [2021-11-06 18:57:04,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:57:04,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:57:04,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:57:04,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:57:04,509 INFO L87 Difference]: Start difference. First operand 38770 states and 49300 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:57:05,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:57:05,127 INFO L93 Difference]: Finished difference Result 38770 states and 49300 transitions. [2021-11-06 18:57:05,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 18:57:05,128 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 72 [2021-11-06 18:57:05,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:57:05,197 INFO L225 Difference]: With dead ends: 38770 [2021-11-06 18:57:05,197 INFO L226 Difference]: Without dead ends: 38766 [2021-11-06 18:57:05,212 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:57:05,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38766 states. [2021-11-06 18:57:05,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38766 to 38766. [2021-11-06 18:57:05,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38766 states, 38692 states have (on average 1.2740618215651813) internal successors, (49296), 38765 states have internal predecessors, (49296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:57:06,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38766 states to 38766 states and 49296 transitions. [2021-11-06 18:57:06,031 INFO L78 Accepts]: Start accepts. Automaton has 38766 states and 49296 transitions. Word has length 72 [2021-11-06 18:57:06,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:57:06,031 INFO L470 AbstractCegarLoop]: Abstraction has 38766 states and 49296 transitions. [2021-11-06 18:57:06,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:57:06,031 INFO L276 IsEmpty]: Start isEmpty. Operand 38766 states and 49296 transitions. [2021-11-06 18:57:06,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-06 18:57:06,032 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:57:06,032 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 18:57:06,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 18:57:06,033 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 75 more)] === [2021-11-06 18:57:06,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:57:06,033 INFO L85 PathProgramCache]: Analyzing trace with hash -759572471, now seen corresponding path program 1 times [2021-11-06 18:57:06,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:57:06,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992125554] [2021-11-06 18:57:06,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:57:06,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:57:06,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:57:06,242 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 18:57:06,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:57:06,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992125554] [2021-11-06 18:57:06,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992125554] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:57:06,243 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:57:06,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:57:06,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006874879] [2021-11-06 18:57:06,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:57:06,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:57:06,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:57:06,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:57:06,244 INFO L87 Difference]: Start difference. First operand 38766 states and 49296 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:57:06,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:57:06,809 INFO L93 Difference]: Finished difference Result 38766 states and 49296 transitions. [2021-11-06 18:57:06,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 18:57:06,810 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-06 18:57:06,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:57:06,861 INFO L225 Difference]: With dead ends: 38766 [2021-11-06 18:57:06,861 INFO L226 Difference]: Without dead ends: 38762 [2021-11-06 18:57:06,873 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:57:06,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38762 states. [2021-11-06 18:57:07,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38762 to 38762. [2021-11-06 18:57:07,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38762 states, 38690 states have (on average 1.2740242956836392) internal successors, (49292), 38761 states have internal predecessors, (49292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:57:07,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38762 states to 38762 states and 49292 transitions. [2021-11-06 18:57:07,797 INFO L78 Accepts]: Start accepts. Automaton has 38762 states and 49292 transitions. Word has length 74 [2021-11-06 18:57:07,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:57:07,797 INFO L470 AbstractCegarLoop]: Abstraction has 38762 states and 49292 transitions. [2021-11-06 18:57:07,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:57:07,798 INFO L276 IsEmpty]: Start isEmpty. Operand 38762 states and 49292 transitions. [2021-11-06 18:57:07,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-06 18:57:07,799 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:57:07,799 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 18:57:07,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 18:57:07,799 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 75 more)] === [2021-11-06 18:57:07,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:57:07,800 INFO L85 PathProgramCache]: Analyzing trace with hash 195437324, now seen corresponding path program 1 times [2021-11-06 18:57:07,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:57:07,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504772820] [2021-11-06 18:57:07,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:57:07,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:57:07,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:57:07,943 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 18:57:07,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:57:07,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504772820] [2021-11-06 18:57:07,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504772820] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:57:07,945 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:57:07,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:57:07,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755730811] [2021-11-06 18:57:07,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:57:07,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:57:07,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:57:07,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:57:07,947 INFO L87 Difference]: Start difference. First operand 38762 states and 49292 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:57:08,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:57:08,730 INFO L93 Difference]: Finished difference Result 38762 states and 49292 transitions. [2021-11-06 18:57:08,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 18:57:08,731 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 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 76 [2021-11-06 18:57:08,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:57:08,780 INFO L225 Difference]: With dead ends: 38762 [2021-11-06 18:57:08,781 INFO L226 Difference]: Without dead ends: 38758 [2021-11-06 18:57:08,790 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:57:08,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38758 states. [2021-11-06 18:57:09,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38758 to 38758. [2021-11-06 18:57:09,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38758 states, 38688 states have (on average 1.2739867659222497) internal successors, (49288), 38757 states have internal predecessors, (49288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:57:09,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38758 states to 38758 states and 49288 transitions. [2021-11-06 18:57:09,639 INFO L78 Accepts]: Start accepts. Automaton has 38758 states and 49288 transitions. Word has length 76 [2021-11-06 18:57:09,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:57:09,639 INFO L470 AbstractCegarLoop]: Abstraction has 38758 states and 49288 transitions. [2021-11-06 18:57:09,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:57:09,640 INFO L276 IsEmpty]: Start isEmpty. Operand 38758 states and 49288 transitions. [2021-11-06 18:57:09,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-06 18:57:09,641 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:57:09,641 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 18:57:09,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 18:57:09,641 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 75 more)] === [2021-11-06 18:57:09,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:57:09,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1163150705, now seen corresponding path program 1 times [2021-11-06 18:57:09,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:57:09,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256648080] [2021-11-06 18:57:09,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:57:09,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:57:09,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:57:09,765 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 18:57:09,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:57:09,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256648080] [2021-11-06 18:57:09,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256648080] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:57:09,766 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:57:09,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:57:09,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475606605] [2021-11-06 18:57:09,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:57:09,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:57:09,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:57:09,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:57:09,770 INFO L87 Difference]: Start difference. First operand 38758 states and 49288 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:57:10,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:57:10,594 INFO L93 Difference]: Finished difference Result 38758 states and 49288 transitions. [2021-11-06 18:57:10,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 18:57:10,595 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 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 78 [2021-11-06 18:57:10,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:57:10,653 INFO L225 Difference]: With dead ends: 38758 [2021-11-06 18:57:10,653 INFO L226 Difference]: Without dead ends: 38754 [2021-11-06 18:57:10,669 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:57:10,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38754 states. [2021-11-06 18:57:11,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38754 to 38754. [2021-11-06 18:57:11,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38754 states, 38686 states have (on average 1.2739492322804116) internal successors, (49284), 38753 states have internal predecessors, (49284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:57:11,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38754 states to 38754 states and 49284 transitions. [2021-11-06 18:57:11,710 INFO L78 Accepts]: Start accepts. Automaton has 38754 states and 49284 transitions. Word has length 78 [2021-11-06 18:57:11,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:57:11,710 INFO L470 AbstractCegarLoop]: Abstraction has 38754 states and 49284 transitions. [2021-11-06 18:57:11,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:57:11,711 INFO L276 IsEmpty]: Start isEmpty. Operand 38754 states and 49284 transitions. [2021-11-06 18:57:11,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-06 18:57:11,712 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:57:11,712 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 18:57:11,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 18:57:11,713 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 75 more)] === [2021-11-06 18:57:11,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:57:11,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1096188270, now seen corresponding path program 1 times [2021-11-06 18:57:11,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:57:11,713 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145223136] [2021-11-06 18:57:11,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:57:11,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:57:11,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:57:11,844 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 18:57:11,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:57:11,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145223136] [2021-11-06 18:57:11,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145223136] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:57:11,845 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:57:11,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:57:11,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429514599] [2021-11-06 18:57:11,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:57:11,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:57:11,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:57:11,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:57:11,847 INFO L87 Difference]: Start difference. First operand 38754 states and 49284 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) [2021-11-06 18:57:12,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:57:12,653 INFO L93 Difference]: Finished difference Result 38754 states and 49284 transitions. [2021-11-06 18:57:12,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 18:57:12,653 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 80 [2021-11-06 18:57:12,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:57:12,705 INFO L225 Difference]: With dead ends: 38754 [2021-11-06 18:57:12,705 INFO L226 Difference]: Without dead ends: 38750 [2021-11-06 18:57:12,717 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:57:12,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38750 states. [2021-11-06 18:57:13,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38750 to 38750. [2021-11-06 18:57:13,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38750 states, 38684 states have (on average 1.2739116947575224) internal successors, (49280), 38749 states have internal predecessors, (49280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:57:13,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38750 states to 38750 states and 49280 transitions. [2021-11-06 18:57:13,939 INFO L78 Accepts]: Start accepts. Automaton has 38750 states and 49280 transitions. Word has length 80 [2021-11-06 18:57:13,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:57:13,939 INFO L470 AbstractCegarLoop]: Abstraction has 38750 states and 49280 transitions. [2021-11-06 18:57:13,939 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) [2021-11-06 18:57:13,939 INFO L276 IsEmpty]: Start isEmpty. Operand 38750 states and 49280 transitions. [2021-11-06 18:57:13,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-06 18:57:13,940 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:57:13,940 INFO L513 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] [2021-11-06 18:57:13,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 18:57:13,941 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr58ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 75 more)] === [2021-11-06 18:57:13,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:57:13,941 INFO L85 PathProgramCache]: Analyzing trace with hash 234420320, now seen corresponding path program 1 times [2021-11-06 18:57:13,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:57:13,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354924884] [2021-11-06 18:57:13,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:57:13,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:57:13,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:57:14,013 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:57:14,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:57:14,014 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354924884] [2021-11-06 18:57:14,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354924884] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:57:14,014 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:57:14,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:57:14,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600991386] [2021-11-06 18:57:14,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:57:14,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:57:14,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:57:14,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:57:14,016 INFO L87 Difference]: Start difference. First operand 38750 states and 49280 transitions. Second operand has 3 states, 3 states have (on average 27.0) 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) [2021-11-06 18:57:15,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:57:15,668 INFO L93 Difference]: Finished difference Result 85238 states and 108655 transitions. [2021-11-06 18:57:15,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:57:15,669 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) 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 81 [2021-11-06 18:57:15,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:57:15,740 INFO L225 Difference]: With dead ends: 85238 [2021-11-06 18:57:15,740 INFO L226 Difference]: Without dead ends: 46618 [2021-11-06 18:57:15,789 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:57:15,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46618 states. [2021-11-06 18:57:16,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46618 to 46506. [2021-11-06 18:57:16,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46506 states, 46440 states have (on average 1.277433247200689) internal successors, (59324), 46505 states have internal predecessors, (59324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:57:16,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46506 states to 46506 states and 59324 transitions. [2021-11-06 18:57:16,958 INFO L78 Accepts]: Start accepts. Automaton has 46506 states and 59324 transitions. Word has length 81 [2021-11-06 18:57:16,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:57:16,959 INFO L470 AbstractCegarLoop]: Abstraction has 46506 states and 59324 transitions. [2021-11-06 18:57:16,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) 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) [2021-11-06 18:57:16,959 INFO L276 IsEmpty]: Start isEmpty. Operand 46506 states and 59324 transitions. [2021-11-06 18:57:16,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-06 18:57:16,960 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:57:16,960 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 18:57:16,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-06 18:57:16,960 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 75 more)] === [2021-11-06 18:57:16,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:57:16,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1169797355, now seen corresponding path program 1 times [2021-11-06 18:57:16,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:57:16,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716326040] [2021-11-06 18:57:16,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:57:16,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:57:16,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:57:17,207 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 18:57:17,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:57:17,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716326040] [2021-11-06 18:57:17,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716326040] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:57:17,208 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:57:17,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:57:17,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907777461] [2021-11-06 18:57:17,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:57:17,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:57:17,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:57:17,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:57:17,210 INFO L87 Difference]: Start difference. First operand 46506 states and 59324 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) [2021-11-06 18:57:18,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:57:18,497 INFO L93 Difference]: Finished difference Result 46506 states and 59324 transitions. [2021-11-06 18:57:18,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 18:57:18,498 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 82 [2021-11-06 18:57:18,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:57:18,561 INFO L225 Difference]: With dead ends: 46506 [2021-11-06 18:57:18,561 INFO L226 Difference]: Without dead ends: 46502 [2021-11-06 18:57:18,575 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:57:18,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46502 states. [2021-11-06 18:57:19,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46502 to 46502. [2021-11-06 18:57:19,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46502 states, 46438 states have (on average 1.2774021275679401) internal successors, (59320), 46501 states have internal predecessors, (59320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:57:19,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46502 states to 46502 states and 59320 transitions. [2021-11-06 18:57:19,722 INFO L78 Accepts]: Start accepts. Automaton has 46502 states and 59320 transitions. Word has length 82 [2021-11-06 18:57:19,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:57:19,723 INFO L470 AbstractCegarLoop]: Abstraction has 46502 states and 59320 transitions. [2021-11-06 18:57:19,723 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) [2021-11-06 18:57:19,723 INFO L276 IsEmpty]: Start isEmpty. Operand 46502 states and 59320 transitions. [2021-11-06 18:57:19,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-06 18:57:19,724 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:57:19,724 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 18:57:19,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-06 18:57:19,724 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 75 more)] === [2021-11-06 18:57:19,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:57:19,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1106316312, now seen corresponding path program 1 times [2021-11-06 18:57:19,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:57:19,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042924198] [2021-11-06 18:57:19,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:57:19,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:57:19,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:57:19,816 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 18:57:19,817 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:57:19,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042924198] [2021-11-06 18:57:19,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042924198] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:57:19,817 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:57:19,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:57:19,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362006332] [2021-11-06 18:57:19,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:57:19,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:57:19,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:57:19,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:57:19,819 INFO L87 Difference]: Start difference. First operand 46502 states and 59320 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) [2021-11-06 18:57:20,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:57:20,733 INFO L93 Difference]: Finished difference Result 46502 states and 59320 transitions. [2021-11-06 18:57:20,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 18:57:20,734 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 84 [2021-11-06 18:57:20,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:57:20,807 INFO L225 Difference]: With dead ends: 46502 [2021-11-06 18:57:20,807 INFO L226 Difference]: Without dead ends: 46498 [2021-11-06 18:57:20,828 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:57:20,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46498 states.