./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-realtek-8139cp.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-realtek-8139cp.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 bdbaacac7560cb4317515ea94aeb4341c343c1b3a78ea4f9610ad493958cf26e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 19:03:05,654 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 19:03:05,656 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 19:03:05,716 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 19:03:05,716 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 19:03:05,719 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 19:03:05,720 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 19:03:05,722 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 19:03:05,724 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 19:03:05,728 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 19:03:05,729 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 19:03:05,729 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 19:03:05,730 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 19:03:05,731 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 19:03:05,733 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 19:03:05,737 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 19:03:05,738 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 19:03:05,739 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 19:03:05,740 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 19:03:05,744 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 19:03:05,746 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 19:03:05,746 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 19:03:05,747 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 19:03:05,748 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 19:03:05,750 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 19:03:05,750 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 19:03:05,750 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 19:03:05,751 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 19:03:05,752 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 19:03:05,752 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 19:03:05,752 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 19:03:05,753 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 19:03:05,754 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 19:03:05,755 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 19:03:05,755 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 19:03:05,756 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 19:03:05,756 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 19:03:05,756 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 19:03:05,756 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 19:03:05,757 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 19:03:05,757 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 19:03:05,758 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 19:03:05,783 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 19:03:05,783 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 19:03:05,783 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 19:03:05,784 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 19:03:05,785 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 19:03:05,785 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 19:03:05,785 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 19:03:05,785 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 19:03:05,785 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 19:03:05,785 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 19:03:05,786 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 19:03:05,786 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 19:03:05,786 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 19:03:05,786 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 19:03:05,787 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 19:03:05,787 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 19:03:05,787 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 19:03:05,787 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 19:03:05,787 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 19:03:05,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 19:03:05,788 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 19:03:05,788 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 19:03:05,788 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 19:03:05,788 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 19:03:05,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 19:03:05,788 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 19:03:05,789 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 19:03:05,789 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 19:03:05,789 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 19:03:05,789 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bdbaacac7560cb4317515ea94aeb4341c343c1b3a78ea4f9610ad493958cf26e [2021-11-06 19:03:05,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 19:03:05,983 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 19:03:05,987 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 19:03:05,988 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 19:03:05,989 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 19:03:05,990 INFO L432 ainManager$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-realtek-8139cp.cil.i [2021-11-06 19:03:06,072 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/396a820fa/2559e9b68f9e413482491364fc5b2b5b/FLAGb97c5254d [2021-11-06 19:03:06,664 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 19:03:06,665 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-realtek-8139cp.cil.i [2021-11-06 19:03:06,716 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/396a820fa/2559e9b68f9e413482491364fc5b2b5b/FLAGb97c5254d [2021-11-06 19:03:06,812 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/396a820fa/2559e9b68f9e413482491364fc5b2b5b [2021-11-06 19:03:06,815 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 19:03:06,817 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 19:03:06,819 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 19:03:06,819 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 19:03:06,821 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 19:03:06,822 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:03:06" (1/1) ... [2021-11-06 19:03:06,823 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@162d292c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:06, skipping insertion in model container [2021-11-06 19:03:06,823 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:03:06" (1/1) ... [2021-11-06 19:03:06,828 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 19:03:06,924 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 19:03:08,925 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-realtek-8139cp.cil.i[387186,387199] [2021-11-06 19:03:08,928 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-realtek-8139cp.cil.i[387355,387368] [2021-11-06 19:03:08,929 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-realtek-8139cp.cil.i[387522,387535] [2021-11-06 19:03:08,929 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-realtek-8139cp.cil.i[387690,387703] [2021-11-06 19:03:08,955 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 19:03:09,021 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 19:03:09,261 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-realtek-8139cp.cil.i[387186,387199] [2021-11-06 19:03:09,262 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-realtek-8139cp.cil.i[387355,387368] [2021-11-06 19:03:09,263 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-realtek-8139cp.cil.i[387522,387535] [2021-11-06 19:03:09,263 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-realtek-8139cp.cil.i[387690,387703] [2021-11-06 19:03:09,270 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 19:03:09,444 INFO L208 MainTranslator]: Completed translation [2021-11-06 19:03:09,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:09 WrapperNode [2021-11-06 19:03:09,445 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 19:03:09,446 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 19:03:09,446 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 19:03:09,446 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 19:03:09,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:09" (1/1) ... [2021-11-06 19:03:09,560 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:09" (1/1) ... [2021-11-06 19:03:10,052 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 19:03:10,053 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 19:03:10,053 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 19:03:10,053 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 19:03:10,060 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:09" (1/1) ... [2021-11-06 19:03:10,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:09" (1/1) ... [2021-11-06 19:03:10,213 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:09" (1/1) ... [2021-11-06 19:03:10,213 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:09" (1/1) ... [2021-11-06 19:03:10,700 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:09" (1/1) ... [2021-11-06 19:03:10,836 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:09" (1/1) ... [2021-11-06 19:03:10,900 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:09" (1/1) ... [2021-11-06 19:03:10,990 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 19:03:10,991 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 19:03:10,992 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 19:03:10,992 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 19:03:10,993 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:09" (1/1) ... [2021-11-06 19:03:10,998 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 19:03:11,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 19:03:11,016 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 19:03:11,031 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 19:03:11,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 19:03:11,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 19:03:11,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 19:03:11,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 19:03:11,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 19:03:11,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 19:03:11,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 19:03:11,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 19:03:11,044 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 19:03:11,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 19:03:11,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 19:03:11,044 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 19:03:11,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 19:03:11,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 19:03:11,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 19:04:27,940 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-06 19:04:27,941 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-06 19:04:27,941 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-06 19:04:27,941 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-06 19:04:27,941 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 19:04:27,942 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-06 19:04:27,970 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 19:04:27,970 INFO L299 CfgBuilder]: Removed 5902 assume(true) statements. [2021-11-06 19:04:27,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:04:27 BoogieIcfgContainer [2021-11-06 19:04:27,976 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 19:04:27,978 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 19:04:27,978 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 19:04:27,980 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 19:04:27,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:03:06" (1/3) ... [2021-11-06 19:04:27,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b6d6a6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:04:27, skipping insertion in model container [2021-11-06 19:04:27,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:09" (2/3) ... [2021-11-06 19:04:27,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b6d6a6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:04:27, skipping insertion in model container [2021-11-06 19:04:27,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:04:27" (3/3) ... [2021-11-06 19:04:27,983 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-realtek-8139cp.cil.i [2021-11-06 19:04:27,987 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 19:04:27,988 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 87 error locations. [2021-11-06 19:04:28,033 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 19:04:28,039 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 19:04:28,039 INFO L340 AbstractCegarLoop]: Starting to check reachability of 87 error locations. [2021-11-06 19:04:28,095 INFO L276 IsEmpty]: Start isEmpty. Operand has 4676 states, 4589 states have (on average 1.2933100893440836) internal successors, (5935), 4675 states have internal predecessors, (5935), 0 states have call successors, (0), 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 19:04:28,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-06 19:04:28,103 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:04:28,104 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:04:28,104 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-06 19:04:28,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:04:28,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1147573545, now seen corresponding path program 1 times [2021-11-06 19:04:28,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:04:28,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647035559] [2021-11-06 19:04:28,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:04:28,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:04:28,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:04:28,754 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 19:04:28,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:04:28,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647035559] [2021-11-06 19:04:28,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647035559] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:04:28,755 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:04:28,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:04:28,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977389587] [2021-11-06 19:04:28,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:04:28,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:04:28,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:04:28,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:04:28,787 INFO L87 Difference]: Start difference. First operand has 4676 states, 4589 states have (on average 1.2933100893440836) internal successors, (5935), 4675 states have internal predecessors, (5935), 0 states have call successors, (0), 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 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 19:04:31,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:04:31,214 INFO L93 Difference]: Finished difference Result 13536 states and 17176 transitions. [2021-11-06 19:04:31,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:04:31,215 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2021-11-06 19:04:31,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:04:31,260 INFO L225 Difference]: With dead ends: 13536 [2021-11-06 19:04:31,260 INFO L226 Difference]: Without dead ends: 8707 [2021-11-06 19:04:31,276 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 19:04:31,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8707 states. [2021-11-06 19:04:31,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8707 to 8593. [2021-11-06 19:04:31,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8593 states, 8506 states have (on average 1.233599811897484) internal successors, (10493), 8592 states have internal predecessors, (10493), 0 states have call successors, (0), 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 19:04:31,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8593 states to 8593 states and 10493 transitions. [2021-11-06 19:04:31,501 INFO L78 Accepts]: Start accepts. Automaton has 8593 states and 10493 transitions. Word has length 63 [2021-11-06 19:04:31,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:04:31,503 INFO L470 AbstractCegarLoop]: Abstraction has 8593 states and 10493 transitions. [2021-11-06 19:04:31,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 19:04:31,503 INFO L276 IsEmpty]: Start isEmpty. Operand 8593 states and 10493 transitions. [2021-11-06 19:04:31,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-06 19:04:31,509 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:04:31,509 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:04:31,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 19:04:31,510 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-06 19:04:31,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:04:31,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1890311088, now seen corresponding path program 1 times [2021-11-06 19:04:31,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:04:31,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741070799] [2021-11-06 19:04:31,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:04:31,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:04:31,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:04:31,773 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 19:04:31,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:04:31,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741070799] [2021-11-06 19:04:31,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741070799] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:04:31,774 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:04:31,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:04:31,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722575043] [2021-11-06 19:04:31,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:04:31,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:04:31,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:04:31,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:04:31,779 INFO L87 Difference]: Start difference. First operand 8593 states and 10493 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:34,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:04:34,467 INFO L93 Difference]: Finished difference Result 24219 states and 29541 transitions. [2021-11-06 19:04:34,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:04:34,467 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-06 19:04:34,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:04:34,518 INFO L225 Difference]: With dead ends: 24219 [2021-11-06 19:04:34,518 INFO L226 Difference]: Without dead ends: 15758 [2021-11-06 19:04:34,535 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 19:04:34,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15758 states. [2021-11-06 19:04:34,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15758 to 15076. [2021-11-06 19:04:34,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15076 states, 14989 states have (on average 1.2341717259323504) internal successors, (18499), 15075 states have internal predecessors, (18499), 0 states have call successors, (0), 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 19:04:34,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15076 states to 15076 states and 18499 transitions. [2021-11-06 19:04:34,841 INFO L78 Accepts]: Start accepts. Automaton has 15076 states and 18499 transitions. Word has length 66 [2021-11-06 19:04:34,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:04:34,842 INFO L470 AbstractCegarLoop]: Abstraction has 15076 states and 18499 transitions. [2021-11-06 19:04:34,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:34,843 INFO L276 IsEmpty]: Start isEmpty. Operand 15076 states and 18499 transitions. [2021-11-06 19:04:34,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-06 19:04:34,844 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:04:34,844 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:04:34,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 19:04:34,849 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-06 19:04:34,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:04:34,850 INFO L85 PathProgramCache]: Analyzing trace with hash 732124952, now seen corresponding path program 1 times [2021-11-06 19:04:34,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:04:34,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399022212] [2021-11-06 19:04:34,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:04:34,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:04:34,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:04:35,071 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 19:04:35,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:04:35,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399022212] [2021-11-06 19:04:35,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399022212] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:04:35,072 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:04:35,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:04:35,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194200112] [2021-11-06 19:04:35,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:04:35,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:04:35,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:04:35,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:04:35,074 INFO L87 Difference]: Start difference. First operand 15076 states and 18499 transitions. Second operand has 3 states, 3 states have (on average 23.0) 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 19:04:37,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:04:37,906 INFO L93 Difference]: Finished difference Result 37618 states and 46152 transitions. [2021-11-06 19:04:37,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:04:37,906 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) 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 69 [2021-11-06 19:04:37,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:04:37,989 INFO L225 Difference]: With dead ends: 37618 [2021-11-06 19:04:37,989 INFO L226 Difference]: Without dead ends: 22674 [2021-11-06 19:04:38,016 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 19:04:38,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22674 states. [2021-11-06 19:04:38,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22674 to 21970. [2021-11-06 19:04:38,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21970 states, 21883 states have (on average 1.2333318100808848) internal successors, (26989), 21969 states have internal predecessors, (26989), 0 states have call successors, (0), 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 19:04:38,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21970 states to 21970 states and 26989 transitions. [2021-11-06 19:04:38,434 INFO L78 Accepts]: Start accepts. Automaton has 21970 states and 26989 transitions. Word has length 69 [2021-11-06 19:04:38,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:04:38,434 INFO L470 AbstractCegarLoop]: Abstraction has 21970 states and 26989 transitions. [2021-11-06 19:04:38,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) 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 19:04:38,435 INFO L276 IsEmpty]: Start isEmpty. Operand 21970 states and 26989 transitions. [2021-11-06 19:04:38,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-06 19:04:38,437 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:04:38,437 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:04:38,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 19:04:38,438 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr75ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-06 19:04:38,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:04:38,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1946669987, now seen corresponding path program 1 times [2021-11-06 19:04:38,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:04:38,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331037497] [2021-11-06 19:04:38,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:04:38,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:04:38,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:04:38,763 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 19:04:38,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:04:38,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331037497] [2021-11-06 19:04:38,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331037497] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:04:38,766 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:04:38,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:04:38,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768338848] [2021-11-06 19:04:38,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:04:38,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:04:38,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:04:38,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:04:38,768 INFO L87 Difference]: Start difference. First operand 21970 states and 26989 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 19:04:41,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:04:41,609 INFO L93 Difference]: Finished difference Result 37340 states and 45885 transitions. [2021-11-06 19:04:41,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:04:41,610 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 19:04:41,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:04:41,636 INFO L225 Difference]: With dead ends: 37340 [2021-11-06 19:04:41,636 INFO L226 Difference]: Without dead ends: 15502 [2021-11-06 19:04:41,664 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 19:04:41,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15502 states. [2021-11-06 19:04:41,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15502 to 15342. [2021-11-06 19:04:41,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15342 states, 15255 states have (on average 1.235136020976729) internal successors, (18842), 15341 states have internal predecessors, (18842), 0 states have call successors, (0), 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 19:04:41,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15342 states to 15342 states and 18842 transitions. [2021-11-06 19:04:41,910 INFO L78 Accepts]: Start accepts. Automaton has 15342 states and 18842 transitions. Word has length 70 [2021-11-06 19:04:41,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:04:41,910 INFO L470 AbstractCegarLoop]: Abstraction has 15342 states and 18842 transitions. [2021-11-06 19:04:41,911 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 19:04:41,911 INFO L276 IsEmpty]: Start isEmpty. Operand 15342 states and 18842 transitions. [2021-11-06 19:04:41,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-06 19:04:41,911 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:04:41,912 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, 1, 1, 1, 1] [2021-11-06 19:04:41,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 19:04:41,912 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-06 19:04:41,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:04:41,913 INFO L85 PathProgramCache]: Analyzing trace with hash 37324820, now seen corresponding path program 1 times [2021-11-06 19:04:41,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:04:41,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039859990] [2021-11-06 19:04:41,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:04:41,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:04:42,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:04:42,125 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 19:04:42,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:04:42,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039859990] [2021-11-06 19:04:42,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039859990] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:04:42,125 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:04:42,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:04:42,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012881756] [2021-11-06 19:04:42,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:04:42,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:04:42,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:04:42,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:04:42,126 INFO L87 Difference]: Start difference. First operand 15342 states and 18842 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 19:04:44,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:04:44,547 INFO L93 Difference]: Finished difference Result 45376 states and 55808 transitions. [2021-11-06 19:04:44,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:04:44,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-06 19:04:44,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:04:44,605 INFO L225 Difference]: With dead ends: 45376 [2021-11-06 19:04:44,605 INFO L226 Difference]: Without dead ends: 30204 [2021-11-06 19:04:44,636 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 19:04:44,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30204 states. [2021-11-06 19:04:45,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30204 to 30076. [2021-11-06 19:04:45,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30076 states, 29989 states have (on average 1.2363199839941312) internal successors, (37076), 30075 states have internal predecessors, (37076), 0 states have call successors, (0), 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 19:04:45,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30076 states to 30076 states and 37076 transitions. [2021-11-06 19:04:45,240 INFO L78 Accepts]: Start accepts. Automaton has 30076 states and 37076 transitions. Word has length 88 [2021-11-06 19:04:45,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:04:45,242 INFO L470 AbstractCegarLoop]: Abstraction has 30076 states and 37076 transitions. [2021-11-06 19:04:45,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 19:04:45,245 INFO L276 IsEmpty]: Start isEmpty. Operand 30076 states and 37076 transitions. [2021-11-06 19:04:45,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-06 19:04:45,250 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:04:45,250 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, 1, 1, 1, 1] [2021-11-06 19:04:45,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 19:04:45,251 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-06 19:04:45,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:04:45,251 INFO L85 PathProgramCache]: Analyzing trace with hash 295490258, now seen corresponding path program 1 times [2021-11-06 19:04:45,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:04:45,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243752625] [2021-11-06 19:04:45,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:04:45,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:04:45,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:04:45,570 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 19:04:45,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:04:45,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243752625] [2021-11-06 19:04:45,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243752625] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:04:45,571 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:04:45,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:04:45,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460602935] [2021-11-06 19:04:45,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:04:45,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:04:45,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:04:45,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:04:45,572 INFO L87 Difference]: Start difference. First operand 30076 states and 37076 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:46,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:04:46,187 INFO L93 Difference]: Finished difference Result 30076 states and 37076 transitions. [2021-11-06 19:04:46,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:04:46,188 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-06 19:04:46,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:04:46,242 INFO L225 Difference]: With dead ends: 30076 [2021-11-06 19:04:46,242 INFO L226 Difference]: Without dead ends: 30072 [2021-11-06 19:04:46,255 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 19:04:46,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30072 states. [2021-11-06 19:04:46,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30072 to 30072. [2021-11-06 19:04:46,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30072 states, 29987 states have (on average 1.2362690499216327) internal successors, (37072), 30071 states have internal predecessors, (37072), 0 states have call successors, (0), 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 19:04:47,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30072 states to 30072 states and 37072 transitions. [2021-11-06 19:04:47,022 INFO L78 Accepts]: Start accepts. Automaton has 30072 states and 37072 transitions. Word has length 88 [2021-11-06 19:04:47,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:04:47,023 INFO L470 AbstractCegarLoop]: Abstraction has 30072 states and 37072 transitions. [2021-11-06 19:04:47,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:47,023 INFO L276 IsEmpty]: Start isEmpty. Operand 30072 states and 37072 transitions. [2021-11-06 19:04:47,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-06 19:04:47,024 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:04:47,024 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, 1, 1, 1, 1, 1, 1] [2021-11-06 19:04:47,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 19:04:47,024 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-06 19:04:47,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:04:47,025 INFO L85 PathProgramCache]: Analyzing trace with hash 498443381, now seen corresponding path program 1 times [2021-11-06 19:04:47,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:04:47,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207179653] [2021-11-06 19:04:47,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:04:47,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:04:47,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:04:47,281 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 19:04:47,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:04:47,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207179653] [2021-11-06 19:04:47,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207179653] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:04:47,282 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:04:47,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:04:47,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411277679] [2021-11-06 19:04:47,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:04:47,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:04:47,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:04:47,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:04:47,283 INFO L87 Difference]: Start difference. First operand 30072 states and 37072 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:47,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:04:47,909 INFO L93 Difference]: Finished difference Result 30072 states and 37072 transitions. [2021-11-06 19:04:47,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:04:47,910 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-06 19:04:47,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:04:47,961 INFO L225 Difference]: With dead ends: 30072 [2021-11-06 19:04:47,961 INFO L226 Difference]: Without dead ends: 30068 [2021-11-06 19:04:47,974 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 19:04:47,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30068 states. [2021-11-06 19:04:48,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30068 to 30068. [2021-11-06 19:04:48,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30068 states, 29985 states have (on average 1.2362181090545272) internal successors, (37068), 30067 states have internal predecessors, (37068), 0 states have call successors, (0), 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 19:04:48,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30068 states to 30068 states and 37068 transitions. [2021-11-06 19:04:48,661 INFO L78 Accepts]: Start accepts. Automaton has 30068 states and 37068 transitions. Word has length 90 [2021-11-06 19:04:48,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:04:48,661 INFO L470 AbstractCegarLoop]: Abstraction has 30068 states and 37068 transitions. [2021-11-06 19:04:48,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:48,662 INFO L276 IsEmpty]: Start isEmpty. Operand 30068 states and 37068 transitions. [2021-11-06 19:04:48,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-06 19:04:48,667 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:04:48,667 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:04:48,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 19:04:48,667 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-06 19:04:48,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:04:48,668 INFO L85 PathProgramCache]: Analyzing trace with hash -2032100712, now seen corresponding path program 1 times [2021-11-06 19:04:48,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:04:48,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874130541] [2021-11-06 19:04:48,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:04:48,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:04:48,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:04:48,914 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 19:04:48,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:04:48,914 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874130541] [2021-11-06 19:04:48,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874130541] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:04:48,915 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:04:48,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:04:48,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167272949] [2021-11-06 19:04:48,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:04:48,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:04:48,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:04:48,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:04:48,916 INFO L87 Difference]: Start difference. First operand 30068 states and 37068 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:49,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:04:49,569 INFO L93 Difference]: Finished difference Result 30068 states and 37068 transitions. [2021-11-06 19:04:49,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:04:49,569 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-11-06 19:04:49,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:04:49,624 INFO L225 Difference]: With dead ends: 30068 [2021-11-06 19:04:49,624 INFO L226 Difference]: Without dead ends: 30064 [2021-11-06 19:04:49,638 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 19:04:49,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30064 states. [2021-11-06 19:04:50,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30064 to 30064. [2021-11-06 19:04:50,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30064 states, 29983 states have (on average 1.236167161391455) internal successors, (37064), 30063 states have internal predecessors, (37064), 0 states have call successors, (0), 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 19:04:50,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30064 states to 30064 states and 37064 transitions. [2021-11-06 19:04:50,369 INFO L78 Accepts]: Start accepts. Automaton has 30064 states and 37064 transitions. Word has length 92 [2021-11-06 19:04:50,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:04:50,370 INFO L470 AbstractCegarLoop]: Abstraction has 30064 states and 37064 transitions. [2021-11-06 19:04:50,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:50,370 INFO L276 IsEmpty]: Start isEmpty. Operand 30064 states and 37064 transitions. [2021-11-06 19:04:50,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-06 19:04:50,371 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:04:50,371 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:04:50,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 19:04:50,371 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-06 19:04:50,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:04:50,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1361483067, now seen corresponding path program 1 times [2021-11-06 19:04:50,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:04:50,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634557004] [2021-11-06 19:04:50,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:04:50,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:04:50,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:04:50,624 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 19:04:50,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:04:50,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634557004] [2021-11-06 19:04:50,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634557004] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:04:50,625 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:04:50,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:04:50,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083663835] [2021-11-06 19:04:50,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:04:50,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:04:50,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:04:50,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:04:50,626 INFO L87 Difference]: Start difference. First operand 30064 states and 37064 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:51,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:04:51,470 INFO L93 Difference]: Finished difference Result 30064 states and 37064 transitions. [2021-11-06 19:04:51,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:04:51,470 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-06 19:04:51,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:04:51,517 INFO L225 Difference]: With dead ends: 30064 [2021-11-06 19:04:51,517 INFO L226 Difference]: Without dead ends: 30060 [2021-11-06 19:04:51,526 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 19:04:51,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30060 states. [2021-11-06 19:04:52,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30060 to 30060. [2021-11-06 19:04:52,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30060 states, 29981 states have (on average 1.2361162069310563) internal successors, (37060), 30059 states have internal predecessors, (37060), 0 states have call successors, (0), 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 19:04:52,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30060 states to 30060 states and 37060 transitions. [2021-11-06 19:04:52,136 INFO L78 Accepts]: Start accepts. Automaton has 30060 states and 37060 transitions. Word has length 94 [2021-11-06 19:04:52,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:04:52,136 INFO L470 AbstractCegarLoop]: Abstraction has 30060 states and 37060 transitions. [2021-11-06 19:04:52,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:52,137 INFO L276 IsEmpty]: Start isEmpty. Operand 30060 states and 37060 transitions. [2021-11-06 19:04:52,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-06 19:04:52,138 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:04:52,138 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:04:52,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 19:04:52,138 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-06 19:04:52,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:04:52,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1579649954, now seen corresponding path program 1 times [2021-11-06 19:04:52,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:04:52,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641173717] [2021-11-06 19:04:52,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:04:52,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:04:52,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:04:52,361 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 19:04:52,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:04:52,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641173717] [2021-11-06 19:04:52,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641173717] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:04:52,362 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:04:52,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:04:52,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9440067] [2021-11-06 19:04:52,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:04:52,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:04:52,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:04:52,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:04:52,363 INFO L87 Difference]: Start difference. First operand 30060 states and 37060 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:53,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:04:53,240 INFO L93 Difference]: Finished difference Result 30060 states and 37060 transitions. [2021-11-06 19:04:53,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:04:53,241 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-06 19:04:53,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:04:53,282 INFO L225 Difference]: With dead ends: 30060 [2021-11-06 19:04:53,283 INFO L226 Difference]: Without dead ends: 30056 [2021-11-06 19:04:53,294 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 19:04:53,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30056 states. [2021-11-06 19:04:53,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30056 to 30056. [2021-11-06 19:04:53,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30056 states, 29979 states have (on average 1.2360652456719703) internal successors, (37056), 30055 states have internal predecessors, (37056), 0 states have call successors, (0), 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 19:04:53,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30056 states to 30056 states and 37056 transitions. [2021-11-06 19:04:53,981 INFO L78 Accepts]: Start accepts. Automaton has 30056 states and 37056 transitions. Word has length 96 [2021-11-06 19:04:53,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:04:53,982 INFO L470 AbstractCegarLoop]: Abstraction has 30056 states and 37056 transitions. [2021-11-06 19:04:53,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:53,982 INFO L276 IsEmpty]: Start isEmpty. Operand 30056 states and 37056 transitions. [2021-11-06 19:04:53,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-06 19:04:53,983 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:04:53,983 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:04:53,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 19:04:53,983 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-06 19:04:53,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:04:53,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1920002047, now seen corresponding path program 1 times [2021-11-06 19:04:53,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:04:53,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792143806] [2021-11-06 19:04:53,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:04:53,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:04:54,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:04:54,210 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 19:04:54,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:04:54,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792143806] [2021-11-06 19:04:54,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792143806] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:04:54,211 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:04:54,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:04:54,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771824147] [2021-11-06 19:04:54,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:04:54,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:04:54,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:04:54,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:04:54,212 INFO L87 Difference]: Start difference. First operand 30056 states and 37056 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:55,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:04:55,083 INFO L93 Difference]: Finished difference Result 30056 states and 37056 transitions. [2021-11-06 19:04:55,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:04:55,084 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-06 19:04:55,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:04:55,128 INFO L225 Difference]: With dead ends: 30056 [2021-11-06 19:04:55,128 INFO L226 Difference]: Without dead ends: 30052 [2021-11-06 19:04:55,141 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 19:04:55,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30052 states. [2021-11-06 19:04:55,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30052 to 30052. [2021-11-06 19:04:55,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30052 states, 29977 states have (on average 1.2360142776128364) internal successors, (37052), 30051 states have internal predecessors, (37052), 0 states have call successors, (0), 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 19:04:55,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30052 states to 30052 states and 37052 transitions. [2021-11-06 19:04:55,835 INFO L78 Accepts]: Start accepts. Automaton has 30052 states and 37052 transitions. Word has length 98 [2021-11-06 19:04:55,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:04:55,836 INFO L470 AbstractCegarLoop]: Abstraction has 30052 states and 37052 transitions. [2021-11-06 19:04:55,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:55,836 INFO L276 IsEmpty]: Start isEmpty. Operand 30052 states and 37052 transitions. [2021-11-06 19:04:55,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-06 19:04:55,837 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:04:55,837 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:04:55,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 19:04:55,837 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr75ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-06 19:04:55,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:04:55,838 INFO L85 PathProgramCache]: Analyzing trace with hash -873464710, now seen corresponding path program 1 times [2021-11-06 19:04:55,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:04:55,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456211156] [2021-11-06 19:04:55,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:04:55,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:04:55,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:04:56,055 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 19:04:56,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:04:56,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456211156] [2021-11-06 19:04:56,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456211156] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:04:56,055 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:04:56,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:04:56,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296931822] [2021-11-06 19:04:56,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:04:56,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:04:56,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:04:56,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:04:56,056 INFO L87 Difference]: Start difference. First operand 30052 states and 37052 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 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 19:04:59,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:04:59,634 INFO L93 Difference]: Finished difference Result 68166 states and 84215 transitions. [2021-11-06 19:04:59,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:04:59,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-06 19:04:59,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:04:59,704 INFO L225 Difference]: With dead ends: 68166 [2021-11-06 19:04:59,705 INFO L226 Difference]: Without dead ends: 38284 [2021-11-06 19:04:59,753 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 19:04:59,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38284 states. [2021-11-06 19:05:00,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38284 to 38134. [2021-11-06 19:05:00,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38134 states, 38059 states have (on average 1.2382879213852176) internal successors, (47128), 38133 states have internal predecessors, (47128), 0 states have call successors, (0), 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 19:05:00,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38134 states to 38134 states and 47128 transitions. [2021-11-06 19:05:00,879 INFO L78 Accepts]: Start accepts. Automaton has 38134 states and 47128 transitions. Word has length 98 [2021-11-06 19:05:00,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:05:00,879 INFO L470 AbstractCegarLoop]: Abstraction has 38134 states and 47128 transitions. [2021-11-06 19:05:00,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 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 19:05:00,880 INFO L276 IsEmpty]: Start isEmpty. Operand 38134 states and 47128 transitions. [2021-11-06 19:05:00,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-06 19:05:00,881 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:05:00,881 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:05:00,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-06 19:05:00,881 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-06 19:05:00,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:05:00,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1714118692, now seen corresponding path program 1 times [2021-11-06 19:05:00,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:05:00,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135908238] [2021-11-06 19:05:00,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:05:00,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:05:00,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:05:01,136 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 19:05:01,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:05:01,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135908238] [2021-11-06 19:05:01,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135908238] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:05:01,137 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:05:01,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:05:01,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952933420] [2021-11-06 19:05:01,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:05:01,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:05:01,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:05:01,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:05:01,138 INFO L87 Difference]: Start difference. First operand 38134 states and 47128 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:05:03,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:05:03,051 INFO L93 Difference]: Finished difference Result 38134 states and 47128 transitions. [2021-11-06 19:05:03,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:05:03,052 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-11-06 19:05:03,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:05:03,111 INFO L225 Difference]: With dead ends: 38134 [2021-11-06 19:05:03,112 INFO L226 Difference]: Without dead ends: 38130 [2021-11-06 19:05:03,126 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 19:05:03,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38130 states. [2021-11-06 19:05:04,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38130 to 38130. [2021-11-06 19:05:04,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38130 states, 38057 states have (on average 1.2382478913209134) internal successors, (47124), 38129 states have internal predecessors, (47124), 0 states have call successors, (0), 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 19:05:04,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38130 states to 38130 states and 47124 transitions. [2021-11-06 19:05:04,245 INFO L78 Accepts]: Start accepts. Automaton has 38130 states and 47124 transitions. Word has length 100 [2021-11-06 19:05:04,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:05:04,245 INFO L470 AbstractCegarLoop]: Abstraction has 38130 states and 47124 transitions. [2021-11-06 19:05:04,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:05:04,245 INFO L276 IsEmpty]: Start isEmpty. Operand 38130 states and 47124 transitions. [2021-11-06 19:05:04,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-06 19:05:04,246 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:05:04,247 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:05:04,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-06 19:05:04,247 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-06 19:05:04,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:05:04,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1999229753, now seen corresponding path program 1 times [2021-11-06 19:05:04,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:05:04,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305470687] [2021-11-06 19:05:04,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:05:04,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:05:04,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:05:04,483 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 19:05:04,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:05:04,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305470687] [2021-11-06 19:05:04,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305470687] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:05:04,484 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:05:04,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:05:04,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631436779] [2021-11-06 19:05:04,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:05:04,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:05:04,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:05:04,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:05:04,485 INFO L87 Difference]: Start difference. First operand 38130 states and 47124 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:05:05,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:05:05,592 INFO L93 Difference]: Finished difference Result 38130 states and 47124 transitions. [2021-11-06 19:05:05,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:05:05,593 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2021-11-06 19:05:05,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:05:05,649 INFO L225 Difference]: With dead ends: 38130 [2021-11-06 19:05:05,649 INFO L226 Difference]: Without dead ends: 38126 [2021-11-06 19:05:05,663 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 19:05:05,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38126 states. [2021-11-06 19:05:06,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38126 to 38126. [2021-11-06 19:05:07,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38126 states, 38055 states have (on average 1.238207857049008) internal successors, (47120), 38125 states have internal predecessors, (47120), 0 states have call successors, (0), 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 19:05:07,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38126 states to 38126 states and 47120 transitions. [2021-11-06 19:05:07,101 INFO L78 Accepts]: Start accepts. Automaton has 38126 states and 47120 transitions. Word has length 102 [2021-11-06 19:05:07,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:05:07,102 INFO L470 AbstractCegarLoop]: Abstraction has 38126 states and 47120 transitions. [2021-11-06 19:05:07,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:05:07,102 INFO L276 IsEmpty]: Start isEmpty. Operand 38126 states and 47120 transitions. [2021-11-06 19:05:07,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-06 19:05:07,103 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:05:07,103 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:05:07,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-06 19:05:07,103 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-06 19:05:07,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:05:07,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1409262102, now seen corresponding path program 1 times [2021-11-06 19:05:07,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:05:07,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980983404] [2021-11-06 19:05:07,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:05:07,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:05:07,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:05:07,363 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 19:05:07,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:05:07,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980983404] [2021-11-06 19:05:07,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980983404] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:05:07,364 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:05:07,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:05:07,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710848115] [2021-11-06 19:05:07,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:05:07,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:05:07,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:05:07,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:05:07,365 INFO L87 Difference]: Start difference. First operand 38126 states and 47120 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:05:08,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:05:08,613 INFO L93 Difference]: Finished difference Result 38126 states and 47120 transitions. [2021-11-06 19:05:08,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:05:08,614 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-11-06 19:05:08,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:05:08,667 INFO L225 Difference]: With dead ends: 38126 [2021-11-06 19:05:08,667 INFO L226 Difference]: Without dead ends: 38122 [2021-11-06 19:05:08,679 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 19:05:08,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38122 states. [2021-11-06 19:05:09,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38122 to 38122. [2021-11-06 19:05:09,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38122 states, 38053 states have (on average 1.2381678185688383) internal successors, (47116), 38121 states have internal predecessors, (47116), 0 states have call successors, (0), 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 19:05:10,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38122 states to 38122 states and 47116 transitions. [2021-11-06 19:05:10,013 INFO L78 Accepts]: Start accepts. Automaton has 38122 states and 47116 transitions. Word has length 104 [2021-11-06 19:05:10,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:05:10,014 INFO L470 AbstractCegarLoop]: Abstraction has 38122 states and 47116 transitions. [2021-11-06 19:05:10,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:05:10,014 INFO L276 IsEmpty]: Start isEmpty. Operand 38122 states and 47116 transitions. [2021-11-06 19:05:10,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-06 19:05:10,015 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:05:10,015 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, 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 19:05:10,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-06 19:05:10,015 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-06 19:05:10,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:05:10,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1386032243, now seen corresponding path program 1 times [2021-11-06 19:05:10,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:05:10,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709745952] [2021-11-06 19:05:10,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:05:10,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:05:10,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:05:10,284 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 19:05:10,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:05:10,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709745952] [2021-11-06 19:05:10,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709745952] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:05:10,284 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:05:10,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:05:10,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647802856] [2021-11-06 19:05:10,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:05:10,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:05:10,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:05:10,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:05:10,285 INFO L87 Difference]: Start difference. First operand 38122 states and 47116 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:05:11,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:05:11,606 INFO L93 Difference]: Finished difference Result 38122 states and 47116 transitions. [2021-11-06 19:05:11,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:05:11,606 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-06 19:05:11,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:05:11,666 INFO L225 Difference]: With dead ends: 38122 [2021-11-06 19:05:11,666 INFO L226 Difference]: Without dead ends: 38118 [2021-11-06 19:05:11,680 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 19:05:11,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38118 states. [2021-11-06 19:05:12,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38118 to 38118. [2021-11-06 19:05:12,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38118 states, 38051 states have (on average 1.2381277758797404) internal successors, (47112), 38117 states have internal predecessors, (47112), 0 states have call successors, (0), 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 19:05:12,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38118 states to 38118 states and 47112 transitions. [2021-11-06 19:05:12,920 INFO L78 Accepts]: Start accepts. Automaton has 38118 states and 47112 transitions. Word has length 106 [2021-11-06 19:05:12,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:05:12,920 INFO L470 AbstractCegarLoop]: Abstraction has 38118 states and 47112 transitions. [2021-11-06 19:05:12,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:05:12,921 INFO L276 IsEmpty]: Start isEmpty. Operand 38118 states and 47112 transitions. [2021-11-06 19:05:12,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-06 19:05:12,922 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:05:12,922 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, 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 19:05:12,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-06 19:05:12,922 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-06 19:05:12,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:05:12,922 INFO L85 PathProgramCache]: Analyzing trace with hash -536973904, now seen corresponding path program 1 times [2021-11-06 19:05:12,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:05:12,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253671842] [2021-11-06 19:05:12,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:05:12,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:05:13,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:05:13,337 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 19:05:13,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:05:13,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253671842] [2021-11-06 19:05:13,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253671842] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:05:13,338 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:05:13,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:05:13,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968758541] [2021-11-06 19:05:13,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:05:13,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:05:13,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:05:13,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:05:13,339 INFO L87 Difference]: Start difference. First operand 38118 states and 47112 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 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 19:05:14,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:05:14,826 INFO L93 Difference]: Finished difference Result 38118 states and 47112 transitions. [2021-11-06 19:05:14,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:05:14,827 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-06 19:05:14,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:05:14,887 INFO L225 Difference]: With dead ends: 38118 [2021-11-06 19:05:14,887 INFO L226 Difference]: Without dead ends: 38114 [2021-11-06 19:05:14,902 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 19:05:14,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38114 states. [2021-11-06 19:05:16,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38114 to 38114. [2021-11-06 19:05:16,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38114 states, 38049 states have (on average 1.2380877289810508) internal successors, (47108), 38113 states have internal predecessors, (47108), 0 states have call successors, (0), 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 19:05:16,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38114 states to 38114 states and 47108 transitions. [2021-11-06 19:05:16,229 INFO L78 Accepts]: Start accepts. Automaton has 38114 states and 47108 transitions. Word has length 108 [2021-11-06 19:05:16,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:05:16,229 INFO L470 AbstractCegarLoop]: Abstraction has 38114 states and 47108 transitions. [2021-11-06 19:05:16,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 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 19:05:16,230 INFO L276 IsEmpty]: Start isEmpty. Operand 38114 states and 47108 transitions. [2021-11-06 19:05:16,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-06 19:05:16,231 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:05:16,231 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, 1, 1, 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 19:05:16,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-06 19:05:16,231 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-06 19:05:16,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:05:16,232 INFO L85 PathProgramCache]: Analyzing trace with hash -635696045, now seen corresponding path program 1 times [2021-11-06 19:05:16,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:05:16,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678225425] [2021-11-06 19:05:16,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:05:16,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:05:16,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:05:16,464 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 19:05:16,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:05:16,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678225425] [2021-11-06 19:05:16,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678225425] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:05:16,464 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:05:16,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:05:16,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539087945] [2021-11-06 19:05:16,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:05:16,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:05:16,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:05:16,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:05:16,465 INFO L87 Difference]: Start difference. First operand 38114 states and 47108 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 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 19:05:17,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:05:17,839 INFO L93 Difference]: Finished difference Result 38114 states and 47108 transitions. [2021-11-06 19:05:17,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:05:17,840 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 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 110 [2021-11-06 19:05:17,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:05:17,893 INFO L225 Difference]: With dead ends: 38114 [2021-11-06 19:05:17,893 INFO L226 Difference]: Without dead ends: 38110 [2021-11-06 19:05:17,905 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 19:05:17,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38110 states. [2021-11-06 19:05:19,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38110 to 38110. [2021-11-06 19:05:19,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38110 states, 38047 states have (on average 1.2380476778721055) internal successors, (47104), 38109 states have internal predecessors, (47104), 0 states have call successors, (0), 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 19:05:19,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38110 states to 38110 states and 47104 transitions. [2021-11-06 19:05:19,602 INFO L78 Accepts]: Start accepts. Automaton has 38110 states and 47104 transitions. Word has length 110 [2021-11-06 19:05:19,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:05:19,602 INFO L470 AbstractCegarLoop]: Abstraction has 38110 states and 47104 transitions. [2021-11-06 19:05:19,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 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 19:05:19,602 INFO L276 IsEmpty]: Start isEmpty. Operand 38110 states and 47104 transitions. [2021-11-06 19:05:19,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-06 19:05:19,603 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:05:19,603 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, 1, 1, 1, 1, 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 19:05:19,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-06 19:05:19,604 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-06 19:05:19,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:05:19,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1018392714, now seen corresponding path program 1 times [2021-11-06 19:05:19,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:05:19,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260388094] [2021-11-06 19:05:19,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:05:19,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:05:19,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:05:19,849 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 19:05:19,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:05:19,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260388094] [2021-11-06 19:05:19,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260388094] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:05:19,849 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:05:19,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:05:19,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103411620] [2021-11-06 19:05:19,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:05:19,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:05:19,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:05:19,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:05:19,850 INFO L87 Difference]: Start difference. First operand 38110 states and 47104 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 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 19:05:21,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:05:21,241 INFO L93 Difference]: Finished difference Result 38110 states and 47104 transitions. [2021-11-06 19:05:21,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:05:21,241 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 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 112 [2021-11-06 19:05:21,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:05:21,313 INFO L225 Difference]: With dead ends: 38110 [2021-11-06 19:05:21,313 INFO L226 Difference]: Without dead ends: 38106 [2021-11-06 19:05:21,333 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 19:05:21,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38106 states.