./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem17_label14.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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/eca-rers2012/Problem17_label14.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-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 32bit --witnessprinter.graph.data.programhash 0ac429ca8e99b6512d8aadb8f8e502aadaca92db9137fa23838c552f61d5f382 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 05:01:14,713 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 05:01:14,715 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 05:01:14,755 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 05:01:14,755 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 05:01:14,757 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 05:01:14,758 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 05:01:14,761 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 05:01:14,762 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 05:01:14,765 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 05:01:14,766 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 05:01:14,767 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 05:01:14,767 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 05:01:14,769 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 05:01:14,770 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 05:01:14,772 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 05:01:14,773 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 05:01:14,774 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 05:01:14,776 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 05:01:14,780 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 05:01:14,781 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 05:01:14,782 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 05:01:14,783 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 05:01:14,784 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 05:01:14,787 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 05:01:14,787 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 05:01:14,787 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 05:01:14,788 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 05:01:14,789 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 05:01:14,789 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 05:01:14,789 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 05:01:14,790 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 05:01:14,791 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 05:01:14,792 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 05:01:14,793 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 05:01:14,793 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 05:01:14,794 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 05:01:14,794 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 05:01:14,794 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 05:01:14,794 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 05:01:14,795 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 05:01:14,797 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 05:01:14,823 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 05:01:14,823 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 05:01:14,823 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 05:01:14,824 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 05:01:14,824 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 05:01:14,824 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 05:01:14,825 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 05:01:14,825 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 05:01:14,825 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 05:01:14,825 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 05:01:14,826 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 05:01:14,826 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 05:01:14,826 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 05:01:14,827 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 05:01:14,827 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 05:01:14,827 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 05:01:14,827 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 05:01:14,827 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 05:01:14,827 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 05:01:14,828 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 05:01:14,828 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 05:01:14,828 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 05:01:14,828 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 05:01:14,828 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 05:01:14,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 05:01:14,829 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 05:01:14,829 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 05:01:14,830 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 05:01:14,830 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 05:01:14,830 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 05:01:14,830 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 05:01:14,830 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 05:01:14,831 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 05:01:14,831 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 05:01:14,831 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0ac429ca8e99b6512d8aadb8f8e502aadaca92db9137fa23838c552f61d5f382 [2021-12-17 05:01:14,991 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 05:01:15,008 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 05:01:15,010 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 05:01:15,011 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 05:01:15,012 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 05:01:15,013 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label14.c [2021-12-17 05:01:15,055 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cec522097/aec1ef93309740f19b9ab20916d11692/FLAG0e4eff543 [2021-12-17 05:01:15,595 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 05:01:15,596 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label14.c [2021-12-17 05:01:15,616 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cec522097/aec1ef93309740f19b9ab20916d11692/FLAG0e4eff543 [2021-12-17 05:01:16,088 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cec522097/aec1ef93309740f19b9ab20916d11692 [2021-12-17 05:01:16,090 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 05:01:16,092 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 05:01:16,094 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 05:01:16,094 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 05:01:16,096 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 05:01:16,097 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 05:01:16" (1/1) ... [2021-12-17 05:01:16,098 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2130535a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:01:16, skipping insertion in model container [2021-12-17 05:01:16,098 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 05:01:16" (1/1) ... [2021-12-17 05:01:16,103 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 05:01:16,158 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 05:01:16,437 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label14.c[6990,7003] [2021-12-17 05:01:16,877 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 05:01:16,885 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 05:01:16,913 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label14.c[6990,7003] [2021-12-17 05:01:17,125 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 05:01:17,141 INFO L208 MainTranslator]: Completed translation [2021-12-17 05:01:17,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:01:17 WrapperNode [2021-12-17 05:01:17,142 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 05:01:17,143 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 05:01:17,143 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 05:01:17,143 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 05:01:17,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:01:17" (1/1) ... [2021-12-17 05:01:17,202 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:01:17" (1/1) ... [2021-12-17 05:01:17,449 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2611 [2021-12-17 05:01:17,450 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 05:01:17,451 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 05:01:17,451 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 05:01:17,451 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 05:01:17,458 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:01:17" (1/1) ... [2021-12-17 05:01:17,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:01:17" (1/1) ... [2021-12-17 05:01:17,500 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:01:17" (1/1) ... [2021-12-17 05:01:17,501 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:01:17" (1/1) ... [2021-12-17 05:01:17,670 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:01:17" (1/1) ... [2021-12-17 05:01:17,685 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:01:17" (1/1) ... [2021-12-17 05:01:17,729 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:01:17" (1/1) ... [2021-12-17 05:01:17,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 05:01:17,791 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 05:01:17,792 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 05:01:17,792 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 05:01:17,793 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:01:17" (1/1) ... [2021-12-17 05:01:17,799 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 05:01:17,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 05:01:17,833 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) [2021-12-17 05:01:17,853 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 [2021-12-17 05:01:17,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 05:01:17,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 05:01:17,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 05:01:17,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 05:01:17,937 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 05:01:17,938 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 05:01:20,560 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 05:01:20,569 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 05:01:20,569 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-17 05:01:20,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 05:01:20 BoogieIcfgContainer [2021-12-17 05:01:20,571 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 05:01:20,573 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 05:01:20,573 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 05:01:20,578 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 05:01:20,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 05:01:16" (1/3) ... [2021-12-17 05:01:20,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d0e5d68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 05:01:20, skipping insertion in model container [2021-12-17 05:01:20,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:01:17" (2/3) ... [2021-12-17 05:01:20,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d0e5d68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 05:01:20, skipping insertion in model container [2021-12-17 05:01:20,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 05:01:20" (3/3) ... [2021-12-17 05:01:20,581 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label14.c [2021-12-17 05:01:20,585 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 05:01:20,585 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 05:01:20,632 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 05:01:20,639 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 [2021-12-17 05:01:20,639 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 05:01:20,665 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:01:20,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-17 05:01:20,673 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 05:01:20,674 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 05:01:20,674 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 05:01:20,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 05:01:20,678 INFO L85 PathProgramCache]: Analyzing trace with hash 433832817, now seen corresponding path program 1 times [2021-12-17 05:01:20,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 05:01:20,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624397369] [2021-12-17 05:01:20,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:01:20,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 05:01:20,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:01:20,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 05:01:20,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 05:01:20,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624397369] [2021-12-17 05:01:20,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624397369] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 05:01:20,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 05:01:20,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 05:01:20,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572365852] [2021-12-17 05:01:20,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 05:01:20,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 05:01:20,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 05:01:20,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 05:01:20,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 05:01:20,909 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:01:23,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 05:01:23,089 INFO L93 Difference]: Finished difference Result 1667 states and 3061 transitions. [2021-12-17 05:01:23,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 05:01:23,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2021-12-17 05:01:23,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 05:01:23,127 INFO L225 Difference]: With dead ends: 1667 [2021-12-17 05:01:23,129 INFO L226 Difference]: Without dead ends: 998 [2021-12-17 05:01:23,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 05:01:23,138 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 498 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1566 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 1962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 1566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-17 05:01:23,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [498 Valid, 276 Invalid, 1962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 1566 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-17 05:01:23,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2021-12-17 05:01:23,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 982. [2021-12-17 05:01:23,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 982 states, 981 states have (on average 1.707441386340469) internal successors, (1675), 981 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:01:23,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1675 transitions. [2021-12-17 05:01:23,220 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1675 transitions. Word has length 47 [2021-12-17 05:01:23,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 05:01:23,221 INFO L470 AbstractCegarLoop]: Abstraction has 982 states and 1675 transitions. [2021-12-17 05:01:23,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:01:23,222 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1675 transitions. [2021-12-17 05:01:23,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-17 05:01:23,229 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 05:01:23,230 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 05:01:23,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 05:01:23,231 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 05:01:23,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 05:01:23,232 INFO L85 PathProgramCache]: Analyzing trace with hash -2083214859, now seen corresponding path program 1 times [2021-12-17 05:01:23,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 05:01:23,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259775054] [2021-12-17 05:01:23,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:01:23,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 05:01:23,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:01:23,363 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 05:01:23,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 05:01:23,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259775054] [2021-12-17 05:01:23,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259775054] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 05:01:23,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 05:01:23,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 05:01:23,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526944657] [2021-12-17 05:01:23,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 05:01:23,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 05:01:23,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 05:01:23,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 05:01:23,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 05:01:23,368 INFO L87 Difference]: Start difference. First operand 982 states and 1675 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:01:24,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 05:01:24,946 INFO L93 Difference]: Finished difference Result 2841 states and 4881 transitions. [2021-12-17 05:01:24,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 05:01:24,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 0 states have call successors, (0), 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 [2021-12-17 05:01:24,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 05:01:24,952 INFO L225 Difference]: With dead ends: 2841 [2021-12-17 05:01:24,952 INFO L226 Difference]: Without dead ends: 1861 [2021-12-17 05:01:24,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 05:01:24,953 INFO L933 BasicCegarLoop]: 423 mSDtfsCounter, 407 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1340 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 1665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-17 05:01:24,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [407 Valid, 496 Invalid, 1665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1340 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-17 05:01:24,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1861 states. [2021-12-17 05:01:24,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1861 to 1857. [2021-12-17 05:01:24,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1857 states, 1856 states have (on average 1.4547413793103448) internal successors, (2700), 1856 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:01:24,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1857 states to 1857 states and 2700 transitions. [2021-12-17 05:01:24,977 INFO L78 Accepts]: Start accepts. Automaton has 1857 states and 2700 transitions. Word has length 112 [2021-12-17 05:01:24,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 05:01:24,979 INFO L470 AbstractCegarLoop]: Abstraction has 1857 states and 2700 transitions. [2021-12-17 05:01:24,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:01:24,980 INFO L276 IsEmpty]: Start isEmpty. Operand 1857 states and 2700 transitions. [2021-12-17 05:01:24,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-12-17 05:01:24,983 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 05:01:24,984 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 05:01:24,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 05:01:24,986 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 05:01:24,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 05:01:24,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1155338080, now seen corresponding path program 1 times [2021-12-17 05:01:24,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 05:01:24,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323848516] [2021-12-17 05:01:24,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:01:24,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 05:01:25,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:01:25,158 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 05:01:25,159 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 05:01:25,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323848516] [2021-12-17 05:01:25,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323848516] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 05:01:25,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 05:01:25,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 05:01:25,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267424986] [2021-12-17 05:01:25,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 05:01:25,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 05:01:25,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 05:01:25,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 05:01:25,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 05:01:25,164 INFO L87 Difference]: Start difference. First operand 1857 states and 2700 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:01:27,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 05:01:27,134 INFO L93 Difference]: Finished difference Result 4591 states and 6640 transitions. [2021-12-17 05:01:27,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 05:01:27,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2021-12-17 05:01:27,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 05:01:27,142 INFO L225 Difference]: With dead ends: 4591 [2021-12-17 05:01:27,142 INFO L226 Difference]: Without dead ends: 2736 [2021-12-17 05:01:27,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 05:01:27,145 INFO L933 BasicCegarLoop]: 475 mSDtfsCounter, 352 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1665 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 1763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-17 05:01:27,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [352 Valid, 537 Invalid, 1763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1665 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-17 05:01:27,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2736 states. [2021-12-17 05:01:27,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2736 to 2716. [2021-12-17 05:01:27,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2716 states, 2715 states have (on average 1.390791896869245) internal successors, (3776), 2715 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:01:27,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2716 states to 2716 states and 3776 transitions. [2021-12-17 05:01:27,175 INFO L78 Accepts]: Start accepts. Automaton has 2716 states and 3776 transitions. Word has length 152 [2021-12-17 05:01:27,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 05:01:27,176 INFO L470 AbstractCegarLoop]: Abstraction has 2716 states and 3776 transitions. [2021-12-17 05:01:27,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:01:27,176 INFO L276 IsEmpty]: Start isEmpty. Operand 2716 states and 3776 transitions. [2021-12-17 05:01:27,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-12-17 05:01:27,177 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 05:01:27,177 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 05:01:27,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 05:01:27,178 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 05:01:27,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 05:01:27,179 INFO L85 PathProgramCache]: Analyzing trace with hash -2121161297, now seen corresponding path program 1 times [2021-12-17 05:01:27,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 05:01:27,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432489271] [2021-12-17 05:01:27,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:01:27,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 05:01:27,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:01:27,337 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 05:01:27,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 05:01:27,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432489271] [2021-12-17 05:01:27,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432489271] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 05:01:27,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 05:01:27,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 05:01:27,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586270084] [2021-12-17 05:01:27,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 05:01:27,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 05:01:27,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 05:01:27,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 05:01:27,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-17 05:01:27,340 INFO L87 Difference]: Start difference. First operand 2716 states and 3776 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:01:29,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 05:01:29,336 INFO L93 Difference]: Finished difference Result 5012 states and 6951 transitions. [2021-12-17 05:01:29,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 05:01:29,337 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 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 158 [2021-12-17 05:01:29,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 05:01:29,344 INFO L225 Difference]: With dead ends: 5012 [2021-12-17 05:01:29,344 INFO L226 Difference]: Without dead ends: 2298 [2021-12-17 05:01:29,349 INFO L932 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 [2021-12-17 05:01:29,355 INFO L933 BasicCegarLoop]: 516 mSDtfsCounter, 746 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 1623 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 1845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 1623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-17 05:01:29,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [746 Valid, 935 Invalid, 1845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 1623 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-17 05:01:29,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2298 states. [2021-12-17 05:01:29,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2298 to 2282. [2021-12-17 05:01:29,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2282 states, 2281 states have (on average 1.3726435773783427) internal successors, (3131), 2281 states have internal predecessors, (3131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:01:29,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2282 states to 2282 states and 3131 transitions. [2021-12-17 05:01:29,389 INFO L78 Accepts]: Start accepts. Automaton has 2282 states and 3131 transitions. Word has length 158 [2021-12-17 05:01:29,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 05:01:29,390 INFO L470 AbstractCegarLoop]: Abstraction has 2282 states and 3131 transitions. [2021-12-17 05:01:29,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:01:29,391 INFO L276 IsEmpty]: Start isEmpty. Operand 2282 states and 3131 transitions. [2021-12-17 05:01:29,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-12-17 05:01:29,392 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 05:01:29,392 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 05:01:29,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 05:01:29,393 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 05:01:29,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 05:01:29,393 INFO L85 PathProgramCache]: Analyzing trace with hash -832731998, now seen corresponding path program 1 times [2021-12-17 05:01:29,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 05:01:29,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824349819] [2021-12-17 05:01:29,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:01:29,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 05:01:29,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:01:29,530 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 89 proven. 63 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-17 05:01:29,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 05:01:29,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824349819] [2021-12-17 05:01:29,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824349819] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 05:01:29,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017363548] [2021-12-17 05:01:29,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:01:29,531 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 05:01:29,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 05:01:29,566 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 05:01:29,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-17 05:01:29,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:01:29,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 05:01:29,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 05:01:29,967 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-12-17 05:01:29,968 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 05:01:29,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017363548] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 05:01:29,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 05:01:29,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-12-17 05:01:29,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991890103] [2021-12-17 05:01:29,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 05:01:29,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 05:01:29,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 05:01:29,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 05:01:29,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-17 05:01:29,970 INFO L87 Difference]: Start difference. First operand 2282 states and 3131 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:01:31,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 05:01:31,546 INFO L93 Difference]: Finished difference Result 5850 states and 8323 transitions. [2021-12-17 05:01:31,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 05:01:31,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 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 182 [2021-12-17 05:01:31,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 05:01:31,557 INFO L225 Difference]: With dead ends: 5850 [2021-12-17 05:01:31,557 INFO L226 Difference]: Without dead ends: 3995 [2021-12-17 05:01:31,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-17 05:01:31,559 INFO L933 BasicCegarLoop]: 516 mSDtfsCounter, 386 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-17 05:01:31,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [386 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-17 05:01:31,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3995 states. [2021-12-17 05:01:31,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3995 to 3142. [2021-12-17 05:01:31,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3142 states, 3141 states have (on average 1.274434893346068) internal successors, (4003), 3141 states have internal predecessors, (4003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:01:31,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3142 states to 3142 states and 4003 transitions. [2021-12-17 05:01:31,597 INFO L78 Accepts]: Start accepts. Automaton has 3142 states and 4003 transitions. Word has length 182 [2021-12-17 05:01:31,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 05:01:31,598 INFO L470 AbstractCegarLoop]: Abstraction has 3142 states and 4003 transitions. [2021-12-17 05:01:31,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:01:31,598 INFO L276 IsEmpty]: Start isEmpty. Operand 3142 states and 4003 transitions. [2021-12-17 05:01:31,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-12-17 05:01:31,600 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 05:01:31,600 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 05:01:31,620 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-17 05:01:31,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 05:01:31,817 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 05:01:31,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 05:01:31,818 INFO L85 PathProgramCache]: Analyzing trace with hash -878840060, now seen corresponding path program 1 times [2021-12-17 05:01:31,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 05:01:31,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54563486] [2021-12-17 05:01:31,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:01:31,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 05:01:31,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:01:31,884 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 05:01:31,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 05:01:31,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54563486] [2021-12-17 05:01:31,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54563486] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 05:01:31,885 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 05:01:31,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 05:01:31,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407013007] [2021-12-17 05:01:31,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 05:01:31,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 05:01:31,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 05:01:31,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 05:01:31,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-17 05:01:31,886 INFO L87 Difference]: Start difference. First operand 3142 states and 4003 transitions. Second operand has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:01:34,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 05:01:34,126 INFO L93 Difference]: Finished difference Result 8024 states and 10527 transitions. [2021-12-17 05:01:34,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 05:01:34,126 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 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 195 [2021-12-17 05:01:34,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 05:01:34,136 INFO L225 Difference]: With dead ends: 8024 [2021-12-17 05:01:34,137 INFO L226 Difference]: Without dead ends: 4884 [2021-12-17 05:01:34,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-17 05:01:34,139 INFO L933 BasicCegarLoop]: 760 mSDtfsCounter, 1127 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 1794 mSolverCounterSat, 1099 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1127 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 2893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1099 IncrementalHoareTripleChecker+Valid, 1794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-17 05:01:34,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1127 Valid, 870 Invalid, 2893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1099 Valid, 1794 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-17 05:01:34,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4884 states. [2021-12-17 05:01:34,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4884 to 4852. [2021-12-17 05:01:34,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4852 states, 4851 states have (on average 1.2665429808286952) internal successors, (6144), 4851 states have internal predecessors, (6144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:01:34,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4852 states to 4852 states and 6144 transitions. [2021-12-17 05:01:34,198 INFO L78 Accepts]: Start accepts. Automaton has 4852 states and 6144 transitions. Word has length 195 [2021-12-17 05:01:34,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 05:01:34,199 INFO L470 AbstractCegarLoop]: Abstraction has 4852 states and 6144 transitions. [2021-12-17 05:01:34,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:01:34,199 INFO L276 IsEmpty]: Start isEmpty. Operand 4852 states and 6144 transitions. [2021-12-17 05:01:34,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-12-17 05:01:34,201 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 05:01:34,201 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 05:01:34,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 05:01:34,201 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 05:01:34,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 05:01:34,202 INFO L85 PathProgramCache]: Analyzing trace with hash 814886771, now seen corresponding path program 1 times [2021-12-17 05:01:34,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 05:01:34,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646003843] [2021-12-17 05:01:34,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:01:34,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 05:01:34,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:01:34,258 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-12-17 05:01:34,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 05:01:34,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646003843] [2021-12-17 05:01:34,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646003843] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 05:01:34,258 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 05:01:34,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 05:01:34,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178946154] [2021-12-17 05:01:34,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 05:01:34,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 05:01:34,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 05:01:34,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 05:01:34,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 05:01:34,260 INFO L87 Difference]: Start difference. First operand 4852 states and 6144 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:01:35,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 05:01:35,893 INFO L93 Difference]: Finished difference Result 12249 states and 15825 transitions. [2021-12-17 05:01:35,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 05:01:35,901 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 201 [2021-12-17 05:01:35,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 05:01:35,918 INFO L225 Difference]: With dead ends: 12249 [2021-12-17 05:01:35,918 INFO L226 Difference]: Without dead ends: 7399 [2021-12-17 05:01:35,923 INFO L932 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 [2021-12-17 05:01:35,924 INFO L933 BasicCegarLoop]: 481 mSDtfsCounter, 401 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1339 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 1695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 1339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-17 05:01:35,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [401 Valid, 545 Invalid, 1695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 1339 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-17 05:01:35,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7399 states. [2021-12-17 05:01:35,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7399 to 4826. [2021-12-17 05:01:35,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4826 states, 4825 states have (on average 1.2652849740932643) internal successors, (6105), 4825 states have internal predecessors, (6105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:01:36,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4826 states to 4826 states and 6105 transitions. [2021-12-17 05:01:36,000 INFO L78 Accepts]: Start accepts. Automaton has 4826 states and 6105 transitions. Word has length 201 [2021-12-17 05:01:36,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 05:01:36,001 INFO L470 AbstractCegarLoop]: Abstraction has 4826 states and 6105 transitions. [2021-12-17 05:01:36,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:01:36,001 INFO L276 IsEmpty]: Start isEmpty. Operand 4826 states and 6105 transitions. [2021-12-17 05:01:36,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-12-17 05:01:36,003 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 05:01:36,003 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 05:01:36,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 05:01:36,003 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 05:01:36,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 05:01:36,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1562743007, now seen corresponding path program 1 times [2021-12-17 05:01:36,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 05:01:36,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947908086] [2021-12-17 05:01:36,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:01:36,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 05:01:36,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:01:36,112 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 75 proven. 14 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-12-17 05:01:36,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 05:01:36,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947908086] [2021-12-17 05:01:36,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947908086] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 05:01:36,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907562910] [2021-12-17 05:01:36,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:01:36,114 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 05:01:36,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 05:01:36,140 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 05:01:36,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-17 05:01:36,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:01:36,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 05:01:36,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 05:01:36,423 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-12-17 05:01:36,424 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 05:01:36,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907562910] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 05:01:36,424 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 05:01:36,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-12-17 05:01:36,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342563370] [2021-12-17 05:01:36,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 05:01:36,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 05:01:36,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 05:01:36,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 05:01:36,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-17 05:01:36,427 INFO L87 Difference]: Start difference. First operand 4826 states and 6105 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:01:38,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 05:01:38,816 INFO L93 Difference]: Finished difference Result 13486 states and 17137 transitions. [2021-12-17 05:01:38,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 05:01:38,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 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 214 [2021-12-17 05:01:38,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 05:01:38,838 INFO L225 Difference]: With dead ends: 13486 [2021-12-17 05:01:38,851 INFO L226 Difference]: Without dead ends: 7355 [2021-12-17 05:01:38,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-17 05:01:38,860 INFO L933 BasicCegarLoop]: 605 mSDtfsCounter, 546 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 1277 mSolverCounterSat, 544 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 1821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 544 IncrementalHoareTripleChecker+Valid, 1277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-17 05:01:38,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [546 Valid, 635 Invalid, 1821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [544 Valid, 1277 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-17 05:01:38,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7355 states. [2021-12-17 05:01:38,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7355 to 6499. [2021-12-17 05:01:38,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6499 states, 6498 states have (on average 1.1871345029239766) internal successors, (7714), 6498 states have internal predecessors, (7714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:01:38,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6499 states to 6499 states and 7714 transitions. [2021-12-17 05:01:38,990 INFO L78 Accepts]: Start accepts. Automaton has 6499 states and 7714 transitions. Word has length 214 [2021-12-17 05:01:38,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 05:01:38,990 INFO L470 AbstractCegarLoop]: Abstraction has 6499 states and 7714 transitions. [2021-12-17 05:01:38,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:01:38,991 INFO L276 IsEmpty]: Start isEmpty. Operand 6499 states and 7714 transitions. [2021-12-17 05:01:38,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2021-12-17 05:01:38,993 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 05:01:38,996 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 05:01:39,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-17 05:01:39,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-12-17 05:01:39,217 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 05:01:39,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 05:01:39,218 INFO L85 PathProgramCache]: Analyzing trace with hash 706596333, now seen corresponding path program 1 times [2021-12-17 05:01:39,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 05:01:39,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573376407] [2021-12-17 05:01:39,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:01:39,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 05:01:39,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:01:39,317 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-12-17 05:01:39,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 05:01:39,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573376407] [2021-12-17 05:01:39,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573376407] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 05:01:39,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 05:01:39,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 05:01:39,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803965106] [2021-12-17 05:01:39,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 05:01:39,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 05:01:39,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 05:01:39,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 05:01:39,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 05:01:39,320 INFO L87 Difference]: Start difference. First operand 6499 states and 7714 transitions. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:01:40,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 05:01:40,829 INFO L93 Difference]: Finished difference Result 16838 states and 20158 transitions. [2021-12-17 05:01:40,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 05:01:40,830 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 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 267 [2021-12-17 05:01:40,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 05:01:40,845 INFO L225 Difference]: With dead ends: 16838 [2021-12-17 05:01:40,845 INFO L226 Difference]: Without dead ends: 10341 [2021-12-17 05:01:40,853 INFO L932 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 [2021-12-17 05:01:40,855 INFO L933 BasicCegarLoop]: 291 mSDtfsCounter, 442 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 1196 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 1421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 1196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-17 05:01:40,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [442 Valid, 326 Invalid, 1421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 1196 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-17 05:01:40,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10341 states. [2021-12-17 05:01:40,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10341 to 9484. [2021-12-17 05:01:40,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9484 states, 9483 states have (on average 1.1981440472424338) internal successors, (11362), 9483 states have internal predecessors, (11362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:01:40,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9484 states to 9484 states and 11362 transitions. [2021-12-17 05:01:40,989 INFO L78 Accepts]: Start accepts. Automaton has 9484 states and 11362 transitions. Word has length 267 [2021-12-17 05:01:40,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 05:01:40,990 INFO L470 AbstractCegarLoop]: Abstraction has 9484 states and 11362 transitions. [2021-12-17 05:01:40,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:01:40,990 INFO L276 IsEmpty]: Start isEmpty. Operand 9484 states and 11362 transitions. [2021-12-17 05:01:40,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2021-12-17 05:01:40,993 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 05:01:40,994 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 05:01:40,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 05:01:40,994 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 05:01:40,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 05:01:40,995 INFO L85 PathProgramCache]: Analyzing trace with hash -456337817, now seen corresponding path program 1 times [2021-12-17 05:01:40,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 05:01:40,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575124713] [2021-12-17 05:01:40,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:01:40,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 05:01:41,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:01:41,088 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 277 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-12-17 05:01:41,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 05:01:41,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575124713] [2021-12-17 05:01:41,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575124713] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 05:01:41,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 05:01:41,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 05:01:41,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768059136] [2021-12-17 05:01:41,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 05:01:41,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 05:01:41,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 05:01:41,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 05:01:41,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 05:01:41,091 INFO L87 Difference]: Start difference. First operand 9484 states and 11362 transitions. Second operand has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:01:43,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 05:01:43,421 INFO L93 Difference]: Finished difference Result 31365 states and 37439 transitions. [2021-12-17 05:01:43,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 05:01:43,427 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 0 states have call successors, (0), 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 307 [2021-12-17 05:01:43,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 05:01:43,456 INFO L225 Difference]: With dead ends: 31365 [2021-12-17 05:01:43,456 INFO L226 Difference]: Without dead ends: 20604 [2021-12-17 05:01:43,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 05:01:43,468 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 871 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 2368 mSolverCounterSat, 448 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 871 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 2816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 448 IncrementalHoareTripleChecker+Valid, 2368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-17 05:01:43,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [871 Valid, 211 Invalid, 2816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [448 Valid, 2368 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-17 05:01:43,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20604 states. [2021-12-17 05:01:43,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20604 to 19719. [2021-12-17 05:01:43,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19719 states, 19718 states have (on average 1.1815092808601277) internal successors, (23297), 19718 states have internal predecessors, (23297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:01:43,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19719 states to 19719 states and 23297 transitions. [2021-12-17 05:01:43,768 INFO L78 Accepts]: Start accepts. Automaton has 19719 states and 23297 transitions. Word has length 307 [2021-12-17 05:01:43,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 05:01:43,769 INFO L470 AbstractCegarLoop]: Abstraction has 19719 states and 23297 transitions. [2021-12-17 05:01:43,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:01:43,769 INFO L276 IsEmpty]: Start isEmpty. Operand 19719 states and 23297 transitions. [2021-12-17 05:01:43,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2021-12-17 05:01:43,775 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 05:01:43,776 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 05:01:43,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 05:01:43,776 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 05:01:43,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 05:01:43,777 INFO L85 PathProgramCache]: Analyzing trace with hash -847313106, now seen corresponding path program 1 times [2021-12-17 05:01:43,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 05:01:43,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121900636] [2021-12-17 05:01:43,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:01:43,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 05:01:43,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:01:43,917 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 232 proven. 82 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-17 05:01:43,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 05:01:43,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121900636] [2021-12-17 05:01:43,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121900636] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 05:01:43,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32494335] [2021-12-17 05:01:43,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:01:43,918 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 05:01:43,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 05:01:43,932 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 05:01:43,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-17 05:01:44,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:01:44,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-17 05:01:44,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 05:01:44,959 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 206 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 05:01:44,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 05:01:45,595 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 359 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 05:01:45,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32494335] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-17 05:01:45,595 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-17 05:01:45,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3, 4] total 7 [2021-12-17 05:01:45,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843644225] [2021-12-17 05:01:45,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 05:01:45,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 05:01:45,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 05:01:45,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 05:01:45,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-12-17 05:01:45,597 INFO L87 Difference]: Start difference. First operand 19719 states and 23297 transitions. Second operand has 5 states, 5 states have (on average 77.6) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:01:48,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 05:01:48,867 INFO L93 Difference]: Finished difference Result 63284 states and 74303 transitions. [2021-12-17 05:01:48,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 05:01:48,868 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 77.6) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 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 388 [2021-12-17 05:01:48,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 05:01:48,937 INFO L225 Difference]: With dead ends: 63284 [2021-12-17 05:01:48,937 INFO L226 Difference]: Without dead ends: 42292 [2021-12-17 05:01:48,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 777 GetRequests, 769 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-12-17 05:01:48,963 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 1679 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 2589 mSolverCounterSat, 1091 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1679 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 3680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1091 IncrementalHoareTripleChecker+Valid, 2589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-17 05:01:48,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1679 Valid, 136 Invalid, 3680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1091 Valid, 2589 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-12-17 05:01:48,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42292 states. [2021-12-17 05:01:49,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42292 to 42281. [2021-12-17 05:01:49,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42281 states, 42280 states have (on average 1.130558183538316) internal successors, (47800), 42280 states have internal predecessors, (47800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:01:49,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42281 states to 42281 states and 47800 transitions. [2021-12-17 05:01:49,477 INFO L78 Accepts]: Start accepts. Automaton has 42281 states and 47800 transitions. Word has length 388 [2021-12-17 05:01:49,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 05:01:49,478 INFO L470 AbstractCegarLoop]: Abstraction has 42281 states and 47800 transitions. [2021-12-17 05:01:49,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 77.6) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:01:49,478 INFO L276 IsEmpty]: Start isEmpty. Operand 42281 states and 47800 transitions. [2021-12-17 05:01:49,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2021-12-17 05:01:49,644 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 05:01:49,644 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 05:01:49,676 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-17 05:01:49,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 05:01:49,860 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 05:01:49,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 05:01:49,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1251657393, now seen corresponding path program 1 times [2021-12-17 05:01:49,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 05:01:49,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586853088] [2021-12-17 05:01:49,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:01:49,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 05:01:49,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:01:49,985 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 401 proven. 73 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2021-12-17 05:01:49,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 05:01:49,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586853088] [2021-12-17 05:01:49,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586853088] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 05:01:49,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826572761] [2021-12-17 05:01:49,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:01:49,986 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 05:01:49,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 05:01:49,987 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 05:01:50,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-17 05:01:50,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:01:50,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 647 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-17 05:01:50,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 05:01:50,952 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 401 proven. 73 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2021-12-17 05:01:50,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 05:01:51,640 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 474 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2021-12-17 05:01:51,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826572761] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-17 05:01:51,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-17 05:01:51,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2021-12-17 05:01:51,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699922011] [2021-12-17 05:01:51,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 05:01:51,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 05:01:51,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 05:01:51,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 05:01:51,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-17 05:01:51,644 INFO L87 Difference]: Start difference. First operand 42281 states and 47800 transitions. Second operand has 4 states, 4 states have (on average 86.75) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:01:54,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 05:01:54,051 INFO L93 Difference]: Finished difference Result 100317 states and 113260 transitions. [2021-12-17 05:01:54,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 05:01:54,051 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 86.75) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 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 489 [2021-12-17 05:01:54,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 05:01:54,155 INFO L225 Difference]: With dead ends: 100317 [2021-12-17 05:01:54,155 INFO L226 Difference]: Without dead ends: 58038 [2021-12-17 05:01:54,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 979 GetRequests, 973 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-17 05:01:54,185 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 819 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 2169 mSolverCounterSat, 394 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 2563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 394 IncrementalHoareTripleChecker+Valid, 2169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-17 05:01:54,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [819 Valid, 137 Invalid, 2563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [394 Valid, 2169 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-17 05:01:54,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58038 states. [2021-12-17 05:01:54,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58038 to 54206. [2021-12-17 05:01:54,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54206 states, 54205 states have (on average 1.1211880822802325) internal successors, (60774), 54205 states have internal predecessors, (60774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:01:54,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54206 states to 54206 states and 60774 transitions. [2021-12-17 05:01:54,929 INFO L78 Accepts]: Start accepts. Automaton has 54206 states and 60774 transitions. Word has length 489 [2021-12-17 05:01:54,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 05:01:54,929 INFO L470 AbstractCegarLoop]: Abstraction has 54206 states and 60774 transitions. [2021-12-17 05:01:54,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.75) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:01:54,929 INFO L276 IsEmpty]: Start isEmpty. Operand 54206 states and 60774 transitions. [2021-12-17 05:01:54,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2021-12-17 05:01:54,943 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 05:01:54,944 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-17 05:01:54,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-17 05:01:55,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 05:01:55,161 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 05:01:55,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 05:01:55,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1707859524, now seen corresponding path program 1 times [2021-12-17 05:01:55,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 05:01:55,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545694132] [2021-12-17 05:01:55,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:01:55,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 05:01:55,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:01:55,558 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 537 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2021-12-17 05:01:55,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 05:01:55,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545694132] [2021-12-17 05:01:55,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545694132] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 05:01:55,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 05:01:55,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 05:01:55,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157339109] [2021-12-17 05:01:55,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 05:01:55,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 05:01:55,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 05:01:55,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 05:01:55,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 05:01:55,561 INFO L87 Difference]: Start difference. First operand 54206 states and 60774 transitions. Second operand has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:01:57,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 05:01:57,307 INFO L93 Difference]: Finished difference Result 124206 states and 138962 transitions. [2021-12-17 05:01:57,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 05:01:57,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 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 518 [2021-12-17 05:01:57,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 05:01:57,398 INFO L225 Difference]: With dead ends: 124206 [2021-12-17 05:01:57,398 INFO L226 Difference]: Without dead ends: 70002 [2021-12-17 05:01:57,432 INFO L932 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 [2021-12-17 05:01:57,433 INFO L933 BasicCegarLoop]: 701 mSDtfsCounter, 364 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 1161 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 1290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-17 05:01:57,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [364 Valid, 752 Invalid, 1290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1161 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-17 05:01:57,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70002 states. [2021-12-17 05:01:58,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70002 to 69991. [2021-12-17 05:01:58,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69991 states, 69990 states have (on average 1.0986855265037863) internal successors, (76897), 69990 states have internal predecessors, (76897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:01:58,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69991 states to 69991 states and 76897 transitions. [2021-12-17 05:01:58,260 INFO L78 Accepts]: Start accepts. Automaton has 69991 states and 76897 transitions. Word has length 518 [2021-12-17 05:01:58,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 05:01:58,261 INFO L470 AbstractCegarLoop]: Abstraction has 69991 states and 76897 transitions. [2021-12-17 05:01:58,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:01:58,261 INFO L276 IsEmpty]: Start isEmpty. Operand 69991 states and 76897 transitions. [2021-12-17 05:01:58,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2021-12-17 05:01:58,275 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 05:01:58,275 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 05:01:58,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-17 05:01:58,275 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 05:01:58,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 05:01:58,276 INFO L85 PathProgramCache]: Analyzing trace with hash 591051615, now seen corresponding path program 1 times [2021-12-17 05:01:58,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 05:01:58,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103432422] [2021-12-17 05:01:58,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:01:58,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 05:01:58,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:01:58,598 INFO L134 CoverageAnalysis]: Checked inductivity of 728 backedges. 459 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2021-12-17 05:01:58,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 05:01:58,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103432422] [2021-12-17 05:01:58,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103432422] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 05:01:58,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 05:01:58,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 05:01:58,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739486607] [2021-12-17 05:01:58,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 05:01:58,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 05:01:58,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 05:01:58,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 05:01:58,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 05:01:58,601 INFO L87 Difference]: Start difference. First operand 69991 states and 76897 transitions. Second operand has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:02:01,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 05:02:01,622 INFO L93 Difference]: Finished difference Result 162143 states and 177788 transitions. [2021-12-17 05:02:01,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 05:02:01,623 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 0 states have call successors, (0), 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 520 [2021-12-17 05:02:01,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 05:02:01,738 INFO L225 Difference]: With dead ends: 162143 [2021-12-17 05:02:01,739 INFO L226 Difference]: Without dead ends: 91304 [2021-12-17 05:02:01,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 05:02:01,771 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 817 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 2477 mSolverCounterSat, 389 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 2866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 389 IncrementalHoareTripleChecker+Valid, 2477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-17 05:02:01,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [817 Valid, 155 Invalid, 2866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [389 Valid, 2477 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-17 05:02:01,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91304 states. [2021-12-17 05:02:02,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91304 to 82324. [2021-12-17 05:02:02,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82324 states, 82323 states have (on average 1.098526535719058) internal successors, (90434), 82323 states have internal predecessors, (90434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:02:02,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82324 states to 82324 states and 90434 transitions. [2021-12-17 05:02:02,859 INFO L78 Accepts]: Start accepts. Automaton has 82324 states and 90434 transitions. Word has length 520 [2021-12-17 05:02:02,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 05:02:02,860 INFO L470 AbstractCegarLoop]: Abstraction has 82324 states and 90434 transitions. [2021-12-17 05:02:02,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:02:02,860 INFO L276 IsEmpty]: Start isEmpty. Operand 82324 states and 90434 transitions. [2021-12-17 05:02:02,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 562 [2021-12-17 05:02:02,923 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 05:02:02,923 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 05:02:02,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-17 05:02:02,924 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 05:02:02,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 05:02:02,924 INFO L85 PathProgramCache]: Analyzing trace with hash 615543433, now seen corresponding path program 1 times [2021-12-17 05:02:02,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 05:02:02,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929802744] [2021-12-17 05:02:02,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:02:02,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 05:02:02,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:02:03,072 INFO L134 CoverageAnalysis]: Checked inductivity of 698 backedges. 408 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2021-12-17 05:02:03,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 05:02:03,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929802744] [2021-12-17 05:02:03,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929802744] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 05:02:03,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 05:02:03,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 05:02:03,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240545234] [2021-12-17 05:02:03,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 05:02:03,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 05:02:03,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 05:02:03,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 05:02:03,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 05:02:03,075 INFO L87 Difference]: Start difference. First operand 82324 states and 90434 transitions. Second operand has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:02:04,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 05:02:04,958 INFO L93 Difference]: Finished difference Result 179956 states and 197553 transitions. [2021-12-17 05:02:04,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 05:02:04,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 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 561 [2021-12-17 05:02:04,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 05:02:05,091 INFO L225 Difference]: With dead ends: 179956 [2021-12-17 05:02:05,091 INFO L226 Difference]: Without dead ends: 97634 [2021-12-17 05:02:05,298 INFO L932 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 [2021-12-17 05:02:05,299 INFO L933 BasicCegarLoop]: 640 mSDtfsCounter, 474 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1141 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 1310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 1141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-17 05:02:05,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [474 Valid, 678 Invalid, 1310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 1141 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-17 05:02:05,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97634 states. [2021-12-17 05:02:06,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97634 to 97627. [2021-12-17 05:02:06,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97627 states, 97626 states have (on average 1.085090037490013) internal successors, (105933), 97626 states have internal predecessors, (105933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:02:06,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97627 states to 97627 states and 105933 transitions. [2021-12-17 05:02:06,407 INFO L78 Accepts]: Start accepts. Automaton has 97627 states and 105933 transitions. Word has length 561 [2021-12-17 05:02:06,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 05:02:06,423 INFO L470 AbstractCegarLoop]: Abstraction has 97627 states and 105933 transitions. [2021-12-17 05:02:06,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:02:06,424 INFO L276 IsEmpty]: Start isEmpty. Operand 97627 states and 105933 transitions. [2021-12-17 05:02:06,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 581 [2021-12-17 05:02:06,457 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 05:02:06,458 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 05:02:06,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-17 05:02:06,458 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 05:02:06,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 05:02:06,459 INFO L85 PathProgramCache]: Analyzing trace with hash -871208447, now seen corresponding path program 1 times [2021-12-17 05:02:06,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 05:02:06,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253724385] [2021-12-17 05:02:06,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:02:06,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 05:02:06,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:02:06,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1095 backedges. 781 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2021-12-17 05:02:06,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 05:02:06,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253724385] [2021-12-17 05:02:06,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253724385] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 05:02:06,641 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 05:02:06,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 05:02:06,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314540843] [2021-12-17 05:02:06,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 05:02:06,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 05:02:06,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 05:02:06,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 05:02:06,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 05:02:06,642 INFO L87 Difference]: Start difference. First operand 97627 states and 105933 transitions. Second operand has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:02:08,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 05:02:08,780 INFO L93 Difference]: Finished difference Result 205032 states and 222947 transitions. [2021-12-17 05:02:08,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 05:02:08,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 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 580 [2021-12-17 05:02:08,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 05:02:08,930 INFO L225 Difference]: With dead ends: 205032 [2021-12-17 05:02:08,930 INFO L226 Difference]: Without dead ends: 107407 [2021-12-17 05:02:08,962 INFO L932 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 [2021-12-17 05:02:08,963 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 351 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 1149 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 1357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 1149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-17 05:02:08,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [351 Valid, 217 Invalid, 1357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 1149 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-17 05:02:09,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107407 states. [2021-12-17 05:02:10,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107407 to 103143. [2021-12-17 05:02:10,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103143 states, 103142 states have (on average 1.0787555021232864) internal successors, (111265), 103142 states have internal predecessors, (111265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:02:10,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103143 states to 103143 states and 111265 transitions. [2021-12-17 05:02:10,362 INFO L78 Accepts]: Start accepts. Automaton has 103143 states and 111265 transitions. Word has length 580 [2021-12-17 05:02:10,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 05:02:10,362 INFO L470 AbstractCegarLoop]: Abstraction has 103143 states and 111265 transitions. [2021-12-17 05:02:10,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:02:10,363 INFO L276 IsEmpty]: Start isEmpty. Operand 103143 states and 111265 transitions. [2021-12-17 05:02:10,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 614 [2021-12-17 05:02:10,385 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 05:02:10,386 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 05:02:10,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-17 05:02:10,386 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 05:02:10,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 05:02:10,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1457729283, now seen corresponding path program 1 times [2021-12-17 05:02:10,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 05:02:10,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086736533] [2021-12-17 05:02:10,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:02:10,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 05:02:10,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:02:10,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1085 backedges. 771 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2021-12-17 05:02:10,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 05:02:10,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086736533] [2021-12-17 05:02:10,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086736533] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 05:02:10,556 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 05:02:10,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 05:02:10,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065415380] [2021-12-17 05:02:10,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 05:02:10,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 05:02:10,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 05:02:10,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 05:02:10,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 05:02:10,558 INFO L87 Difference]: Start difference. First operand 103143 states and 111265 transitions. Second operand has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:02:12,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 05:02:12,609 INFO L93 Difference]: Finished difference Result 210964 states and 227612 transitions. [2021-12-17 05:02:12,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 05:02:12,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 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 613 [2021-12-17 05:02:12,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 05:02:12,758 INFO L225 Difference]: With dead ends: 210964 [2021-12-17 05:02:12,758 INFO L226 Difference]: Without dead ends: 107823 [2021-12-17 05:02:12,815 INFO L932 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 [2021-12-17 05:02:12,816 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 278 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 1123 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 1282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 1123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-17 05:02:12,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 269 Invalid, 1282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 1123 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-17 05:02:12,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107823 states. [2021-12-17 05:02:14,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107823 to 102711. [2021-12-17 05:02:14,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102711 states, 102710 states have (on average 1.0739850063284977) internal successors, (110309), 102710 states have internal predecessors, (110309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:02:14,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102711 states to 102711 states and 110309 transitions. [2021-12-17 05:02:14,228 INFO L78 Accepts]: Start accepts. Automaton has 102711 states and 110309 transitions. Word has length 613 [2021-12-17 05:02:14,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 05:02:14,229 INFO L470 AbstractCegarLoop]: Abstraction has 102711 states and 110309 transitions. [2021-12-17 05:02:14,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:02:14,229 INFO L276 IsEmpty]: Start isEmpty. Operand 102711 states and 110309 transitions. [2021-12-17 05:02:14,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 622 [2021-12-17 05:02:14,249 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 05:02:14,249 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 05:02:14,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-17 05:02:14,250 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 05:02:14,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 05:02:14,250 INFO L85 PathProgramCache]: Analyzing trace with hash -268936776, now seen corresponding path program 1 times [2021-12-17 05:02:14,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 05:02:14,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759742688] [2021-12-17 05:02:14,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:02:14,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 05:02:14,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:02:14,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1093 backedges. 662 proven. 0 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2021-12-17 05:02:14,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 05:02:14,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759742688] [2021-12-17 05:02:14,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759742688] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 05:02:14,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 05:02:14,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 05:02:14,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807396598] [2021-12-17 05:02:14,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 05:02:14,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 05:02:14,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 05:02:14,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 05:02:14,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 05:02:14,370 INFO L87 Difference]: Start difference. First operand 102711 states and 110309 transitions. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 2 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:02:15,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 05:02:15,883 INFO L93 Difference]: Finished difference Result 185804 states and 198990 transitions. [2021-12-17 05:02:15,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 05:02:15,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 2 states have internal predecessors, (321), 0 states have call successors, (0), 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 621 [2021-12-17 05:02:15,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 05:02:16,004 INFO L225 Difference]: With dead ends: 185804 [2021-12-17 05:02:16,005 INFO L226 Difference]: Without dead ends: 83094 [2021-12-17 05:02:16,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 05:02:16,066 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 561 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-17 05:02:16,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [561 Valid, 72 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-17 05:02:16,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83094 states. [2021-12-17 05:02:17,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83094 to 83082. [2021-12-17 05:02:17,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83082 states, 83081 states have (on average 1.0668744959738088) internal successors, (88637), 83081 states have internal predecessors, (88637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:02:17,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83082 states to 83082 states and 88637 transitions. [2021-12-17 05:02:17,376 INFO L78 Accepts]: Start accepts. Automaton has 83082 states and 88637 transitions. Word has length 621 [2021-12-17 05:02:17,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 05:02:17,376 INFO L470 AbstractCegarLoop]: Abstraction has 83082 states and 88637 transitions. [2021-12-17 05:02:17,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 2 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:02:17,377 INFO L276 IsEmpty]: Start isEmpty. Operand 83082 states and 88637 transitions. [2021-12-17 05:02:17,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 625 [2021-12-17 05:02:17,399 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 05:02:17,401 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 05:02:17,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-17 05:02:17,401 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 05:02:17,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 05:02:17,402 INFO L85 PathProgramCache]: Analyzing trace with hash -79309773, now seen corresponding path program 1 times [2021-12-17 05:02:17,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 05:02:17,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874554013] [2021-12-17 05:02:17,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:02:17,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 05:02:17,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:02:17,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1096 backedges. 782 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2021-12-17 05:02:17,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 05:02:17,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874554013] [2021-12-17 05:02:17,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874554013] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 05:02:17,794 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 05:02:17,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 05:02:17,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114097366] [2021-12-17 05:02:17,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 05:02:17,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 05:02:17,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 05:02:17,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 05:02:17,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 05:02:17,797 INFO L87 Difference]: Start difference. First operand 83082 states and 88637 transitions. Second operand has 4 states, 4 states have (on average 98.75) internal successors, (395), 4 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:02:19,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 05:02:19,965 INFO L93 Difference]: Finished difference Result 170421 states and 181772 transitions. [2021-12-17 05:02:19,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 05:02:19,965 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 98.75) internal successors, (395), 4 states have internal predecessors, (395), 0 states have call successors, (0), 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 624 [2021-12-17 05:02:19,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 05:02:20,066 INFO L225 Difference]: With dead ends: 170421 [2021-12-17 05:02:20,066 INFO L226 Difference]: Without dead ends: 87341 [2021-12-17 05:02:20,109 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 05:02:20,110 INFO L933 BasicCegarLoop]: 652 mSDtfsCounter, 694 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 2058 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 694 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 2209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 2058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-17 05:02:20,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [694 Valid, 698 Invalid, 2209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 2058 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-17 05:02:20,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87341 states. [2021-12-17 05:02:21,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87341 to 77535. [2021-12-17 05:02:21,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77535 states, 77534 states have (on average 1.0649908427270616) internal successors, (82573), 77534 states have internal predecessors, (82573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:02:21,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77535 states to 77535 states and 82573 transitions. [2021-12-17 05:02:21,410 INFO L78 Accepts]: Start accepts. Automaton has 77535 states and 82573 transitions. Word has length 624 [2021-12-17 05:02:21,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 05:02:21,411 INFO L470 AbstractCegarLoop]: Abstraction has 77535 states and 82573 transitions. [2021-12-17 05:02:21,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 98.75) internal successors, (395), 4 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:02:21,411 INFO L276 IsEmpty]: Start isEmpty. Operand 77535 states and 82573 transitions. [2021-12-17 05:02:21,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 643 [2021-12-17 05:02:21,430 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 05:02:21,431 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 05:02:21,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-17 05:02:21,431 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 05:02:21,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 05:02:21,432 INFO L85 PathProgramCache]: Analyzing trace with hash -183585280, now seen corresponding path program 1 times [2021-12-17 05:02:21,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 05:02:21,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746361237] [2021-12-17 05:02:21,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:02:21,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 05:02:21,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:02:21,609 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 394 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2021-12-17 05:02:21,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 05:02:21,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746361237] [2021-12-17 05:02:21,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746361237] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 05:02:21,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 05:02:21,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 05:02:21,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798725088] [2021-12-17 05:02:21,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 05:02:21,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 05:02:21,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 05:02:21,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 05:02:21,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 05:02:21,613 INFO L87 Difference]: Start difference. First operand 77535 states and 82573 transitions. Second operand has 4 states, 4 states have (on average 114.25) internal successors, (457), 4 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:02:24,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 05:02:24,634 INFO L93 Difference]: Finished difference Result 165732 states and 176235 transitions. [2021-12-17 05:02:24,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 05:02:24,634 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 114.25) internal successors, (457), 4 states have internal predecessors, (457), 0 states have call successors, (0), 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 642 [2021-12-17 05:02:24,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 05:02:24,725 INFO L225 Difference]: With dead ends: 165732 [2021-12-17 05:02:24,726 INFO L226 Difference]: Without dead ends: 87774 [2021-12-17 05:02:24,749 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 05:02:24,751 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 831 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 2321 mSolverCounterSat, 368 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 2689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 368 IncrementalHoareTripleChecker+Valid, 2321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-17 05:02:24,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [831 Valid, 104 Invalid, 2689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [368 Valid, 2321 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-17 05:02:24,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87774 states. [2021-12-17 05:02:25,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87774 to 77110. [2021-12-17 05:02:25,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77110 states, 77109 states have (on average 1.0650248349738682) internal successors, (82123), 77109 states have internal predecessors, (82123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:02:25,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77110 states to 77110 states and 82123 transitions. [2021-12-17 05:02:25,792 INFO L78 Accepts]: Start accepts. Automaton has 77110 states and 82123 transitions. Word has length 642 [2021-12-17 05:02:25,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 05:02:25,792 INFO L470 AbstractCegarLoop]: Abstraction has 77110 states and 82123 transitions. [2021-12-17 05:02:25,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 114.25) internal successors, (457), 4 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:02:25,792 INFO L276 IsEmpty]: Start isEmpty. Operand 77110 states and 82123 transitions. [2021-12-17 05:02:25,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 699 [2021-12-17 05:02:25,821 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 05:02:25,822 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 05:02:25,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-17 05:02:25,822 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 05:02:25,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 05:02:25,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1771166170, now seen corresponding path program 1 times [2021-12-17 05:02:25,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 05:02:25,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181936028] [2021-12-17 05:02:25,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:02:25,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 05:02:25,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:02:25,995 INFO L134 CoverageAnalysis]: Checked inductivity of 745 backedges. 431 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2021-12-17 05:02:25,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 05:02:25,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181936028] [2021-12-17 05:02:25,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181936028] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 05:02:25,996 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 05:02:25,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 05:02:25,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477873440] [2021-12-17 05:02:25,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 05:02:25,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 05:02:25,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 05:02:25,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 05:02:25,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 05:02:25,998 INFO L87 Difference]: Start difference. First operand 77110 states and 82123 transitions. Second operand has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:02:27,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 05:02:27,894 INFO L93 Difference]: Finished difference Result 156772 states and 166835 transitions. [2021-12-17 05:02:27,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 05:02:27,895 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 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 698 [2021-12-17 05:02:27,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 05:02:27,998 INFO L225 Difference]: With dead ends: 156772 [2021-12-17 05:02:27,998 INFO L226 Difference]: Without dead ends: 79664 [2021-12-17 05:02:28,029 INFO L932 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 [2021-12-17 05:02:28,029 INFO L933 BasicCegarLoop]: 250 mSDtfsCounter, 441 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 1119 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 1193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-17 05:02:28,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [441 Valid, 289 Invalid, 1193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1119 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-17 05:02:28,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79664 states. [2021-12-17 05:02:28,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79664 to 77534. [2021-12-17 05:02:29,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77534 states, 77533 states have (on average 1.06215417951066) internal successors, (82352), 77533 states have internal predecessors, (82352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:02:29,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77534 states to 77534 states and 82352 transitions. [2021-12-17 05:02:29,135 INFO L78 Accepts]: Start accepts. Automaton has 77534 states and 82352 transitions. Word has length 698 [2021-12-17 05:02:29,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 05:02:29,135 INFO L470 AbstractCegarLoop]: Abstraction has 77534 states and 82352 transitions. [2021-12-17 05:02:29,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:02:29,136 INFO L276 IsEmpty]: Start isEmpty. Operand 77534 states and 82352 transitions. [2021-12-17 05:02:29,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 730 [2021-12-17 05:02:29,169 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 05:02:29,170 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 05:02:29,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-17 05:02:29,170 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 05:02:29,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 05:02:29,171 INFO L85 PathProgramCache]: Analyzing trace with hash -889887061, now seen corresponding path program 1 times [2021-12-17 05:02:29,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 05:02:29,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427108235] [2021-12-17 05:02:29,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:02:29,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 05:02:29,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:02:29,357 INFO L134 CoverageAnalysis]: Checked inductivity of 790 backedges. 521 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2021-12-17 05:02:29,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 05:02:29,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427108235] [2021-12-17 05:02:29,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427108235] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 05:02:29,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 05:02:29,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 05:02:29,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873898136] [2021-12-17 05:02:29,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 05:02:29,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 05:02:29,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 05:02:29,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 05:02:29,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 05:02:29,360 INFO L87 Difference]: Start difference. First operand 77534 states and 82352 transitions. Second operand has 3 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:02:31,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 05:02:31,141 INFO L93 Difference]: Finished difference Result 161441 states and 171589 transitions. [2021-12-17 05:02:31,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 05:02:31,141 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 0 states have call successors, (0), 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 729 [2021-12-17 05:02:31,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 05:02:31,251 INFO L225 Difference]: With dead ends: 161441 [2021-12-17 05:02:31,251 INFO L226 Difference]: Without dead ends: 83057 [2021-12-17 05:02:31,559 INFO L932 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 [2021-12-17 05:02:31,561 INFO L933 BasicCegarLoop]: 542 mSDtfsCounter, 150 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 1095 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 1312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 1095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-17 05:02:31,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 569 Invalid, 1312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 1095 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-17 05:02:31,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83057 states. [2021-12-17 05:02:32,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83057 to 78807. [2021-12-17 05:02:32,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78807 states, 78806 states have (on average 1.0612009237875288) internal successors, (83629), 78806 states have internal predecessors, (83629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:02:32,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78807 states to 78807 states and 83629 transitions. [2021-12-17 05:02:32,688 INFO L78 Accepts]: Start accepts. Automaton has 78807 states and 83629 transitions. Word has length 729 [2021-12-17 05:02:32,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 05:02:32,689 INFO L470 AbstractCegarLoop]: Abstraction has 78807 states and 83629 transitions. [2021-12-17 05:02:32,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:02:32,689 INFO L276 IsEmpty]: Start isEmpty. Operand 78807 states and 83629 transitions. [2021-12-17 05:02:32,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 753 [2021-12-17 05:02:32,727 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 05:02:32,728 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 05:02:32,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-17 05:02:32,728 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 05:02:32,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 05:02:32,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1064493514, now seen corresponding path program 1 times [2021-12-17 05:02:32,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 05:02:32,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356075335] [2021-12-17 05:02:32,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:02:32,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 05:02:32,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:02:32,900 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 553 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2021-12-17 05:02:32,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 05:02:32,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356075335] [2021-12-17 05:02:32,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356075335] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 05:02:32,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 05:02:32,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 05:02:32,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614189610] [2021-12-17 05:02:32,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 05:02:32,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 05:02:32,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 05:02:32,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 05:02:32,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 05:02:32,903 INFO L87 Difference]: Start difference. First operand 78807 states and 83629 transitions. Second operand has 4 states, 4 states have (on average 147.5) internal successors, (590), 4 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:02:35,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 05:02:35,685 INFO L93 Difference]: Finished difference Result 170826 states and 180864 transitions. [2021-12-17 05:02:35,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 05:02:35,685 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 147.5) internal successors, (590), 4 states have internal predecessors, (590), 0 states have call successors, (0), 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 752 [2021-12-17 05:02:35,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 05:02:35,974 INFO L225 Difference]: With dead ends: 170826 [2021-12-17 05:02:35,976 INFO L226 Difference]: Without dead ends: 91596 [2021-12-17 05:02:36,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 05:02:36,005 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 692 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 2622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-17 05:02:36,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [692 Valid, 95 Invalid, 2622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-17 05:02:36,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91596 states. [2021-12-17 05:02:36,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91596 to 78807. [2021-12-17 05:02:37,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78807 states, 78806 states have (on average 1.0601603938786386) internal successors, (83547), 78806 states have internal predecessors, (83547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:02:37,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78807 states to 78807 states and 83547 transitions. [2021-12-17 05:02:37,116 INFO L78 Accepts]: Start accepts. Automaton has 78807 states and 83547 transitions. Word has length 752 [2021-12-17 05:02:37,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 05:02:37,116 INFO L470 AbstractCegarLoop]: Abstraction has 78807 states and 83547 transitions. [2021-12-17 05:02:37,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 147.5) internal successors, (590), 4 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:02:37,117 INFO L276 IsEmpty]: Start isEmpty. Operand 78807 states and 83547 transitions. [2021-12-17 05:02:37,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 767 [2021-12-17 05:02:37,152 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 05:02:37,153 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 05:02:37,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-17 05:02:37,153 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 05:02:37,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 05:02:37,154 INFO L85 PathProgramCache]: Analyzing trace with hash -865313067, now seen corresponding path program 1 times [2021-12-17 05:02:37,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 05:02:37,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373296788] [2021-12-17 05:02:37,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:02:37,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 05:02:37,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:02:37,359 INFO L134 CoverageAnalysis]: Checked inductivity of 831 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2021-12-17 05:02:37,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 05:02:37,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373296788] [2021-12-17 05:02:37,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373296788] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 05:02:37,360 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 05:02:37,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 05:02:37,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562919249] [2021-12-17 05:02:37,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 05:02:37,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 05:02:37,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 05:02:37,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 05:02:37,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 05:02:37,362 INFO L87 Difference]: Start difference. First operand 78807 states and 83547 transitions. Second operand has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:02:39,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 05:02:39,085 INFO L93 Difference]: Finished difference Result 165706 states and 175622 transitions. [2021-12-17 05:02:39,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 05:02:39,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 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 766 [2021-12-17 05:02:39,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 05:02:39,178 INFO L225 Difference]: With dead ends: 165706 [2021-12-17 05:02:39,178 INFO L226 Difference]: Without dead ends: 86476 [2021-12-17 05:02:39,226 INFO L932 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 [2021-12-17 05:02:39,227 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 434 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 1342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-17 05:02:39,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [434 Valid, 140 Invalid, 1342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-17 05:02:39,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86476 states. [2021-12-17 05:02:40,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86476 to 82208. [2021-12-17 05:02:40,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82208 states, 82207 states have (on average 1.0606274404856033) internal successors, (87191), 82207 states have internal predecessors, (87191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:02:40,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82208 states to 82208 states and 87191 transitions. [2021-12-17 05:02:40,598 INFO L78 Accepts]: Start accepts. Automaton has 82208 states and 87191 transitions. Word has length 766 [2021-12-17 05:02:40,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 05:02:40,599 INFO L470 AbstractCegarLoop]: Abstraction has 82208 states and 87191 transitions. [2021-12-17 05:02:40,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:02:40,599 INFO L276 IsEmpty]: Start isEmpty. Operand 82208 states and 87191 transitions. [2021-12-17 05:02:40,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 807 [2021-12-17 05:02:40,635 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 05:02:40,635 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 05:02:40,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-17 05:02:40,636 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 05:02:40,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 05:02:40,636 INFO L85 PathProgramCache]: Analyzing trace with hash -72128555, now seen corresponding path program 1 times [2021-12-17 05:02:40,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 05:02:40,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054099145] [2021-12-17 05:02:40,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:02:40,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 05:02:40,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:02:40,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1230 backedges. 761 proven. 0 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2021-12-17 05:02:40,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 05:02:40,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054099145] [2021-12-17 05:02:40,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054099145] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 05:02:40,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 05:02:40,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 05:02:40,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851097466] [2021-12-17 05:02:40,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 05:02:40,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 05:02:40,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 05:02:40,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 05:02:40,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 05:02:40,871 INFO L87 Difference]: Start difference. First operand 82208 states and 87191 transitions. Second operand has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:02:42,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 05:02:42,050 INFO L93 Difference]: Finished difference Result 82210 states and 87192 transitions. [2021-12-17 05:02:42,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 05:02:42,051 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 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 806 [2021-12-17 05:02:42,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 05:02:42,140 INFO L225 Difference]: With dead ends: 82210 [2021-12-17 05:02:42,140 INFO L226 Difference]: Without dead ends: 82208 [2021-12-17 05:02:42,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 05:02:42,166 INFO L933 BasicCegarLoop]: 496 mSDtfsCounter, 444 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1039 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 1112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 05:02:42,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [444 Valid, 504 Invalid, 1112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1039 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 05:02:42,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82208 states. [2021-12-17 05:02:43,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82208 to 82208. [2021-12-17 05:02:43,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82208 states, 82207 states have (on average 1.0605909472429356) internal successors, (87188), 82207 states have internal predecessors, (87188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:02:43,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82208 states to 82208 states and 87188 transitions. [2021-12-17 05:02:43,142 INFO L78 Accepts]: Start accepts. Automaton has 82208 states and 87188 transitions. Word has length 806 [2021-12-17 05:02:43,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 05:02:43,142 INFO L470 AbstractCegarLoop]: Abstraction has 82208 states and 87188 transitions. [2021-12-17 05:02:43,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:02:43,143 INFO L276 IsEmpty]: Start isEmpty. Operand 82208 states and 87188 transitions. [2021-12-17 05:02:43,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1060 [2021-12-17 05:02:43,203 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 05:02:43,203 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 05:02:43,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-17 05:02:43,204 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 05:02:43,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 05:02:43,204 INFO L85 PathProgramCache]: Analyzing trace with hash -761202473, now seen corresponding path program 1 times [2021-12-17 05:02:43,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 05:02:43,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268813972] [2021-12-17 05:02:43,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:02:43,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 05:02:43,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:02:43,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1789 backedges. 1199 proven. 0 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2021-12-17 05:02:43,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 05:02:43,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268813972] [2021-12-17 05:02:43,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268813972] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 05:02:43,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 05:02:43,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 05:02:43,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464717119] [2021-12-17 05:02:43,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 05:02:43,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 05:02:43,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 05:02:43,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 05:02:43,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 05:02:43,660 INFO L87 Difference]: Start difference. First operand 82208 states and 87188 transitions. Second operand has 3 states, 3 states have (on average 234.0) internal successors, (702), 3 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:02:45,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 05:02:45,162 INFO L93 Difference]: Finished difference Result 162287 states and 172034 transitions. [2021-12-17 05:02:45,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 05:02:45,163 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 234.0) internal successors, (702), 3 states have internal predecessors, (702), 0 states have call successors, (0), 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 1059 [2021-12-17 05:02:45,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 05:02:45,248 INFO L225 Difference]: With dead ends: 162287 [2021-12-17 05:02:45,249 INFO L226 Difference]: Without dead ends: 80081 [2021-12-17 05:02:45,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 05:02:45,295 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 137 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 1191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 05:02:45,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 217 Invalid, 1191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1090 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 05:02:45,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80081 states. [2021-12-17 05:02:46,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80081 to 78379. [2021-12-17 05:02:46,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78379 states, 78378 states have (on average 1.052246803950088) internal successors, (82473), 78378 states have internal predecessors, (82473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:02:46,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78379 states to 78379 states and 82473 transitions. [2021-12-17 05:02:46,287 INFO L78 Accepts]: Start accepts. Automaton has 78379 states and 82473 transitions. Word has length 1059 [2021-12-17 05:02:46,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 05:02:46,287 INFO L470 AbstractCegarLoop]: Abstraction has 78379 states and 82473 transitions. [2021-12-17 05:02:46,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 234.0) internal successors, (702), 3 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:02:46,288 INFO L276 IsEmpty]: Start isEmpty. Operand 78379 states and 82473 transitions. [2021-12-17 05:02:46,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1441 [2021-12-17 05:02:46,357 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 05:02:46,358 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 05:02:46,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-17 05:02:46,358 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 05:02:46,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 05:02:46,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1355611159, now seen corresponding path program 1 times [2021-12-17 05:02:46,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 05:02:46,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32638092] [2021-12-17 05:02:46,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:02:46,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 05:02:46,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:02:46,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2568 backedges. 1868 proven. 0 refuted. 0 times theorem prover too weak. 700 trivial. 0 not checked. [2021-12-17 05:02:46,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 05:02:46,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32638092] [2021-12-17 05:02:46,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32638092] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 05:02:46,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 05:02:46,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 05:02:46,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403798543] [2021-12-17 05:02:46,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 05:02:46,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 05:02:46,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 05:02:46,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 05:02:46,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 05:02:46,974 INFO L87 Difference]: Start difference. First operand 78379 states and 82473 transitions. Second operand has 3 states, 3 states have (on average 290.6666666666667) internal successors, (872), 3 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:02:48,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 05:02:48,330 INFO L93 Difference]: Finished difference Result 155478 states and 163611 transitions. [2021-12-17 05:02:48,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 05:02:48,331 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 290.6666666666667) internal successors, (872), 3 states have internal predecessors, (872), 0 states have call successors, (0), 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 1440 [2021-12-17 05:02:48,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 05:02:48,404 INFO L225 Difference]: With dead ends: 155478 [2021-12-17 05:02:48,404 INFO L226 Difference]: Without dead ends: 77101 [2021-12-17 05:02:48,446 INFO L932 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 [2021-12-17 05:02:48,446 INFO L933 BasicCegarLoop]: 603 mSDtfsCounter, 109 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 1093 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 1103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 05:02:48,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 649 Invalid, 1103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1093 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 05:02:48,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77101 states. [2021-12-17 05:02:49,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77101 to 77099. [2021-12-17 05:02:49,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77099 states, 77098 states have (on average 1.0523619289735142) internal successors, (81135), 77098 states have internal predecessors, (81135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:02:49,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77099 states to 77099 states and 81135 transitions. [2021-12-17 05:02:49,393 INFO L78 Accepts]: Start accepts. Automaton has 77099 states and 81135 transitions. Word has length 1440 [2021-12-17 05:02:49,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 05:02:49,394 INFO L470 AbstractCegarLoop]: Abstraction has 77099 states and 81135 transitions. [2021-12-17 05:02:49,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 290.6666666666667) internal successors, (872), 3 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:02:49,394 INFO L276 IsEmpty]: Start isEmpty. Operand 77099 states and 81135 transitions. [2021-12-17 05:02:49,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1509 [2021-12-17 05:02:49,468 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 05:02:49,468 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 05:02:49,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-17 05:02:49,468 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 05:02:49,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 05:02:49,469 INFO L85 PathProgramCache]: Analyzing trace with hash 535623743, now seen corresponding path program 1 times [2021-12-17 05:02:49,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 05:02:49,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105413180] [2021-12-17 05:02:49,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:02:49,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms