./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label07.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/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label07.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 5c8eb0411a0e666031f5e256d7f5bf4c8ae4cc2cba31fba81985613c1fb5f8fa --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 02:25:17,749 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 02:25:17,756 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 02:25:17,806 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 02:25:17,807 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 02:25:17,810 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 02:25:17,811 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 02:25:17,816 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 02:25:17,818 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 02:25:17,821 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 02:25:17,821 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 02:25:17,823 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 02:25:17,823 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 02:25:17,827 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 02:25:17,829 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 02:25:17,830 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 02:25:17,834 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 02:25:17,835 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 02:25:17,836 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 02:25:17,838 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 02:25:17,841 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 02:25:17,842 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 02:25:17,843 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 02:25:17,844 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 02:25:17,847 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 02:25:17,849 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 02:25:17,849 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 02:25:17,850 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 02:25:17,851 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 02:25:17,851 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 02:25:17,852 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 02:25:17,853 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 02:25:17,854 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 02:25:17,855 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 02:25:17,856 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 02:25:17,856 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 02:25:17,856 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 02:25:17,856 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 02:25:17,857 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 02:25:17,857 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 02:25:17,858 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 02:25:17,859 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 02:25:17,879 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 02:25:17,880 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 02:25:17,880 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 02:25:17,880 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 02:25:17,881 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 02:25:17,881 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 02:25:17,881 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 02:25:17,881 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 02:25:17,882 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 02:25:17,882 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 02:25:17,882 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 02:25:17,883 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 02:25:17,883 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 02:25:17,883 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 02:25:17,883 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 02:25:17,883 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 02:25:17,883 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 02:25:17,884 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 02:25:17,884 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 02:25:17,884 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 02:25:17,884 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 02:25:17,884 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 02:25:17,884 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 02:25:17,885 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 02:25:17,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:25:17,885 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 02:25:17,885 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 02:25:17,885 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 02:25:17,886 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 02:25:17,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 02:25:17,886 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 02:25:17,886 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 02:25:17,886 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 02:25:17,886 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 02:25:17,887 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c8eb0411a0e666031f5e256d7f5bf4c8ae4cc2cba31fba81985613c1fb5f8fa [2021-12-16 02:25:18,104 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 02:25:18,125 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 02:25:18,127 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 02:25:18,128 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 02:25:18,129 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 02:25:18,130 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label07.c [2021-12-16 02:25:18,181 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7889eb125/645022f624bd4591a8cdc06c32f00914/FLAG6a1b76ceb [2021-12-16 02:25:18,854 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 02:25:18,854 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label07.c [2021-12-16 02:25:18,897 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7889eb125/645022f624bd4591a8cdc06c32f00914/FLAG6a1b76ceb [2021-12-16 02:25:19,210 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7889eb125/645022f624bd4591a8cdc06c32f00914 [2021-12-16 02:25:19,212 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 02:25:19,213 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 02:25:19,215 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 02:25:19,215 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 02:25:19,217 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 02:25:19,218 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:25:19" (1/1) ... [2021-12-16 02:25:19,219 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a055358 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:25:19, skipping insertion in model container [2021-12-16 02:25:19,219 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:25:19" (1/1) ... [2021-12-16 02:25:19,230 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 02:25:19,317 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 02:25:19,590 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/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label07.c[20426,20439] [2021-12-16 02:25:19,604 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/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label07.c[21268,21281] [2021-12-16 02:25:20,103 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:25:20,111 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 02:25:20,162 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/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label07.c[20426,20439] [2021-12-16 02:25:20,169 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/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label07.c[21268,21281] [2021-12-16 02:25:20,437 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:25:20,454 INFO L208 MainTranslator]: Completed translation [2021-12-16 02:25:20,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:25:20 WrapperNode [2021-12-16 02:25:20,455 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 02:25:20,456 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 02:25:20,456 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 02:25:20,456 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 02:25:20,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:25:20" (1/1) ... [2021-12-16 02:25:20,516 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:25:20" (1/1) ... [2021-12-16 02:25:20,826 INFO L137 Inliner]: procedures = 38, calls = 24, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 5210 [2021-12-16 02:25:20,826 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 02:25:20,827 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 02:25:20,843 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 02:25:20,843 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 02:25:20,850 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:25:20" (1/1) ... [2021-12-16 02:25:20,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:25:20" (1/1) ... [2021-12-16 02:25:20,962 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:25:20" (1/1) ... [2021-12-16 02:25:20,962 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:25:20" (1/1) ... [2021-12-16 02:25:21,169 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:25:20" (1/1) ... [2021-12-16 02:25:21,203 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:25:20" (1/1) ... [2021-12-16 02:25:21,247 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:25:20" (1/1) ... [2021-12-16 02:25:21,317 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 02:25:21,318 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 02:25:21,318 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 02:25:21,319 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 02:25:21,321 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:25:20" (1/1) ... [2021-12-16 02:25:21,326 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:25:21,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 02:25:21,346 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) [2021-12-16 02:25:21,353 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 [2021-12-16 02:25:21,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 02:25:21,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 02:25:21,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 02:25:21,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 02:25:21,487 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 02:25:21,488 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 02:25:24,131 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 02:25:24,141 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 02:25:24,142 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-16 02:25:24,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:25:24 BoogieIcfgContainer [2021-12-16 02:25:24,144 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 02:25:24,146 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 02:25:24,146 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 02:25:24,148 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 02:25:24,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 02:25:19" (1/3) ... [2021-12-16 02:25:24,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42fffd38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:25:24, skipping insertion in model container [2021-12-16 02:25:24,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:25:20" (2/3) ... [2021-12-16 02:25:24,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42fffd38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:25:24, skipping insertion in model container [2021-12-16 02:25:24,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:25:24" (3/3) ... [2021-12-16 02:25:24,151 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label07.c [2021-12-16 02:25:24,154 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 02:25:24,155 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-16 02:25:24,193 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 02:25:24,197 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 [2021-12-16 02:25:24,197 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-16 02:25:24,221 INFO L276 IsEmpty]: Start isEmpty. Operand has 944 states, 941 states have (on average 1.8979808714133901) internal successors, (1786), 943 states have internal predecessors, (1786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:25:24,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-16 02:25:24,225 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:25:24,226 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:25:24,227 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:25:24,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:25:24,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1917262015, now seen corresponding path program 1 times [2021-12-16 02:25:24,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:25:24,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373157744] [2021-12-16 02:25:24,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:25:24,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:25:24,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:25:24,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:25:24,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:25:24,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373157744] [2021-12-16 02:25:24,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373157744] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:25:24,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:25:24,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 02:25:24,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186306920] [2021-12-16 02:25:24,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:25:24,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 02:25:24,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:25:24,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 02:25:24,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 02:25:24,434 INFO L87 Difference]: Start difference. First operand has 944 states, 941 states have (on average 1.8979808714133901) internal successors, (1786), 943 states have internal predecessors, (1786), 0 states have call successors, (0), 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 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:25:27,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:25:27,377 INFO L93 Difference]: Finished difference Result 2587 states and 4966 transitions. [2021-12-16 02:25:27,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 02:25:27,379 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2021-12-16 02:25:27,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:25:27,397 INFO L225 Difference]: With dead ends: 2587 [2021-12-16 02:25:27,397 INFO L226 Difference]: Without dead ends: 1629 [2021-12-16 02:25:27,403 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 [2021-12-16 02:25:27,406 INFO L933 BasicCegarLoop]: 310 mSDtfsCounter, 1070 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2337 mSolverCounterSat, 1058 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1070 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 3395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1058 IncrementalHoareTripleChecker+Valid, 2337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-16 02:25:27,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1070 Valid, 321 Invalid, 3395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1058 Valid, 2337 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-16 02:25:27,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2021-12-16 02:25:27,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1629. [2021-12-16 02:25:27,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1629 states, 1627 states have (on average 1.8610940381069454) internal successors, (3028), 1628 states have internal predecessors, (3028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:25:27,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1629 states to 1629 states and 3028 transitions. [2021-12-16 02:25:27,493 INFO L78 Accepts]: Start accepts. Automaton has 1629 states and 3028 transitions. Word has length 7 [2021-12-16 02:25:27,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:25:27,494 INFO L470 AbstractCegarLoop]: Abstraction has 1629 states and 3028 transitions. [2021-12-16 02:25:27,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:25:27,494 INFO L276 IsEmpty]: Start isEmpty. Operand 1629 states and 3028 transitions. [2021-12-16 02:25:27,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-16 02:25:27,496 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:25:27,496 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] [2021-12-16 02:25:27,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 02:25:27,496 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:25:27,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:25:27,497 INFO L85 PathProgramCache]: Analyzing trace with hash 325703937, now seen corresponding path program 1 times [2021-12-16 02:25:27,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:25:27,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846074290] [2021-12-16 02:25:27,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:25:27,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:25:27,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:25:27,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:25:27,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:25:27,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846074290] [2021-12-16 02:25:27,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846074290] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:25:27,551 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:25:27,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 02:25:27,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136245008] [2021-12-16 02:25:27,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:25:27,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 02:25:27,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:25:27,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 02:25:27,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 02:25:27,554 INFO L87 Difference]: Start difference. First operand 1629 states and 3028 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:25:27,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:25:27,638 INFO L93 Difference]: Finished difference Result 1701 states and 3140 transitions. [2021-12-16 02:25:27,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 02:25:27,639 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2021-12-16 02:25:27,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:25:27,645 INFO L225 Difference]: With dead ends: 1701 [2021-12-16 02:25:27,645 INFO L226 Difference]: Without dead ends: 1629 [2021-12-16 02:25:27,649 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:25:27,651 INFO L933 BasicCegarLoop]: 1651 mSDtfsCounter, 3 mSDsluCounter, 4900 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6551 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:25:27,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 6551 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 02:25:27,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2021-12-16 02:25:27,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1629. [2021-12-16 02:25:27,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1629 states, 1627 states have (on average 1.830362630608482) internal successors, (2978), 1628 states have internal predecessors, (2978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:25:27,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1629 states to 1629 states and 2978 transitions. [2021-12-16 02:25:27,685 INFO L78 Accepts]: Start accepts. Automaton has 1629 states and 2978 transitions. Word has length 42 [2021-12-16 02:25:27,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:25:27,685 INFO L470 AbstractCegarLoop]: Abstraction has 1629 states and 2978 transitions. [2021-12-16 02:25:27,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:25:27,686 INFO L276 IsEmpty]: Start isEmpty. Operand 1629 states and 2978 transitions. [2021-12-16 02:25:27,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-12-16 02:25:27,694 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:25:27,694 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:25:27,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 02:25:27,694 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:25:27,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:25:27,696 INFO L85 PathProgramCache]: Analyzing trace with hash -147684936, now seen corresponding path program 1 times [2021-12-16 02:25:27,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:25:27,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130406329] [2021-12-16 02:25:27,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:25:27,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:25:27,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:25:27,844 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:25:27,845 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:25:27,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130406329] [2021-12-16 02:25:27,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130406329] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:25:27,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:25:27,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 02:25:27,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102298569] [2021-12-16 02:25:27,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:25:27,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 02:25:27,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:25:27,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 02:25:27,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 02:25:27,849 INFO L87 Difference]: Start difference. First operand 1629 states and 2978 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:25:30,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:25:30,420 INFO L93 Difference]: Finished difference Result 4635 states and 8601 transitions. [2021-12-16 02:25:30,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 02:25:30,447 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-12-16 02:25:30,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:25:30,457 INFO L225 Difference]: With dead ends: 4635 [2021-12-16 02:25:30,458 INFO L226 Difference]: Without dead ends: 3131 [2021-12-16 02:25:30,463 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 [2021-12-16 02:25:30,467 INFO L933 BasicCegarLoop]: 651 mSDtfsCounter, 889 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2269 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 2921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-16 02:25:30,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [889 Valid, 658 Invalid, 2921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2269 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-16 02:25:30,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3131 states. [2021-12-16 02:25:30,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3131 to 3131. [2021-12-16 02:25:30,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3131 states, 3129 states have (on average 1.5717481623521892) internal successors, (4918), 3130 states have internal predecessors, (4918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:25:30,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3131 states to 3131 states and 4918 transitions. [2021-12-16 02:25:30,527 INFO L78 Accepts]: Start accepts. Automaton has 3131 states and 4918 transitions. Word has length 80 [2021-12-16 02:25:30,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:25:30,527 INFO L470 AbstractCegarLoop]: Abstraction has 3131 states and 4918 transitions. [2021-12-16 02:25:30,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:25:30,528 INFO L276 IsEmpty]: Start isEmpty. Operand 3131 states and 4918 transitions. [2021-12-16 02:25:30,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-12-16 02:25:30,530 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:25:30,530 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:25:30,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 02:25:30,530 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:25:30,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:25:30,531 INFO L85 PathProgramCache]: Analyzing trace with hash 996573779, now seen corresponding path program 1 times [2021-12-16 02:25:30,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:25:30,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144541947] [2021-12-16 02:25:30,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:25:30,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:25:30,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:25:30,654 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:25:30,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:25:30,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144541947] [2021-12-16 02:25:30,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144541947] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:25:30,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:25:30,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 02:25:30,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168785784] [2021-12-16 02:25:30,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:25:30,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 02:25:30,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:25:30,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 02:25:30,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-16 02:25:30,657 INFO L87 Difference]: Start difference. First operand 3131 states and 4918 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:25:33,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:25:33,600 INFO L93 Difference]: Finished difference Result 6904 states and 10647 transitions. [2021-12-16 02:25:33,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 02:25:33,600 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-12-16 02:25:33,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:25:33,612 INFO L225 Difference]: With dead ends: 6904 [2021-12-16 02:25:33,612 INFO L226 Difference]: Without dead ends: 3898 [2021-12-16 02:25:33,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-16 02:25:33,621 INFO L933 BasicCegarLoop]: 861 mSDtfsCounter, 1595 mSDsluCounter, 1123 mSDsCounter, 0 mSdLazyCounter, 3930 mSolverCounterSat, 394 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1595 SdHoareTripleChecker+Valid, 1984 SdHoareTripleChecker+Invalid, 4324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 394 IncrementalHoareTripleChecker+Valid, 3930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-16 02:25:33,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1595 Valid, 1984 Invalid, 4324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [394 Valid, 3930 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-16 02:25:33,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3898 states. [2021-12-16 02:25:33,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3898 to 3882. [2021-12-16 02:25:33,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3882 states, 3880 states have (on average 1.4626288659793814) internal successors, (5675), 3881 states have internal predecessors, (5675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:25:33,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3882 states to 3882 states and 5675 transitions. [2021-12-16 02:25:33,686 INFO L78 Accepts]: Start accepts. Automaton has 3882 states and 5675 transitions. Word has length 82 [2021-12-16 02:25:33,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:25:33,687 INFO L470 AbstractCegarLoop]: Abstraction has 3882 states and 5675 transitions. [2021-12-16 02:25:33,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:25:33,687 INFO L276 IsEmpty]: Start isEmpty. Operand 3882 states and 5675 transitions. [2021-12-16 02:25:33,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-16 02:25:33,688 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:25:33,688 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:25:33,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 02:25:33,689 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:25:33,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:25:33,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1207745120, now seen corresponding path program 1 times [2021-12-16 02:25:33,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:25:33,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727692590] [2021-12-16 02:25:33,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:25:33,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:25:33,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:25:33,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:25:33,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:25:33,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727692590] [2021-12-16 02:25:33,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727692590] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:25:33,772 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:25:33,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 02:25:33,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135416205] [2021-12-16 02:25:33,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:25:33,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 02:25:33,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:25:33,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 02:25:33,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 02:25:33,775 INFO L87 Difference]: Start difference. First operand 3882 states and 5675 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:25:33,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:25:33,800 INFO L93 Difference]: Finished difference Result 4012 states and 5881 transitions. [2021-12-16 02:25:33,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 02:25:33,801 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-12-16 02:25:33,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:25:33,813 INFO L225 Difference]: With dead ends: 4012 [2021-12-16 02:25:33,813 INFO L226 Difference]: Without dead ends: 3944 [2021-12-16 02:25:33,814 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 [2021-12-16 02:25:33,815 INFO L933 BasicCegarLoop]: 1697 mSDtfsCounter, 1537 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1537 SdHoareTripleChecker+Valid, 1803 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:25:33,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1537 Valid, 1803 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 02:25:33,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3944 states. [2021-12-16 02:25:33,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3944 to 3942. [2021-12-16 02:25:33,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3942 states, 3940 states have (on average 1.464720812182741) internal successors, (5771), 3941 states have internal predecessors, (5771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:25:33,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3942 states to 3942 states and 5771 transitions. [2021-12-16 02:25:33,876 INFO L78 Accepts]: Start accepts. Automaton has 3942 states and 5771 transitions. Word has length 91 [2021-12-16 02:25:33,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:25:33,878 INFO L470 AbstractCegarLoop]: Abstraction has 3942 states and 5771 transitions. [2021-12-16 02:25:33,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:25:33,878 INFO L276 IsEmpty]: Start isEmpty. Operand 3942 states and 5771 transitions. [2021-12-16 02:25:33,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-16 02:25:33,879 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:25:33,879 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:25:33,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 02:25:33,880 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:25:33,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:25:33,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1564953708, now seen corresponding path program 1 times [2021-12-16 02:25:33,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:25:33,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665344921] [2021-12-16 02:25:33,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:25:33,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:25:33,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:25:33,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:25:33,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:25:33,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665344921] [2021-12-16 02:25:33,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665344921] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:25:33,930 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:25:33,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 02:25:33,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247048112] [2021-12-16 02:25:33,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:25:33,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 02:25:33,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:25:33,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 02:25:33,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 02:25:33,932 INFO L87 Difference]: Start difference. First operand 3942 states and 5771 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:25:33,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:25:33,964 INFO L93 Difference]: Finished difference Result 4186 states and 6159 transitions. [2021-12-16 02:25:33,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 02:25:33,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-12-16 02:25:33,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:25:33,978 INFO L225 Difference]: With dead ends: 4186 [2021-12-16 02:25:33,979 INFO L226 Difference]: Without dead ends: 4058 [2021-12-16 02:25:33,980 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 [2021-12-16 02:25:33,981 INFO L933 BasicCegarLoop]: 1692 mSDtfsCounter, 1533 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1533 SdHoareTripleChecker+Valid, 1802 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:25:33,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1533 Valid, 1802 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 02:25:33,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4058 states. [2021-12-16 02:25:34,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4058 to 4056. [2021-12-16 02:25:34,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4056 states, 4054 states have (on average 1.4681795757276763) internal successors, (5952), 4055 states have internal predecessors, (5952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:25:34,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4056 states to 4056 states and 5952 transitions. [2021-12-16 02:25:34,045 INFO L78 Accepts]: Start accepts. Automaton has 4056 states and 5952 transitions. Word has length 91 [2021-12-16 02:25:34,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:25:34,046 INFO L470 AbstractCegarLoop]: Abstraction has 4056 states and 5952 transitions. [2021-12-16 02:25:34,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:25:34,046 INFO L276 IsEmpty]: Start isEmpty. Operand 4056 states and 5952 transitions. [2021-12-16 02:25:34,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-16 02:25:34,092 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:25:34,092 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:25:34,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 02:25:34,093 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:25:34,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:25:34,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1479108296, now seen corresponding path program 1 times [2021-12-16 02:25:34,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:25:34,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398764296] [2021-12-16 02:25:34,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:25:34,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:25:34,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:25:34,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:25:34,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:25:34,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398764296] [2021-12-16 02:25:34,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398764296] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:25:34,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:25:34,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 02:25:34,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188563807] [2021-12-16 02:25:34,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:25:34,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 02:25:34,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:25:34,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 02:25:34,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 02:25:34,138 INFO L87 Difference]: Start difference. First operand 4056 states and 5952 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:25:34,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:25:34,172 INFO L93 Difference]: Finished difference Result 4516 states and 6682 transitions. [2021-12-16 02:25:34,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 02:25:34,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-12-16 02:25:34,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:25:34,184 INFO L225 Difference]: With dead ends: 4516 [2021-12-16 02:25:34,184 INFO L226 Difference]: Without dead ends: 4274 [2021-12-16 02:25:34,186 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 [2021-12-16 02:25:34,188 INFO L933 BasicCegarLoop]: 1687 mSDtfsCounter, 1529 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1529 SdHoareTripleChecker+Valid, 1801 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:25:34,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1529 Valid, 1801 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 02:25:34,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4274 states. [2021-12-16 02:25:34,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4274 to 4272. [2021-12-16 02:25:34,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4272 states, 4270 states have (on average 1.473536299765808) internal successors, (6292), 4271 states have internal predecessors, (6292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:25:34,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4272 states to 4272 states and 6292 transitions. [2021-12-16 02:25:34,267 INFO L78 Accepts]: Start accepts. Automaton has 4272 states and 6292 transitions. Word has length 91 [2021-12-16 02:25:34,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:25:34,267 INFO L470 AbstractCegarLoop]: Abstraction has 4272 states and 6292 transitions. [2021-12-16 02:25:34,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:25:34,267 INFO L276 IsEmpty]: Start isEmpty. Operand 4272 states and 6292 transitions. [2021-12-16 02:25:34,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-16 02:25:34,268 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:25:34,268 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:25:34,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 02:25:34,269 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:25:34,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:25:34,270 INFO L85 PathProgramCache]: Analyzing trace with hash 733525566, now seen corresponding path program 1 times [2021-12-16 02:25:34,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:25:34,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103009706] [2021-12-16 02:25:34,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:25:34,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:25:34,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:25:34,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:25:34,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:25:34,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103009706] [2021-12-16 02:25:34,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103009706] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:25:34,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:25:34,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 02:25:34,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589922734] [2021-12-16 02:25:34,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:25:34,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 02:25:34,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:25:34,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 02:25:34,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 02:25:34,324 INFO L87 Difference]: Start difference. First operand 4272 states and 6292 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:25:34,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:25:34,361 INFO L93 Difference]: Finished difference Result 5140 states and 7662 transitions. [2021-12-16 02:25:34,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 02:25:34,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-12-16 02:25:34,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:25:34,373 INFO L225 Difference]: With dead ends: 5140 [2021-12-16 02:25:34,374 INFO L226 Difference]: Without dead ends: 4682 [2021-12-16 02:25:34,376 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 [2021-12-16 02:25:34,377 INFO L933 BasicCegarLoop]: 1682 mSDtfsCounter, 1525 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1525 SdHoareTripleChecker+Valid, 1800 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:25:34,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1525 Valid, 1800 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 02:25:34,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4682 states. [2021-12-16 02:25:34,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4682 to 4680. [2021-12-16 02:25:34,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4680 states, 4678 states have (on average 1.4809747755451048) internal successors, (6928), 4679 states have internal predecessors, (6928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:25:34,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4680 states to 4680 states and 6928 transitions. [2021-12-16 02:25:34,461 INFO L78 Accepts]: Start accepts. Automaton has 4680 states and 6928 transitions. Word has length 91 [2021-12-16 02:25:34,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:25:34,462 INFO L470 AbstractCegarLoop]: Abstraction has 4680 states and 6928 transitions. [2021-12-16 02:25:34,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:25:34,462 INFO L276 IsEmpty]: Start isEmpty. Operand 4680 states and 6928 transitions. [2021-12-16 02:25:34,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-16 02:25:34,463 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:25:34,463 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:25:34,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 02:25:34,463 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:25:34,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:25:34,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1206505292, now seen corresponding path program 1 times [2021-12-16 02:25:34,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:25:34,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447287774] [2021-12-16 02:25:34,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:25:34,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:25:34,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:25:34,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:25:34,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:25:34,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447287774] [2021-12-16 02:25:34,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447287774] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:25:34,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:25:34,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 02:25:34,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745257645] [2021-12-16 02:25:34,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:25:34,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 02:25:34,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:25:34,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 02:25:34,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 02:25:34,514 INFO L87 Difference]: Start difference. First operand 4680 states and 6928 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:25:34,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:25:34,567 INFO L93 Difference]: Finished difference Result 6316 states and 9490 transitions. [2021-12-16 02:25:34,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 02:25:34,567 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-12-16 02:25:34,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:25:34,579 INFO L225 Difference]: With dead ends: 6316 [2021-12-16 02:25:34,579 INFO L226 Difference]: Without dead ends: 5450 [2021-12-16 02:25:34,581 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 [2021-12-16 02:25:34,583 INFO L933 BasicCegarLoop]: 1677 mSDtfsCounter, 1521 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 1799 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:25:34,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1521 Valid, 1799 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 02:25:34,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5450 states. [2021-12-16 02:25:34,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5450 to 5448. [2021-12-16 02:25:34,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5448 states, 5446 states have (on average 1.4895336026441426) internal successors, (8112), 5447 states have internal predecessors, (8112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:25:34,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5448 states to 5448 states and 8112 transitions. [2021-12-16 02:25:34,694 INFO L78 Accepts]: Start accepts. Automaton has 5448 states and 8112 transitions. Word has length 91 [2021-12-16 02:25:34,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:25:34,694 INFO L470 AbstractCegarLoop]: Abstraction has 5448 states and 8112 transitions. [2021-12-16 02:25:34,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:25:34,695 INFO L276 IsEmpty]: Start isEmpty. Operand 5448 states and 8112 transitions. [2021-12-16 02:25:34,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-16 02:25:34,696 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:25:34,696 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:25:34,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-16 02:25:34,699 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:25:34,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:25:34,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1494177322, now seen corresponding path program 1 times [2021-12-16 02:25:34,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:25:34,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186284317] [2021-12-16 02:25:34,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:25:34,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:25:34,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:25:34,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:25:34,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:25:34,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186284317] [2021-12-16 02:25:34,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186284317] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:25:34,769 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:25:34,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 02:25:34,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040042397] [2021-12-16 02:25:34,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:25:34,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 02:25:34,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:25:34,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 02:25:34,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-16 02:25:34,772 INFO L87 Difference]: Start difference. First operand 5448 states and 8112 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:25:35,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:25:35,394 INFO L93 Difference]: Finished difference Result 28324 states and 43742 transitions. [2021-12-16 02:25:35,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 02:25:35,395 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-12-16 02:25:35,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:25:35,450 INFO L225 Difference]: With dead ends: 28324 [2021-12-16 02:25:35,450 INFO L226 Difference]: Without dead ends: 26690 [2021-12-16 02:25:35,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2021-12-16 02:25:35,464 INFO L933 BasicCegarLoop]: 1597 mSDtfsCounter, 13389 mSDsluCounter, 1514 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13389 SdHoareTripleChecker+Valid, 3111 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 02:25:35,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13389 Valid, 3111 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 02:25:35,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26690 states. [2021-12-16 02:25:35,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26690 to 7080. [2021-12-16 02:25:35,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7080 states, 7078 states have (on average 1.4964679287934444) internal successors, (10592), 7079 states have internal predecessors, (10592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:25:35,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7080 states to 7080 states and 10592 transitions. [2021-12-16 02:25:35,748 INFO L78 Accepts]: Start accepts. Automaton has 7080 states and 10592 transitions. Word has length 91 [2021-12-16 02:25:35,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:25:35,748 INFO L470 AbstractCegarLoop]: Abstraction has 7080 states and 10592 transitions. [2021-12-16 02:25:35,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:25:35,749 INFO L276 IsEmpty]: Start isEmpty. Operand 7080 states and 10592 transitions. [2021-12-16 02:25:35,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-16 02:25:35,753 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:25:35,753 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:25:35,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-16 02:25:35,754 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:25:35,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:25:35,754 INFO L85 PathProgramCache]: Analyzing trace with hash -30360326, now seen corresponding path program 1 times [2021-12-16 02:25:35,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:25:35,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657651731] [2021-12-16 02:25:35,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:25:35,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:25:35,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:25:35,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:25:35,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:25:35,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657651731] [2021-12-16 02:25:35,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657651731] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:25:35,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:25:35,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 02:25:35,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696134415] [2021-12-16 02:25:35,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:25:35,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 02:25:35,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:25:35,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 02:25:35,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 02:25:35,793 INFO L87 Difference]: Start difference. First operand 7080 states and 10592 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:25:35,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:25:35,935 INFO L93 Difference]: Finished difference Result 11902 states and 18004 transitions. [2021-12-16 02:25:35,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 02:25:35,936 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-12-16 02:25:35,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:25:35,951 INFO L225 Difference]: With dead ends: 11902 [2021-12-16 02:25:35,951 INFO L226 Difference]: Without dead ends: 8636 [2021-12-16 02:25:35,957 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 [2021-12-16 02:25:35,957 INFO L933 BasicCegarLoop]: 1632 mSDtfsCounter, 1505 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1505 SdHoareTripleChecker+Valid, 1735 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:25:35,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1505 Valid, 1735 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 02:25:35,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8636 states. [2021-12-16 02:25:36,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8636 to 8634. [2021-12-16 02:25:36,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8634 states, 8632 states have (on average 1.497914735866543) internal successors, (12930), 8633 states have internal predecessors, (12930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:25:36,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8634 states to 8634 states and 12930 transitions. [2021-12-16 02:25:36,202 INFO L78 Accepts]: Start accepts. Automaton has 8634 states and 12930 transitions. Word has length 93 [2021-12-16 02:25:36,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:25:36,202 INFO L470 AbstractCegarLoop]: Abstraction has 8634 states and 12930 transitions. [2021-12-16 02:25:36,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:25:36,203 INFO L276 IsEmpty]: Start isEmpty. Operand 8634 states and 12930 transitions. [2021-12-16 02:25:36,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-16 02:25:36,205 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:25:36,205 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:25:36,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-16 02:25:36,206 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:25:36,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:25:36,206 INFO L85 PathProgramCache]: Analyzing trace with hash 36133186, now seen corresponding path program 1 times [2021-12-16 02:25:36,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:25:36,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137199705] [2021-12-16 02:25:36,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:25:36,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:25:36,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:25:36,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:25:36,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:25:36,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137199705] [2021-12-16 02:25:36,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137199705] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:25:36,397 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:25:36,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 02:25:36,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588092997] [2021-12-16 02:25:36,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:25:36,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 02:25:36,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:25:36,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 02:25:36,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-16 02:25:36,399 INFO L87 Difference]: Start difference. First operand 8634 states and 12930 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:25:36,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:25:36,762 INFO L93 Difference]: Finished difference Result 13454 states and 20292 transitions. [2021-12-16 02:25:36,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 02:25:36,762 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-12-16 02:25:36,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:25:36,778 INFO L225 Difference]: With dead ends: 13454 [2021-12-16 02:25:36,778 INFO L226 Difference]: Without dead ends: 8636 [2021-12-16 02:25:36,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2021-12-16 02:25:36,788 INFO L933 BasicCegarLoop]: 1643 mSDtfsCounter, 9450 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9450 SdHoareTripleChecker+Valid, 2273 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 02:25:36,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9450 Valid, 2273 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 02:25:36,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8636 states. [2021-12-16 02:25:36,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8636 to 8634. [2021-12-16 02:25:36,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8634 states, 8632 states have (on average 1.492354031510658) internal successors, (12882), 8633 states have internal predecessors, (12882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:25:36,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8634 states to 8634 states and 12882 transitions. [2021-12-16 02:25:36,971 INFO L78 Accepts]: Start accepts. Automaton has 8634 states and 12882 transitions. Word has length 93 [2021-12-16 02:25:36,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:25:36,972 INFO L470 AbstractCegarLoop]: Abstraction has 8634 states and 12882 transitions. [2021-12-16 02:25:36,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:25:36,972 INFO L276 IsEmpty]: Start isEmpty. Operand 8634 states and 12882 transitions. [2021-12-16 02:25:36,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-16 02:25:36,973 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:25:36,973 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:25:36,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-16 02:25:36,973 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:25:36,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:25:36,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1825047262, now seen corresponding path program 1 times [2021-12-16 02:25:36,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:25:36,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194893542] [2021-12-16 02:25:36,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:25:36,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:25:36,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:25:37,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:25:37,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:25:37,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194893542] [2021-12-16 02:25:37,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194893542] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:25:37,010 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:25:37,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 02:25:37,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197465473] [2021-12-16 02:25:37,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:25:37,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 02:25:37,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:25:37,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 02:25:37,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 02:25:37,011 INFO L87 Difference]: Start difference. First operand 8634 states and 12882 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:25:37,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:25:37,301 INFO L93 Difference]: Finished difference Result 17694 states and 26548 transitions. [2021-12-16 02:25:37,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 02:25:37,301 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-12-16 02:25:37,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:25:37,323 INFO L225 Difference]: With dead ends: 17694 [2021-12-16 02:25:37,323 INFO L226 Difference]: Without dead ends: 12876 [2021-12-16 02:25:37,331 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 [2021-12-16 02:25:37,332 INFO L933 BasicCegarLoop]: 1659 mSDtfsCounter, 1513 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:25:37,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1513 Valid, 1789 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 02:25:37,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12876 states. [2021-12-16 02:25:37,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12876 to 12874. [2021-12-16 02:25:37,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12874 states, 12872 states have (on average 1.4867930391547546) internal successors, (19138), 12873 states have internal predecessors, (19138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:25:37,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12874 states to 12874 states and 19138 transitions. [2021-12-16 02:25:37,671 INFO L78 Accepts]: Start accepts. Automaton has 12874 states and 19138 transitions. Word has length 93 [2021-12-16 02:25:37,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:25:37,672 INFO L470 AbstractCegarLoop]: Abstraction has 12874 states and 19138 transitions. [2021-12-16 02:25:37,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:25:37,672 INFO L276 IsEmpty]: Start isEmpty. Operand 12874 states and 19138 transitions. [2021-12-16 02:25:37,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-16 02:25:37,673 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:25:37,673 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:25:37,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-16 02:25:37,673 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:25:37,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:25:37,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1222412418, now seen corresponding path program 1 times [2021-12-16 02:25:37,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:25:37,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192983448] [2021-12-16 02:25:37,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:25:37,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:25:37,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:25:37,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:25:37,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:25:37,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192983448] [2021-12-16 02:25:37,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192983448] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:25:37,706 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:25:37,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 02:25:37,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110123066] [2021-12-16 02:25:37,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:25:37,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 02:25:37,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:25:37,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 02:25:37,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 02:25:37,708 INFO L87 Difference]: Start difference. First operand 12874 states and 19138 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:25:38,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:25:38,296 INFO L93 Difference]: Finished difference Result 29838 states and 44356 transitions. [2021-12-16 02:25:38,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 02:25:38,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-12-16 02:25:38,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:25:38,331 INFO L225 Difference]: With dead ends: 29838 [2021-12-16 02:25:38,331 INFO L226 Difference]: Without dead ends: 20780 [2021-12-16 02:25:38,346 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 [2021-12-16 02:25:38,346 INFO L933 BasicCegarLoop]: 1672 mSDtfsCounter, 1517 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1517 SdHoareTripleChecker+Valid, 1798 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:25:38,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1517 Valid, 1798 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 02:25:38,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20780 states. [2021-12-16 02:25:38,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20780 to 20778. [2021-12-16 02:25:38,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20778 states, 20776 states have (on average 1.4725644974971122) internal successors, (30594), 20777 states have internal predecessors, (30594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:25:39,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20778 states to 20778 states and 30594 transitions. [2021-12-16 02:25:39,010 INFO L78 Accepts]: Start accepts. Automaton has 20778 states and 30594 transitions. Word has length 93 [2021-12-16 02:25:39,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:25:39,010 INFO L470 AbstractCegarLoop]: Abstraction has 20778 states and 30594 transitions. [2021-12-16 02:25:39,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:25:39,010 INFO L276 IsEmpty]: Start isEmpty. Operand 20778 states and 30594 transitions. [2021-12-16 02:25:39,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-16 02:25:39,011 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:25:39,011 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:25:39,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-16 02:25:39,012 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:25:39,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:25:39,012 INFO L85 PathProgramCache]: Analyzing trace with hash 705405902, now seen corresponding path program 1 times [2021-12-16 02:25:39,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:25:39,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400019126] [2021-12-16 02:25:39,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:25:39,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:25:39,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:25:39,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:25:39,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:25:39,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400019126] [2021-12-16 02:25:39,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400019126] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:25:39,059 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:25:39,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 02:25:39,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565805004] [2021-12-16 02:25:39,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:25:39,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 02:25:39,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:25:39,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 02:25:39,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-16 02:25:39,060 INFO L87 Difference]: Start difference. First operand 20778 states and 30594 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:25:39,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:25:39,743 INFO L93 Difference]: Finished difference Result 37740 states and 55619 transitions. [2021-12-16 02:25:39,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 02:25:39,744 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-12-16 02:25:39,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:25:39,770 INFO L225 Difference]: With dead ends: 37740 [2021-12-16 02:25:39,771 INFO L226 Difference]: Without dead ends: 20778 [2021-12-16 02:25:39,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-16 02:25:39,786 INFO L933 BasicCegarLoop]: 1560 mSDtfsCounter, 4985 mSDsluCounter, 1528 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4985 SdHoareTripleChecker+Valid, 3088 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 02:25:39,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4985 Valid, 3088 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 02:25:39,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20778 states. [2021-12-16 02:25:40,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20778 to 20778. [2021-12-16 02:25:40,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20778 states, 20776 states have (on average 1.460242587601078) internal successors, (30338), 20777 states have internal predecessors, (30338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:25:40,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20778 states to 20778 states and 30338 transitions. [2021-12-16 02:25:40,404 INFO L78 Accepts]: Start accepts. Automaton has 20778 states and 30338 transitions. Word has length 94 [2021-12-16 02:25:40,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:25:40,404 INFO L470 AbstractCegarLoop]: Abstraction has 20778 states and 30338 transitions. [2021-12-16 02:25:40,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:25:40,405 INFO L276 IsEmpty]: Start isEmpty. Operand 20778 states and 30338 transitions. [2021-12-16 02:25:40,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-16 02:25:40,405 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:25:40,406 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:25:40,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-16 02:25:40,406 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:25:40,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:25:40,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1549411404, now seen corresponding path program 1 times [2021-12-16 02:25:40,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:25:40,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492824342] [2021-12-16 02:25:40,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:25:40,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:25:40,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:25:40,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:25:40,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:25:40,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492824342] [2021-12-16 02:25:40,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492824342] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:25:40,448 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:25:40,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 02:25:40,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406936530] [2021-12-16 02:25:40,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:25:40,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 02:25:40,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:25:40,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 02:25:40,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-16 02:25:40,449 INFO L87 Difference]: Start difference. First operand 20778 states and 30338 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:25:41,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:25:41,100 INFO L93 Difference]: Finished difference Result 37740 states and 55107 transitions. [2021-12-16 02:25:41,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 02:25:41,101 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-12-16 02:25:41,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:25:41,131 INFO L225 Difference]: With dead ends: 37740 [2021-12-16 02:25:41,132 INFO L226 Difference]: Without dead ends: 20778 [2021-12-16 02:25:41,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-16 02:25:41,153 INFO L933 BasicCegarLoop]: 1558 mSDtfsCounter, 4945 mSDsluCounter, 1525 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4945 SdHoareTripleChecker+Valid, 3083 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 02:25:41,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4945 Valid, 3083 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 02:25:41,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20778 states. [2021-12-16 02:25:41,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20778 to 20778. [2021-12-16 02:25:41,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20778 states, 20776 states have (on average 1.4510011551790527) internal successors, (30146), 20777 states have internal predecessors, (30146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:25:42,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20778 states to 20778 states and 30146 transitions. [2021-12-16 02:25:42,024 INFO L78 Accepts]: Start accepts. Automaton has 20778 states and 30146 transitions. Word has length 94 [2021-12-16 02:25:42,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:25:42,025 INFO L470 AbstractCegarLoop]: Abstraction has 20778 states and 30146 transitions. [2021-12-16 02:25:42,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:25:42,025 INFO L276 IsEmpty]: Start isEmpty. Operand 20778 states and 30146 transitions. [2021-12-16 02:25:42,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-16 02:25:42,026 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:25:42,026 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:25:42,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-16 02:25:42,026 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:25:42,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:25:42,027 INFO L85 PathProgramCache]: Analyzing trace with hash 847811530, now seen corresponding path program 1 times [2021-12-16 02:25:42,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:25:42,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618691635] [2021-12-16 02:25:42,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:25:42,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:25:42,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:25:42,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:25:42,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:25:42,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618691635] [2021-12-16 02:25:42,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618691635] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:25:42,095 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:25:42,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 02:25:42,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030643602] [2021-12-16 02:25:42,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:25:42,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 02:25:42,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:25:42,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 02:25:42,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-16 02:25:42,096 INFO L87 Difference]: Start difference. First operand 20778 states and 30146 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:25:43,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:25:43,243 INFO L93 Difference]: Finished difference Result 35277 states and 50796 transitions. [2021-12-16 02:25:43,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 02:25:43,244 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-12-16 02:25:43,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:25:43,287 INFO L225 Difference]: With dead ends: 35277 [2021-12-16 02:25:43,287 INFO L226 Difference]: Without dead ends: 35275 [2021-12-16 02:25:43,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-12-16 02:25:43,299 INFO L933 BasicCegarLoop]: 1633 mSDtfsCounter, 820 mSDsluCounter, 9257 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 820 SdHoareTripleChecker+Valid, 10890 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:25:43,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [820 Valid, 10890 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 02:25:43,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35275 states. [2021-12-16 02:25:44,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35275 to 21546. [2021-12-16 02:25:44,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21546 states, 21544 states have (on average 1.431953212031192) internal successors, (30850), 21545 states have internal predecessors, (30850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:25:44,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21546 states to 21546 states and 30850 transitions. [2021-12-16 02:25:44,213 INFO L78 Accepts]: Start accepts. Automaton has 21546 states and 30850 transitions. Word has length 94 [2021-12-16 02:25:44,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:25:44,213 INFO L470 AbstractCegarLoop]: Abstraction has 21546 states and 30850 transitions. [2021-12-16 02:25:44,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:25:44,214 INFO L276 IsEmpty]: Start isEmpty. Operand 21546 states and 30850 transitions. [2021-12-16 02:25:44,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-16 02:25:44,222 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:25:44,222 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-16 02:25:44,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-16 02:25:44,223 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:25:44,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:25:44,224 INFO L85 PathProgramCache]: Analyzing trace with hash 101873069, now seen corresponding path program 1 times [2021-12-16 02:25:44,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:25:44,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832986311] [2021-12-16 02:25:44,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:25:44,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:25:44,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:25:44,296 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-16 02:25:44,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:25:44,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832986311] [2021-12-16 02:25:44,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832986311] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:25:44,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:25:44,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 02:25:44,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967841951] [2021-12-16 02:25:44,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:25:44,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 02:25:44,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:25:44,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 02:25:44,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-16 02:25:44,298 INFO L87 Difference]: Start difference. First operand 21546 states and 30850 transitions. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:25:49,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:25:49,452 INFO L93 Difference]: Finished difference Result 149114 states and 212586 transitions. [2021-12-16 02:25:49,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 02:25:49,453 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 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 130 [2021-12-16 02:25:49,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:25:49,646 INFO L225 Difference]: With dead ends: 149114 [2021-12-16 02:25:49,646 INFO L226 Difference]: Without dead ends: 131384 [2021-12-16 02:25:49,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-12-16 02:25:49,681 INFO L933 BasicCegarLoop]: 1697 mSDtfsCounter, 10767 mSDsluCounter, 2392 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10767 SdHoareTripleChecker+Valid, 4089 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 02:25:49,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10767 Valid, 4089 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 02:25:49,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131384 states. [2021-12-16 02:25:52,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131384 to 39274. [2021-12-16 02:25:52,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39274 states, 39272 states have (on average 1.424373599511102) internal successors, (55938), 39273 states have internal predecessors, (55938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:25:52,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39274 states to 39274 states and 55938 transitions. [2021-12-16 02:25:52,486 INFO L78 Accepts]: Start accepts. Automaton has 39274 states and 55938 transitions. Word has length 130 [2021-12-16 02:25:52,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:25:52,487 INFO L470 AbstractCegarLoop]: Abstraction has 39274 states and 55938 transitions. [2021-12-16 02:25:52,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:25:52,487 INFO L276 IsEmpty]: Start isEmpty. Operand 39274 states and 55938 transitions. [2021-12-16 02:25:52,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-16 02:25:52,498 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:25:52,498 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-16 02:25:52,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-16 02:25:52,498 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:25:52,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:25:52,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1349380685, now seen corresponding path program 1 times [2021-12-16 02:25:52,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:25:52,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932294302] [2021-12-16 02:25:52,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:25:52,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:25:52,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:25:52,580 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-16 02:25:52,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:25:52,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932294302] [2021-12-16 02:25:52,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932294302] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:25:52,580 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:25:52,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 02:25:52,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551627582] [2021-12-16 02:25:52,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:25:52,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 02:25:52,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:25:52,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 02:25:52,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-16 02:25:52,583 INFO L87 Difference]: Start difference. First operand 39274 states and 55938 transitions. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:25:59,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:25:59,362 INFO L93 Difference]: Finished difference Result 166842 states and 237674 transitions. [2021-12-16 02:25:59,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 02:25:59,363 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 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 130 [2021-12-16 02:25:59,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:25:59,591 INFO L225 Difference]: With dead ends: 166842 [2021-12-16 02:25:59,591 INFO L226 Difference]: Without dead ends: 149112 [2021-12-16 02:25:59,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-12-16 02:25:59,631 INFO L933 BasicCegarLoop]: 1697 mSDtfsCounter, 10518 mSDsluCounter, 2466 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10518 SdHoareTripleChecker+Valid, 4163 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 02:25:59,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10518 Valid, 4163 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 02:25:59,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149112 states. [2021-12-16 02:26:03,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149112 to 65898. [2021-12-16 02:26:03,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65898 states, 65896 states have (on average 1.4175367245356318) internal successors, (93410), 65897 states have internal predecessors, (93410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:26:03,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65898 states to 65898 states and 93410 transitions. [2021-12-16 02:26:03,842 INFO L78 Accepts]: Start accepts. Automaton has 65898 states and 93410 transitions. Word has length 130 [2021-12-16 02:26:03,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:26:03,842 INFO L470 AbstractCegarLoop]: Abstraction has 65898 states and 93410 transitions. [2021-12-16 02:26:03,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:26:03,842 INFO L276 IsEmpty]: Start isEmpty. Operand 65898 states and 93410 transitions. [2021-12-16 02:26:03,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-16 02:26:03,853 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:26:03,853 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-16 02:26:03,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-16 02:26:03,853 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:26:03,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:26:03,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1476153629, now seen corresponding path program 1 times [2021-12-16 02:26:03,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:26:03,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86276596] [2021-12-16 02:26:03,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:26:03,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:26:03,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:26:03,928 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-16 02:26:03,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:26:03,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86276596] [2021-12-16 02:26:03,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86276596] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:26:03,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:26:03,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 02:26:03,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425020866] [2021-12-16 02:26:03,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:26:03,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 02:26:03,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:26:03,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 02:26:03,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-16 02:26:03,930 INFO L87 Difference]: Start difference. First operand 65898 states and 93410 transitions. Second operand has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:26:12,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:26:12,033 INFO L93 Difference]: Finished difference Result 184570 states and 262762 transitions. [2021-12-16 02:26:12,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 02:26:12,033 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 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 130 [2021-12-16 02:26:12,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:26:12,294 INFO L225 Difference]: With dead ends: 184570 [2021-12-16 02:26:12,294 INFO L226 Difference]: Without dead ends: 166840 [2021-12-16 02:26:12,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-12-16 02:26:12,340 INFO L933 BasicCegarLoop]: 1697 mSDtfsCounter, 10437 mSDsluCounter, 2516 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10437 SdHoareTripleChecker+Valid, 4213 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 02:26:12,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10437 Valid, 4213 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 02:26:12,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166840 states.