./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label07.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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.8.ufo.UNBOUNDED.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 4d62395951f99c0a3c43b690318a4d5480f589d72fceef9ee8ca741a4c7ef736 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 02:28:38,641 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 02:28:38,644 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 02:28:38,691 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 02:28:38,691 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 02:28:38,695 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 02:28:38,696 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 02:28:38,701 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 02:28:38,703 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 02:28:38,707 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 02:28:38,708 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 02:28:38,709 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 02:28:38,709 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 02:28:38,711 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 02:28:38,713 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 02:28:38,718 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 02:28:38,718 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 02:28:38,719 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 02:28:38,721 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 02:28:38,726 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 02:28:38,728 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 02:28:38,729 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 02:28:38,730 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 02:28:38,732 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 02:28:38,736 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 02:28:38,736 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 02:28:38,737 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 02:28:38,739 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 02:28:38,739 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 02:28:38,740 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 02:28:38,740 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 02:28:38,741 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 02:28:38,742 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 02:28:38,743 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 02:28:38,744 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 02:28:38,744 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 02:28:38,745 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 02:28:38,745 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 02:28:38,746 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 02:28:38,747 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 02:28:38,748 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 02:28:38,752 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-28 02:28:38,784 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 02:28:38,784 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 02:28:38,785 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 02:28:38,786 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 02:28:38,786 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 02:28:38,787 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 02:28:38,788 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 02:28:38,788 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 02:28:38,788 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 02:28:38,788 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 02:28:38,789 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 02:28:38,789 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 02:28:38,790 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 02:28:38,790 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 02:28:38,790 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 02:28:38,790 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 02:28:38,790 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 02:28:38,790 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 02:28:38,791 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 02:28:38,791 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 02:28:38,791 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 02:28:38,791 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 02:28:38,791 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 02:28:38,792 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 02:28:38,792 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 02:28:38,792 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 02:28:38,792 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 02:28:38,792 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 02:28:38,792 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 02:28:38,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 02:28:38,793 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 02:28:38,793 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 02:28:38,793 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 02:28:38,794 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d62395951f99c0a3c43b690318a4d5480f589d72fceef9ee8ca741a4c7ef736 [2021-12-28 02:28:39,094 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 02:28:39,119 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 02:28:39,123 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 02:28:39,124 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 02:28:39,124 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 02:28:39,126 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label07.c [2021-12-28 02:28:39,192 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93b9862b7/8d79a4367f674f768eb65c136752ee6d/FLAGf95491bc7 [2021-12-28 02:28:39,903 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 02:28:39,904 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label07.c [2021-12-28 02:28:39,930 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93b9862b7/8d79a4367f674f768eb65c136752ee6d/FLAGf95491bc7 [2021-12-28 02:28:40,027 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93b9862b7/8d79a4367f674f768eb65c136752ee6d [2021-12-28 02:28:40,029 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 02:28:40,030 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 02:28:40,032 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 02:28:40,032 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 02:28:40,034 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 02:28:40,035 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 02:28:40" (1/1) ... [2021-12-28 02:28:40,036 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12c08fcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:28:40, skipping insertion in model container [2021-12-28 02:28:40,036 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 02:28:40" (1/1) ... [2021-12-28 02:28:40,042 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 02:28:40,161 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 02:28:40,535 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.8.ufo.UNBOUNDED.pals+Problem12_label07.c[26888,26901] [2021-12-28 02:28:40,550 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.8.ufo.UNBOUNDED.pals+Problem12_label07.c[27730,27743] [2021-12-28 02:28:41,131 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 02:28:41,144 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 02:28:41,196 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.8.ufo.UNBOUNDED.pals+Problem12_label07.c[26888,26901] [2021-12-28 02:28:41,201 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.8.ufo.UNBOUNDED.pals+Problem12_label07.c[27730,27743] [2021-12-28 02:28:41,627 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 02:28:41,655 INFO L208 MainTranslator]: Completed translation [2021-12-28 02:28:41,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:28:41 WrapperNode [2021-12-28 02:28:41,656 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 02:28:41,657 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 02:28:41,657 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 02:28:41,658 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 02:28:41,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:28:41" (1/1) ... [2021-12-28 02:28:41,725 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:28:41" (1/1) ... [2021-12-28 02:28:42,143 INFO L137 Inliner]: procedures = 40, calls = 25, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 5279 [2021-12-28 02:28:42,143 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 02:28:42,145 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 02:28:42,145 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 02:28:42,145 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 02:28:42,152 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:28:41" (1/1) ... [2021-12-28 02:28:42,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:28:41" (1/1) ... [2021-12-28 02:28:42,259 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:28:41" (1/1) ... [2021-12-28 02:28:42,260 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:28:41" (1/1) ... [2021-12-28 02:28:42,400 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:28:41" (1/1) ... [2021-12-28 02:28:42,431 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:28:41" (1/1) ... [2021-12-28 02:28:42,461 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:28:41" (1/1) ... [2021-12-28 02:28:42,520 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 02:28:42,522 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 02:28:42,523 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 02:28:42,523 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 02:28:42,524 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:28:41" (1/1) ... [2021-12-28 02:28:42,531 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 02:28:42,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 02:28:42,561 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) [2021-12-28 02:28:42,587 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 [2021-12-28 02:28:42,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 02:28:42,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 02:28:42,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 02:28:42,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 02:28:42,795 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 02:28:42,796 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 02:28:46,365 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 02:28:46,382 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 02:28:46,383 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-28 02:28:46,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 02:28:46 BoogieIcfgContainer [2021-12-28 02:28:46,387 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 02:28:46,388 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 02:28:46,388 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 02:28:46,391 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 02:28:46,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 02:28:40" (1/3) ... [2021-12-28 02:28:46,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ea88644 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 02:28:46, skipping insertion in model container [2021-12-28 02:28:46,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:28:41" (2/3) ... [2021-12-28 02:28:46,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ea88644 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 02:28:46, skipping insertion in model container [2021-12-28 02:28:46,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 02:28:46" (3/3) ... [2021-12-28 02:28:46,394 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label07.c [2021-12-28 02:28:46,399 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 02:28:46,399 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-28 02:28:46,445 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 02:28:46,451 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 [2021-12-28 02:28:46,452 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-28 02:28:46,483 INFO L276 IsEmpty]: Start isEmpty. Operand has 965 states, 962 states have (on average 1.8960498960498962) internal successors, (1824), 964 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:28:46,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-28 02:28:46,489 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:28:46,489 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:28:46,490 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:28:46,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:28:46,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1816105685, now seen corresponding path program 1 times [2021-12-28 02:28:46,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:28:46,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930734467] [2021-12-28 02:28:46,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:28:46,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:28:46,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:28:46,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:28:46,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:28:46,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930734467] [2021-12-28 02:28:46,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930734467] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:28:46,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:28:46,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 02:28:46,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419512616] [2021-12-28 02:28:46,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:28:46,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 02:28:46,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:28:46,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 02:28:46,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 02:28:46,738 INFO L87 Difference]: Start difference. First operand has 965 states, 962 states have (on average 1.8960498960498962) internal successors, (1824), 964 states have internal predecessors, (1824), 0 states have call successors, (0), 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) [2021-12-28 02:28:50,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:28:50,123 INFO L93 Difference]: Finished difference Result 2616 states and 5018 transitions. [2021-12-28 02:28:50,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 02:28:50,126 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 [2021-12-28 02:28:50,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:28:50,147 INFO L225 Difference]: With dead ends: 2616 [2021-12-28 02:28:50,148 INFO L226 Difference]: Without dead ends: 1650 [2021-12-28 02:28:50,155 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 [2021-12-28 02:28:50,161 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 1105 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2337 mSolverCounterSat, 1058 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1105 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 3395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1058 IncrementalHoareTripleChecker+Valid, 2337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-12-28 02:28:50,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1105 Valid, 356 Invalid, 3395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1058 Valid, 2337 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-12-28 02:28:50,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1650 states. [2021-12-28 02:28:50,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1650 to 1650. [2021-12-28 02:28:50,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1650 states, 1648 states have (on average 1.8604368932038835) internal successors, (3066), 1649 states have internal predecessors, (3066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:28:50,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1650 states to 1650 states and 3066 transitions. [2021-12-28 02:28:50,286 INFO L78 Accepts]: Start accepts. Automaton has 1650 states and 3066 transitions. Word has length 7 [2021-12-28 02:28:50,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:28:50,286 INFO L470 AbstractCegarLoop]: Abstraction has 1650 states and 3066 transitions. [2021-12-28 02:28:50,287 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) [2021-12-28 02:28:50,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1650 states and 3066 transitions. [2021-12-28 02:28:50,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-28 02:28:50,289 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:28:50,289 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] [2021-12-28 02:28:50,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 02:28:50,290 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:28:50,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:28:50,291 INFO L85 PathProgramCache]: Analyzing trace with hash 2117945689, now seen corresponding path program 1 times [2021-12-28 02:28:50,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:28:50,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809403286] [2021-12-28 02:28:50,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:28:50,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:28:50,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:28:50,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:28:50,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:28:50,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809403286] [2021-12-28 02:28:50,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809403286] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:28:50,406 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:28:50,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 02:28:50,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228090061] [2021-12-28 02:28:50,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:28:50,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 02:28:50,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:28:50,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 02:28:50,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 02:28:50,413 INFO L87 Difference]: Start difference. First operand 1650 states and 3066 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:28:50,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:28:50,509 INFO L93 Difference]: Finished difference Result 1732 states and 3194 transitions. [2021-12-28 02:28:50,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 02:28:50,510 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2021-12-28 02:28:50,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:28:50,517 INFO L225 Difference]: With dead ends: 1732 [2021-12-28 02:28:50,518 INFO L226 Difference]: Without dead ends: 1650 [2021-12-28 02:28:50,519 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 [2021-12-28 02:28:50,520 INFO L933 BasicCegarLoop]: 1689 mSDtfsCounter, 3 mSDsluCounter, 5003 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6692 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:28:50,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 6692 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:28:50,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1650 states. [2021-12-28 02:28:50,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1650 to 1650. [2021-12-28 02:28:50,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1650 states, 1648 states have (on average 1.8234223300970873) internal successors, (3005), 1649 states have internal predecessors, (3005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:28:50,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1650 states to 1650 states and 3005 transitions. [2021-12-28 02:28:50,559 INFO L78 Accepts]: Start accepts. Automaton has 1650 states and 3005 transitions. Word has length 46 [2021-12-28 02:28:50,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:28:50,559 INFO L470 AbstractCegarLoop]: Abstraction has 1650 states and 3005 transitions. [2021-12-28 02:28:50,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:28:50,560 INFO L276 IsEmpty]: Start isEmpty. Operand 1650 states and 3005 transitions. [2021-12-28 02:28:50,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-12-28 02:28:50,562 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:28:50,563 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] [2021-12-28 02:28:50,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 02:28:50,563 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:28:50,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:28:50,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1422063224, now seen corresponding path program 1 times [2021-12-28 02:28:50,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:28:50,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482449740] [2021-12-28 02:28:50,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:28:50,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:28:50,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:28:50,689 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:28:50,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:28:50,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482449740] [2021-12-28 02:28:50,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482449740] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:28:50,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:28:50,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 02:28:50,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607329614] [2021-12-28 02:28:50,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:28:50,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 02:28:50,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:28:50,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 02:28:50,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 02:28:50,693 INFO L87 Difference]: Start difference. First operand 1650 states and 3005 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) [2021-12-28 02:28:53,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:28:53,849 INFO L93 Difference]: Finished difference Result 4658 states and 8629 transitions. [2021-12-28 02:28:53,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 02:28:53,850 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 [2021-12-28 02:28:53,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:28:53,863 INFO L225 Difference]: With dead ends: 4658 [2021-12-28 02:28:53,864 INFO L226 Difference]: Without dead ends: 3154 [2021-12-28 02:28:53,867 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 [2021-12-28 02:28:53,868 INFO L933 BasicCegarLoop]: 538 mSDtfsCounter, 1108 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1108 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 2859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:28:53,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1108 Valid, 545 Invalid, 2859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-12-28 02:28:53,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3154 states. [2021-12-28 02:28:53,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3154 to 3152. [2021-12-28 02:28:53,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3152 states, 3150 states have (on average 1.6387301587301588) internal successors, (5162), 3151 states have internal predecessors, (5162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:28:53,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3152 states to 3152 states and 5162 transitions. [2021-12-28 02:28:53,944 INFO L78 Accepts]: Start accepts. Automaton has 3152 states and 5162 transitions. Word has length 80 [2021-12-28 02:28:53,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:28:53,944 INFO L470 AbstractCegarLoop]: Abstraction has 3152 states and 5162 transitions. [2021-12-28 02:28:53,945 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) [2021-12-28 02:28:53,945 INFO L276 IsEmpty]: Start isEmpty. Operand 3152 states and 5162 transitions. [2021-12-28 02:28:53,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-28 02:28:53,947 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:28:53,947 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:28:53,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 02:28:53,948 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:28:53,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:28:53,949 INFO L85 PathProgramCache]: Analyzing trace with hash 315323888, now seen corresponding path program 1 times [2021-12-28 02:28:53,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:28:53,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513107795] [2021-12-28 02:28:53,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:28:53,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:28:53,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:28:54,094 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:28:54,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:28:54,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513107795] [2021-12-28 02:28:54,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513107795] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:28:54,095 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:28:54,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 02:28:54,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711493578] [2021-12-28 02:28:54,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:28:54,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 02:28:54,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:28:54,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 02:28:54,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 02:28:54,098 INFO L87 Difference]: Start difference. First operand 3152 states and 5162 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:28:59,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:28:59,089 INFO L93 Difference]: Finished difference Result 8411 states and 13620 transitions. [2021-12-28 02:28:59,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 02:28:59,091 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-12-28 02:28:59,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:28:59,115 INFO L225 Difference]: With dead ends: 8411 [2021-12-28 02:28:59,116 INFO L226 Difference]: Without dead ends: 5405 [2021-12-28 02:28:59,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 02:28:59,124 INFO L933 BasicCegarLoop]: 528 mSDtfsCounter, 2535 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 4998 mSolverCounterSat, 851 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2535 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 5849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 851 IncrementalHoareTripleChecker+Valid, 4998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-12-28 02:28:59,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2535 Valid, 544 Invalid, 5849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [851 Valid, 4998 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-12-28 02:28:59,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5405 states. [2021-12-28 02:28:59,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5405 to 5405. [2021-12-28 02:28:59,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5405 states, 5403 states have (on average 1.5056450120303535) internal successors, (8135), 5404 states have internal predecessors, (8135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:28:59,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5405 states to 5405 states and 8135 transitions. [2021-12-28 02:28:59,240 INFO L78 Accepts]: Start accepts. Automaton has 5405 states and 8135 transitions. Word has length 93 [2021-12-28 02:28:59,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:28:59,241 INFO L470 AbstractCegarLoop]: Abstraction has 5405 states and 8135 transitions. [2021-12-28 02:28:59,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:28:59,241 INFO L276 IsEmpty]: Start isEmpty. Operand 5405 states and 8135 transitions. [2021-12-28 02:28:59,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-28 02:28:59,243 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:28:59,243 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:28:59,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 02:28:59,243 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:28:59,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:28:59,244 INFO L85 PathProgramCache]: Analyzing trace with hash 211182729, now seen corresponding path program 1 times [2021-12-28 02:28:59,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:28:59,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385221796] [2021-12-28 02:28:59,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:28:59,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:28:59,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:28:59,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:28:59,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:28:59,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385221796] [2021-12-28 02:28:59,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385221796] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:28:59,352 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:28:59,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 02:28:59,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603077123] [2021-12-28 02:28:59,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:28:59,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 02:28:59,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:28:59,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 02:28:59,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 02:28:59,354 INFO L87 Difference]: Start difference. First operand 5405 states and 8135 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:28:59,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:28:59,395 INFO L93 Difference]: Finished difference Result 5555 states and 8373 transitions. [2021-12-28 02:28:59,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 02:28:59,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-12-28 02:28:59,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:28:59,418 INFO L225 Difference]: With dead ends: 5555 [2021-12-28 02:28:59,418 INFO L226 Difference]: Without dead ends: 5477 [2021-12-28 02:28:59,421 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 [2021-12-28 02:28:59,424 INFO L933 BasicCegarLoop]: 1724 mSDtfsCounter, 1549 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 1850 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 [2021-12-28 02:28:59,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1549 Valid, 1850 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:28:59,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5477 states. [2021-12-28 02:28:59,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5477 to 5475. [2021-12-28 02:28:59,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5475 states, 5473 states have (on average 1.5068518180157136) internal successors, (8247), 5474 states have internal predecessors, (8247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:28:59,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5475 states to 5475 states and 8247 transitions. [2021-12-28 02:28:59,537 INFO L78 Accepts]: Start accepts. Automaton has 5475 states and 8247 transitions. Word has length 106 [2021-12-28 02:28:59,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:28:59,538 INFO L470 AbstractCegarLoop]: Abstraction has 5475 states and 8247 transitions. [2021-12-28 02:28:59,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:28:59,540 INFO L276 IsEmpty]: Start isEmpty. Operand 5475 states and 8247 transitions. [2021-12-28 02:28:59,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-28 02:28:59,546 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:28:59,547 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:28:59,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 02:28:59,548 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:28:59,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:28:59,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1458691583, now seen corresponding path program 1 times [2021-12-28 02:28:59,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:28:59,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515115166] [2021-12-28 02:28:59,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:28:59,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:28:59,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:28:59,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:28:59,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:28:59,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515115166] [2021-12-28 02:28:59,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515115166] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:28:59,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:28:59,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 02:28:59,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847141679] [2021-12-28 02:28:59,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:28:59,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 02:28:59,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:28:59,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 02:28:59,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 02:28:59,672 INFO L87 Difference]: Start difference. First operand 5475 states and 8247 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:28:59,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:28:59,724 INFO L93 Difference]: Finished difference Result 5759 states and 8699 transitions. [2021-12-28 02:28:59,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 02:28:59,725 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-12-28 02:28:59,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:28:59,753 INFO L225 Difference]: With dead ends: 5759 [2021-12-28 02:28:59,753 INFO L226 Difference]: Without dead ends: 5611 [2021-12-28 02:28:59,757 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 [2021-12-28 02:28:59,761 INFO L933 BasicCegarLoop]: 1719 mSDtfsCounter, 1545 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1545 SdHoareTripleChecker+Valid, 1849 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 [2021-12-28 02:28:59,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1545 Valid, 1849 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:28:59,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5611 states. [2021-12-28 02:28:59,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5611 to 5609. [2021-12-28 02:28:59,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5609 states, 5607 states have (on average 1.5088282504012842) internal successors, (8460), 5608 states have internal predecessors, (8460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:28:59,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5609 states to 5609 states and 8460 transitions. [2021-12-28 02:28:59,877 INFO L78 Accepts]: Start accepts. Automaton has 5609 states and 8460 transitions. Word has length 106 [2021-12-28 02:28:59,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:28:59,878 INFO L470 AbstractCegarLoop]: Abstraction has 5609 states and 8460 transitions. [2021-12-28 02:28:59,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:28:59,878 INFO L276 IsEmpty]: Start isEmpty. Operand 5609 states and 8460 transitions. [2021-12-28 02:28:59,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-28 02:28:59,880 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:28:59,880 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:28:59,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 02:28:59,880 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:28:59,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:28:59,881 INFO L85 PathProgramCache]: Analyzing trace with hash 717259381, now seen corresponding path program 1 times [2021-12-28 02:28:59,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:28:59,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236763499] [2021-12-28 02:28:59,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:28:59,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:28:59,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:28:59,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:28:59,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:28:59,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236763499] [2021-12-28 02:28:59,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236763499] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:28:59,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:28:59,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 02:28:59,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024813368] [2021-12-28 02:28:59,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:28:59,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 02:28:59,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:28:59,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 02:28:59,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 02:28:59,984 INFO L87 Difference]: Start difference. First operand 5609 states and 8460 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:29:00,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:29:00,036 INFO L93 Difference]: Finished difference Result 6149 states and 9318 transitions. [2021-12-28 02:29:00,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 02:29:00,037 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-12-28 02:29:00,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:29:00,052 INFO L225 Difference]: With dead ends: 6149 [2021-12-28 02:29:00,052 INFO L226 Difference]: Without dead ends: 5867 [2021-12-28 02:29:00,055 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 [2021-12-28 02:29:00,056 INFO L933 BasicCegarLoop]: 1714 mSDtfsCounter, 1541 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1541 SdHoareTripleChecker+Valid, 1848 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 [2021-12-28 02:29:00,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1541 Valid, 1848 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:29:00,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5867 states. [2021-12-28 02:29:00,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5867 to 5865. [2021-12-28 02:29:00,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5865 states, 5863 states have (on average 1.5118539996588778) internal successors, (8864), 5864 states have internal predecessors, (8864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:29:00,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5865 states to 5865 states and 8864 transitions. [2021-12-28 02:29:00,186 INFO L78 Accepts]: Start accepts. Automaton has 5865 states and 8864 transitions. Word has length 106 [2021-12-28 02:29:00,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:29:00,187 INFO L470 AbstractCegarLoop]: Abstraction has 5865 states and 8864 transitions. [2021-12-28 02:29:00,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:29:00,187 INFO L276 IsEmpty]: Start isEmpty. Operand 5865 states and 8864 transitions. [2021-12-28 02:29:00,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-28 02:29:00,188 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:29:00,188 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:29:00,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 02:29:00,189 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:29:00,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:29:00,190 INFO L85 PathProgramCache]: Analyzing trace with hash -28323349, now seen corresponding path program 1 times [2021-12-28 02:29:00,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:29:00,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572049465] [2021-12-28 02:29:00,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:29:00,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:29:00,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:00,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:29:00,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:29:00,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572049465] [2021-12-28 02:29:00,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572049465] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:29:00,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:29:00,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 02:29:00,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687646434] [2021-12-28 02:29:00,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:29:00,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 02:29:00,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:29:00,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 02:29:00,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 02:29:00,267 INFO L87 Difference]: Start difference. First operand 5865 states and 8864 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:29:00,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:29:00,338 INFO L93 Difference]: Finished difference Result 6893 states and 10490 transitions. [2021-12-28 02:29:00,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 02:29:00,339 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-12-28 02:29:00,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:29:00,350 INFO L225 Difference]: With dead ends: 6893 [2021-12-28 02:29:00,350 INFO L226 Difference]: Without dead ends: 6355 [2021-12-28 02:29:00,353 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 [2021-12-28 02:29:00,354 INFO L933 BasicCegarLoop]: 1709 mSDtfsCounter, 1537 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1537 SdHoareTripleChecker+Valid, 1847 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 [2021-12-28 02:29:00,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1537 Valid, 1847 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:29:00,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6355 states. [2021-12-28 02:29:00,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6355 to 6353. [2021-12-28 02:29:00,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6353 states, 6351 states have (on average 1.5159817351598173) internal successors, (9628), 6352 states have internal predecessors, (9628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:29:00,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6353 states to 6353 states and 9628 transitions. [2021-12-28 02:29:00,473 INFO L78 Accepts]: Start accepts. Automaton has 6353 states and 9628 transitions. Word has length 106 [2021-12-28 02:29:00,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:29:00,473 INFO L470 AbstractCegarLoop]: Abstraction has 6353 states and 9628 transitions. [2021-12-28 02:29:00,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:29:00,474 INFO L276 IsEmpty]: Start isEmpty. Operand 6353 states and 9628 transitions. [2021-12-28 02:29:00,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-28 02:29:00,475 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:29:00,475 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:29:00,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-28 02:29:00,475 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:29:00,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:29:00,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1968354207, now seen corresponding path program 1 times [2021-12-28 02:29:00,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:29:00,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113285817] [2021-12-28 02:29:00,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:29:00,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:29:00,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:00,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:29:00,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:29:00,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113285817] [2021-12-28 02:29:00,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113285817] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:29:00,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:29:00,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 02:29:00,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202639017] [2021-12-28 02:29:00,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:29:00,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 02:29:00,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:29:00,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 02:29:00,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 02:29:00,531 INFO L87 Difference]: Start difference. First operand 6353 states and 9628 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:29:00,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:29:00,625 INFO L93 Difference]: Finished difference Result 8309 states and 12702 transitions. [2021-12-28 02:29:00,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 02:29:00,626 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-12-28 02:29:00,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:29:00,638 INFO L225 Difference]: With dead ends: 8309 [2021-12-28 02:29:00,638 INFO L226 Difference]: Without dead ends: 7283 [2021-12-28 02:29:00,642 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 [2021-12-28 02:29:00,642 INFO L933 BasicCegarLoop]: 1704 mSDtfsCounter, 1533 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1533 SdHoareTripleChecker+Valid, 1846 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 [2021-12-28 02:29:00,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1533 Valid, 1846 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:29:00,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7283 states. [2021-12-28 02:29:00,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7283 to 7281. [2021-12-28 02:29:00,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7281 states, 7279 states have (on average 1.52053853551312) internal successors, (11068), 7280 states have internal predecessors, (11068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:29:00,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7281 states to 7281 states and 11068 transitions. [2021-12-28 02:29:00,794 INFO L78 Accepts]: Start accepts. Automaton has 7281 states and 11068 transitions. Word has length 106 [2021-12-28 02:29:00,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:29:00,795 INFO L470 AbstractCegarLoop]: Abstraction has 7281 states and 11068 transitions. [2021-12-28 02:29:00,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:29:00,795 INFO L276 IsEmpty]: Start isEmpty. Operand 7281 states and 11068 transitions. [2021-12-28 02:29:00,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-28 02:29:00,796 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:29:00,797 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:29:00,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-28 02:29:00,797 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:29:00,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:29:00,798 INFO L85 PathProgramCache]: Analyzing trace with hash 732328407, now seen corresponding path program 1 times [2021-12-28 02:29:00,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:29:00,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47485551] [2021-12-28 02:29:00,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:29:00,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:29:00,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:00,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:29:00,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:29:00,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47485551] [2021-12-28 02:29:00,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47485551] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:29:00,844 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:29:00,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 02:29:00,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590147663] [2021-12-28 02:29:00,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:29:00,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 02:29:00,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:29:00,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 02:29:00,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 02:29:00,846 INFO L87 Difference]: Start difference. First operand 7281 states and 11068 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:29:01,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:29:01,082 INFO L93 Difference]: Finished difference Result 10997 states and 16862 transitions. [2021-12-28 02:29:01,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 02:29:01,082 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-12-28 02:29:01,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:29:01,099 INFO L225 Difference]: With dead ends: 10997 [2021-12-28 02:29:01,100 INFO L226 Difference]: Without dead ends: 9043 [2021-12-28 02:29:01,105 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 [2021-12-28 02:29:01,106 INFO L933 BasicCegarLoop]: 1699 mSDtfsCounter, 1529 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1529 SdHoareTripleChecker+Valid, 1845 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 [2021-12-28 02:29:01,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1529 Valid, 1845 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:29:01,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9043 states. [2021-12-28 02:29:01,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9043 to 9041. [2021-12-28 02:29:01,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9041 states, 9039 states have (on average 1.5236198694545857) internal successors, (13772), 9040 states have internal predecessors, (13772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:29:01,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9041 states to 9041 states and 13772 transitions. [2021-12-28 02:29:01,349 INFO L78 Accepts]: Start accepts. Automaton has 9041 states and 13772 transitions. Word has length 106 [2021-12-28 02:29:01,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:29:01,349 INFO L470 AbstractCegarLoop]: Abstraction has 9041 states and 13772 transitions. [2021-12-28 02:29:01,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:29:01,350 INFO L276 IsEmpty]: Start isEmpty. Operand 9041 states and 13772 transitions. [2021-12-28 02:29:01,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-28 02:29:01,351 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:29:01,351 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:29:01,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-28 02:29:01,351 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:29:01,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:29:01,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1070121549, now seen corresponding path program 1 times [2021-12-28 02:29:01,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:29:01,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531816812] [2021-12-28 02:29:01,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:29:01,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:29:01,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:01,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:29:01,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:29:01,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531816812] [2021-12-28 02:29:01,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531816812] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:29:01,403 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:29:01,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 02:29:01,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801547861] [2021-12-28 02:29:01,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:29:01,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 02:29:01,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:29:01,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 02:29:01,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 02:29:01,405 INFO L87 Difference]: Start difference. First operand 9041 states and 13772 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:29:01,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:29:01,703 INFO L93 Difference]: Finished difference Result 16085 states and 24654 transitions. [2021-12-28 02:29:01,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 02:29:01,703 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-12-28 02:29:01,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:29:01,732 INFO L225 Difference]: With dead ends: 16085 [2021-12-28 02:29:01,732 INFO L226 Difference]: Without dead ends: 12371 [2021-12-28 02:29:01,742 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 [2021-12-28 02:29:01,743 INFO L933 BasicCegarLoop]: 1694 mSDtfsCounter, 1525 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1525 SdHoareTripleChecker+Valid, 1844 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 [2021-12-28 02:29:01,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1525 Valid, 1844 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:29:01,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12371 states. [2021-12-28 02:29:02,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12371 to 12369. [2021-12-28 02:29:02,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12369 states, 12367 states have (on average 1.5224387482817174) internal successors, (18828), 12368 states have internal predecessors, (18828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:29:02,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12369 states to 12369 states and 18828 transitions. [2021-12-28 02:29:02,198 INFO L78 Accepts]: Start accepts. Automaton has 12369 states and 18828 transitions. Word has length 106 [2021-12-28 02:29:02,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:29:02,198 INFO L470 AbstractCegarLoop]: Abstraction has 12369 states and 18828 transitions. [2021-12-28 02:29:02,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:29:02,199 INFO L276 IsEmpty]: Start isEmpty. Operand 12369 states and 18828 transitions. [2021-12-28 02:29:02,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-28 02:29:02,200 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:29:02,200 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:29:02,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-28 02:29:02,200 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:29:02,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:29:02,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1478760321, now seen corresponding path program 1 times [2021-12-28 02:29:02,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:29:02,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398319726] [2021-12-28 02:29:02,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:29:02,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:29:02,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:02,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:29:02,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:29:02,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398319726] [2021-12-28 02:29:02,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398319726] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:29:02,326 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:29:02,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-28 02:29:02,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388895210] [2021-12-28 02:29:02,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:29:02,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-28 02:29:02,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:29:02,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-28 02:29:02,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-28 02:29:02,329 INFO L87 Difference]: Start difference. First operand 12369 states and 18828 transitions. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:29:06,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:29:06,870 INFO L93 Difference]: Finished difference Result 125041 states and 191900 transitions. [2021-12-28 02:29:06,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-28 02:29:06,871 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-12-28 02:29:06,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:29:07,190 INFO L225 Difference]: With dead ends: 125041 [2021-12-28 02:29:07,191 INFO L226 Difference]: Without dead ends: 117999 [2021-12-28 02:29:07,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2021-12-28 02:29:07,243 INFO L933 BasicCegarLoop]: 1626 mSDtfsCounter, 15488 mSDsluCounter, 3243 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15488 SdHoareTripleChecker+Valid, 4869 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 02:29:07,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15488 Valid, 4869 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 02:29:07,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117999 states. [2021-12-28 02:29:09,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117999 to 19409. [2021-12-28 02:29:09,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19409 states, 19407 states have (on average 1.5142989642912352) internal successors, (29388), 19408 states have internal predecessors, (29388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:29:09,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19409 states to 19409 states and 29388 transitions. [2021-12-28 02:29:09,138 INFO L78 Accepts]: Start accepts. Automaton has 19409 states and 29388 transitions. Word has length 106 [2021-12-28 02:29:09,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:29:09,138 INFO L470 AbstractCegarLoop]: Abstraction has 19409 states and 29388 transitions. [2021-12-28 02:29:09,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:29:09,139 INFO L276 IsEmpty]: Start isEmpty. Operand 19409 states and 29388 transitions. [2021-12-28 02:29:09,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-28 02:29:09,140 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:29:09,140 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:29:09,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-28 02:29:09,140 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:29:09,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:29:09,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1961193007, now seen corresponding path program 1 times [2021-12-28 02:29:09,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:29:09,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093625585] [2021-12-28 02:29:09,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:29:09,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:29:09,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:09,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:29:09,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:29:09,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093625585] [2021-12-28 02:29:09,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093625585] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:29:09,199 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:29:09,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 02:29:09,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445896623] [2021-12-28 02:29:09,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:29:09,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 02:29:09,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:29:09,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 02:29:09,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 02:29:09,201 INFO L87 Difference]: Start difference. First operand 19409 states and 29388 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:29:11,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:29:11,288 INFO L93 Difference]: Finished difference Result 46165 states and 69710 transitions. [2021-12-28 02:29:11,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 02:29:11,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-12-28 02:29:11,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:29:11,350 INFO L225 Difference]: With dead ends: 46165 [2021-12-28 02:29:11,350 INFO L226 Difference]: Without dead ends: 32083 [2021-12-28 02:29:11,371 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 [2021-12-28 02:29:11,372 INFO L933 BasicCegarLoop]: 1627 mSDtfsCounter, 1516 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 1744 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:29:11,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1516 Valid, 1744 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:29:11,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32083 states. [2021-12-28 02:29:13,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32083 to 31825. [2021-12-28 02:29:13,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31825 states, 31823 states have (on average 1.4906199918298086) internal successors, (47436), 31824 states have internal predecessors, (47436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:29:13,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31825 states to 31825 states and 47436 transitions. [2021-12-28 02:29:13,806 INFO L78 Accepts]: Start accepts. Automaton has 31825 states and 47436 transitions. Word has length 108 [2021-12-28 02:29:13,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:29:13,807 INFO L470 AbstractCegarLoop]: Abstraction has 31825 states and 47436 transitions. [2021-12-28 02:29:13,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:29:13,807 INFO L276 IsEmpty]: Start isEmpty. Operand 31825 states and 47436 transitions. [2021-12-28 02:29:13,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-28 02:29:13,808 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:29:13,808 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:29:13,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-28 02:29:13,809 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:29:13,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:29:13,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1894699495, now seen corresponding path program 1 times [2021-12-28 02:29:13,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:29:13,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679769254] [2021-12-28 02:29:13,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:29:13,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:29:13,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:14,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:29:14,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:29:14,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679769254] [2021-12-28 02:29:14,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679769254] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:29:14,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:29:14,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-28 02:29:14,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742587594] [2021-12-28 02:29:14,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:29:14,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-28 02:29:14,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:29:14,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-28 02:29:14,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-12-28 02:29:14,087 INFO L87 Difference]: Start difference. First operand 31825 states and 47436 transitions. Second operand has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:29:16,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:29:16,297 INFO L93 Difference]: Finished difference Result 58325 states and 86862 transitions. [2021-12-28 02:29:16,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-28 02:29:16,297 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-12-28 02:29:16,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:29:16,353 INFO L225 Difference]: With dead ends: 58325 [2021-12-28 02:29:16,353 INFO L226 Difference]: Without dead ends: 31827 [2021-12-28 02:29:16,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2021-12-28 02:29:16,391 INFO L933 BasicCegarLoop]: 1620 mSDtfsCounter, 3608 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3608 SdHoareTripleChecker+Valid, 2488 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 02:29:16,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3608 Valid, 2488 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 02:29:16,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31827 states. [2021-12-28 02:29:18,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31827 to 31825. [2021-12-28 02:29:18,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31825 states, 31823 states have (on average 1.4825754957106496) internal successors, (47180), 31824 states have internal predecessors, (47180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:29:18,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31825 states to 31825 states and 47180 transitions. [2021-12-28 02:29:18,946 INFO L78 Accepts]: Start accepts. Automaton has 31825 states and 47180 transitions. Word has length 108 [2021-12-28 02:29:18,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:29:18,946 INFO L470 AbstractCegarLoop]: Abstraction has 31825 states and 47180 transitions. [2021-12-28 02:29:18,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:29:18,946 INFO L276 IsEmpty]: Start isEmpty. Operand 31825 states and 47180 transitions. [2021-12-28 02:29:18,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-28 02:29:18,947 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:29:18,948 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:29:18,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-28 02:29:18,948 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:29:18,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:29:18,948 INFO L85 PathProgramCache]: Analyzing trace with hash 979135041, now seen corresponding path program 1 times [2021-12-28 02:29:18,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:29:18,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240216592] [2021-12-28 02:29:18,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:29:18,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:29:18,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:19,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:29:19,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:29:19,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240216592] [2021-12-28 02:29:19,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240216592] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:29:19,043 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:29:19,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 02:29:19,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117794368] [2021-12-28 02:29:19,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:29:19,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 02:29:19,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:29:19,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 02:29:19,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-28 02:29:19,045 INFO L87 Difference]: Start difference. First operand 31825 states and 47180 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:29:21,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:29:21,413 INFO L93 Difference]: Finished difference Result 58323 states and 86349 transitions. [2021-12-28 02:29:21,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 02:29:21,414 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2021-12-28 02:29:21,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:29:21,457 INFO L225 Difference]: With dead ends: 58323 [2021-12-28 02:29:21,457 INFO L226 Difference]: Without dead ends: 31825 [2021-12-28 02:29:21,477 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 [2021-12-28 02:29:21,478 INFO L933 BasicCegarLoop]: 1568 mSDtfsCounter, 4843 mSDsluCounter, 1524 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4843 SdHoareTripleChecker+Valid, 3092 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 02:29:21,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4843 Valid, 3092 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 02:29:21,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31825 states. [2021-12-28 02:29:24,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31825 to 31825. [2021-12-28 02:29:24,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31825 states, 31823 states have (on average 1.4745309995914904) internal successors, (46924), 31824 states have internal predecessors, (46924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:29:24,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31825 states to 31825 states and 46924 transitions. [2021-12-28 02:29:24,137 INFO L78 Accepts]: Start accepts. Automaton has 31825 states and 46924 transitions. Word has length 109 [2021-12-28 02:29:24,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:29:24,137 INFO L470 AbstractCegarLoop]: Abstraction has 31825 states and 46924 transitions. [2021-12-28 02:29:24,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:29:24,138 INFO L276 IsEmpty]: Start isEmpty. Operand 31825 states and 46924 transitions. [2021-12-28 02:29:24,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-28 02:29:24,140 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:29:24,140 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:29:24,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-28 02:29:24,141 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:29:24,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:29:24,141 INFO L85 PathProgramCache]: Analyzing trace with hash 278070463, now seen corresponding path program 1 times [2021-12-28 02:29:24,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:29:24,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189404004] [2021-12-28 02:29:24,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:29:24,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:29:24,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:24,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:29:24,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:29:24,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189404004] [2021-12-28 02:29:24,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189404004] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:29:24,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:29:24,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 02:29:24,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583359779] [2021-12-28 02:29:24,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:29:24,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 02:29:24,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:29:24,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 02:29:24,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 02:29:24,239 INFO L87 Difference]: Start difference. First operand 31825 states and 46924 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:29:28,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:29:28,214 INFO L93 Difference]: Finished difference Result 51451 states and 75393 transitions. [2021-12-28 02:29:28,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 02:29:28,215 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2021-12-28 02:29:28,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:29:28,287 INFO L225 Difference]: With dead ends: 51451 [2021-12-28 02:29:28,287 INFO L226 Difference]: Without dead ends: 51449 [2021-12-28 02:29:28,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-28 02:29:28,300 INFO L933 BasicCegarLoop]: 1688 mSDtfsCounter, 339 mSDsluCounter, 4889 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 6577 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:29:28,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 6577 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:29:28,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51449 states. [2021-12-28 02:29:30,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51449 to 32593. [2021-12-28 02:29:30,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32593 states, 32591 states have (on average 1.4594213126323219) internal successors, (47564), 32592 states have internal predecessors, (47564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:29:30,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32593 states to 32593 states and 47564 transitions. [2021-12-28 02:29:30,945 INFO L78 Accepts]: Start accepts. Automaton has 32593 states and 47564 transitions. Word has length 109 [2021-12-28 02:29:30,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:29:30,946 INFO L470 AbstractCegarLoop]: Abstraction has 32593 states and 47564 transitions. [2021-12-28 02:29:30,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:29:30,946 INFO L276 IsEmpty]: Start isEmpty. Operand 32593 states and 47564 transitions. [2021-12-28 02:29:30,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-28 02:29:30,947 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:29:30,948 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:29:30,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-28 02:29:30,948 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:29:30,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:29:30,949 INFO L85 PathProgramCache]: Analyzing trace with hash 171324818, now seen corresponding path program 1 times [2021-12-28 02:29:30,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:29:30,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641769408] [2021-12-28 02:29:30,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:29:30,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:29:30,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:30,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:29:30,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:29:30,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641769408] [2021-12-28 02:29:30,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641769408] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:29:30,997 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:29:30,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 02:29:30,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95234612] [2021-12-28 02:29:30,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:29:30,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 02:29:30,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:29:30,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 02:29:30,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 02:29:30,999 INFO L87 Difference]: Start difference. First operand 32593 states and 47564 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:29:34,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:29:34,494 INFO L93 Difference]: Finished difference Result 60248 states and 88018 transitions. [2021-12-28 02:29:34,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 02:29:34,495 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-12-28 02:29:34,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:29:34,556 INFO L225 Difference]: With dead ends: 60248 [2021-12-28 02:29:34,556 INFO L226 Difference]: Without dead ends: 45397 [2021-12-28 02:29:34,574 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 [2021-12-28 02:29:34,576 INFO L933 BasicCegarLoop]: 1731 mSDtfsCounter, 1549 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 1852 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 [2021-12-28 02:29:34,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1549 Valid, 1852 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:29:34,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45397 states.