./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label08.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3a877d22 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_label08.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 219fae8b2e03d20bcb768458013f321b0dd264dfdc5412ade22b395f9d4baa67 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 12:13:58,613 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 12:13:58,621 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 12:13:58,657 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 12:13:58,658 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 12:13:58,661 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 12:13:58,662 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 12:13:58,664 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 12:13:58,666 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 12:13:58,669 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 12:13:58,670 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 12:13:58,671 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 12:13:58,671 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 12:13:58,673 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 12:13:58,674 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 12:13:58,677 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 12:13:58,678 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 12:13:58,679 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 12:13:58,680 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 12:13:58,685 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 12:13:58,686 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 12:13:58,687 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 12:13:58,688 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 12:13:58,688 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 12:13:58,693 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 12:13:58,694 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 12:13:58,694 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 12:13:58,695 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 12:13:58,695 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 12:13:58,696 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 12:13:58,696 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 12:13:58,697 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 12:13:58,698 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 12:13:58,699 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 12:13:58,700 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 12:13:58,700 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 12:13:58,700 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 12:13:58,700 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 12:13:58,701 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 12:13:58,701 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 12:13:58,702 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 12:13:58,703 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 12:13:58,727 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 12:13:58,727 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 12:13:58,728 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 12:13:58,728 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 12:13:58,729 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 12:13:58,729 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 12:13:58,729 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 12:13:58,729 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 12:13:58,730 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 12:13:58,730 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 12:13:58,730 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 12:13:58,731 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 12:13:58,731 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 12:13:58,731 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 12:13:58,731 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 12:13:58,731 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 12:13:58,731 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 12:13:58,731 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 12:13:58,732 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 12:13:58,732 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 12:13:58,732 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 12:13:58,732 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 12:13:58,732 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 12:13:58,732 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 12:13:58,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 12:13:58,733 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 12:13:58,733 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 12:13:58,733 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 12:13:58,733 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 12:13:58,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 12:13:58,734 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 12:13:58,734 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 12:13:58,734 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 12:13:58,734 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 12:13:58,734 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 219fae8b2e03d20bcb768458013f321b0dd264dfdc5412ade22b395f9d4baa67 [2021-12-15 12:13:58,962 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 12:13:58,979 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 12:13:58,981 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 12:13:58,981 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 12:13:58,982 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 12:13:58,983 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label08.c [2021-12-15 12:13:59,039 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50267f3b3/0bb3257d2cf14135acf221d41decaaf2/FLAGc6aaf11a4 [2021-12-15 12:13:59,819 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 12:13:59,819 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label08.c [2021-12-15 12:13:59,856 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50267f3b3/0bb3257d2cf14135acf221d41decaaf2/FLAGc6aaf11a4 [2021-12-15 12:14:00,032 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50267f3b3/0bb3257d2cf14135acf221d41decaaf2 [2021-12-15 12:14:00,037 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 12:14:00,038 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 12:14:00,040 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 12:14:00,040 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 12:14:00,047 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 12:14:00,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:14:00" (1/1) ... [2021-12-15 12:14:00,049 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f6da871 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:14:00, skipping insertion in model container [2021-12-15 12:14:00,049 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:14:00" (1/1) ... [2021-12-15 12:14:00,054 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 12:14:00,200 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 12:14:00,545 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_label08.c[26888,26901] [2021-12-15 12:14:00,577 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_label08.c[30395,30408] [2021-12-15 12:14:01,141 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:14:01,149 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 12:14:01,186 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_label08.c[26888,26901] [2021-12-15 12:14:01,196 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_label08.c[30395,30408] [2021-12-15 12:14:01,517 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:14:01,542 INFO L208 MainTranslator]: Completed translation [2021-12-15 12:14:01,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:14:01 WrapperNode [2021-12-15 12:14:01,543 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 12:14:01,544 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 12:14:01,544 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 12:14:01,544 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 12:14:01,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:14:01" (1/1) ... [2021-12-15 12:14:01,595 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:14:01" (1/1) ... [2021-12-15 12:14:01,782 INFO L137 Inliner]: procedures = 40, calls = 25, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 5279 [2021-12-15 12:14:01,783 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 12:14:01,783 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 12:14:01,784 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 12:14:01,784 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 12:14:01,791 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:14:01" (1/1) ... [2021-12-15 12:14:01,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:14:01" (1/1) ... [2021-12-15 12:14:01,997 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:14:01" (1/1) ... [2021-12-15 12:14:01,999 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:14:01" (1/1) ... [2021-12-15 12:14:02,128 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:14:01" (1/1) ... [2021-12-15 12:14:02,154 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:14:01" (1/1) ... [2021-12-15 12:14:02,198 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:14:01" (1/1) ... [2021-12-15 12:14:02,358 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 12:14:02,359 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 12:14:02,359 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 12:14:02,359 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 12:14:02,361 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:14:01" (1/1) ... [2021-12-15 12:14:02,366 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 12:14:02,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 12:14:02,382 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) [2021-12-15 12:14:02,400 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 [2021-12-15 12:14:02,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 12:14:02,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 12:14:02,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 12:14:02,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 12:14:02,634 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 12:14:02,636 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 12:14:05,619 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 12:14:05,635 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 12:14:05,636 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-15 12:14:05,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 12:14:05 BoogieIcfgContainer [2021-12-15 12:14:05,638 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 12:14:05,640 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 12:14:05,640 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 12:14:05,643 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 12:14:05,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 12:14:00" (1/3) ... [2021-12-15 12:14:05,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a9f3680 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 12:14:05, skipping insertion in model container [2021-12-15 12:14:05,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:14:01" (2/3) ... [2021-12-15 12:14:05,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a9f3680 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 12:14:05, skipping insertion in model container [2021-12-15 12:14:05,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 12:14:05" (3/3) ... [2021-12-15 12:14:05,645 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label08.c [2021-12-15 12:14:05,648 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 12:14:05,648 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 12:14:05,683 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 12:14:05,689 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 [2021-12-15 12:14:05,689 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 12:14:05,711 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) [2021-12-15 12:14:05,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-15 12:14:05,716 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:14:05,716 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] [2021-12-15 12:14:05,717 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:14:05,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:14:05,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1826483091, now seen corresponding path program 1 times [2021-12-15 12:14:05,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:14:05,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006385263] [2021-12-15 12:14:05,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:14:05,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:14:05,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:14:05,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:14:05,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:14:05,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006385263] [2021-12-15 12:14:05,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006385263] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:14:05,961 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:14:05,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 12:14:05,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378266668] [2021-12-15 12:14:05,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:14:05,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 12:14:05,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:14:05,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 12:14:05,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 12:14:05,992 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 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:14:08,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:14:08,890 INFO L93 Difference]: Finished difference Result 2616 states and 5018 transitions. [2021-12-15 12:14:08,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 12:14:08,893 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2021-12-15 12:14:08,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:14:08,917 INFO L225 Difference]: With dead ends: 2616 [2021-12-15 12:14:08,917 INFO L226 Difference]: Without dead ends: 1650 [2021-12-15 12:14:08,922 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 [2021-12-15 12:14:08,924 INFO L933 BasicCegarLoop]: 831 mSDtfsCounter, 1047 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2257 mSolverCounterSat, 724 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1047 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 2981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 724 IncrementalHoareTripleChecker+Valid, 2257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-15 12:14:08,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1047 Valid, 842 Invalid, 2981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [724 Valid, 2257 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-15 12:14:08,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1650 states. [2021-12-15 12:14:08,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1650 to 1650. [2021-12-15 12:14:08,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1650 states, 1648 states have (on average 1.5764563106796117) internal successors, (2598), 1649 states have internal predecessors, (2598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:14:08,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1650 states to 1650 states and 2598 transitions. [2021-12-15 12:14:08,992 INFO L78 Accepts]: Start accepts. Automaton has 1650 states and 2598 transitions. Word has length 30 [2021-12-15 12:14:08,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:14:08,993 INFO L470 AbstractCegarLoop]: Abstraction has 1650 states and 2598 transitions. [2021-12-15 12:14:08,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:14:08,993 INFO L276 IsEmpty]: Start isEmpty. Operand 1650 states and 2598 transitions. [2021-12-15 12:14:08,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-15 12:14:08,994 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:14:08,995 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] [2021-12-15 12:14:08,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 12:14:08,995 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:14:08,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:14:08,996 INFO L85 PathProgramCache]: Analyzing trace with hash 2117945689, now seen corresponding path program 1 times [2021-12-15 12:14:08,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:14:08,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294569094] [2021-12-15 12:14:08,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:14:08,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:14:09,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:14:09,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:14:09,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:14:09,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294569094] [2021-12-15 12:14:09,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294569094] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:14:09,051 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:14:09,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 12:14:09,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408052301] [2021-12-15 12:14:09,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:14:09,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 12:14:09,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:14:09,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 12:14:09,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 12:14:09,054 INFO L87 Difference]: Start difference. First operand 1650 states and 2598 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) [2021-12-15 12:14:09,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:14:09,126 INFO L93 Difference]: Finished difference Result 1732 states and 2726 transitions. [2021-12-15 12:14:09,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 12:14:09,127 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 [2021-12-15 12:14:09,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:14:09,132 INFO L225 Difference]: With dead ends: 1732 [2021-12-15 12:14:09,132 INFO L226 Difference]: Without dead ends: 1650 [2021-12-15 12:14:09,133 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 [2021-12-15 12:14:09,134 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 [2021-12-15 12:14:09,134 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] [2021-12-15 12:14:09,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1650 states. [2021-12-15 12:14:09,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1650 to 1650. [2021-12-15 12:14:09,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1650 states, 1648 states have (on average 1.5394417475728155) internal successors, (2537), 1649 states have internal predecessors, (2537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:14:09,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1650 states to 1650 states and 2537 transitions. [2021-12-15 12:14:09,160 INFO L78 Accepts]: Start accepts. Automaton has 1650 states and 2537 transitions. Word has length 46 [2021-12-15 12:14:09,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:14:09,160 INFO L470 AbstractCegarLoop]: Abstraction has 1650 states and 2537 transitions. [2021-12-15 12:14:09,160 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) [2021-12-15 12:14:09,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1650 states and 2537 transitions. [2021-12-15 12:14:09,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-15 12:14:09,163 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:14:09,163 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 12:14:09,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-15 12:14:09,164 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:14:09,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:14:09,165 INFO L85 PathProgramCache]: Analyzing trace with hash 909369916, now seen corresponding path program 1 times [2021-12-15 12:14:09,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:14:09,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448275691] [2021-12-15 12:14:09,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:14:09,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:14:09,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:14:09,303 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-15 12:14:09,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:14:09,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448275691] [2021-12-15 12:14:09,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448275691] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:14:09,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:14:09,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 12:14:09,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898651094] [2021-12-15 12:14:09,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:14:09,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 12:14:09,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:14:09,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 12:14:09,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 12:14:09,309 INFO L87 Difference]: Start difference. First operand 1650 states and 2537 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:14:11,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:14:11,990 INFO L93 Difference]: Finished difference Result 4656 states and 7224 transitions. [2021-12-15 12:14:11,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 12:14:11,991 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 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 101 [2021-12-15 12:14:11,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:14:12,002 INFO L225 Difference]: With dead ends: 4656 [2021-12-15 12:14:12,002 INFO L226 Difference]: Without dead ends: 3152 [2021-12-15 12:14:12,022 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 [2021-12-15 12:14:12,024 INFO L933 BasicCegarLoop]: 658 mSDtfsCounter, 916 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-15 12:14:12,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [916 Valid, 665 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-15 12:14:12,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3152 states. [2021-12-15 12:14:12,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3152 to 3152. [2021-12-15 12:14:12,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3152 states, 3150 states have (on average 1.3698412698412699) internal successors, (4315), 3151 states have internal predecessors, (4315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:14:12,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3152 states to 3152 states and 4315 transitions. [2021-12-15 12:14:12,075 INFO L78 Accepts]: Start accepts. Automaton has 3152 states and 4315 transitions. Word has length 101 [2021-12-15 12:14:12,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:14:12,077 INFO L470 AbstractCegarLoop]: Abstraction has 3152 states and 4315 transitions. [2021-12-15 12:14:12,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:14:12,078 INFO L276 IsEmpty]: Start isEmpty. Operand 3152 states and 4315 transitions. [2021-12-15 12:14:12,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-15 12:14:12,082 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:14:12,082 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] [2021-12-15 12:14:12,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-15 12:14:12,083 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:14:12,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:14:12,084 INFO L85 PathProgramCache]: Analyzing trace with hash 211182729, now seen corresponding path program 1 times [2021-12-15 12:14:12,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:14:12,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812771505] [2021-12-15 12:14:12,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:14:12,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:14:12,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:14:12,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:14:12,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:14:12,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812771505] [2021-12-15 12:14:12,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812771505] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:14:12,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:14:12,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 12:14:12,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180858987] [2021-12-15 12:14:12,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:14:12,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 12:14:12,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:14:12,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 12:14:12,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 12:14:12,175 INFO L87 Difference]: Start difference. First operand 3152 states and 4315 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) [2021-12-15 12:14:12,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:14:12,243 INFO L93 Difference]: Finished difference Result 3302 states and 4553 transitions. [2021-12-15 12:14:12,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 12:14:12,246 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 [2021-12-15 12:14:12,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:14:12,256 INFO L225 Difference]: With dead ends: 3302 [2021-12-15 12:14:12,257 INFO L226 Difference]: Without dead ends: 3224 [2021-12-15 12:14:12,257 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 [2021-12-15 12:14:12,265 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 [2021-12-15 12:14:12,266 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] [2021-12-15 12:14:12,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3224 states. [2021-12-15 12:14:12,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3224 to 3222. [2021-12-15 12:14:12,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3222 states, 3220 states have (on average 1.3748447204968943) internal successors, (4427), 3221 states have internal predecessors, (4427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:14:12,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3222 states to 3222 states and 4427 transitions. [2021-12-15 12:14:12,329 INFO L78 Accepts]: Start accepts. Automaton has 3222 states and 4427 transitions. Word has length 106 [2021-12-15 12:14:12,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:14:12,329 INFO L470 AbstractCegarLoop]: Abstraction has 3222 states and 4427 transitions. [2021-12-15 12:14:12,330 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) [2021-12-15 12:14:12,330 INFO L276 IsEmpty]: Start isEmpty. Operand 3222 states and 4427 transitions. [2021-12-15 12:14:12,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-15 12:14:12,332 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:14:12,333 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] [2021-12-15 12:14:12,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-15 12:14:12,333 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:14:12,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:14:12,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1458691583, now seen corresponding path program 1 times [2021-12-15 12:14:12,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:14:12,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3182279] [2021-12-15 12:14:12,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:14:12,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:14:12,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:14:12,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:14:12,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:14:12,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3182279] [2021-12-15 12:14:12,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3182279] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:14:12,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:14:12,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 12:14:12,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236051965] [2021-12-15 12:14:12,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:14:12,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 12:14:12,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:14:12,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 12:14:12,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 12:14:12,394 INFO L87 Difference]: Start difference. First operand 3222 states and 4427 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) [2021-12-15 12:14:12,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:14:12,422 INFO L93 Difference]: Finished difference Result 3506 states and 4879 transitions. [2021-12-15 12:14:12,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 12:14:12,423 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 [2021-12-15 12:14:12,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:14:12,435 INFO L225 Difference]: With dead ends: 3506 [2021-12-15 12:14:12,435 INFO L226 Difference]: Without dead ends: 3358 [2021-12-15 12:14:12,438 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 [2021-12-15 12:14:12,438 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 [2021-12-15 12:14:12,439 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] [2021-12-15 12:14:12,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3358 states. [2021-12-15 12:14:12,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3358 to 3356. [2021-12-15 12:14:12,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3356 states, 3354 states have (on average 1.383422778771616) internal successors, (4640), 3355 states have internal predecessors, (4640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:14:12,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3356 states to 3356 states and 4640 transitions. [2021-12-15 12:14:12,489 INFO L78 Accepts]: Start accepts. Automaton has 3356 states and 4640 transitions. Word has length 106 [2021-12-15 12:14:12,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:14:12,489 INFO L470 AbstractCegarLoop]: Abstraction has 3356 states and 4640 transitions. [2021-12-15 12:14:12,489 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) [2021-12-15 12:14:12,490 INFO L276 IsEmpty]: Start isEmpty. Operand 3356 states and 4640 transitions. [2021-12-15 12:14:12,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-15 12:14:12,491 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:14:12,491 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] [2021-12-15 12:14:12,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-15 12:14:12,491 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:14:12,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:14:12,492 INFO L85 PathProgramCache]: Analyzing trace with hash 717259381, now seen corresponding path program 1 times [2021-12-15 12:14:12,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:14:12,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067481597] [2021-12-15 12:14:12,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:14:12,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:14:12,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:14:12,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:14:12,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:14:12,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067481597] [2021-12-15 12:14:12,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067481597] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:14:12,540 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:14:12,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 12:14:12,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741466856] [2021-12-15 12:14:12,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:14:12,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 12:14:12,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:14:12,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 12:14:12,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 12:14:12,541 INFO L87 Difference]: Start difference. First operand 3356 states and 4640 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) [2021-12-15 12:14:12,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:14:12,565 INFO L93 Difference]: Finished difference Result 3896 states and 5498 transitions. [2021-12-15 12:14:12,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 12:14:12,566 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 [2021-12-15 12:14:12,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:14:12,574 INFO L225 Difference]: With dead ends: 3896 [2021-12-15 12:14:12,574 INFO L226 Difference]: Without dead ends: 3614 [2021-12-15 12:14:12,575 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 [2021-12-15 12:14:12,576 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 [2021-12-15 12:14:12,576 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] [2021-12-15 12:14:12,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3614 states. [2021-12-15 12:14:12,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3614 to 3612. [2021-12-15 12:14:12,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3612 states, 3610 states have (on average 1.3972299168975069) internal successors, (5044), 3611 states have internal predecessors, (5044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:14:12,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3612 states to 3612 states and 5044 transitions. [2021-12-15 12:14:12,622 INFO L78 Accepts]: Start accepts. Automaton has 3612 states and 5044 transitions. Word has length 106 [2021-12-15 12:14:12,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:14:12,622 INFO L470 AbstractCegarLoop]: Abstraction has 3612 states and 5044 transitions. [2021-12-15 12:14:12,622 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) [2021-12-15 12:14:12,622 INFO L276 IsEmpty]: Start isEmpty. Operand 3612 states and 5044 transitions. [2021-12-15 12:14:12,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-15 12:14:12,623 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:14:12,623 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] [2021-12-15 12:14:12,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-15 12:14:12,624 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:14:12,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:14:12,624 INFO L85 PathProgramCache]: Analyzing trace with hash -28323349, now seen corresponding path program 1 times [2021-12-15 12:14:12,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:14:12,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921613053] [2021-12-15 12:14:12,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:14:12,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:14:12,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:14:12,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:14:12,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:14:12,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921613053] [2021-12-15 12:14:12,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921613053] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:14:12,662 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:14:12,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 12:14:12,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448437787] [2021-12-15 12:14:12,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:14:12,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 12:14:12,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:14:12,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 12:14:12,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 12:14:12,664 INFO L87 Difference]: Start difference. First operand 3612 states and 5044 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) [2021-12-15 12:14:12,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:14:12,691 INFO L93 Difference]: Finished difference Result 4640 states and 6670 transitions. [2021-12-15 12:14:12,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 12:14:12,692 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 [2021-12-15 12:14:12,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:14:12,702 INFO L225 Difference]: With dead ends: 4640 [2021-12-15 12:14:12,702 INFO L226 Difference]: Without dead ends: 4102 [2021-12-15 12:14:12,703 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 [2021-12-15 12:14:12,704 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 [2021-12-15 12:14:12,704 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] [2021-12-15 12:14:12,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4102 states. [2021-12-15 12:14:12,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4102 to 4100. [2021-12-15 12:14:12,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4100 states, 4098 states have (on average 1.417276720351391) internal successors, (5808), 4099 states have internal predecessors, (5808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:14:12,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4100 states to 4100 states and 5808 transitions. [2021-12-15 12:14:12,766 INFO L78 Accepts]: Start accepts. Automaton has 4100 states and 5808 transitions. Word has length 106 [2021-12-15 12:14:12,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:14:12,766 INFO L470 AbstractCegarLoop]: Abstraction has 4100 states and 5808 transitions. [2021-12-15 12:14:12,767 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) [2021-12-15 12:14:12,767 INFO L276 IsEmpty]: Start isEmpty. Operand 4100 states and 5808 transitions. [2021-12-15 12:14:12,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-15 12:14:12,768 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:14:12,768 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] [2021-12-15 12:14:12,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-15 12:14:12,768 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:14:12,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:14:12,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1968354207, now seen corresponding path program 1 times [2021-12-15 12:14:12,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:14:12,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341422301] [2021-12-15 12:14:12,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:14:12,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:14:12,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:14:12,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:14:12,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:14:12,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341422301] [2021-12-15 12:14:12,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341422301] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:14:12,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:14:12,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 12:14:12,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065305213] [2021-12-15 12:14:12,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:14:12,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 12:14:12,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:14:12,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 12:14:12,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 12:14:12,809 INFO L87 Difference]: Start difference. First operand 4100 states and 5808 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) [2021-12-15 12:14:12,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:14:12,847 INFO L93 Difference]: Finished difference Result 6056 states and 8882 transitions. [2021-12-15 12:14:12,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 12:14:12,848 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 [2021-12-15 12:14:12,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:14:12,860 INFO L225 Difference]: With dead ends: 6056 [2021-12-15 12:14:12,861 INFO L226 Difference]: Without dead ends: 5030 [2021-12-15 12:14:12,863 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 [2021-12-15 12:14:12,863 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 [2021-12-15 12:14:12,864 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] [2021-12-15 12:14:12,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5030 states. [2021-12-15 12:14:12,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5030 to 5028. [2021-12-15 12:14:12,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5028 states, 5026 states have (on average 1.442101074413052) internal successors, (7248), 5027 states have internal predecessors, (7248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:14:12,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5028 states to 5028 states and 7248 transitions. [2021-12-15 12:14:12,947 INFO L78 Accepts]: Start accepts. Automaton has 5028 states and 7248 transitions. Word has length 106 [2021-12-15 12:14:12,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:14:12,947 INFO L470 AbstractCegarLoop]: Abstraction has 5028 states and 7248 transitions. [2021-12-15 12:14:12,947 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) [2021-12-15 12:14:12,947 INFO L276 IsEmpty]: Start isEmpty. Operand 5028 states and 7248 transitions. [2021-12-15 12:14:12,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-15 12:14:12,948 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:14:12,948 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] [2021-12-15 12:14:12,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-15 12:14:12,949 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:14:12,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:14:12,949 INFO L85 PathProgramCache]: Analyzing trace with hash 732328407, now seen corresponding path program 1 times [2021-12-15 12:14:12,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:14:12,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367928016] [2021-12-15 12:14:12,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:14:12,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:14:12,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:14:12,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:14:12,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:14:12,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367928016] [2021-12-15 12:14:12,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367928016] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:14:12,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:14:12,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 12:14:12,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38086454] [2021-12-15 12:14:12,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:14:12,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 12:14:12,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:14:12,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 12:14:12,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 12:14:12,992 INFO L87 Difference]: Start difference. First operand 5028 states and 7248 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) [2021-12-15 12:14:13,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:14:13,058 INFO L93 Difference]: Finished difference Result 8744 states and 13042 transitions. [2021-12-15 12:14:13,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 12:14:13,059 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 [2021-12-15 12:14:13,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:14:13,072 INFO L225 Difference]: With dead ends: 8744 [2021-12-15 12:14:13,073 INFO L226 Difference]: Without dead ends: 6790 [2021-12-15 12:14:13,077 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 [2021-12-15 12:14:13,078 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 [2021-12-15 12:14:13,078 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] [2021-12-15 12:14:13,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6790 states. [2021-12-15 12:14:13,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6790 to 6788. [2021-12-15 12:14:13,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6788 states, 6786 states have (on average 1.4665487768936045) internal successors, (9952), 6787 states have internal predecessors, (9952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:14:13,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6788 states to 6788 states and 9952 transitions. [2021-12-15 12:14:13,214 INFO L78 Accepts]: Start accepts. Automaton has 6788 states and 9952 transitions. Word has length 106 [2021-12-15 12:14:13,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:14:13,214 INFO L470 AbstractCegarLoop]: Abstraction has 6788 states and 9952 transitions. [2021-12-15 12:14:13,215 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) [2021-12-15 12:14:13,215 INFO L276 IsEmpty]: Start isEmpty. Operand 6788 states and 9952 transitions. [2021-12-15 12:14:13,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-15 12:14:13,216 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:14:13,216 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] [2021-12-15 12:14:13,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-15 12:14:13,220 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:14:13,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:14:13,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1070121549, now seen corresponding path program 1 times [2021-12-15 12:14:13,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:14:13,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164784666] [2021-12-15 12:14:13,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:14:13,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:14:13,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:14:13,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:14:13,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:14:13,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164784666] [2021-12-15 12:14:13,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164784666] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:14:13,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:14:13,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 12:14:13,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403998873] [2021-12-15 12:14:13,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:14:13,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 12:14:13,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:14:13,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 12:14:13,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 12:14:13,308 INFO L87 Difference]: Start difference. First operand 6788 states and 9952 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) [2021-12-15 12:14:13,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:14:13,423 INFO L93 Difference]: Finished difference Result 13832 states and 20834 transitions. [2021-12-15 12:14:13,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 12:14:13,423 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 [2021-12-15 12:14:13,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:14:13,438 INFO L225 Difference]: With dead ends: 13832 [2021-12-15 12:14:13,439 INFO L226 Difference]: Without dead ends: 10118 [2021-12-15 12:14:13,445 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 [2021-12-15 12:14:13,446 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 [2021-12-15 12:14:13,447 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] [2021-12-15 12:14:13,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10118 states. [2021-12-15 12:14:13,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10118 to 10116. [2021-12-15 12:14:13,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10116 states, 10114 states have (on average 1.4838837255289699) internal successors, (15008), 10115 states have internal predecessors, (15008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:14:13,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10116 states to 10116 states and 15008 transitions. [2021-12-15 12:14:13,670 INFO L78 Accepts]: Start accepts. Automaton has 10116 states and 15008 transitions. Word has length 106 [2021-12-15 12:14:13,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:14:13,671 INFO L470 AbstractCegarLoop]: Abstraction has 10116 states and 15008 transitions. [2021-12-15 12:14:13,671 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) [2021-12-15 12:14:13,671 INFO L276 IsEmpty]: Start isEmpty. Operand 10116 states and 15008 transitions. [2021-12-15 12:14:13,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-15 12:14:13,672 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:14:13,672 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] [2021-12-15 12:14:13,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-15 12:14:13,673 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:14:13,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:14:13,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1478760321, now seen corresponding path program 1 times [2021-12-15 12:14:13,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:14:13,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448053556] [2021-12-15 12:14:13,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:14:13,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:14:13,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:14:13,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:14:13,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:14:13,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448053556] [2021-12-15 12:14:13,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448053556] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:14:13,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:14:13,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-15 12:14:13,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559220813] [2021-12-15 12:14:13,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:14:13,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-15 12:14:13,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:14:13,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-15 12:14:13,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-15 12:14:13,781 INFO L87 Difference]: Start difference. First operand 10116 states and 15008 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) [2021-12-15 12:14:16,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:14:16,001 INFO L93 Difference]: Finished difference Result 122788 states and 188080 transitions. [2021-12-15 12:14:16,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-15 12:14:16,002 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 [2021-12-15 12:14:16,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:14:16,245 INFO L225 Difference]: With dead ends: 122788 [2021-12-15 12:14:16,245 INFO L226 Difference]: Without dead ends: 115746 [2021-12-15 12:14:16,290 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 [2021-12-15 12:14:16,291 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 [2021-12-15 12:14:16,291 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] [2021-12-15 12:14:16,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115746 states. [2021-12-15 12:14:18,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115746 to 17156. [2021-12-15 12:14:18,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17156 states, 17154 states have (on average 1.490497843068672) internal successors, (25568), 17155 states have internal predecessors, (25568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:14:18,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17156 states to 17156 states and 25568 transitions. [2021-12-15 12:14:18,124 INFO L78 Accepts]: Start accepts. Automaton has 17156 states and 25568 transitions. Word has length 106 [2021-12-15 12:14:18,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:14:18,124 INFO L470 AbstractCegarLoop]: Abstraction has 17156 states and 25568 transitions. [2021-12-15 12:14:18,124 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) [2021-12-15 12:14:18,124 INFO L276 IsEmpty]: Start isEmpty. Operand 17156 states and 25568 transitions. [2021-12-15 12:14:18,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-15 12:14:18,125 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:14:18,126 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 12:14:18,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-15 12:14:18,126 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:14:18,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:14:18,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1678979275, now seen corresponding path program 1 times [2021-12-15 12:14:18,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:14:18,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283690623] [2021-12-15 12:14:18,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:14:18,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:14:18,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:14:18,175 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:14:18,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:14:18,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283690623] [2021-12-15 12:14:18,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283690623] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:14:18,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:14:18,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 12:14:18,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905516056] [2021-12-15 12:14:18,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:14:18,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 12:14:18,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:14:18,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 12:14:18,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 12:14:18,179 INFO L87 Difference]: Start difference. First operand 17156 states and 25568 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:14:21,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:14:21,317 INFO L93 Difference]: Finished difference Result 23168 states and 33812 transitions. [2021-12-15 12:14:21,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 12:14:21,318 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2021-12-15 12:14:21,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:14:21,346 INFO L225 Difference]: With dead ends: 23168 [2021-12-15 12:14:21,346 INFO L226 Difference]: Without dead ends: 20162 [2021-12-15 12:14:21,353 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 [2021-12-15 12:14:21,354 INFO L933 BasicCegarLoop]: 536 mSDtfsCounter, 1104 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1104 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 2859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-15 12:14:21,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1104 Valid, 543 Invalid, 2859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-15 12:14:21,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20162 states. [2021-12-15 12:14:21,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20162 to 20160. [2021-12-15 12:14:21,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20160 states, 20158 states have (on average 1.4433475543208651) internal successors, (29095), 20159 states have internal predecessors, (29095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:14:21,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20160 states to 20160 states and 29095 transitions. [2021-12-15 12:14:21,983 INFO L78 Accepts]: Start accepts. Automaton has 20160 states and 29095 transitions. Word has length 107 [2021-12-15 12:14:21,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:14:21,983 INFO L470 AbstractCegarLoop]: Abstraction has 20160 states and 29095 transitions. [2021-12-15 12:14:21,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:14:21,983 INFO L276 IsEmpty]: Start isEmpty. Operand 20160 states and 29095 transitions. [2021-12-15 12:14:21,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-15 12:14:21,985 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:14:21,985 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] [2021-12-15 12:14:21,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-15 12:14:21,985 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:14:21,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:14:21,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1961193007, now seen corresponding path program 1 times [2021-12-15 12:14:21,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:14:21,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105612096] [2021-12-15 12:14:21,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:14:21,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:14:22,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:14:22,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:14:22,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:14:22,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105612096] [2021-12-15 12:14:22,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105612096] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:14:22,036 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:14:22,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 12:14:22,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860841801] [2021-12-15 12:14:22,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:14:22,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 12:14:22,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:14:22,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 12:14:22,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 12:14:22,038 INFO L87 Difference]: Start difference. First operand 20160 states and 29095 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) [2021-12-15 12:14:22,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:14:22,766 INFO L93 Difference]: Finished difference Result 46916 states and 69417 transitions. [2021-12-15 12:14:22,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 12:14:22,766 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 [2021-12-15 12:14:22,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:14:22,811 INFO L225 Difference]: With dead ends: 46916 [2021-12-15 12:14:22,811 INFO L226 Difference]: Without dead ends: 32834 [2021-12-15 12:14:22,831 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 [2021-12-15 12:14:22,834 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 [2021-12-15 12:14:22,834 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] [2021-12-15 12:14:22,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32834 states. [2021-12-15 12:14:24,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32834 to 32576. [2021-12-15 12:14:24,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32576 states, 32574 states have (on average 1.4472585497636152) internal successors, (47143), 32575 states have internal predecessors, (47143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:14:24,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32576 states to 32576 states and 47143 transitions. [2021-12-15 12:14:24,149 INFO L78 Accepts]: Start accepts. Automaton has 32576 states and 47143 transitions. Word has length 108 [2021-12-15 12:14:24,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:14:24,150 INFO L470 AbstractCegarLoop]: Abstraction has 32576 states and 47143 transitions. [2021-12-15 12:14:24,150 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) [2021-12-15 12:14:24,150 INFO L276 IsEmpty]: Start isEmpty. Operand 32576 states and 47143 transitions. [2021-12-15 12:14:24,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-15 12:14:24,152 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:14:24,152 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] [2021-12-15 12:14:24,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-15 12:14:24,152 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:14:24,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:14:24,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1894699495, now seen corresponding path program 1 times [2021-12-15 12:14:24,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:14:24,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304858793] [2021-12-15 12:14:24,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:14:24,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:14:24,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:14:24,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:14:24,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:14:24,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304858793] [2021-12-15 12:14:24,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304858793] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:14:24,462 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:14:24,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-15 12:14:24,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346675185] [2021-12-15 12:14:24,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:14:24,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-15 12:14:24,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:14:24,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-15 12:14:24,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-12-15 12:14:24,464 INFO L87 Difference]: Start difference. First operand 32576 states and 47143 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) [2021-12-15 12:14:25,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:14:25,627 INFO L93 Difference]: Finished difference Result 59076 states and 86569 transitions. [2021-12-15 12:14:25,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-15 12:14:25,628 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 [2021-12-15 12:14:25,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:14:25,672 INFO L225 Difference]: With dead ends: 59076 [2021-12-15 12:14:25,672 INFO L226 Difference]: Without dead ends: 32578 [2021-12-15 12:14:25,696 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 [2021-12-15 12:14:25,697 INFO L933 BasicCegarLoop]: 1620 mSDtfsCounter, 8159 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8159 SdHoareTripleChecker+Valid, 2470 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 12:14:25,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8159 Valid, 2470 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 12:14:25,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32578 states. [2021-12-15 12:14:26,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32578 to 32576. [2021-12-15 12:14:26,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32576 states, 32574 states have (on average 1.4393995210904402) internal successors, (46887), 32575 states have internal predecessors, (46887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:14:26,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32576 states to 32576 states and 46887 transitions. [2021-12-15 12:14:26,973 INFO L78 Accepts]: Start accepts. Automaton has 32576 states and 46887 transitions. Word has length 108 [2021-12-15 12:14:26,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:14:26,973 INFO L470 AbstractCegarLoop]: Abstraction has 32576 states and 46887 transitions. [2021-12-15 12:14:26,973 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) [2021-12-15 12:14:26,973 INFO L276 IsEmpty]: Start isEmpty. Operand 32576 states and 46887 transitions. [2021-12-15 12:14:26,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-15 12:14:26,974 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:14:26,975 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] [2021-12-15 12:14:26,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-15 12:14:26,975 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:14:26,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:14:26,975 INFO L85 PathProgramCache]: Analyzing trace with hash 979135041, now seen corresponding path program 1 times [2021-12-15 12:14:26,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:14:26,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420112291] [2021-12-15 12:14:26,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:14:26,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:14:26,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:14:27,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:14:27,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:14:27,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420112291] [2021-12-15 12:14:27,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420112291] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:14:27,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:14:27,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 12:14:27,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014384095] [2021-12-15 12:14:27,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:14:27,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-15 12:14:27,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:14:27,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-15 12:14:27,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-15 12:14:27,036 INFO L87 Difference]: Start difference. First operand 32576 states and 46887 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) [2021-12-15 12:14:28,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:14:28,348 INFO L93 Difference]: Finished difference Result 59074 states and 86056 transitions. [2021-12-15 12:14:28,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-15 12:14:28,359 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 [2021-12-15 12:14:28,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:14:28,420 INFO L225 Difference]: With dead ends: 59074 [2021-12-15 12:14:28,420 INFO L226 Difference]: Without dead ends: 32576 [2021-12-15 12:14:28,449 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 [2021-12-15 12:14:28,450 INFO L933 BasicCegarLoop]: 1568 mSDtfsCounter, 4843 mSDsluCounter, 1524 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2021-12-15 12:14:28,450 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] [2021-12-15 12:14:28,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32576 states. [2021-12-15 12:14:29,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32576 to 32576. [2021-12-15 12:14:29,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32576 states, 32574 states have (on average 1.4315404924172652) internal successors, (46631), 32575 states have internal predecessors, (46631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:14:29,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32576 states to 32576 states and 46631 transitions. [2021-12-15 12:14:29,853 INFO L78 Accepts]: Start accepts. Automaton has 32576 states and 46631 transitions. Word has length 109 [2021-12-15 12:14:29,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:14:29,854 INFO L470 AbstractCegarLoop]: Abstraction has 32576 states and 46631 transitions. [2021-12-15 12:14:29,854 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) [2021-12-15 12:14:29,854 INFO L276 IsEmpty]: Start isEmpty. Operand 32576 states and 46631 transitions. [2021-12-15 12:14:29,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-15 12:14:29,872 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:14:29,872 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] [2021-12-15 12:14:29,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-15 12:14:29,872 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:14:29,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:14:29,873 INFO L85 PathProgramCache]: Analyzing trace with hash 278070463, now seen corresponding path program 1 times [2021-12-15 12:14:29,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:14:29,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958771799] [2021-12-15 12:14:29,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:14:29,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:14:29,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:14:29,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:14:29,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:14:29,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958771799] [2021-12-15 12:14:29,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958771799] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:14:29,989 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:14:29,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-15 12:14:29,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239681114] [2021-12-15 12:14:29,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:14:29,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-15 12:14:29,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:14:29,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-15 12:14:29,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-15 12:14:29,991 INFO L87 Difference]: Start difference. First operand 32576 states and 46631 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 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) [2021-12-15 12:14:32,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:14:32,039 INFO L93 Difference]: Finished difference Result 52202 states and 75100 transitions. [2021-12-15 12:14:32,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-15 12:14:32,040 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 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 [2021-12-15 12:14:32,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:14:32,116 INFO L225 Difference]: With dead ends: 52202 [2021-12-15 12:14:32,116 INFO L226 Difference]: Without dead ends: 52200 [2021-12-15 12:14:32,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-12-15 12:14:32,131 INFO L933 BasicCegarLoop]: 1685 mSDtfsCounter, 900 mSDsluCounter, 9383 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 900 SdHoareTripleChecker+Valid, 11068 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 12:14:32,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [900 Valid, 11068 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 12:14:32,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52200 states. [2021-12-15 12:14:33,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52200 to 33344. [2021-12-15 12:14:33,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33344 states, 33342 states have (on average 1.4177613820406694) internal successors, (47271), 33343 states have internal predecessors, (47271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:14:33,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33344 states to 33344 states and 47271 transitions. [2021-12-15 12:14:33,529 INFO L78 Accepts]: Start accepts. Automaton has 33344 states and 47271 transitions. Word has length 109 [2021-12-15 12:14:33,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:14:33,529 INFO L470 AbstractCegarLoop]: Abstraction has 33344 states and 47271 transitions. [2021-12-15 12:14:33,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 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) [2021-12-15 12:14:33,529 INFO L276 IsEmpty]: Start isEmpty. Operand 33344 states and 47271 transitions. [2021-12-15 12:14:33,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-15 12:14:33,530 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:14:33,530 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] [2021-12-15 12:14:33,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-15 12:14:33,531 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:14:33,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:14:33,531 INFO L85 PathProgramCache]: Analyzing trace with hash 171324818, now seen corresponding path program 1 times [2021-12-15 12:14:33,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:14:33,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541183253] [2021-12-15 12:14:33,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:14:33,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:14:33,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:14:33,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:14:33,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:14:33,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541183253] [2021-12-15 12:14:33,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541183253] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:14:33,569 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:14:33,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 12:14:33,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708637612] [2021-12-15 12:14:33,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:14:33,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 12:14:33,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:14:33,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 12:14:33,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 12:14:33,571 INFO L87 Difference]: Start difference. First operand 33344 states and 47271 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) [2021-12-15 12:14:35,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:14:35,088 INFO L93 Difference]: Finished difference Result 60999 states and 87725 transitions. [2021-12-15 12:14:35,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 12:14:35,088 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 [2021-12-15 12:14:35,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:14:35,144 INFO L225 Difference]: With dead ends: 60999 [2021-12-15 12:14:35,144 INFO L226 Difference]: Without dead ends: 46148 [2021-12-15 12:14:35,158 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 [2021-12-15 12:14:35,159 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 [2021-12-15 12:14:35,159 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] [2021-12-15 12:14:35,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46148 states. [2021-12-15 12:14:37,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46148 to 46146. [2021-12-15 12:14:37,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46146 states, 46144 states have (on average 1.421138176144244) internal successors, (65577), 46145 states have internal predecessors, (65577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:14:37,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46146 states to 46146 states and 65577 transitions. [2021-12-15 12:14:37,528 INFO L78 Accepts]: Start accepts. Automaton has 46146 states and 65577 transitions. Word has length 110 [2021-12-15 12:14:37,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:14:37,528 INFO L470 AbstractCegarLoop]: Abstraction has 46146 states and 65577 transitions. [2021-12-15 12:14:37,529 INFO L471 AbstractCegarLoop]: INTERPOLANT 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) [2021-12-15 12:14:37,529 INFO L276 IsEmpty]: Start isEmpty. Operand 46146 states and 65577 transitions. [2021-12-15 12:14:37,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-15 12:14:37,586 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:14:37,586 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 12:14:37,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-15 12:14:37,587 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:14:37,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:14:37,587 INFO L85 PathProgramCache]: Analyzing trace with hash 635734382, now seen corresponding path program 1 times [2021-12-15 12:14:37,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:14:37,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246795763] [2021-12-15 12:14:37,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:14:37,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:14:37,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:14:37,707 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-15 12:14:37,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:14:37,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246795763] [2021-12-15 12:14:37,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246795763] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:14:37,708 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:14:37,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-15 12:14:37,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399560162] [2021-12-15 12:14:37,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:14:37,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-15 12:14:37,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:14:37,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-15 12:14:37,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-15 12:14:37,710 INFO L87 Difference]: Start difference. First operand 46146 states and 65577 transitions. Second operand has 10 states, 10 states have (on average 13.8) internal successors, (138), 10 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)