./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label00.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label00.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 958778a599a0592241cec2803e04add83a2302d606be24f73b4e8727645b338d --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 14:44:40,464 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 14:44:40,466 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 14:44:40,530 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 14:44:40,531 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 14:44:40,534 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 14:44:40,536 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 14:44:40,539 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 14:44:40,541 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 14:44:40,547 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 14:44:40,548 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 14:44:40,549 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 14:44:40,550 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 14:44:40,555 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 14:44:40,556 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 14:44:40,558 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 14:44:40,558 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 14:44:40,560 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 14:44:40,561 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 14:44:40,565 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 14:44:40,567 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 14:44:40,568 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 14:44:40,571 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 14:44:40,572 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 14:44:40,574 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 14:44:40,575 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 14:44:40,575 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 14:44:40,576 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 14:44:40,577 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 14:44:40,578 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 14:44:40,578 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 14:44:40,579 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 14:44:40,580 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 14:44:40,581 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 14:44:40,582 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 14:44:40,582 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 14:44:40,583 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 14:44:40,583 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 14:44:40,584 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 14:44:40,584 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 14:44:40,585 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 14:44:40,586 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 14:44:40,617 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 14:44:40,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 14:44:40,618 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 14:44:40,618 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 14:44:40,619 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 14:44:40,619 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 14:44:40,619 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 14:44:40,620 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 14:44:40,620 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 14:44:40,620 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 14:44:40,621 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 14:44:40,621 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 14:44:40,621 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 14:44:40,621 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 14:44:40,622 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 14:44:40,622 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 14:44:40,622 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 14:44:40,622 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 14:44:40,622 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 14:44:40,622 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 14:44:40,623 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 14:44:40,623 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 14:44:40,623 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 14:44:40,623 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 14:44:40,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 14:44:40,624 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 14:44:40,624 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 14:44:40,624 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 14:44:40,624 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 14:44:40,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 14:44:40,624 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 14:44:40,625 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 14:44:40,625 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 14:44:40,625 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 14:44:40,625 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 958778a599a0592241cec2803e04add83a2302d606be24f73b4e8727645b338d [2021-12-21 14:44:40,816 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 14:44:40,846 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 14:44:40,849 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 14:44:40,850 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 14:44:40,850 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 14:44:40,852 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label00.c [2021-12-21 14:44:40,908 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc753b1dc/d78f295bae0f4aa3b460b2da2da0370f/FLAGd0523c165 [2021-12-21 14:44:41,505 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 14:44:41,505 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label00.c [2021-12-21 14:44:41,542 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc753b1dc/d78f295bae0f4aa3b460b2da2da0370f/FLAGd0523c165 [2021-12-21 14:44:41,646 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc753b1dc/d78f295bae0f4aa3b460b2da2da0370f [2021-12-21 14:44:41,648 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 14:44:41,649 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 14:44:41,650 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 14:44:41,650 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 14:44:41,653 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 14:44:41,653 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:44:41" (1/1) ... [2021-12-21 14:44:41,654 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6875109d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:44:41, skipping insertion in model container [2021-12-21 14:44:41,654 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:44:41" (1/1) ... [2021-12-21 14:44:41,660 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 14:44:41,784 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 14:44:42,166 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label00.c[20454,20467] [2021-12-21 14:44:42,192 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label00.c[22329,22342] [2021-12-21 14:44:42,848 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 14:44:42,857 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 14:44:42,915 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label00.c[20454,20467] [2021-12-21 14:44:42,919 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label00.c[22329,22342] [2021-12-21 14:44:43,296 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 14:44:43,322 INFO L208 MainTranslator]: Completed translation [2021-12-21 14:44:43,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:44:43 WrapperNode [2021-12-21 14:44:43,323 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 14:44:43,324 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 14:44:43,324 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 14:44:43,324 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 14:44:43,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:44:43" (1/1) ... [2021-12-21 14:44:43,382 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:44:43" (1/1) ... [2021-12-21 14:44:43,751 INFO L137 Inliner]: procedures = 39, calls = 24, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 5208 [2021-12-21 14:44:43,751 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 14:44:43,752 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 14:44:43,753 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 14:44:43,753 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 14:44:43,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:44:43" (1/1) ... [2021-12-21 14:44:43,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:44:43" (1/1) ... [2021-12-21 14:44:43,854 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:44:43" (1/1) ... [2021-12-21 14:44:43,854 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:44:43" (1/1) ... [2021-12-21 14:44:43,995 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:44:43" (1/1) ... [2021-12-21 14:44:44,015 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:44:43" (1/1) ... [2021-12-21 14:44:44,068 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:44:43" (1/1) ... [2021-12-21 14:44:44,245 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 14:44:44,246 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 14:44:44,247 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 14:44:44,247 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 14:44:44,249 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:44:43" (1/1) ... [2021-12-21 14:44:44,269 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 14:44:44,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 14:44:44,322 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) [2021-12-21 14:44:44,383 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 [2021-12-21 14:44:44,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 14:44:44,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 14:44:44,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 14:44:44,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 14:44:44,593 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 14:44:44,608 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 14:44:47,865 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 14:44:47,888 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 14:44:47,889 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-21 14:44:47,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:44:47 BoogieIcfgContainer [2021-12-21 14:44:47,892 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 14:44:47,894 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 14:44:47,894 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 14:44:47,897 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 14:44:47,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 02:44:41" (1/3) ... [2021-12-21 14:44:47,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74f4e2e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:44:47, skipping insertion in model container [2021-12-21 14:44:47,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:44:43" (2/3) ... [2021-12-21 14:44:47,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74f4e2e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:44:47, skipping insertion in model container [2021-12-21 14:44:47,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:44:47" (3/3) ... [2021-12-21 14:44:47,900 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label00.c [2021-12-21 14:44:47,905 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 14:44:47,905 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-21 14:44:47,970 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 14:44:47,980 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 [2021-12-21 14:44:47,980 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-21 14:44:48,014 INFO L276 IsEmpty]: Start isEmpty. Operand has 946 states, 943 states have (on average 1.8971367974549311) internal successors, (1789), 945 states have internal predecessors, (1789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:44:48,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-21 14:44:48,020 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:44:48,021 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:44:48,022 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:44:48,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:44:48,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1143645355, now seen corresponding path program 1 times [2021-12-21 14:44:48,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:44:48,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697674887] [2021-12-21 14:44:48,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:44:48,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:44:48,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:44:48,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:44:48,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:44:48,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697674887] [2021-12-21 14:44:48,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697674887] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:44:48,265 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:44:48,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 14:44:48,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187051834] [2021-12-21 14:44:48,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:44:48,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 14:44:48,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:44:48,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 14:44:48,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 14:44:48,306 INFO L87 Difference]: Start difference. First operand has 946 states, 943 states have (on average 1.8971367974549311) internal successors, (1789), 945 states have internal predecessors, (1789), 0 states have call successors, (0), 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 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:44:51,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:44:51,640 INFO L93 Difference]: Finished difference Result 2589 states and 4970 transitions. [2021-12-21 14:44:51,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 14:44:51,642 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2021-12-21 14:44:51,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:44:51,661 INFO L225 Difference]: With dead ends: 2589 [2021-12-21 14:44:51,662 INFO L226 Difference]: Without dead ends: 1631 [2021-12-21 14:44:51,667 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 [2021-12-21 14:44:51,670 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 1099 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2437 mSolverCounterSat, 771 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1099 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 3208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 2437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-12-21 14:44:51,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1099 Valid, 375 Invalid, 3208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [771 Valid, 2437 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-12-21 14:44:51,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1631 states. [2021-12-21 14:44:51,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1631 to 1631. [2021-12-21 14:44:51,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1631 states, 1629 states have (on average 1.8385512584407613) internal successors, (2995), 1630 states have internal predecessors, (2995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:44:51,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 2995 transitions. [2021-12-21 14:44:51,778 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 2995 transitions. Word has length 16 [2021-12-21 14:44:51,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:44:51,779 INFO L470 AbstractCegarLoop]: Abstraction has 1631 states and 2995 transitions. [2021-12-21 14:44:51,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:44:51,779 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 2995 transitions. [2021-12-21 14:44:51,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-21 14:44:51,781 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:44:51,781 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:44:51,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 14:44:51,782 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:44:51,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:44:51,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1343709944, now seen corresponding path program 1 times [2021-12-21 14:44:51,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:44:51,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16279099] [2021-12-21 14:44:51,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:44:51,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:44:51,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:44:51,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:44:51,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:44:51,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16279099] [2021-12-21 14:44:51,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16279099] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:44:51,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:44:51,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 14:44:51,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820373286] [2021-12-21 14:44:51,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:44:51,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 14:44:51,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:44:51,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 14:44:51,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 14:44:51,882 INFO L87 Difference]: Start difference. First operand 1631 states and 2995 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:44:51,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:44:51,977 INFO L93 Difference]: Finished difference Result 1705 states and 3110 transitions. [2021-12-21 14:44:51,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 14:44:51,977 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-12-21 14:44:51,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:44:51,984 INFO L225 Difference]: With dead ends: 1705 [2021-12-21 14:44:51,984 INFO L226 Difference]: Without dead ends: 1631 [2021-12-21 14:44:51,989 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 [2021-12-21 14:44:51,991 INFO L933 BasicCegarLoop]: 1654 mSDtfsCounter, 3 mSDsluCounter, 4909 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6563 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 14:44:51,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 6563 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 14:44:51,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1631 states. [2021-12-21 14:44:52,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1631 to 1631. [2021-12-21 14:44:52,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1631 states, 1629 states have (on average 1.8078575813382443) internal successors, (2945), 1630 states have internal predecessors, (2945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:44:52,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 2945 transitions. [2021-12-21 14:44:52,031 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 2945 transitions. Word has length 42 [2021-12-21 14:44:52,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:44:52,032 INFO L470 AbstractCegarLoop]: Abstraction has 1631 states and 2945 transitions. [2021-12-21 14:44:52,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:44:52,033 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 2945 transitions. [2021-12-21 14:44:52,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-12-21 14:44:52,043 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:44:52,043 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-21 14:44:52,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 14:44:52,044 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:44:52,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:44:52,046 INFO L85 PathProgramCache]: Analyzing trace with hash -979059748, now seen corresponding path program 1 times [2021-12-21 14:44:52,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:44:52,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625302808] [2021-12-21 14:44:52,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:44:52,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:44:52,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:44:52,190 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:44:52,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:44:52,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625302808] [2021-12-21 14:44:52,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625302808] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:44:52,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:44:52,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 14:44:52,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431890485] [2021-12-21 14:44:52,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:44:52,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 14:44:52,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:44:52,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 14:44:52,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 14:44:52,194 INFO L87 Difference]: Start difference. First operand 1631 states and 2945 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:44:57,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:44:57,630 INFO L93 Difference]: Finished difference Result 5388 states and 9835 transitions. [2021-12-21 14:44:57,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 14:44:57,634 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-12-21 14:44:57,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:44:57,650 INFO L225 Difference]: With dead ends: 5388 [2021-12-21 14:44:57,650 INFO L226 Difference]: Without dead ends: 3884 [2021-12-21 14:44:57,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 14:44:57,659 INFO L933 BasicCegarLoop]: 860 mSDtfsCounter, 2504 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5154 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2504 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 6307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-12-21 14:44:57,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2504 Valid, 878 Invalid, 6307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1153 Valid, 5154 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2021-12-21 14:44:57,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3884 states. [2021-12-21 14:44:57,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3884 to 3884. [2021-12-21 14:44:57,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3884 states, 3882 states have (on average 1.564657393096342) internal successors, (6074), 3883 states have internal predecessors, (6074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:44:57,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3884 states to 3884 states and 6074 transitions. [2021-12-21 14:44:57,732 INFO L78 Accepts]: Start accepts. Automaton has 3884 states and 6074 transitions. Word has length 85 [2021-12-21 14:44:57,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:44:57,733 INFO L470 AbstractCegarLoop]: Abstraction has 3884 states and 6074 transitions. [2021-12-21 14:44:57,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:44:57,733 INFO L276 IsEmpty]: Start isEmpty. Operand 3884 states and 6074 transitions. [2021-12-21 14:44:57,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-21 14:44:57,734 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:44:57,735 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-21 14:44:57,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 14:44:57,735 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:44:57,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:44:57,736 INFO L85 PathProgramCache]: Analyzing trace with hash 40288385, now seen corresponding path program 1 times [2021-12-21 14:44:57,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:44:57,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178797916] [2021-12-21 14:44:57,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:44:57,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:44:57,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:44:57,877 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:44:57,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:44:57,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178797916] [2021-12-21 14:44:57,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178797916] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:44:57,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:44:57,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 14:44:57,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826522221] [2021-12-21 14:44:57,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:44:57,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 14:44:57,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:44:57,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 14:44:57,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 14:44:57,882 INFO L87 Difference]: Start difference. First operand 3884 states and 6074 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:00,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:45:00,237 INFO L93 Difference]: Finished difference Result 10645 states and 17126 transitions. [2021-12-21 14:45:00,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 14:45:00,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-12-21 14:45:00,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:45:00,265 INFO L225 Difference]: With dead ends: 10645 [2021-12-21 14:45:00,265 INFO L226 Difference]: Without dead ends: 6888 [2021-12-21 14:45:00,273 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 [2021-12-21 14:45:00,274 INFO L933 BasicCegarLoop]: 1137 mSDtfsCounter, 775 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 2319 mSolverCounterSat, 746 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 1312 SdHoareTripleChecker+Invalid, 3065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 746 IncrementalHoareTripleChecker+Valid, 2319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-21 14:45:00,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [775 Valid, 1312 Invalid, 3065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [746 Valid, 2319 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-21 14:45:00,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6888 states. [2021-12-21 14:45:00,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6888 to 6888. [2021-12-21 14:45:00,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6888 states, 6886 states have (on average 1.5326749927388905) internal successors, (10554), 6887 states have internal predecessors, (10554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:00,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6888 states to 6888 states and 10554 transitions. [2021-12-21 14:45:00,413 INFO L78 Accepts]: Start accepts. Automaton has 6888 states and 10554 transitions. Word has length 87 [2021-12-21 14:45:00,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:45:00,413 INFO L470 AbstractCegarLoop]: Abstraction has 6888 states and 10554 transitions. [2021-12-21 14:45:00,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:00,414 INFO L276 IsEmpty]: Start isEmpty. Operand 6888 states and 10554 transitions. [2021-12-21 14:45:00,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-21 14:45:00,416 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:45:00,416 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:45:00,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 14:45:00,416 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:45:00,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:45:00,417 INFO L85 PathProgramCache]: Analyzing trace with hash -461668761, now seen corresponding path program 1 times [2021-12-21 14:45:00,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:45:00,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068191422] [2021-12-21 14:45:00,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:45:00,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:45:00,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:45:00,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:45:00,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:45:00,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068191422] [2021-12-21 14:45:00,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068191422] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:45:00,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:45:00,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 14:45:00,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464360455] [2021-12-21 14:45:00,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:45:00,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 14:45:00,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:45:00,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 14:45:00,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 14:45:00,519 INFO L87 Difference]: Start difference. First operand 6888 states and 10554 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:00,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:45:00,562 INFO L93 Difference]: Finished difference Result 7022 states and 10766 transitions. [2021-12-21 14:45:00,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 14:45:00,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-12-21 14:45:00,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:45:00,586 INFO L225 Difference]: With dead ends: 7022 [2021-12-21 14:45:00,586 INFO L226 Difference]: Without dead ends: 6952 [2021-12-21 14:45:00,589 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 [2021-12-21 14:45:00,590 INFO L933 BasicCegarLoop]: 1674 mSDtfsCounter, 1532 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1532 SdHoareTripleChecker+Valid, 1791 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 [2021-12-21 14:45:00,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1532 Valid, 1791 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 14:45:00,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6952 states. [2021-12-21 14:45:00,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6952 to 6950. [2021-12-21 14:45:00,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6950 states, 6948 states have (on average 1.5332469775474957) internal successors, (10653), 6949 states have internal predecessors, (10653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:00,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6950 states to 6950 states and 10653 transitions. [2021-12-21 14:45:00,774 INFO L78 Accepts]: Start accepts. Automaton has 6950 states and 10653 transitions. Word has length 91 [2021-12-21 14:45:00,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:45:00,777 INFO L470 AbstractCegarLoop]: Abstraction has 6950 states and 10653 transitions. [2021-12-21 14:45:00,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:00,778 INFO L276 IsEmpty]: Start isEmpty. Operand 6950 states and 10653 transitions. [2021-12-21 14:45:00,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-21 14:45:00,783 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:45:00,783 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:45:00,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 14:45:00,783 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:45:00,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:45:00,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1207251491, now seen corresponding path program 1 times [2021-12-21 14:45:00,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:45:00,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851244893] [2021-12-21 14:45:00,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:45:00,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:45:00,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:45:00,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:45:00,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:45:00,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851244893] [2021-12-21 14:45:00,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851244893] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:45:00,855 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:45:00,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 14:45:00,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383509651] [2021-12-21 14:45:00,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:45:00,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 14:45:00,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:45:00,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 14:45:00,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 14:45:00,857 INFO L87 Difference]: Start difference. First operand 6950 states and 10653 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:00,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:45:00,909 INFO L93 Difference]: Finished difference Result 7202 states and 11053 transitions. [2021-12-21 14:45:00,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 14:45:00,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-12-21 14:45:00,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:45:00,932 INFO L225 Difference]: With dead ends: 7202 [2021-12-21 14:45:00,932 INFO L226 Difference]: Without dead ends: 7070 [2021-12-21 14:45:00,935 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 [2021-12-21 14:45:00,936 INFO L933 BasicCegarLoop]: 1669 mSDtfsCounter, 1528 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1528 SdHoareTripleChecker+Valid, 1790 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 [2021-12-21 14:45:00,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1528 Valid, 1790 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 14:45:00,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7070 states. [2021-12-21 14:45:01,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7070 to 7068. [2021-12-21 14:45:01,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7068 states, 7066 states have (on average 1.5341069912255874) internal successors, (10840), 7067 states have internal predecessors, (10840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:01,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7068 states to 7068 states and 10840 transitions. [2021-12-21 14:45:01,080 INFO L78 Accepts]: Start accepts. Automaton has 7068 states and 10840 transitions. Word has length 91 [2021-12-21 14:45:01,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:45:01,081 INFO L470 AbstractCegarLoop]: Abstraction has 7068 states and 10840 transitions. [2021-12-21 14:45:01,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:01,082 INFO L276 IsEmpty]: Start isEmpty. Operand 7068 states and 10840 transitions. [2021-12-21 14:45:01,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-21 14:45:01,083 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:45:01,083 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:45:01,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 14:45:01,084 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:45:01,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:45:01,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1147684947, now seen corresponding path program 1 times [2021-12-21 14:45:01,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:45:01,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101095933] [2021-12-21 14:45:01,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:45:01,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:45:01,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:45:01,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:45:01,134 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:45:01,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101095933] [2021-12-21 14:45:01,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101095933] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:45:01,134 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:45:01,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 14:45:01,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325425677] [2021-12-21 14:45:01,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:45:01,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 14:45:01,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:45:01,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 14:45:01,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 14:45:01,136 INFO L87 Difference]: Start difference. First operand 7068 states and 10840 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:01,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:45:01,192 INFO L93 Difference]: Finished difference Result 7544 states and 11594 transitions. [2021-12-21 14:45:01,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 14:45:01,192 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-12-21 14:45:01,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:45:01,207 INFO L225 Difference]: With dead ends: 7544 [2021-12-21 14:45:01,208 INFO L226 Difference]: Without dead ends: 7294 [2021-12-21 14:45:01,210 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 [2021-12-21 14:45:01,210 INFO L933 BasicCegarLoop]: 1664 mSDtfsCounter, 1524 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1524 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 14:45:01,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1524 Valid, 1789 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 14:45:01,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7294 states. [2021-12-21 14:45:01,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7294 to 7292. [2021-12-21 14:45:01,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7292 states, 7290 states have (on average 1.5352537722908093) internal successors, (11192), 7291 states have internal predecessors, (11192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:01,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7292 states to 7292 states and 11192 transitions. [2021-12-21 14:45:01,321 INFO L78 Accepts]: Start accepts. Automaton has 7292 states and 11192 transitions. Word has length 91 [2021-12-21 14:45:01,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:45:01,321 INFO L470 AbstractCegarLoop]: Abstraction has 7292 states and 11192 transitions. [2021-12-21 14:45:01,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:01,322 INFO L276 IsEmpty]: Start isEmpty. Operand 7292 states and 11192 transitions. [2021-12-21 14:45:01,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-21 14:45:01,323 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:45:01,323 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:45:01,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 14:45:01,323 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:45:01,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:45:01,325 INFO L85 PathProgramCache]: Analyzing trace with hash -446599735, now seen corresponding path program 1 times [2021-12-21 14:45:01,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:45:01,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087579662] [2021-12-21 14:45:01,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:45:01,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:45:01,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:45:01,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:45:01,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:45:01,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087579662] [2021-12-21 14:45:01,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087579662] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:45:01,383 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:45:01,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 14:45:01,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883639908] [2021-12-21 14:45:01,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:45:01,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 14:45:01,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:45:01,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 14:45:01,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 14:45:01,385 INFO L87 Difference]: Start difference. First operand 7292 states and 11192 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:01,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:45:01,458 INFO L93 Difference]: Finished difference Result 8192 states and 12610 transitions. [2021-12-21 14:45:01,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 14:45:01,459 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-12-21 14:45:01,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:45:01,476 INFO L225 Difference]: With dead ends: 8192 [2021-12-21 14:45:01,476 INFO L226 Difference]: Without dead ends: 7718 [2021-12-21 14:45:01,480 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 [2021-12-21 14:45:01,480 INFO L933 BasicCegarLoop]: 1659 mSDtfsCounter, 1520 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1520 SdHoareTripleChecker+Valid, 1788 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 [2021-12-21 14:45:01,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1520 Valid, 1788 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 14:45:01,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7718 states. [2021-12-21 14:45:01,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7718 to 7716. [2021-12-21 14:45:01,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7716 states, 7714 states have (on average 1.5364272750842625) internal successors, (11852), 7715 states have internal predecessors, (11852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:01,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7716 states to 7716 states and 11852 transitions. [2021-12-21 14:45:01,606 INFO L78 Accepts]: Start accepts. Automaton has 7716 states and 11852 transitions. Word has length 91 [2021-12-21 14:45:01,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:45:01,606 INFO L470 AbstractCegarLoop]: Abstraction has 7716 states and 11852 transitions. [2021-12-21 14:45:01,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:01,606 INFO L276 IsEmpty]: Start isEmpty. Operand 7716 states and 11852 transitions. [2021-12-21 14:45:01,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-21 14:45:01,607 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:45:01,607 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:45:01,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 14:45:01,608 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:45:01,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:45:01,609 INFO L85 PathProgramCache]: Analyzing trace with hash -108806593, now seen corresponding path program 1 times [2021-12-21 14:45:01,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:45:01,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847977852] [2021-12-21 14:45:01,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:45:01,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:45:01,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:45:01,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:45:01,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:45:01,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847977852] [2021-12-21 14:45:01,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847977852] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:45:01,651 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:45:01,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 14:45:01,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138604194] [2021-12-21 14:45:01,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:45:01,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 14:45:01,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:45:01,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 14:45:01,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 14:45:01,653 INFO L87 Difference]: Start difference. First operand 7716 states and 11852 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:01,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:45:01,790 INFO L93 Difference]: Finished difference Result 9416 states and 14510 transitions. [2021-12-21 14:45:01,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 14:45:01,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-12-21 14:45:01,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:45:01,805 INFO L225 Difference]: With dead ends: 9416 [2021-12-21 14:45:01,805 INFO L226 Difference]: Without dead ends: 8518 [2021-12-21 14:45:01,809 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 [2021-12-21 14:45:01,810 INFO L933 BasicCegarLoop]: 1654 mSDtfsCounter, 1516 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 1787 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 [2021-12-21 14:45:01,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1516 Valid, 1787 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 14:45:01,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8518 states. [2021-12-21 14:45:01,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8518 to 8516. [2021-12-21 14:45:01,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8516 states, 8514 states have (on average 1.5367629786234438) internal successors, (13084), 8515 states have internal predecessors, (13084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:01,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8516 states to 8516 states and 13084 transitions. [2021-12-21 14:45:01,986 INFO L78 Accepts]: Start accepts. Automaton has 8516 states and 13084 transitions. Word has length 91 [2021-12-21 14:45:01,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:45:01,986 INFO L470 AbstractCegarLoop]: Abstraction has 8516 states and 13084 transitions. [2021-12-21 14:45:01,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:01,987 INFO L276 IsEmpty]: Start isEmpty. Operand 8516 states and 13084 transitions. [2021-12-21 14:45:01,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-21 14:45:01,988 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:45:01,988 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:45:01,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-21 14:45:01,988 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:45:01,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:45:01,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1109178805, now seen corresponding path program 1 times [2021-12-21 14:45:01,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:45:01,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070708598] [2021-12-21 14:45:01,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:45:01,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:45:02,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:45:02,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:45:02,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:45:02,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070708598] [2021-12-21 14:45:02,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070708598] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:45:02,070 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:45:02,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 14:45:02,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439869858] [2021-12-21 14:45:02,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:45:02,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 14:45:02,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:45:02,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 14:45:02,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-21 14:45:02,072 INFO L87 Difference]: Start difference. First operand 8516 states and 13084 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:03,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:45:03,403 INFO L93 Difference]: Finished difference Result 32288 states and 50058 transitions. [2021-12-21 14:45:03,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 14:45:03,404 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-12-21 14:45:03,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:45:03,476 INFO L225 Difference]: With dead ends: 32288 [2021-12-21 14:45:03,476 INFO L226 Difference]: Without dead ends: 30590 [2021-12-21 14:45:03,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2021-12-21 14:45:03,493 INFO L933 BasicCegarLoop]: 1600 mSDtfsCounter, 12616 mSDsluCounter, 2508 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12616 SdHoareTripleChecker+Valid, 4108 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 14:45:03,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12616 Valid, 4108 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 14:45:03,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30590 states. [2021-12-21 14:45:03,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30590 to 10212. [2021-12-21 14:45:03,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10212 states, 10210 states have (on average 1.5337904015670911) internal successors, (15660), 10211 states have internal predecessors, (15660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:03,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10212 states to 10212 states and 15660 transitions. [2021-12-21 14:45:03,908 INFO L78 Accepts]: Start accepts. Automaton has 10212 states and 15660 transitions. Word has length 91 [2021-12-21 14:45:03,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:45:03,909 INFO L470 AbstractCegarLoop]: Abstraction has 10212 states and 15660 transitions. [2021-12-21 14:45:03,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:03,909 INFO L276 IsEmpty]: Start isEmpty. Operand 10212 states and 15660 transitions. [2021-12-21 14:45:03,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-21 14:45:03,910 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:45:03,910 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:45:03,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-21 14:45:03,911 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:45:03,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:45:03,911 INFO L85 PathProgramCache]: Analyzing trace with hash -646747483, now seen corresponding path program 1 times [2021-12-21 14:45:03,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:45:03,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622740673] [2021-12-21 14:45:03,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:45:03,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:45:03,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:45:03,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:45:03,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:45:03,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622740673] [2021-12-21 14:45:03,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622740673] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:45:03,957 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:45:03,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 14:45:03,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996585250] [2021-12-21 14:45:03,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:45:03,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 14:45:03,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:45:03,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 14:45:03,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 14:45:03,959 INFO L87 Difference]: Start difference. First operand 10212 states and 15660 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:04,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:45:04,464 INFO L93 Difference]: Finished difference Result 16648 states and 25486 transitions. [2021-12-21 14:45:04,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 14:45:04,465 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-12-21 14:45:04,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:45:04,488 INFO L225 Difference]: With dead ends: 16648 [2021-12-21 14:45:04,488 INFO L226 Difference]: Without dead ends: 13254 [2021-12-21 14:45:04,498 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 [2021-12-21 14:45:04,499 INFO L933 BasicCegarLoop]: 1602 mSDtfsCounter, 1507 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 1706 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 [2021-12-21 14:45:04,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1507 Valid, 1706 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 14:45:04,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13254 states. [2021-12-21 14:45:05,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13254 to 13188. [2021-12-21 14:45:05,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13188 states, 13186 states have (on average 1.5200970726528136) internal successors, (20044), 13187 states have internal predecessors, (20044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:05,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13188 states to 13188 states and 20044 transitions. [2021-12-21 14:45:05,051 INFO L78 Accepts]: Start accepts. Automaton has 13188 states and 20044 transitions. Word has length 93 [2021-12-21 14:45:05,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:45:05,051 INFO L470 AbstractCegarLoop]: Abstraction has 13188 states and 20044 transitions. [2021-12-21 14:45:05,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:05,052 INFO L276 IsEmpty]: Start isEmpty. Operand 13188 states and 20044 transitions. [2021-12-21 14:45:05,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-21 14:45:05,053 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:45:05,053 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:45:05,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-21 14:45:05,054 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:45:05,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:45:05,054 INFO L85 PathProgramCache]: Analyzing trace with hash -580253971, now seen corresponding path program 1 times [2021-12-21 14:45:05,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:45:05,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188821765] [2021-12-21 14:45:05,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:45:05,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:45:05,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:45:05,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:45:05,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:45:05,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188821765] [2021-12-21 14:45:05,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188821765] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:45:05,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:45:05,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 14:45:05,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138308551] [2021-12-21 14:45:05,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:45:05,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 14:45:05,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:45:05,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 14:45:05,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-21 14:45:05,323 INFO L87 Difference]: Start difference. First operand 13188 states and 20044 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:06,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:45:06,188 INFO L93 Difference]: Finished difference Result 19560 states and 29646 transitions. [2021-12-21 14:45:06,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 14:45:06,189 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-12-21 14:45:06,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:45:06,212 INFO L225 Difference]: With dead ends: 19560 [2021-12-21 14:45:06,213 INFO L226 Difference]: Without dead ends: 13190 [2021-12-21 14:45:06,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2021-12-21 14:45:06,222 INFO L933 BasicCegarLoop]: 1644 mSDtfsCounter, 4941 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4941 SdHoareTripleChecker+Valid, 2301 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 14:45:06,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4941 Valid, 2301 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 14:45:06,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13190 states. [2021-12-21 14:45:06,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13190 to 13188. [2021-12-21 14:45:06,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13188 states, 13186 states have (on average 1.5152434400121342) internal successors, (19980), 13187 states have internal predecessors, (19980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:06,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13188 states to 13188 states and 19980 transitions. [2021-12-21 14:45:06,739 INFO L78 Accepts]: Start accepts. Automaton has 13188 states and 19980 transitions. Word has length 93 [2021-12-21 14:45:06,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:45:06,739 INFO L470 AbstractCegarLoop]: Abstraction has 13188 states and 19980 transitions. [2021-12-21 14:45:06,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:06,739 INFO L276 IsEmpty]: Start isEmpty. Operand 13188 states and 19980 transitions. [2021-12-21 14:45:06,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-21 14:45:06,740 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:45:06,741 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:45:06,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-21 14:45:06,741 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:45:06,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:45:06,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1326262359, now seen corresponding path program 1 times [2021-12-21 14:45:06,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:45:06,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201286399] [2021-12-21 14:45:06,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:45:06,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:45:06,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:45:06,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:45:06,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:45:06,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201286399] [2021-12-21 14:45:06,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201286399] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:45:06,773 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:45:06,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 14:45:06,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632373014] [2021-12-21 14:45:06,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:45:06,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 14:45:06,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:45:06,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 14:45:06,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 14:45:06,775 INFO L87 Difference]: Start difference. First operand 13188 states and 19980 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:07,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:45:07,527 INFO L93 Difference]: Finished difference Result 25160 states and 37774 transitions. [2021-12-21 14:45:07,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 14:45:07,527 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-12-21 14:45:07,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:45:07,556 INFO L225 Difference]: With dead ends: 25160 [2021-12-21 14:45:07,557 INFO L226 Difference]: Without dead ends: 18790 [2021-12-21 14:45:07,569 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 [2021-12-21 14:45:07,570 INFO L933 BasicCegarLoop]: 1688 mSDtfsCounter, 1536 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1536 SdHoareTripleChecker+Valid, 1801 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 14:45:07,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1536 Valid, 1801 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 14:45:07,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18790 states. [2021-12-21 14:45:08,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18790 to 18788. [2021-12-21 14:45:08,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18788 states, 18786 states have (on average 1.4962205898009155) internal successors, (28108), 18787 states have internal predecessors, (28108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:08,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18788 states to 18788 states and 28108 transitions. [2021-12-21 14:45:08,535 INFO L78 Accepts]: Start accepts. Automaton has 18788 states and 28108 transitions. Word has length 93 [2021-12-21 14:45:08,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:45:08,535 INFO L470 AbstractCegarLoop]: Abstraction has 18788 states and 28108 transitions. [2021-12-21 14:45:08,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:08,536 INFO L276 IsEmpty]: Start isEmpty. Operand 18788 states and 28108 transitions. [2021-12-21 14:45:08,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-21 14:45:08,537 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:45:08,537 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:45:08,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-21 14:45:08,537 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:45:08,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:45:08,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1222726774, now seen corresponding path program 1 times [2021-12-21 14:45:08,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:45:08,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158829297] [2021-12-21 14:45:08,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:45:08,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:45:08,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:45:08,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:45:08,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:45:08,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158829297] [2021-12-21 14:45:08,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158829297] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:45:08,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:45:08,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 14:45:08,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722685559] [2021-12-21 14:45:08,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:45:08,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 14:45:08,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:45:08,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 14:45:08,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-21 14:45:08,630 INFO L87 Difference]: Start difference. First operand 18788 states and 28108 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:10,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:45:10,146 INFO L93 Difference]: Finished difference Result 27658 states and 41020 transitions. [2021-12-21 14:45:10,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 14:45:10,147 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-12-21 14:45:10,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:45:10,190 INFO L225 Difference]: With dead ends: 27658 [2021-12-21 14:45:10,190 INFO L226 Difference]: Without dead ends: 27656 [2021-12-21 14:45:10,202 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 [2021-12-21 14:45:10,202 INFO L933 BasicCegarLoop]: 1659 mSDtfsCounter, 801 mSDsluCounter, 9281 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 801 SdHoareTripleChecker+Valid, 10940 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 [2021-12-21 14:45:10,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [801 Valid, 10940 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 14:45:10,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27656 states. [2021-12-21 14:45:11,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27656 to 19172. [2021-12-21 14:45:11,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19172 states, 19170 states have (on average 1.482942097026604) internal successors, (28428), 19171 states have internal predecessors, (28428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:11,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19172 states to 19172 states and 28428 transitions. [2021-12-21 14:45:11,326 INFO L78 Accepts]: Start accepts. Automaton has 19172 states and 28428 transitions. Word has length 94 [2021-12-21 14:45:11,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:45:11,327 INFO L470 AbstractCegarLoop]: Abstraction has 19172 states and 28428 transitions. [2021-12-21 14:45:11,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:11,327 INFO L276 IsEmpty]: Start isEmpty. Operand 19172 states and 28428 transitions. [2021-12-21 14:45:11,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-21 14:45:11,328 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:45:11,328 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] [2021-12-21 14:45:11,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-21 14:45:11,328 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:45:11,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:45:11,329 INFO L85 PathProgramCache]: Analyzing trace with hash -362720764, now seen corresponding path program 1 times [2021-12-21 14:45:11,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:45:11,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290473820] [2021-12-21 14:45:11,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:45:11,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:45:11,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:45:11,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:45:11,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:45:11,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290473820] [2021-12-21 14:45:11,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290473820] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:45:11,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:45:11,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 14:45:11,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088368445] [2021-12-21 14:45:11,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:45:11,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 14:45:11,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:45:11,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 14:45:11,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 14:45:11,365 INFO L87 Difference]: Start difference. First operand 19172 states and 28428 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:12,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:45:12,892 INFO L93 Difference]: Finished difference Result 31723 states and 46866 transitions. [2021-12-21 14:45:12,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 14:45:12,893 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-12-21 14:45:12,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:45:12,927 INFO L225 Difference]: With dead ends: 31723 [2021-12-21 14:45:12,927 INFO L226 Difference]: Without dead ends: 24936 [2021-12-21 14:45:12,943 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 [2021-12-21 14:45:12,944 INFO L933 BasicCegarLoop]: 1696 mSDtfsCounter, 1537 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1537 SdHoareTripleChecker+Valid, 1805 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 [2021-12-21 14:45:12,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1537 Valid, 1805 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 14:45:12,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24936 states. [2021-12-21 14:45:14,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24936 to 24934. [2021-12-21 14:45:14,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24934 states, 24932 states have (on average 1.4714423231188833) internal successors, (36686), 24933 states have internal predecessors, (36686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:14,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24934 states to 24934 states and 36686 transitions. [2021-12-21 14:45:14,428 INFO L78 Accepts]: Start accepts. Automaton has 24934 states and 36686 transitions. Word has length 95 [2021-12-21 14:45:14,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:45:14,428 INFO L470 AbstractCegarLoop]: Abstraction has 24934 states and 36686 transitions. [2021-12-21 14:45:14,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:14,428 INFO L276 IsEmpty]: Start isEmpty. Operand 24934 states and 36686 transitions. [2021-12-21 14:45:14,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-21 14:45:14,436 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:45:14,436 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:45:14,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-21 14:45:14,437 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:45:14,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:45:14,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1202553482, now seen corresponding path program 1 times [2021-12-21 14:45:14,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:45:14,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097823773] [2021-12-21 14:45:14,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:45:14,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:45:14,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:45:14,535 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-21 14:45:14,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:45:14,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097823773] [2021-12-21 14:45:14,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097823773] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:45:14,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:45:14,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 14:45:14,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11738841] [2021-12-21 14:45:14,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:45:14,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 14:45:14,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:45:14,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 14:45:14,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-21 14:45:14,537 INFO L87 Difference]: Start difference. First operand 24934 states and 36686 transitions. Second operand has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:24,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:45:24,577 INFO L93 Difference]: Finished difference Result 155254 states and 225302 transitions. [2021-12-21 14:45:24,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 14:45:24,578 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-12-21 14:45:24,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:45:24,787 INFO L225 Difference]: With dead ends: 155254 [2021-12-21 14:45:24,787 INFO L226 Difference]: Without dead ends: 137140 [2021-12-21 14:45:24,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-12-21 14:45:24,831 INFO L933 BasicCegarLoop]: 1708 mSDtfsCounter, 10875 mSDsluCounter, 2449 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10875 SdHoareTripleChecker+Valid, 4157 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 14:45:24,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10875 Valid, 4157 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 14:45:24,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137140 states. [2021-12-21 14:45:28,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137140 to 43046. [2021-12-21 14:45:28,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43046 states, 43044 states have (on average 1.4574388997305083) internal successors, (62734), 43045 states have internal predecessors, (62734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:28,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43046 states to 43046 states and 62734 transitions. [2021-12-21 14:45:28,856 INFO L78 Accepts]: Start accepts. Automaton has 43046 states and 62734 transitions. Word has length 130 [2021-12-21 14:45:28,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:45:28,856 INFO L470 AbstractCegarLoop]: Abstraction has 43046 states and 62734 transitions. [2021-12-21 14:45:28,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:28,856 INFO L276 IsEmpty]: Start isEmpty. Operand 43046 states and 62734 transitions. [2021-12-21 14:45:28,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-21 14:45:28,867 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:45:28,867 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:45:28,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-21 14:45:28,867 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:45:28,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:45:28,868 INFO L85 PathProgramCache]: Analyzing trace with hash -566229334, now seen corresponding path program 1 times [2021-12-21 14:45:28,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:45:28,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448727994] [2021-12-21 14:45:28,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:45:28,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:45:28,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:45:28,963 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-21 14:45:28,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:45:28,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448727994] [2021-12-21 14:45:28,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448727994] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:45:28,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:45:28,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 14:45:28,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430724711] [2021-12-21 14:45:28,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:45:28,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 14:45:28,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:45:28,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 14:45:28,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-21 14:45:28,966 INFO L87 Difference]: Start difference. First operand 43046 states and 62734 transitions. Second operand has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 9 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)