./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.6_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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.6_overflow.ufo.UNBOUNDED.pals+Problem12_label04.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 d88f56b65c964ba52afb6589890f47808246433fd1cd2f6e6c97070f65703887 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 07:54:47,257 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 07:54:47,259 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 07:54:47,302 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 07:54:47,302 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 07:54:47,304 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 07:54:47,307 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 07:54:47,309 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 07:54:47,311 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 07:54:47,315 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 07:54:47,316 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 07:54:47,317 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 07:54:47,317 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 07:54:47,318 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 07:54:47,319 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 07:54:47,319 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 07:54:47,320 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 07:54:47,320 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 07:54:47,321 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 07:54:47,323 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 07:54:47,324 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 07:54:47,324 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 07:54:47,325 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 07:54:47,326 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 07:54:47,327 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 07:54:47,329 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 07:54:47,329 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 07:54:47,329 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 07:54:47,330 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 07:54:47,330 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 07:54:47,331 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 07:54:47,331 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 07:54:47,333 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 07:54:47,334 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 07:54:47,335 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 07:54:47,339 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 07:54:47,339 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 07:54:47,340 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 07:54:47,340 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 07:54:47,341 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 07:54:47,342 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 07:54:47,344 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 07:54:47,345 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 07:54:47,381 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 07:54:47,381 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 07:54:47,381 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 07:54:47,382 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 07:54:47,382 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 07:54:47,382 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 07:54:47,383 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 07:54:47,383 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 07:54:47,383 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 07:54:47,384 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 07:54:47,384 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 07:54:47,384 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 07:54:47,385 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 07:54:47,385 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 07:54:47,385 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 07:54:47,385 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 07:54:47,385 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 07:54:47,385 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 07:54:47,385 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 07:54:47,386 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 07:54:47,386 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 07:54:47,386 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 07:54:47,386 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 07:54:47,386 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 07:54:47,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 07:54:47,386 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 07:54:47,387 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 07:54:47,387 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 07:54:47,387 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 07:54:47,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 07:54:47,387 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 07:54:47,387 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 07:54:47,388 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 07:54:47,388 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d88f56b65c964ba52afb6589890f47808246433fd1cd2f6e6c97070f65703887 [2022-07-21 07:54:47,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 07:54:47,683 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 07:54:47,685 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 07:54:47,686 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 07:54:47,686 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 07:54:47,688 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.6_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c [2022-07-21 07:54:47,731 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e5bc5439/9b2338eae27c415698b495ee8c1b8ef4/FLAG5c721a808 [2022-07-21 07:54:48,349 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 07:54:48,350 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.6_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c [2022-07-21 07:54:48,371 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e5bc5439/9b2338eae27c415698b495ee8c1b8ef4/FLAG5c721a808 [2022-07-21 07:54:48,765 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e5bc5439/9b2338eae27c415698b495ee8c1b8ef4 [2022-07-21 07:54:48,767 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 07:54:48,768 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 07:54:48,768 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 07:54:48,769 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 07:54:48,771 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 07:54:48,771 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:54:48" (1/1) ... [2022-07-21 07:54:48,773 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31d4fb0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:54:48, skipping insertion in model container [2022-07-21 07:54:48,773 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:54:48" (1/1) ... [2022-07-21 07:54:48,778 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 07:54:48,867 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 07:54:49,120 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.6_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c[15584,15597] [2022-07-21 07:54:49,161 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.6_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c[22645,22658] [2022-07-21 07:54:49,694 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 07:54:49,701 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 07:54:49,740 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.6_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c[15584,15597] [2022-07-21 07:54:49,749 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.6_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c[22645,22658] [2022-07-21 07:54:50,085 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 07:54:50,109 INFO L208 MainTranslator]: Completed translation [2022-07-21 07:54:50,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:54:50 WrapperNode [2022-07-21 07:54:50,110 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 07:54:50,111 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 07:54:50,112 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 07:54:50,112 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 07:54:50,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:54:50" (1/1) ... [2022-07-21 07:54:50,167 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:54:50" (1/1) ... [2022-07-21 07:54:50,534 INFO L137 Inliner]: procedures = 38, calls = 23, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 5145 [2022-07-21 07:54:50,535 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 07:54:50,536 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 07:54:50,536 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 07:54:50,536 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 07:54:50,543 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:54:50" (1/1) ... [2022-07-21 07:54:50,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:54:50" (1/1) ... [2022-07-21 07:54:50,596 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:54:50" (1/1) ... [2022-07-21 07:54:50,597 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:54:50" (1/1) ... [2022-07-21 07:54:50,722 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:54:50" (1/1) ... [2022-07-21 07:54:50,749 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:54:50" (1/1) ... [2022-07-21 07:54:50,797 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:54:50" (1/1) ... [2022-07-21 07:54:50,856 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 07:54:50,857 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 07:54:50,857 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 07:54:50,891 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 07:54:50,892 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:54:50" (1/1) ... [2022-07-21 07:54:50,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 07:54:50,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 07:54:50,931 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) [2022-07-21 07:54:50,952 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 [2022-07-21 07:54:50,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 07:54:50,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 07:54:50,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 07:54:50,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 07:54:51,051 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 07:54:51,053 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 07:54:54,105 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 07:54:54,115 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 07:54:54,115 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-21 07:54:54,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:54:54 BoogieIcfgContainer [2022-07-21 07:54:54,117 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 07:54:54,118 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 07:54:54,118 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 07:54:54,120 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 07:54:54,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 07:54:48" (1/3) ... [2022-07-21 07:54:54,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@454d560 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:54:54, skipping insertion in model container [2022-07-21 07:54:54,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:54:50" (2/3) ... [2022-07-21 07:54:54,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@454d560 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:54:54, skipping insertion in model container [2022-07-21 07:54:54,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:54:54" (3/3) ... [2022-07-21 07:54:54,122 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c [2022-07-21 07:54:54,131 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 07:54:54,131 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-21 07:54:54,183 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 07:54:54,188 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@47167426, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@555387cb [2022-07-21 07:54:54,188 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-21 07:54:54,195 INFO L276 IsEmpty]: Start isEmpty. Operand has 926 states, 923 states have (on average 1.8992416034669555) internal successors, (1753), 925 states have internal predecessors, (1753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:54:54,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-21 07:54:54,202 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:54:54,203 INFO L195 NwaCegarLoop]: 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] [2022-07-21 07:54:54,211 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:54:54,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:54:54,216 INFO L85 PathProgramCache]: Analyzing trace with hash 340623278, now seen corresponding path program 1 times [2022-07-21 07:54:54,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:54:54,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280953900] [2022-07-21 07:54:54,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:54:54,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:54:54,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:54:54,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:54:54,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:54:54,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280953900] [2022-07-21 07:54:54,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280953900] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:54:54,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:54:54,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 07:54:54,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670964040] [2022-07-21 07:54:54,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:54:54,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 07:54:54,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:54:54,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 07:54:54,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 07:54:54,428 INFO L87 Difference]: Start difference. First operand has 926 states, 923 states have (on average 1.8992416034669555) internal successors, (1753), 925 states have internal predecessors, (1753), 0 states have call successors, (0), 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 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:54:54,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:54:54,488 INFO L93 Difference]: Finished difference Result 1804 states and 3416 transitions. [2022-07-21 07:54:54,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 07:54:54,490 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-07-21 07:54:54,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:54:54,508 INFO L225 Difference]: With dead ends: 1804 [2022-07-21 07:54:54,508 INFO L226 Difference]: Without dead ends: 860 [2022-07-21 07:54:54,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 07:54:54,522 INFO L413 NwaCegarLoop]: 1684 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1684 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:54:54,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1684 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:54:54,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2022-07-21 07:54:54,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 860. [2022-07-21 07:54:54,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 860 states, 858 states have (on average 1.8881118881118881) internal successors, (1620), 859 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:54:54,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 1620 transitions. [2022-07-21 07:54:54,583 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 1620 transitions. Word has length 38 [2022-07-21 07:54:54,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:54:54,584 INFO L495 AbstractCegarLoop]: Abstraction has 860 states and 1620 transitions. [2022-07-21 07:54:54,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:54:54,584 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 1620 transitions. [2022-07-21 07:54:54,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-21 07:54:54,585 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:54:54,586 INFO L195 NwaCegarLoop]: 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] [2022-07-21 07:54:54,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 07:54:54,586 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:54:54,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:54:54,587 INFO L85 PathProgramCache]: Analyzing trace with hash 615382892, now seen corresponding path program 1 times [2022-07-21 07:54:54,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:54:54,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546300274] [2022-07-21 07:54:54,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:54:54,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:54:54,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:54:54,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:54:54,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:54:54,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546300274] [2022-07-21 07:54:54,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546300274] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:54:54,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:54:54,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 07:54:54,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790370642] [2022-07-21 07:54:54,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:54:54,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 07:54:54,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:54:54,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 07:54:54,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 07:54:54,651 INFO L87 Difference]: Start difference. First operand 860 states and 1620 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:54:54,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:54:54,770 INFO L93 Difference]: Finished difference Result 924 states and 1719 transitions. [2022-07-21 07:54:54,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 07:54:54,770 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-07-21 07:54:54,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:54:54,773 INFO L225 Difference]: With dead ends: 924 [2022-07-21 07:54:54,773 INFO L226 Difference]: Without dead ends: 860 [2022-07-21 07:54:54,774 INFO L412 NwaCegarLoop]: 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 [2022-07-21 07:54:54,774 INFO L413 NwaCegarLoop]: 1618 mSDtfsCounter, 3 mSDsluCounter, 4811 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6429 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 07:54:54,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6429 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 07:54:54,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2022-07-21 07:54:54,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 860. [2022-07-21 07:54:54,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 860 states, 858 states have (on average 1.8414918414918415) internal successors, (1580), 859 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:54:54,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 1580 transitions. [2022-07-21 07:54:54,790 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 1580 transitions. Word has length 38 [2022-07-21 07:54:54,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:54:54,790 INFO L495 AbstractCegarLoop]: Abstraction has 860 states and 1580 transitions. [2022-07-21 07:54:54,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:54:54,791 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 1580 transitions. [2022-07-21 07:54:54,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-21 07:54:54,792 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:54:54,792 INFO L195 NwaCegarLoop]: 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] [2022-07-21 07:54:54,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 07:54:54,792 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:54:54,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:54:54,793 INFO L85 PathProgramCache]: Analyzing trace with hash 642093148, now seen corresponding path program 1 times [2022-07-21 07:54:54,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:54:54,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69257468] [2022-07-21 07:54:54,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:54:54,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:54:54,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:54:54,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:54:54,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:54:54,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69257468] [2022-07-21 07:54:54,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69257468] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:54:54,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:54:54,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 07:54:54,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249584048] [2022-07-21 07:54:54,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:54:54,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 07:54:54,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:54:54,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 07:54:54,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 07:54:54,916 INFO L87 Difference]: Start difference. First operand 860 states and 1580 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:55:00,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:55:00,135 INFO L93 Difference]: Finished difference Result 3115 states and 5889 transitions. [2022-07-21 07:55:00,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 07:55:00,140 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2022-07-21 07:55:00,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:55:00,150 INFO L225 Difference]: With dead ends: 3115 [2022-07-21 07:55:00,150 INFO L226 Difference]: Without dead ends: 2362 [2022-07-21 07:55:00,151 INFO L412 NwaCegarLoop]: 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 [2022-07-21 07:55:00,152 INFO L413 NwaCegarLoop]: 834 mSDtfsCounter, 2474 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5154 mSolverCounterSat, 1250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2474 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 6404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1250 IncrementalHoareTripleChecker+Valid, 5154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-07-21 07:55:00,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2474 Valid, 852 Invalid, 6404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1250 Valid, 5154 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-07-21 07:55:00,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2362 states. [2022-07-21 07:55:00,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2362 to 2362. [2022-07-21 07:55:00,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2362 states, 2360 states have (on average 1.506779661016949) internal successors, (3556), 2361 states have internal predecessors, (3556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:55:00,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2362 states to 2362 states and 3556 transitions. [2022-07-21 07:55:00,196 INFO L78 Accepts]: Start accepts. Automaton has 2362 states and 3556 transitions. Word has length 61 [2022-07-21 07:55:00,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:55:00,197 INFO L495 AbstractCegarLoop]: Abstraction has 2362 states and 3556 transitions. [2022-07-21 07:55:00,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:55:00,198 INFO L276 IsEmpty]: Start isEmpty. Operand 2362 states and 3556 transitions. [2022-07-21 07:55:00,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-21 07:55:00,203 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:55:00,203 INFO L195 NwaCegarLoop]: 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] [2022-07-21 07:55:00,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 07:55:00,204 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:55:00,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:55:00,206 INFO L85 PathProgramCache]: Analyzing trace with hash -2101054792, now seen corresponding path program 1 times [2022-07-21 07:55:00,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:55:00,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078100850] [2022-07-21 07:55:00,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:55:00,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:55:00,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:55:00,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:55:00,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:55:00,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078100850] [2022-07-21 07:55:00,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078100850] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:55:00,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:55:00,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 07:55:00,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475493657] [2022-07-21 07:55:00,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:55:00,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:55:00,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:55:00,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:55:00,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:55:00,308 INFO L87 Difference]: Start difference. First operand 2362 states and 3556 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:55:00,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:55:00,339 INFO L93 Difference]: Finished difference Result 2476 states and 3736 transitions. [2022-07-21 07:55:00,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:55:00,340 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-07-21 07:55:00,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:55:00,349 INFO L225 Difference]: With dead ends: 2476 [2022-07-21 07:55:00,349 INFO L226 Difference]: Without dead ends: 2416 [2022-07-21 07:55:00,350 INFO L412 NwaCegarLoop]: 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 [2022-07-21 07:55:00,358 INFO L413 NwaCegarLoop]: 1661 mSDtfsCounter, 1524 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1524 SdHoareTripleChecker+Valid, 1754 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 [2022-07-21 07:55:00,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1524 Valid, 1754 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:55:00,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2416 states. [2022-07-21 07:55:00,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2416 to 2414. [2022-07-21 07:55:00,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2414 states, 2412 states have (on average 1.5087064676616915) internal successors, (3639), 2413 states have internal predecessors, (3639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:55:00,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2414 states to 2414 states and 3639 transitions. [2022-07-21 07:55:00,399 INFO L78 Accepts]: Start accepts. Automaton has 2414 states and 3639 transitions. Word has length 77 [2022-07-21 07:55:00,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:55:00,399 INFO L495 AbstractCegarLoop]: Abstraction has 2414 states and 3639 transitions. [2022-07-21 07:55:00,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:55:00,400 INFO L276 IsEmpty]: Start isEmpty. Operand 2414 states and 3639 transitions. [2022-07-21 07:55:00,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-21 07:55:00,401 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:55:00,402 INFO L195 NwaCegarLoop]: 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] [2022-07-21 07:55:00,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 07:55:00,402 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:55:00,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:55:00,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1452480302, now seen corresponding path program 1 times [2022-07-21 07:55:00,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:55:00,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991076699] [2022-07-21 07:55:00,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:55:00,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:55:00,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:55:00,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:55:00,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:55:00,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991076699] [2022-07-21 07:55:00,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991076699] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:55:00,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:55:00,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 07:55:00,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926940185] [2022-07-21 07:55:00,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:55:00,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:55:00,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:55:00,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:55:00,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:55:00,475 INFO L87 Difference]: Start difference. First operand 2414 states and 3639 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:55:00,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:55:00,509 INFO L93 Difference]: Finished difference Result 2626 states and 3975 transitions. [2022-07-21 07:55:00,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:55:00,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-07-21 07:55:00,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:55:00,517 INFO L225 Difference]: With dead ends: 2626 [2022-07-21 07:55:00,517 INFO L226 Difference]: Without dead ends: 2514 [2022-07-21 07:55:00,518 INFO L412 NwaCegarLoop]: 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 [2022-07-21 07:55:00,520 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 1504 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 1717 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 [2022-07-21 07:55:00,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 1717 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:55:00,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2514 states. [2022-07-21 07:55:00,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2514 to 2512. [2022-07-21 07:55:00,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2512 states, 2510 states have (on average 1.5115537848605578) internal successors, (3794), 2511 states have internal predecessors, (3794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:55:00,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2512 states to 2512 states and 3794 transitions. [2022-07-21 07:55:00,566 INFO L78 Accepts]: Start accepts. Automaton has 2512 states and 3794 transitions. Word has length 77 [2022-07-21 07:55:00,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:55:00,570 INFO L495 AbstractCegarLoop]: Abstraction has 2512 states and 3794 transitions. [2022-07-21 07:55:00,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:55:00,570 INFO L276 IsEmpty]: Start isEmpty. Operand 2512 states and 3794 transitions. [2022-07-21 07:55:00,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-21 07:55:00,572 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:55:00,572 INFO L195 NwaCegarLoop]: 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] [2022-07-21 07:55:00,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 07:55:00,572 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:55:00,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:55:00,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1624501596, now seen corresponding path program 1 times [2022-07-21 07:55:00,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:55:00,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513538553] [2022-07-21 07:55:00,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:55:00,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:55:00,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:55:00,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:55:00,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:55:00,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513538553] [2022-07-21 07:55:00,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513538553] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:55:00,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:55:00,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 07:55:00,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999138984] [2022-07-21 07:55:00,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:55:00,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 07:55:00,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:55:00,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 07:55:00,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 07:55:00,659 INFO L87 Difference]: Start difference. First operand 2512 states and 3794 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:55:00,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:55:00,932 INFO L93 Difference]: Finished difference Result 5032 states and 7790 transitions. [2022-07-21 07:55:00,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 07:55:00,933 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-07-21 07:55:00,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:55:00,947 INFO L225 Difference]: With dead ends: 5032 [2022-07-21 07:55:00,947 INFO L226 Difference]: Without dead ends: 4822 [2022-07-21 07:55:00,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2022-07-21 07:55:00,950 INFO L413 NwaCegarLoop]: 1574 mSDtfsCounter, 10491 mSDsluCounter, 1191 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10491 SdHoareTripleChecker+Valid, 2765 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 07:55:00,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10491 Valid, 2765 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 07:55:00,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4822 states. [2022-07-21 07:55:01,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4822 to 2720. [2022-07-21 07:55:01,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2720 states, 2718 states have (on average 1.5150846210448858) internal successors, (4118), 2719 states have internal predecessors, (4118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:55:01,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2720 states to 2720 states and 4118 transitions. [2022-07-21 07:55:01,018 INFO L78 Accepts]: Start accepts. Automaton has 2720 states and 4118 transitions. Word has length 77 [2022-07-21 07:55:01,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:55:01,019 INFO L495 AbstractCegarLoop]: Abstraction has 2720 states and 4118 transitions. [2022-07-21 07:55:01,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:55:01,019 INFO L276 IsEmpty]: Start isEmpty. Operand 2720 states and 4118 transitions. [2022-07-21 07:55:01,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-21 07:55:01,020 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:55:01,020 INFO L195 NwaCegarLoop]: 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] [2022-07-21 07:55:01,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 07:55:01,020 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:55:01,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:55:01,021 INFO L85 PathProgramCache]: Analyzing trace with hash 806369108, now seen corresponding path program 1 times [2022-07-21 07:55:01,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:55:01,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096820324] [2022-07-21 07:55:01,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:55:01,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:55:01,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:55:01,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:55:01,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:55:01,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096820324] [2022-07-21 07:55:01,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096820324] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:55:01,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:55:01,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 07:55:01,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599086907] [2022-07-21 07:55:01,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:55:01,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:55:01,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:55:01,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:55:01,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:55:01,055 INFO L87 Difference]: Start difference. First operand 2720 states and 4118 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:55:01,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:55:01,111 INFO L93 Difference]: Finished difference Result 3340 states and 5090 transitions. [2022-07-21 07:55:01,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:55:01,111 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2022-07-21 07:55:01,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:55:01,119 INFO L225 Difference]: With dead ends: 3340 [2022-07-21 07:55:01,119 INFO L226 Difference]: Without dead ends: 2922 [2022-07-21 07:55:01,120 INFO L412 NwaCegarLoop]: 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 [2022-07-21 07:55:01,121 INFO L413 NwaCegarLoop]: 1585 mSDtfsCounter, 1496 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 1675 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:55:01,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 1675 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:55:01,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2922 states. [2022-07-21 07:55:01,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2922 to 2920. [2022-07-21 07:55:01,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2920 states, 2918 states have (on average 1.5167923235092529) internal successors, (4426), 2919 states have internal predecessors, (4426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:55:01,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2920 states to 2920 states and 4426 transitions. [2022-07-21 07:55:01,185 INFO L78 Accepts]: Start accepts. Automaton has 2920 states and 4426 transitions. Word has length 79 [2022-07-21 07:55:01,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:55:01,186 INFO L495 AbstractCegarLoop]: Abstraction has 2920 states and 4426 transitions. [2022-07-21 07:55:01,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:55:01,186 INFO L276 IsEmpty]: Start isEmpty. Operand 2920 states and 4426 transitions. [2022-07-21 07:55:01,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-21 07:55:01,186 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:55:01,187 INFO L195 NwaCegarLoop]: 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] [2022-07-21 07:55:01,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 07:55:01,187 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:55:01,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:55:01,187 INFO L85 PathProgramCache]: Analyzing trace with hash 872862620, now seen corresponding path program 1 times [2022-07-21 07:55:01,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:55:01,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087911802] [2022-07-21 07:55:01,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:55:01,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:55:01,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:55:01,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:55:01,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:55:01,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087911802] [2022-07-21 07:55:01,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087911802] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:55:01,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:55:01,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 07:55:01,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281044998] [2022-07-21 07:55:01,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:55:01,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 07:55:01,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:55:01,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 07:55:01,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-21 07:55:01,313 INFO L87 Difference]: Start difference. First operand 2920 states and 4426 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:55:01,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:55:01,531 INFO L93 Difference]: Finished difference Result 3538 states and 5390 transitions. [2022-07-21 07:55:01,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 07:55:01,531 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2022-07-21 07:55:01,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:55:01,539 INFO L225 Difference]: With dead ends: 3538 [2022-07-21 07:55:01,539 INFO L226 Difference]: Without dead ends: 2922 [2022-07-21 07:55:01,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2022-07-21 07:55:01,541 INFO L413 NwaCegarLoop]: 1597 mSDtfsCounter, 9273 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9273 SdHoareTripleChecker+Valid, 2055 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:55:01,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9273 Valid, 2055 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:55:01,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2922 states. [2022-07-21 07:55:01,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2922 to 2920. [2022-07-21 07:55:01,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2920 states, 2918 states have (on average 1.514736120630569) internal successors, (4420), 2919 states have internal predecessors, (4420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:55:01,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2920 states to 2920 states and 4420 transitions. [2022-07-21 07:55:01,609 INFO L78 Accepts]: Start accepts. Automaton has 2920 states and 4420 transitions. Word has length 79 [2022-07-21 07:55:01,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:55:01,610 INFO L495 AbstractCegarLoop]: Abstraction has 2920 states and 4420 transitions. [2022-07-21 07:55:01,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:55:01,610 INFO L276 IsEmpty]: Start isEmpty. Operand 2920 states and 4420 transitions. [2022-07-21 07:55:01,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-21 07:55:01,611 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:55:01,611 INFO L195 NwaCegarLoop]: 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] [2022-07-21 07:55:01,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 07:55:01,611 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:55:01,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:55:01,612 INFO L85 PathProgramCache]: Analyzing trace with hash -385682984, now seen corresponding path program 1 times [2022-07-21 07:55:01,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:55:01,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550380059] [2022-07-21 07:55:01,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:55:01,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:55:01,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:55:01,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:55:01,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:55:01,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550380059] [2022-07-21 07:55:01,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550380059] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:55:01,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:55:01,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 07:55:01,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888705094] [2022-07-21 07:55:01,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:55:01,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:55:01,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:55:01,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:55:01,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:55:01,647 INFO L87 Difference]: Start difference. First operand 2920 states and 4420 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:55:01,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:55:01,737 INFO L93 Difference]: Finished difference Result 4080 states and 6214 transitions. [2022-07-21 07:55:01,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:55:01,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2022-07-21 07:55:01,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:55:01,749 INFO L225 Difference]: With dead ends: 4080 [2022-07-21 07:55:01,749 INFO L226 Difference]: Without dead ends: 3464 [2022-07-21 07:55:01,752 INFO L412 NwaCegarLoop]: 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 [2022-07-21 07:55:01,755 INFO L413 NwaCegarLoop]: 1617 mSDtfsCounter, 1508 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1508 SdHoareTripleChecker+Valid, 1726 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 [2022-07-21 07:55:01,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1508 Valid, 1726 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:55:01,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3464 states. [2022-07-21 07:55:01,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3464 to 3462. [2022-07-21 07:55:01,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3462 states, 3460 states have (on average 1.515606936416185) internal successors, (5244), 3461 states have internal predecessors, (5244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:55:01,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3462 states to 3462 states and 5244 transitions. [2022-07-21 07:55:01,909 INFO L78 Accepts]: Start accepts. Automaton has 3462 states and 5244 transitions. Word has length 79 [2022-07-21 07:55:01,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:55:01,909 INFO L495 AbstractCegarLoop]: Abstraction has 3462 states and 5244 transitions. [2022-07-21 07:55:01,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:55:01,910 INFO L276 IsEmpty]: Start isEmpty. Operand 3462 states and 5244 transitions. [2022-07-21 07:55:01,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-21 07:55:01,910 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:55:01,910 INFO L195 NwaCegarLoop]: 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] [2022-07-21 07:55:01,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 07:55:01,911 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:55:01,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:55:01,911 INFO L85 PathProgramCache]: Analyzing trace with hash -111995272, now seen corresponding path program 1 times [2022-07-21 07:55:01,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:55:01,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73646604] [2022-07-21 07:55:01,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:55:01,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:55:01,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:55:01,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:55:01,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:55:01,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73646604] [2022-07-21 07:55:01,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73646604] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:55:01,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:55:01,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 07:55:01,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349992202] [2022-07-21 07:55:01,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:55:01,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:55:01,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:55:01,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:55:01,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:55:01,946 INFO L87 Difference]: Start difference. First operand 3462 states and 5244 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:55:02,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:55:02,096 INFO L93 Difference]: Finished difference Result 5634 states and 8566 transitions. [2022-07-21 07:55:02,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:55:02,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2022-07-21 07:55:02,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:55:02,119 INFO L225 Difference]: With dead ends: 5634 [2022-07-21 07:55:02,120 INFO L226 Difference]: Without dead ends: 4476 [2022-07-21 07:55:02,123 INFO L412 NwaCegarLoop]: 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 [2022-07-21 07:55:02,124 INFO L413 NwaCegarLoop]: 1630 mSDtfsCounter, 1512 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 1735 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 [2022-07-21 07:55:02,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1512 Valid, 1735 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:55:02,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4476 states. [2022-07-21 07:55:02,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4476 to 4474. [2022-07-21 07:55:02,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4474 states, 4472 states have (on average 1.5116279069767442) internal successors, (6760), 4473 states have internal predecessors, (6760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:55:02,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4474 states to 4474 states and 6760 transitions. [2022-07-21 07:55:02,308 INFO L78 Accepts]: Start accepts. Automaton has 4474 states and 6760 transitions. Word has length 79 [2022-07-21 07:55:02,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:55:02,308 INFO L495 AbstractCegarLoop]: Abstraction has 4474 states and 6760 transitions. [2022-07-21 07:55:02,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:55:02,309 INFO L276 IsEmpty]: Start isEmpty. Operand 4474 states and 6760 transitions. [2022-07-21 07:55:02,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-21 07:55:02,310 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:55:02,310 INFO L195 NwaCegarLoop]: 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] [2022-07-21 07:55:02,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 07:55:02,310 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:55:02,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:55:02,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1707076376, now seen corresponding path program 1 times [2022-07-21 07:55:02,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:55:02,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410868553] [2022-07-21 07:55:02,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:55:02,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:55:02,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:55:02,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:55:02,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:55:02,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410868553] [2022-07-21 07:55:02,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410868553] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:55:02,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:55:02,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 07:55:02,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763939243] [2022-07-21 07:55:02,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:55:02,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:55:02,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:55:02,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:55:02,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:55:02,342 INFO L87 Difference]: Start difference. First operand 4474 states and 6760 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:55:02,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:55:02,621 INFO L93 Difference]: Finished difference Result 8526 states and 12874 transitions. [2022-07-21 07:55:02,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:55:02,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2022-07-21 07:55:02,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:55:02,633 INFO L225 Difference]: With dead ends: 8526 [2022-07-21 07:55:02,633 INFO L226 Difference]: Without dead ends: 6356 [2022-07-21 07:55:02,637 INFO L412 NwaCegarLoop]: 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 [2022-07-21 07:55:02,637 INFO L413 NwaCegarLoop]: 1643 mSDtfsCounter, 1516 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 1744 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 [2022-07-21 07:55:02,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1516 Valid, 1744 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:55:02,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6356 states. [2022-07-21 07:55:02,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6356 to 6354. [2022-07-21 07:55:02,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6354 states, 6352 states have (on average 1.5) internal successors, (9528), 6353 states have internal predecessors, (9528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:55:02,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6354 states to 6354 states and 9528 transitions. [2022-07-21 07:55:02,925 INFO L78 Accepts]: Start accepts. Automaton has 6354 states and 9528 transitions. Word has length 79 [2022-07-21 07:55:02,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:55:02,925 INFO L495 AbstractCegarLoop]: Abstraction has 6354 states and 9528 transitions. [2022-07-21 07:55:02,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:55:02,926 INFO L276 IsEmpty]: Start isEmpty. Operand 6354 states and 9528 transitions. [2022-07-21 07:55:02,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-21 07:55:02,926 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:55:02,926 INFO L195 NwaCegarLoop]: 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] [2022-07-21 07:55:02,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 07:55:02,927 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:55:02,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:55:02,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1886482360, now seen corresponding path program 1 times [2022-07-21 07:55:02,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:55:02,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581664334] [2022-07-21 07:55:02,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:55:02,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:55:02,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:55:02,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:55:02,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:55:02,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581664334] [2022-07-21 07:55:02,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581664334] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:55:02,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:55:02,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 07:55:02,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277288638] [2022-07-21 07:55:02,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:55:02,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:55:02,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:55:02,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:55:02,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:55:02,953 INFO L87 Difference]: Start difference. First operand 6354 states and 9528 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:55:03,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:55:03,431 INFO L93 Difference]: Finished difference Result 13878 states and 20698 transitions. [2022-07-21 07:55:03,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:55:03,432 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2022-07-21 07:55:03,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:55:03,447 INFO L225 Difference]: With dead ends: 13878 [2022-07-21 07:55:03,447 INFO L226 Difference]: Without dead ends: 9828 [2022-07-21 07:55:03,454 INFO L412 NwaCegarLoop]: 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 [2022-07-21 07:55:03,455 INFO L413 NwaCegarLoop]: 1656 mSDtfsCounter, 1520 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1520 SdHoareTripleChecker+Valid, 1753 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 [2022-07-21 07:55:03,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1520 Valid, 1753 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:55:03,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9828 states. [2022-07-21 07:55:03,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9828 to 9826. [2022-07-21 07:55:03,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9826 states, 9824 states have (on average 1.479641693811075) internal successors, (14536), 9825 states have internal predecessors, (14536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:55:03,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9826 states to 9826 states and 14536 transitions. [2022-07-21 07:55:03,976 INFO L78 Accepts]: Start accepts. Automaton has 9826 states and 14536 transitions. Word has length 79 [2022-07-21 07:55:03,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:55:03,976 INFO L495 AbstractCegarLoop]: Abstraction has 9826 states and 14536 transitions. [2022-07-21 07:55:03,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:55:03,976 INFO L276 IsEmpty]: Start isEmpty. Operand 9826 states and 14536 transitions. [2022-07-21 07:55:03,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-21 07:55:03,977 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:55:03,977 INFO L195 NwaCegarLoop]: 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] [2022-07-21 07:55:03,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 07:55:03,977 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:55:03,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:55:03,978 INFO L85 PathProgramCache]: Analyzing trace with hash 874214487, now seen corresponding path program 1 times [2022-07-21 07:55:03,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:55:03,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74837079] [2022-07-21 07:55:03,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:55:03,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:55:03,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:55:04,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:55:04,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:55:04,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74837079] [2022-07-21 07:55:04,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74837079] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:55:04,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:55:04,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 07:55:04,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855016496] [2022-07-21 07:55:04,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:55:04,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 07:55:04,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:55:04,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 07:55:04,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 07:55:04,057 INFO L87 Difference]: Start difference. First operand 9826 states and 14536 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:55:05,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:55:05,013 INFO L93 Difference]: Finished difference Result 16289 states and 23807 transitions. [2022-07-21 07:55:05,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 07:55:05,013 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-07-21 07:55:05,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:55:05,038 INFO L225 Difference]: With dead ends: 16289 [2022-07-21 07:55:05,039 INFO L226 Difference]: Without dead ends: 16287 [2022-07-21 07:55:05,041 INFO L412 NwaCegarLoop]: 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 [2022-07-21 07:55:05,042 INFO L413 NwaCegarLoop]: 1609 mSDtfsCounter, 730 mSDsluCounter, 9164 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 10773 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:55:05,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 10773 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:55:05,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16287 states. [2022-07-21 07:55:05,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16287 to 10210. [2022-07-21 07:55:05,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10210 states, 10208 states have (on average 1.45846394984326) internal successors, (14888), 10209 states have internal predecessors, (14888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:55:05,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10210 states to 10210 states and 14888 transitions. [2022-07-21 07:55:05,672 INFO L78 Accepts]: Start accepts. Automaton has 10210 states and 14888 transitions. Word has length 80 [2022-07-21 07:55:05,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:55:05,673 INFO L495 AbstractCegarLoop]: Abstraction has 10210 states and 14888 transitions. [2022-07-21 07:55:05,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:55:05,673 INFO L276 IsEmpty]: Start isEmpty. Operand 10210 states and 14888 transitions. [2022-07-21 07:55:05,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-21 07:55:05,677 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:55:05,678 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:55:05,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 07:55:05,678 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:55:05,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:55:05,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1411161737, now seen corresponding path program 1 times [2022-07-21 07:55:05,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:55:05,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794682460] [2022-07-21 07:55:05,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:55:05,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:55:05,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:55:05,754 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-21 07:55:05,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:55:05,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794682460] [2022-07-21 07:55:05,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794682460] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:55:05,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:55:05,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 07:55:05,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952656033] [2022-07-21 07:55:05,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:55:05,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 07:55:05,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:55:05,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 07:55:05,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-21 07:55:05,757 INFO L87 Difference]: Start difference. First operand 10210 states and 14888 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) [2022-07-21 07:55:09,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:55:09,037 INFO L93 Difference]: Finished difference Result 59216 states and 85599 transitions. [2022-07-21 07:55:09,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 07:55:09,037 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 112 [2022-07-21 07:55:09,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:55:09,152 INFO L225 Difference]: With dead ends: 59216 [2022-07-21 07:55:09,152 INFO L226 Difference]: Without dead ends: 51310 [2022-07-21 07:55:09,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-07-21 07:55:09,174 INFO L413 NwaCegarLoop]: 1665 mSDtfsCounter, 8617 mSDsluCounter, 2136 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8617 SdHoareTripleChecker+Valid, 3801 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 07:55:09,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8617 Valid, 3801 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 07:55:09,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51310 states. [2022-07-21 07:55:10,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51310 to 18114. [2022-07-21 07:55:10,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18114 states, 18112 states have (on average 1.4474381625441697) internal successors, (26216), 18113 states have internal predecessors, (26216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:55:10,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18114 states to 18114 states and 26216 transitions. [2022-07-21 07:55:10,540 INFO L78 Accepts]: Start accepts. Automaton has 18114 states and 26216 transitions. Word has length 112 [2022-07-21 07:55:10,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:55:10,540 INFO L495 AbstractCegarLoop]: Abstraction has 18114 states and 26216 transitions. [2022-07-21 07:55:10,541 INFO L496 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) [2022-07-21 07:55:10,541 INFO L276 IsEmpty]: Start isEmpty. Operand 18114 states and 26216 transitions. [2022-07-21 07:55:10,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-21 07:55:10,546 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:55:10,546 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:55:10,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 07:55:10,547 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:55:10,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:55:10,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1381639519, now seen corresponding path program 1 times [2022-07-21 07:55:10,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:55:10,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441531517] [2022-07-21 07:55:10,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:55:10,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:55:10,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:55:10,622 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-21 07:55:10,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:55:10,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441531517] [2022-07-21 07:55:10,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441531517] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:55:10,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:55:10,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 07:55:10,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049865935] [2022-07-21 07:55:10,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:55:10,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 07:55:10,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:55:10,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 07:55:10,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-21 07:55:10,625 INFO L87 Difference]: Start difference. First operand 18114 states and 26216 transitions. Second operand has 8 states, 8 states have (on average 12.25) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:55:14,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:55:14,697 INFO L93 Difference]: Finished difference Result 67120 states and 96927 transitions. [2022-07-21 07:55:14,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 07:55:14,697 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2022-07-21 07:55:14,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:55:14,783 INFO L225 Difference]: With dead ends: 67120 [2022-07-21 07:55:14,783 INFO L226 Difference]: Without dead ends: 59214 [2022-07-21 07:55:14,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-07-21 07:55:14,804 INFO L413 NwaCegarLoop]: 1665 mSDtfsCounter, 8442 mSDsluCounter, 2197 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8442 SdHoareTripleChecker+Valid, 3862 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 07:55:14,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8442 Valid, 3862 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 07:55:14,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59214 states. [2022-07-21 07:55:16,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59214 to 29986. [2022-07-21 07:55:17,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29986 states, 29984 states have (on average 1.4383671291355389) internal successors, (43128), 29985 states have internal predecessors, (43128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:55:17,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29986 states to 29986 states and 43128 transitions. [2022-07-21 07:55:17,057 INFO L78 Accepts]: Start accepts. Automaton has 29986 states and 43128 transitions. Word has length 112 [2022-07-21 07:55:17,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:55:17,057 INFO L495 AbstractCegarLoop]: Abstraction has 29986 states and 43128 transitions. [2022-07-21 07:55:17,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:55:17,057 INFO L276 IsEmpty]: Start isEmpty. Operand 29986 states and 43128 transitions. [2022-07-21 07:55:17,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-21 07:55:17,064 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:55:17,064 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:55:17,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 07:55:17,064 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:55:17,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:55:17,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1107951807, now seen corresponding path program 1 times [2022-07-21 07:55:17,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:55:17,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561245652] [2022-07-21 07:55:17,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:55:17,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:55:17,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:55:17,119 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 07:55:17,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:55:17,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561245652] [2022-07-21 07:55:17,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561245652] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:55:17,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:55:17,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 07:55:17,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833332456] [2022-07-21 07:55:17,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:55:17,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 07:55:17,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:55:17,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 07:55:17,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-21 07:55:17,123 INFO L87 Difference]: Start difference. First operand 29986 states and 43128 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:55:22,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:55:22,321 INFO L93 Difference]: Finished difference Result 75024 states and 108255 transitions. [2022-07-21 07:55:22,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 07:55:22,322 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2022-07-21 07:55:22,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:55:22,417 INFO L225 Difference]: With dead ends: 75024 [2022-07-21 07:55:22,417 INFO L226 Difference]: Without dead ends: 67118 [2022-07-21 07:55:22,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-07-21 07:55:22,444 INFO L413 NwaCegarLoop]: 1665 mSDtfsCounter, 8410 mSDsluCounter, 2237 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8410 SdHoareTripleChecker+Valid, 3902 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 07:55:22,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8410 Valid, 3902 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 07:55:22,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67118 states. [2022-07-21 07:55:25,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67118 to 37890. [2022-07-21 07:55:25,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37890 states, 37888 states have (on average 1.4372888513513513) internal successors, (54456), 37889 states have internal predecessors, (54456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:55:25,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37890 states to 37890 states and 54456 transitions. [2022-07-21 07:55:25,657 INFO L78 Accepts]: Start accepts. Automaton has 37890 states and 54456 transitions. Word has length 112 [2022-07-21 07:55:25,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:55:25,657 INFO L495 AbstractCegarLoop]: Abstraction has 37890 states and 54456 transitions. [2022-07-21 07:55:25,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:55:25,657 INFO L276 IsEmpty]: Start isEmpty. Operand 37890 states and 54456 transitions. [2022-07-21 07:55:25,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-21 07:55:25,664 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:55:25,665 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:55:25,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 07:55:25,665 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:55:25,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:55:25,665 INFO L85 PathProgramCache]: Analyzing trace with hash 711119841, now seen corresponding path program 1 times [2022-07-21 07:55:25,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:55:25,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445793307] [2022-07-21 07:55:25,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:55:25,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:55:25,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:55:25,723 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-21 07:55:25,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:55:25,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445793307] [2022-07-21 07:55:25,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445793307] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:55:25,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:55:25,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 07:55:25,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592814587] [2022-07-21 07:55:25,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:55:25,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 07:55:25,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:55:25,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 07:55:25,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-21 07:55:25,726 INFO L87 Difference]: Start difference. First operand 37890 states and 54456 transitions. Second operand has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:55:31,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:55:31,904 INFO L93 Difference]: Finished difference Result 82928 states and 119583 transitions. [2022-07-21 07:55:31,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 07:55:31,905 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2022-07-21 07:55:31,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:55:32,003 INFO L225 Difference]: With dead ends: 82928 [2022-07-21 07:55:32,003 INFO L226 Difference]: Without dead ends: 75022 [2022-07-21 07:55:32,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-07-21 07:55:32,030 INFO L413 NwaCegarLoop]: 1665 mSDtfsCounter, 8478 mSDsluCounter, 2253 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8478 SdHoareTripleChecker+Valid, 3918 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 07:55:32,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8478 Valid, 3918 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 07:55:32,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75022 states. [2022-07-21 07:55:35,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75022 to 45794. [2022-07-21 07:55:35,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45794 states, 45792 states have (on average 1.4365828092243187) internal successors, (65784), 45793 states have internal predecessors, (65784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:55:35,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45794 states to 45794 states and 65784 transitions. [2022-07-21 07:55:35,988 INFO L78 Accepts]: Start accepts. Automaton has 45794 states and 65784 transitions. Word has length 112 [2022-07-21 07:55:35,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:55:35,988 INFO L495 AbstractCegarLoop]: Abstraction has 45794 states and 65784 transitions. [2022-07-21 07:55:35,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:55:35,989 INFO L276 IsEmpty]: Start isEmpty. Operand 45794 states and 65784 transitions. [2022-07-21 07:55:35,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-21 07:55:35,997 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:55:35,997 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:55:35,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 07:55:35,997 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:55:35,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:55:35,998 INFO L85 PathProgramCache]: Analyzing trace with hash 890525825, now seen corresponding path program 1 times [2022-07-21 07:55:35,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:55:35,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748407224] [2022-07-21 07:55:35,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:55:35,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:55:36,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:55:36,068 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 07:55:36,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:55:36,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748407224] [2022-07-21 07:55:36,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748407224] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:55:36,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:55:36,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 07:55:36,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860382742] [2022-07-21 07:55:36,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:55:36,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 07:55:36,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:55:36,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 07:55:36,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-21 07:55:36,070 INFO L87 Difference]: Start difference. First operand 45794 states and 65784 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:55:43,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:55:43,645 INFO L93 Difference]: Finished difference Result 90832 states and 130911 transitions. [2022-07-21 07:55:43,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 07:55:43,645 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2022-07-21 07:55:43,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:55:43,757 INFO L225 Difference]: With dead ends: 90832 [2022-07-21 07:55:43,758 INFO L226 Difference]: Without dead ends: 82926 [2022-07-21 07:55:43,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-07-21 07:55:43,781 INFO L413 NwaCegarLoop]: 1666 mSDtfsCounter, 8582 mSDsluCounter, 2245 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8582 SdHoareTripleChecker+Valid, 3911 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 07:55:43,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8582 Valid, 3911 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 07:55:43,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82926 states. [2022-07-21 07:55:49,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82926 to 53698. [2022-07-21 07:55:49,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53698 states, 53696 states have (on average 1.4360846245530394) internal successors, (77112), 53697 states have internal predecessors, (77112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:55:49,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53698 states to 53698 states and 77112 transitions. [2022-07-21 07:55:49,338 INFO L78 Accepts]: Start accepts. Automaton has 53698 states and 77112 transitions. Word has length 112 [2022-07-21 07:55:49,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:55:49,338 INFO L495 AbstractCegarLoop]: Abstraction has 53698 states and 77112 transitions. [2022-07-21 07:55:49,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:55:49,338 INFO L276 IsEmpty]: Start isEmpty. Operand 53698 states and 77112 transitions. [2022-07-21 07:55:49,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-21 07:55:49,347 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:55:49,347 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:55:49,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-21 07:55:49,348 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:55:49,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:55:49,348 INFO L85 PathProgramCache]: Analyzing trace with hash -420877289, now seen corresponding path program 1 times [2022-07-21 07:55:49,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:55:49,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338732789] [2022-07-21 07:55:49,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:55:49,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:55:49,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:55:49,404 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-21 07:55:49,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:55:49,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338732789] [2022-07-21 07:55:49,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338732789] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:55:49,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:55:49,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 07:55:49,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115299175] [2022-07-21 07:55:49,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:55:49,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 07:55:49,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:55:49,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 07:55:49,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-21 07:55:49,406 INFO L87 Difference]: Start difference. First operand 53698 states and 77112 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:55:58,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:55:58,422 INFO L93 Difference]: Finished difference Result 93936 states and 135391 transitions. [2022-07-21 07:55:58,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 07:55:58,422 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2022-07-21 07:55:58,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:55:58,561 INFO L225 Difference]: With dead ends: 93936 [2022-07-21 07:55:58,561 INFO L226 Difference]: Without dead ends: 88430 [2022-07-21 07:55:58,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-07-21 07:55:58,592 INFO L413 NwaCegarLoop]: 1663 mSDtfsCounter, 8579 mSDsluCounter, 2170 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8579 SdHoareTripleChecker+Valid, 3833 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 07:55:58,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8579 Valid, 3833 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 07:55:58,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88430 states. [2022-07-21 07:56:05,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88430 to 59202. [2022-07-21 07:56:05,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59202 states, 59200 states have (on average 1.4366216216216217) internal successors, (85048), 59201 states have internal predecessors, (85048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:56:05,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59202 states to 59202 states and 85048 transitions. [2022-07-21 07:56:05,236 INFO L78 Accepts]: Start accepts. Automaton has 59202 states and 85048 transitions. Word has length 112 [2022-07-21 07:56:05,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:56:05,236 INFO L495 AbstractCegarLoop]: Abstraction has 59202 states and 85048 transitions. [2022-07-21 07:56:05,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:56:05,236 INFO L276 IsEmpty]: Start isEmpty. Operand 59202 states and 85048 transitions. [2022-07-21 07:56:05,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-21 07:56:05,247 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:56:05,248 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:56:05,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-21 07:56:05,248 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:56:05,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:56:05,249 INFO L85 PathProgramCache]: Analyzing trace with hash 746098925, now seen corresponding path program 1 times [2022-07-21 07:56:05,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:56:05,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460921770] [2022-07-21 07:56:05,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:56:05,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:56:05,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:56:05,293 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:56:05,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:56:05,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460921770] [2022-07-21 07:56:05,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460921770] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:56:05,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:56:05,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 07:56:05,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36982343] [2022-07-21 07:56:05,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:56:05,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:56:05,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:56:05,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:56:05,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:56:05,295 INFO L87 Difference]: Start difference. First operand 59202 states and 85048 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:56:11,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:56:11,996 INFO L93 Difference]: Finished difference Result 116102 states and 166634 transitions. [2022-07-21 07:56:11,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:56:11,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2022-07-21 07:56:11,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:56:12,078 INFO L225 Difference]: With dead ends: 116102 [2022-07-21 07:56:12,078 INFO L226 Difference]: Without dead ends: 59204 [2022-07-21 07:56:12,114 INFO L412 NwaCegarLoop]: 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 [2022-07-21 07:56:12,115 INFO L413 NwaCegarLoop]: 1625 mSDtfsCounter, 60 mSDsluCounter, 1567 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 3192 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:56:12,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 3192 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:56:12,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59204 states.