./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.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 160554c42c564a52ebd5fe8cd6d07ff66d908df6432eaaa8c30073c4760a7967 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 07:16:37,118 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 07:16:37,120 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 07:16:37,139 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 07:16:37,140 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 07:16:37,141 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 07:16:37,144 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 07:16:37,146 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 07:16:37,147 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 07:16:37,152 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 07:16:37,153 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 07:16:37,154 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 07:16:37,154 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 07:16:37,156 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 07:16:37,157 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 07:16:37,159 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 07:16:37,160 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 07:16:37,161 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 07:16:37,164 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 07:16:37,168 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 07:16:37,169 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 07:16:37,170 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 07:16:37,170 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 07:16:37,171 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 07:16:37,172 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 07:16:37,175 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 07:16:37,175 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 07:16:37,176 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 07:16:37,177 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 07:16:37,177 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 07:16:37,178 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 07:16:37,178 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 07:16:37,179 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 07:16:37,179 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 07:16:37,180 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 07:16:37,180 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 07:16:37,181 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 07:16:37,181 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 07:16:37,181 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 07:16:37,181 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 07:16:37,182 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 07:16:37,183 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 07:16:37,184 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 07:16:37,205 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 07:16:37,205 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 07:16:37,205 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 07:16:37,205 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 07:16:37,206 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 07:16:37,206 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 07:16:37,206 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 07:16:37,206 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 07:16:37,207 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 07:16:37,207 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 07:16:37,207 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 07:16:37,207 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 07:16:37,207 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 07:16:37,207 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 07:16:37,207 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 07:16:37,208 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 07:16:37,208 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 07:16:37,208 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 07:16:37,208 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 07:16:37,208 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 07:16:37,208 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 07:16:37,208 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 07:16:37,209 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 07:16:37,209 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 07:16:37,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 07:16:37,209 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 07:16:37,209 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 07:16:37,210 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 07:16:37,210 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 07:16:37,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 07:16:37,210 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 07:16:37,210 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 07:16:37,211 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 07:16:37,211 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 160554c42c564a52ebd5fe8cd6d07ff66d908df6432eaaa8c30073c4760a7967 [2022-07-12 07:16:37,411 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 07:16:37,431 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 07:16:37,433 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 07:16:37,433 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 07:16:37,434 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 07:16:37,435 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2022-07-12 07:16:37,474 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae641e29b/88d193f96c12474ead37e660af640a1b/FLAGd82b022ea [2022-07-12 07:16:37,859 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 07:16:37,860 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2022-07-12 07:16:37,869 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae641e29b/88d193f96c12474ead37e660af640a1b/FLAGd82b022ea [2022-07-12 07:16:38,253 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae641e29b/88d193f96c12474ead37e660af640a1b [2022-07-12 07:16:38,255 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 07:16:38,256 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 07:16:38,257 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 07:16:38,257 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 07:16:38,259 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 07:16:38,260 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 07:16:38" (1/1) ... [2022-07-12 07:16:38,260 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@858f422 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:16:38, skipping insertion in model container [2022-07-12 07:16:38,261 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 07:16:38" (1/1) ... [2022-07-12 07:16:38,266 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 07:16:38,293 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 07:16:38,432 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/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[4902,4915] [2022-07-12 07:16:38,444 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 07:16:38,452 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 07:16:38,473 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/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[4902,4915] [2022-07-12 07:16:38,497 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 07:16:38,508 INFO L208 MainTranslator]: Completed translation [2022-07-12 07:16:38,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:16:38 WrapperNode [2022-07-12 07:16:38,508 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 07:16:38,509 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 07:16:38,509 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 07:16:38,509 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 07:16:38,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:16:38" (1/1) ... [2022-07-12 07:16:38,520 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:16:38" (1/1) ... [2022-07-12 07:16:38,550 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 343 [2022-07-12 07:16:38,550 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 07:16:38,551 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 07:16:38,551 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 07:16:38,551 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 07:16:38,556 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:16:38" (1/1) ... [2022-07-12 07:16:38,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:16:38" (1/1) ... [2022-07-12 07:16:38,565 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:16:38" (1/1) ... [2022-07-12 07:16:38,576 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:16:38" (1/1) ... [2022-07-12 07:16:38,580 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:16:38" (1/1) ... [2022-07-12 07:16:38,583 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:16:38" (1/1) ... [2022-07-12 07:16:38,584 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:16:38" (1/1) ... [2022-07-12 07:16:38,586 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 07:16:38,587 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 07:16:38,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 07:16:38,597 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 07:16:38,598 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:16:38" (1/1) ... [2022-07-12 07:16:38,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 07:16:38,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 07:16:38,623 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) [2022-07-12 07:16:38,628 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 [2022-07-12 07:16:38,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 07:16:38,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 07:16:38,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 07:16:38,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 07:16:38,714 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 07:16:38,715 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 07:16:38,939 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 07:16:38,944 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 07:16:38,944 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 07:16:38,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 07:16:38 BoogieIcfgContainer [2022-07-12 07:16:38,947 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 07:16:38,949 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 07:16:38,949 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 07:16:38,965 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 07:16:38,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 07:16:38" (1/3) ... [2022-07-12 07:16:38,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72fff06c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 07:16:38, skipping insertion in model container [2022-07-12 07:16:38,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:16:38" (2/3) ... [2022-07-12 07:16:38,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72fff06c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 07:16:38, skipping insertion in model container [2022-07-12 07:16:38,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 07:16:38" (3/3) ... [2022-07-12 07:16:38,967 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2022-07-12 07:16:38,977 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 07:16:38,977 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 07:16:39,009 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 07:16:39,013 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@183e9c20, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@70464dc2 [2022-07-12 07:16:39,014 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 07:16:39,017 INFO L276 IsEmpty]: Start isEmpty. Operand has 79 states, 77 states have (on average 1.7272727272727273) internal successors, (133), 78 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:16:39,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-12 07:16:39,022 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:16:39,023 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] [2022-07-12 07:16:39,023 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:16:39,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:16:39,027 INFO L85 PathProgramCache]: Analyzing trace with hash -347547403, now seen corresponding path program 1 times [2022-07-12 07:16:39,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:16:39,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148029941] [2022-07-12 07:16:39,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:16:39,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:16:39,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:16:39,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:16:39,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:16:39,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148029941] [2022-07-12 07:16:39,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148029941] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:16:39,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:16:39,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:16:39,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27913428] [2022-07-12 07:16:39,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:16:39,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:16:39,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:16:39,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:16:39,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:16:39,363 INFO L87 Difference]: Start difference. First operand has 79 states, 77 states have (on average 1.7272727272727273) internal successors, (133), 78 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:16:39,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:16:39,429 INFO L93 Difference]: Finished difference Result 177 states and 286 transitions. [2022-07-12 07:16:39,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:16:39,433 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-07-12 07:16:39,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:16:39,440 INFO L225 Difference]: With dead ends: 177 [2022-07-12 07:16:39,440 INFO L226 Difference]: Without dead ends: 118 [2022-07-12 07:16:39,443 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 [2022-07-12 07:16:39,445 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 91 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:16:39,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 277 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:16:39,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-07-12 07:16:39,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 116. [2022-07-12 07:16:39,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.4695652173913043) internal successors, (169), 115 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:16:39,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 169 transitions. [2022-07-12 07:16:39,489 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 169 transitions. Word has length 47 [2022-07-12 07:16:39,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:16:39,490 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 169 transitions. [2022-07-12 07:16:39,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:16:39,490 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 169 transitions. [2022-07-12 07:16:39,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-07-12 07:16:39,491 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:16:39,492 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] [2022-07-12 07:16:39,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 07:16:39,492 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:16:39,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:16:39,493 INFO L85 PathProgramCache]: Analyzing trace with hash -391185874, now seen corresponding path program 1 times [2022-07-12 07:16:39,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:16:39,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343487424] [2022-07-12 07:16:39,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:16:39,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:16:39,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:16:39,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:16:39,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:16:39,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343487424] [2022-07-12 07:16:39,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343487424] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:16:39,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:16:39,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:16:39,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094812329] [2022-07-12 07:16:39,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:16:39,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:16:39,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:16:39,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:16:39,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:16:39,550 INFO L87 Difference]: Start difference. First operand 116 states and 169 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:16:39,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:16:39,582 INFO L93 Difference]: Finished difference Result 280 states and 429 transitions. [2022-07-12 07:16:39,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:16:39,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2022-07-12 07:16:39,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:16:39,587 INFO L225 Difference]: With dead ends: 280 [2022-07-12 07:16:39,589 INFO L226 Difference]: Without dead ends: 190 [2022-07-12 07:16:39,590 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 [2022-07-12 07:16:39,591 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 64 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 237 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 [2022-07-12 07:16:39,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 237 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:16:39,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-07-12 07:16:39,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 188. [2022-07-12 07:16:39,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 1.5133689839572193) internal successors, (283), 187 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:16:39,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 283 transitions. [2022-07-12 07:16:39,614 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 283 transitions. Word has length 48 [2022-07-12 07:16:39,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:16:39,616 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 283 transitions. [2022-07-12 07:16:39,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:16:39,616 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 283 transitions. [2022-07-12 07:16:39,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-07-12 07:16:39,618 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:16:39,619 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] [2022-07-12 07:16:39,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 07:16:39,621 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:16:39,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:16:39,623 INFO L85 PathProgramCache]: Analyzing trace with hash -2047730124, now seen corresponding path program 1 times [2022-07-12 07:16:39,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:16:39,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335995133] [2022-07-12 07:16:39,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:16:39,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:16:39,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:16:39,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:16:39,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:16:39,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335995133] [2022-07-12 07:16:39,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335995133] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:16:39,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:16:39,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:16:39,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329377830] [2022-07-12 07:16:39,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:16:39,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:16:39,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:16:39,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:16:39,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:16:39,679 INFO L87 Difference]: Start difference. First operand 188 states and 283 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:16:39,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:16:39,722 INFO L93 Difference]: Finished difference Result 480 states and 745 transitions. [2022-07-12 07:16:39,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:16:39,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2022-07-12 07:16:39,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:16:39,727 INFO L225 Difference]: With dead ends: 480 [2022-07-12 07:16:39,727 INFO L226 Difference]: Without dead ends: 318 [2022-07-12 07:16:39,729 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 [2022-07-12 07:16:39,730 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 59 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 233 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 [2022-07-12 07:16:39,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 233 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:16:39,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2022-07-12 07:16:39,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 316. [2022-07-12 07:16:39,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 315 states have (on average 1.5333333333333334) internal successors, (483), 315 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:16:39,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 483 transitions. [2022-07-12 07:16:39,758 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 483 transitions. Word has length 49 [2022-07-12 07:16:39,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:16:39,758 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 483 transitions. [2022-07-12 07:16:39,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:16:39,759 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 483 transitions. [2022-07-12 07:16:39,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-12 07:16:39,763 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:16:39,763 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] [2022-07-12 07:16:39,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 07:16:39,763 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:16:39,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:16:39,766 INFO L85 PathProgramCache]: Analyzing trace with hash -415311335, now seen corresponding path program 1 times [2022-07-12 07:16:39,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:16:39,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821716066] [2022-07-12 07:16:39,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:16:39,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:16:39,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:16:39,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:16:39,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:16:39,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821716066] [2022-07-12 07:16:39,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821716066] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:16:39,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:16:39,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:16:39,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161034798] [2022-07-12 07:16:39,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:16:39,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:16:39,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:16:39,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:16:39,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:16:39,852 INFO L87 Difference]: Start difference. First operand 316 states and 483 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:16:39,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:16:39,895 INFO L93 Difference]: Finished difference Result 832 states and 1293 transitions. [2022-07-12 07:16:39,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:16:39,896 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2022-07-12 07:16:39,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:16:39,899 INFO L225 Difference]: With dead ends: 832 [2022-07-12 07:16:39,899 INFO L226 Difference]: Without dead ends: 542 [2022-07-12 07:16:39,901 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 [2022-07-12 07:16:39,906 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 54 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 229 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 [2022-07-12 07:16:39,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 229 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:16:39,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2022-07-12 07:16:39,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 540. [2022-07-12 07:16:39,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 539 states have (on average 1.5343228200371057) internal successors, (827), 539 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:16:39,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 827 transitions. [2022-07-12 07:16:39,939 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 827 transitions. Word has length 50 [2022-07-12 07:16:39,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:16:39,940 INFO L495 AbstractCegarLoop]: Abstraction has 540 states and 827 transitions. [2022-07-12 07:16:39,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:16:39,940 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 827 transitions. [2022-07-12 07:16:39,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-12 07:16:39,941 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:16:39,941 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] [2022-07-12 07:16:39,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 07:16:39,941 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:16:39,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:16:39,943 INFO L85 PathProgramCache]: Analyzing trace with hash -103942672, now seen corresponding path program 1 times [2022-07-12 07:16:39,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:16:39,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741853944] [2022-07-12 07:16:39,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:16:39,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:16:39,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:16:40,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:16:40,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:16:40,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741853944] [2022-07-12 07:16:40,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741853944] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:16:40,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:16:40,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 07:16:40,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187284440] [2022-07-12 07:16:40,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:16:40,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 07:16:40,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:16:40,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 07:16:40,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 07:16:40,041 INFO L87 Difference]: Start difference. First operand 540 states and 827 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:16:40,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:16:40,368 INFO L93 Difference]: Finished difference Result 4652 states and 7235 transitions. [2022-07-12 07:16:40,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 07:16:40,369 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2022-07-12 07:16:40,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:16:40,389 INFO L225 Difference]: With dead ends: 4652 [2022-07-12 07:16:40,389 INFO L226 Difference]: Without dead ends: 4138 [2022-07-12 07:16:40,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-12 07:16:40,394 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 784 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 993 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:16:40,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [784 Valid, 993 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:16:40,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4138 states. [2022-07-12 07:16:40,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4138 to 1052. [2022-07-12 07:16:40,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1052 states, 1051 states have (on average 1.5176022835394862) internal successors, (1595), 1051 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:16:40,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1595 transitions. [2022-07-12 07:16:40,498 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1595 transitions. Word has length 51 [2022-07-12 07:16:40,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:16:40,499 INFO L495 AbstractCegarLoop]: Abstraction has 1052 states and 1595 transitions. [2022-07-12 07:16:40,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:16:40,499 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1595 transitions. [2022-07-12 07:16:40,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-12 07:16:40,499 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:16:40,499 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] [2022-07-12 07:16:40,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 07:16:40,500 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:16:40,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:16:40,500 INFO L85 PathProgramCache]: Analyzing trace with hash -2026482100, now seen corresponding path program 1 times [2022-07-12 07:16:40,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:16:40,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440749414] [2022-07-12 07:16:40,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:16:40,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:16:40,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:16:40,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:16:40,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:16:40,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440749414] [2022-07-12 07:16:40,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440749414] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:16:40,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:16:40,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:16:40,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190463559] [2022-07-12 07:16:40,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:16:40,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:16:40,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:16:40,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:16:40,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:16:40,565 INFO L87 Difference]: Start difference. First operand 1052 states and 1595 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:16:40,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:16:40,670 INFO L93 Difference]: Finished difference Result 2570 states and 3911 transitions. [2022-07-12 07:16:40,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:16:40,671 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2022-07-12 07:16:40,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:16:40,676 INFO L225 Difference]: With dead ends: 2570 [2022-07-12 07:16:40,676 INFO L226 Difference]: Without dead ends: 1544 [2022-07-12 07:16:40,678 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 [2022-07-12 07:16:40,679 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 45 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 201 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 [2022-07-12 07:16:40,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 201 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:16:40,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2022-07-12 07:16:40,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 1542. [2022-07-12 07:16:40,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1542 states, 1541 states have (on average 1.5035691109669047) internal successors, (2317), 1541 states have internal predecessors, (2317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:16:40,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1542 states to 1542 states and 2317 transitions. [2022-07-12 07:16:40,791 INFO L78 Accepts]: Start accepts. Automaton has 1542 states and 2317 transitions. Word has length 53 [2022-07-12 07:16:40,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:16:40,792 INFO L495 AbstractCegarLoop]: Abstraction has 1542 states and 2317 transitions. [2022-07-12 07:16:40,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:16:40,792 INFO L276 IsEmpty]: Start isEmpty. Operand 1542 states and 2317 transitions. [2022-07-12 07:16:40,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-12 07:16:40,793 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:16:40,793 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] [2022-07-12 07:16:40,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 07:16:40,793 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:16:40,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:16:40,794 INFO L85 PathProgramCache]: Analyzing trace with hash -2005479445, now seen corresponding path program 1 times [2022-07-12 07:16:40,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:16:40,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474174879] [2022-07-12 07:16:40,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:16:40,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:16:40,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:16:40,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:16:40,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:16:40,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474174879] [2022-07-12 07:16:40,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474174879] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:16:40,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:16:40,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 07:16:40,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624151910] [2022-07-12 07:16:40,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:16:40,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 07:16:40,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:16:40,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 07:16:40,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-12 07:16:40,940 INFO L87 Difference]: Start difference. First operand 1542 states and 2317 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:16:41,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:16:41,142 INFO L93 Difference]: Finished difference Result 3058 states and 4607 transitions. [2022-07-12 07:16:41,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 07:16:41,143 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2022-07-12 07:16:41,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:16:41,147 INFO L225 Difference]: With dead ends: 3058 [2022-07-12 07:16:41,147 INFO L226 Difference]: Without dead ends: 1544 [2022-07-12 07:16:41,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-07-12 07:16:41,149 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 307 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:16:41,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 324 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:16:41,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2022-07-12 07:16:41,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 1542. [2022-07-12 07:16:41,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1542 states, 1541 states have (on average 1.4879948085658663) internal successors, (2293), 1541 states have internal predecessors, (2293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:16:41,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1542 states to 1542 states and 2293 transitions. [2022-07-12 07:16:41,240 INFO L78 Accepts]: Start accepts. Automaton has 1542 states and 2293 transitions. Word has length 53 [2022-07-12 07:16:41,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:16:41,241 INFO L495 AbstractCegarLoop]: Abstraction has 1542 states and 2293 transitions. [2022-07-12 07:16:41,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:16:41,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1542 states and 2293 transitions. [2022-07-12 07:16:41,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-12 07:16:41,242 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:16:41,242 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] [2022-07-12 07:16:41,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 07:16:41,242 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:16:41,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:16:41,243 INFO L85 PathProgramCache]: Analyzing trace with hash -2042230043, now seen corresponding path program 1 times [2022-07-12 07:16:41,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:16:41,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401720220] [2022-07-12 07:16:41,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:16:41,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:16:41,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:16:41,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:16:41,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:16:41,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401720220] [2022-07-12 07:16:41,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401720220] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:16:41,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:16:41,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 07:16:41,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617994009] [2022-07-12 07:16:41,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:16:41,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 07:16:41,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:16:41,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 07:16:41,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 07:16:41,278 INFO L87 Difference]: Start difference. First operand 1542 states and 2293 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:16:41,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:16:41,502 INFO L93 Difference]: Finished difference Result 4082 states and 6111 transitions. [2022-07-12 07:16:41,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 07:16:41,503 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2022-07-12 07:16:41,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:16:41,509 INFO L225 Difference]: With dead ends: 4082 [2022-07-12 07:16:41,510 INFO L226 Difference]: Without dead ends: 2568 [2022-07-12 07:16:41,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-12 07:16:41,511 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 428 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:16:41,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 109 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:16:41,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2568 states. [2022-07-12 07:16:41,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2568 to 2566. [2022-07-12 07:16:41,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2566 states, 2565 states have (on average 1.4865497076023393) internal successors, (3813), 2565 states have internal predecessors, (3813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:16:41,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2566 states to 2566 states and 3813 transitions. [2022-07-12 07:16:41,671 INFO L78 Accepts]: Start accepts. Automaton has 2566 states and 3813 transitions. Word has length 54 [2022-07-12 07:16:41,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:16:41,671 INFO L495 AbstractCegarLoop]: Abstraction has 2566 states and 3813 transitions. [2022-07-12 07:16:41,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:16:41,672 INFO L276 IsEmpty]: Start isEmpty. Operand 2566 states and 3813 transitions. [2022-07-12 07:16:41,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-12 07:16:41,672 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:16:41,672 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] [2022-07-12 07:16:41,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 07:16:41,677 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:16:41,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:16:41,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1489873546, now seen corresponding path program 1 times [2022-07-12 07:16:41,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:16:41,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652352891] [2022-07-12 07:16:41,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:16:41,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:16:41,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:16:41,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:16:41,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:16:41,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652352891] [2022-07-12 07:16:41,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652352891] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:16:41,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:16:41,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 07:16:41,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147143596] [2022-07-12 07:16:41,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:16:41,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 07:16:41,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:16:41,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 07:16:41,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 07:16:41,718 INFO L87 Difference]: Start difference. First operand 2566 states and 3813 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:16:41,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:16:41,929 INFO L93 Difference]: Finished difference Result 5104 states and 7598 transitions. [2022-07-12 07:16:41,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 07:16:41,929 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2022-07-12 07:16:41,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:16:41,936 INFO L225 Difference]: With dead ends: 5104 [2022-07-12 07:16:41,936 INFO L226 Difference]: Without dead ends: 2566 [2022-07-12 07:16:41,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-12 07:16:41,942 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 260 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:16:41,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 75 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:16:41,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2566 states. [2022-07-12 07:16:42,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2566 to 2566. [2022-07-12 07:16:42,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2566 states, 2565 states have (on average 1.470955165692008) internal successors, (3773), 2565 states have internal predecessors, (3773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:16:42,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2566 states to 2566 states and 3773 transitions. [2022-07-12 07:16:42,128 INFO L78 Accepts]: Start accepts. Automaton has 2566 states and 3773 transitions. Word has length 54 [2022-07-12 07:16:42,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:16:42,128 INFO L495 AbstractCegarLoop]: Abstraction has 2566 states and 3773 transitions. [2022-07-12 07:16:42,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:16:42,128 INFO L276 IsEmpty]: Start isEmpty. Operand 2566 states and 3773 transitions. [2022-07-12 07:16:42,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-12 07:16:42,129 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:16:42,129 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] [2022-07-12 07:16:42,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 07:16:42,129 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:16:42,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:16:42,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1617958853, now seen corresponding path program 1 times [2022-07-12 07:16:42,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:16:42,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120004347] [2022-07-12 07:16:42,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:16:42,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:16:42,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:16:42,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:16:42,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:16:42,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120004347] [2022-07-12 07:16:42,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120004347] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:16:42,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:16:42,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 07:16:42,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464895527] [2022-07-12 07:16:42,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:16:42,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 07:16:42,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:16:42,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 07:16:42,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 07:16:42,165 INFO L87 Difference]: Start difference. First operand 2566 states and 3773 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:16:42,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:16:42,377 INFO L93 Difference]: Finished difference Result 5104 states and 7518 transitions. [2022-07-12 07:16:42,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 07:16:42,377 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2022-07-12 07:16:42,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:16:42,384 INFO L225 Difference]: With dead ends: 5104 [2022-07-12 07:16:42,384 INFO L226 Difference]: Without dead ends: 2566 [2022-07-12 07:16:42,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-12 07:16:42,387 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 244 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:16:42,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 83 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:16:42,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2566 states. [2022-07-12 07:16:42,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2566 to 2566. [2022-07-12 07:16:42,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2566 states, 2565 states have (on average 1.4553606237816765) internal successors, (3733), 2565 states have internal predecessors, (3733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:16:42,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2566 states to 2566 states and 3733 transitions. [2022-07-12 07:16:42,601 INFO L78 Accepts]: Start accepts. Automaton has 2566 states and 3733 transitions. Word has length 54 [2022-07-12 07:16:42,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:16:42,601 INFO L495 AbstractCegarLoop]: Abstraction has 2566 states and 3733 transitions. [2022-07-12 07:16:42,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:16:42,601 INFO L276 IsEmpty]: Start isEmpty. Operand 2566 states and 3733 transitions. [2022-07-12 07:16:42,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-12 07:16:42,602 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:16:42,602 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] [2022-07-12 07:16:42,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 07:16:42,602 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:16:42,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:16:42,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1811476054, now seen corresponding path program 1 times [2022-07-12 07:16:42,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:16:42,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284157493] [2022-07-12 07:16:42,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:16:42,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:16:42,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:16:42,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:16:42,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:16:42,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284157493] [2022-07-12 07:16:42,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284157493] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:16:42,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:16:42,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 07:16:42,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294268317] [2022-07-12 07:16:42,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:16:42,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 07:16:42,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:16:42,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 07:16:42,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 07:16:42,647 INFO L87 Difference]: Start difference. First operand 2566 states and 3733 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:16:43,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:16:43,039 INFO L93 Difference]: Finished difference Result 4888 states and 7077 transitions. [2022-07-12 07:16:43,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 07:16:43,040 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2022-07-12 07:16:43,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:16:43,052 INFO L225 Difference]: With dead ends: 4888 [2022-07-12 07:16:43,053 INFO L226 Difference]: Without dead ends: 4886 [2022-07-12 07:16:43,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 07:16:43,054 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 138 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:16:43,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 463 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:16:43,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4886 states. [2022-07-12 07:16:43,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4886 to 2694. [2022-07-12 07:16:43,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2694 states, 2693 states have (on average 1.4307463795024136) internal successors, (3853), 2693 states have internal predecessors, (3853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:16:43,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2694 states to 2694 states and 3853 transitions. [2022-07-12 07:16:43,304 INFO L78 Accepts]: Start accepts. Automaton has 2694 states and 3853 transitions. Word has length 54 [2022-07-12 07:16:43,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:16:43,304 INFO L495 AbstractCegarLoop]: Abstraction has 2694 states and 3853 transitions. [2022-07-12 07:16:43,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:16:43,304 INFO L276 IsEmpty]: Start isEmpty. Operand 2694 states and 3853 transitions. [2022-07-12 07:16:43,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-12 07:16:43,306 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:16:43,306 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 07:16:43,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 07:16:43,306 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:16:43,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:16:43,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1690284398, now seen corresponding path program 1 times [2022-07-12 07:16:43,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:16:43,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942767830] [2022-07-12 07:16:43,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:16:43,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:16:43,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:16:43,350 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 07:16:43,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:16:43,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942767830] [2022-07-12 07:16:43,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942767830] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:16:43,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:16:43,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 07:16:43,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489584477] [2022-07-12 07:16:43,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:16:43,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 07:16:43,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:16:43,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 07:16:43,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 07:16:43,352 INFO L87 Difference]: Start difference. First operand 2694 states and 3853 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:16:44,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:16:44,429 INFO L93 Difference]: Finished difference Result 13720 states and 19666 transitions. [2022-07-12 07:16:44,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 07:16:44,429 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 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 76 [2022-07-12 07:16:44,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:16:44,461 INFO L225 Difference]: With dead ends: 13720 [2022-07-12 07:16:44,461 INFO L226 Difference]: Without dead ends: 11542 [2022-07-12 07:16:44,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-12 07:16:44,468 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 477 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:16:44,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 538 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:16:44,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11542 states. [2022-07-12 07:16:45,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11542 to 5118. [2022-07-12 07:16:45,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5118 states, 5117 states have (on average 1.426812585499316) internal successors, (7301), 5117 states have internal predecessors, (7301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:16:45,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5118 states to 5118 states and 7301 transitions. [2022-07-12 07:16:45,108 INFO L78 Accepts]: Start accepts. Automaton has 5118 states and 7301 transitions. Word has length 76 [2022-07-12 07:16:45,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:16:45,108 INFO L495 AbstractCegarLoop]: Abstraction has 5118 states and 7301 transitions. [2022-07-12 07:16:45,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:16:45,109 INFO L276 IsEmpty]: Start isEmpty. Operand 5118 states and 7301 transitions. [2022-07-12 07:16:45,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-12 07:16:45,110 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:16:45,110 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 07:16:45,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 07:16:45,111 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:16:45,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:16:45,111 INFO L85 PathProgramCache]: Analyzing trace with hash -34257664, now seen corresponding path program 1 times [2022-07-12 07:16:45,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:16:45,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947044184] [2022-07-12 07:16:45,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:16:45,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:16:45,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:16:45,168 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-12 07:16:45,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:16:45,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947044184] [2022-07-12 07:16:45,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947044184] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:16:45,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:16:45,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 07:16:45,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700381346] [2022-07-12 07:16:45,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:16:45,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 07:16:45,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:16:45,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 07:16:45,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 07:16:45,171 INFO L87 Difference]: Start difference. First operand 5118 states and 7301 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:16:46,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:16:46,334 INFO L93 Difference]: Finished difference Result 16384 states and 23458 transitions. [2022-07-12 07:16:46,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 07:16:46,334 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 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 76 [2022-07-12 07:16:46,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:16:46,358 INFO L225 Difference]: With dead ends: 16384 [2022-07-12 07:16:46,359 INFO L226 Difference]: Without dead ends: 13718 [2022-07-12 07:16:46,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-12 07:16:46,365 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 491 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:16:46,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [491 Valid, 598 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:16:46,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13718 states. [2022-07-12 07:16:47,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13718 to 8870. [2022-07-12 07:16:47,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8870 states, 8869 states have (on average 1.4221445484271056) internal successors, (12613), 8869 states have internal predecessors, (12613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:16:47,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8870 states to 8870 states and 12613 transitions. [2022-07-12 07:16:47,352 INFO L78 Accepts]: Start accepts. Automaton has 8870 states and 12613 transitions. Word has length 76 [2022-07-12 07:16:47,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:16:47,353 INFO L495 AbstractCegarLoop]: Abstraction has 8870 states and 12613 transitions. [2022-07-12 07:16:47,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:16:47,353 INFO L276 IsEmpty]: Start isEmpty. Operand 8870 states and 12613 transitions. [2022-07-12 07:16:47,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-12 07:16:47,355 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:16:47,355 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 07:16:47,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 07:16:47,355 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:16:47,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:16:47,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1119688442, now seen corresponding path program 1 times [2022-07-12 07:16:47,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:16:47,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736778712] [2022-07-12 07:16:47,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:16:47,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:16:47,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:16:47,400 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-12 07:16:47,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:16:47,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736778712] [2022-07-12 07:16:47,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736778712] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:16:47,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:16:47,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 07:16:47,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824679945] [2022-07-12 07:16:47,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:16:47,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 07:16:47,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:16:47,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 07:16:47,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 07:16:47,402 INFO L87 Difference]: Start difference. First operand 8870 states and 12613 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:16:48,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:16:48,906 INFO L93 Difference]: Finished difference Result 19048 states and 27242 transitions. [2022-07-12 07:16:48,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 07:16:48,907 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 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 76 [2022-07-12 07:16:48,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:16:48,935 INFO L225 Difference]: With dead ends: 19048 [2022-07-12 07:16:48,935 INFO L226 Difference]: Without dead ends: 16382 [2022-07-12 07:16:48,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-12 07:16:48,941 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 443 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:16:48,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 631 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:16:48,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16382 states. [2022-07-12 07:16:50,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16382 to 11534. [2022-07-12 07:16:50,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11534 states, 11533 states have (on average 1.4217462932454694) internal successors, (16397), 11533 states have internal predecessors, (16397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:16:50,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11534 states to 11534 states and 16397 transitions. [2022-07-12 07:16:50,054 INFO L78 Accepts]: Start accepts. Automaton has 11534 states and 16397 transitions. Word has length 76 [2022-07-12 07:16:50,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:16:50,055 INFO L495 AbstractCegarLoop]: Abstraction has 11534 states and 16397 transitions. [2022-07-12 07:16:50,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:16:50,055 INFO L276 IsEmpty]: Start isEmpty. Operand 11534 states and 16397 transitions. [2022-07-12 07:16:50,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-12 07:16:50,056 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:16:50,056 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 07:16:50,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 07:16:50,057 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:16:50,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:16:50,057 INFO L85 PathProgramCache]: Analyzing trace with hash 261787764, now seen corresponding path program 1 times [2022-07-12 07:16:50,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:16:50,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858619943] [2022-07-12 07:16:50,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:16:50,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:16:50,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:16:50,108 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 07:16:50,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:16:50,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858619943] [2022-07-12 07:16:50,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858619943] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:16:50,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:16:50,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 07:16:50,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851950433] [2022-07-12 07:16:50,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:16:50,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 07:16:50,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:16:50,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 07:16:50,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 07:16:50,114 INFO L87 Difference]: Start difference. First operand 11534 states and 16397 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:16:52,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:16:52,157 INFO L93 Difference]: Finished difference Result 21712 states and 31026 transitions. [2022-07-12 07:16:52,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 07:16:52,158 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 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 76 [2022-07-12 07:16:52,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:16:52,182 INFO L225 Difference]: With dead ends: 21712 [2022-07-12 07:16:52,183 INFO L226 Difference]: Without dead ends: 19046 [2022-07-12 07:16:52,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-12 07:16:52,189 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 479 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:16:52,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 626 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:16:52,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19046 states. [2022-07-12 07:16:53,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19046 to 14198. [2022-07-12 07:16:53,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14198 states, 14197 states have (on average 1.4214974994717193) internal successors, (20181), 14197 states have internal predecessors, (20181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:16:53,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14198 states to 14198 states and 20181 transitions. [2022-07-12 07:16:53,626 INFO L78 Accepts]: Start accepts. Automaton has 14198 states and 20181 transitions. Word has length 76 [2022-07-12 07:16:53,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:16:53,626 INFO L495 AbstractCegarLoop]: Abstraction has 14198 states and 20181 transitions. [2022-07-12 07:16:53,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:16:53,626 INFO L276 IsEmpty]: Start isEmpty. Operand 14198 states and 20181 transitions. [2022-07-12 07:16:53,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-12 07:16:53,629 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:16:53,629 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 07:16:53,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 07:16:53,629 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:16:53,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:16:53,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1414120063, now seen corresponding path program 1 times [2022-07-12 07:16:53,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:16:53,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595564276] [2022-07-12 07:16:53,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:16:53,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:16:53,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:16:53,803 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:16:53,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:16:53,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595564276] [2022-07-12 07:16:53,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595564276] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 07:16:53,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332226848] [2022-07-12 07:16:53,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:16:53,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 07:16:53,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 07:16:53,806 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 07:16:53,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 07:16:53,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:16:53,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-12 07:16:53,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 07:16:54,084 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:16:54,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 07:16:54,403 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:16:54,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332226848] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 07:16:54,403 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 07:16:54,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 6] total 22 [2022-07-12 07:16:54,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773197202] [2022-07-12 07:16:54,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 07:16:54,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-12 07:16:54,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:16:54,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-12 07:16:54,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2022-07-12 07:16:54,405 INFO L87 Difference]: Start difference. First operand 14198 states and 20181 transitions. Second operand has 22 states, 22 states have (on average 10.045454545454545) internal successors, (221), 22 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:17:57,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:17:57,128 INFO L93 Difference]: Finished difference Result 357275 states and 495102 transitions. [2022-07-12 07:17:57,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 410 states. [2022-07-12 07:17:57,128 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 10.045454545454545) internal successors, (221), 22 states have internal predecessors, (221), 0 states have call successors, (0), 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 [2022-07-12 07:17:57,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:17:58,033 INFO L225 Difference]: With dead ends: 357275 [2022-07-12 07:17:58,034 INFO L226 Difference]: Without dead ends: 339913 [2022-07-12 07:17:58,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 572 GetRequests, 143 SyntacticMatches, 2 SemanticMatches, 427 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88652 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=18715, Invalid=164897, Unknown=0, NotChecked=0, Total=183612 [2022-07-12 07:17:58,164 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 13580 mSDsluCounter, 2722 mSDsCounter, 0 mSdLazyCounter, 5810 mSolverCounterSat, 891 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13580 SdHoareTripleChecker+Valid, 3034 SdHoareTripleChecker+Invalid, 6701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 891 IncrementalHoareTripleChecker+Valid, 5810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-07-12 07:17:58,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13580 Valid, 3034 Invalid, 6701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [891 Valid, 5810 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-07-12 07:17:58,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339913 states.