./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-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 62ddbd8e479b9a9ff0259307914371bc7c12caf38dd9ff6b9d8872f71f8db1de --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 18:21:23,295 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 18:21:23,297 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 18:21:23,318 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 18:21:23,319 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 18:21:23,319 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 18:21:23,320 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 18:21:23,321 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 18:21:23,322 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 18:21:23,323 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 18:21:23,323 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 18:21:23,324 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 18:21:23,324 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 18:21:23,325 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 18:21:23,326 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 18:21:23,326 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 18:21:23,327 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 18:21:23,328 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 18:21:23,329 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 18:21:23,330 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 18:21:23,331 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 18:21:23,332 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 18:21:23,332 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 18:21:23,333 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 18:21:23,334 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 18:21:23,336 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 18:21:23,336 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 18:21:23,336 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 18:21:23,337 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 18:21:23,337 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 18:21:23,338 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 18:21:23,338 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 18:21:23,339 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 18:21:23,339 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 18:21:23,340 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 18:21:23,340 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 18:21:23,340 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 18:21:23,341 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 18:21:23,341 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 18:21:23,341 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 18:21:23,342 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 18:21:23,353 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 18:21:23,353 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 18:21:23,378 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 18:21:23,381 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 18:21:23,381 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 18:21:23,382 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 18:21:23,382 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 18:21:23,382 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 18:21:23,383 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 18:21:23,383 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 18:21:23,383 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 18:21:23,384 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 18:21:23,384 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 18:21:23,384 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 18:21:23,384 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 18:21:23,384 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 18:21:23,384 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 18:21:23,385 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 18:21:23,385 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 18:21:23,385 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 18:21:23,385 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 18:21:23,385 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 18:21:23,385 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 18:21:23,385 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 18:21:23,386 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 18:21:23,386 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 18:21:23,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 18:21:23,386 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 18:21:23,386 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 18:21:23,386 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 18:21:23,387 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 18:21:23,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 18:21:23,387 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 18:21:23,387 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 18:21:23,387 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 18:21:23,387 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 62ddbd8e479b9a9ff0259307914371bc7c12caf38dd9ff6b9d8872f71f8db1de [2022-07-22 18:21:23,584 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 18:21:23,598 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 18:21:23,600 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 18:21:23,600 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 18:21:23,601 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 18:21:23,602 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-07-22 18:21:23,660 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eaef5500c/287c1fa2eabe46ada7edea406cee3662/FLAGe558a0596 [2022-07-22 18:21:24,091 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 18:21:24,092 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-07-22 18:21:24,118 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eaef5500c/287c1fa2eabe46ada7edea406cee3662/FLAGe558a0596 [2022-07-22 18:21:24,438 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eaef5500c/287c1fa2eabe46ada7edea406cee3662 [2022-07-22 18:21:24,440 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 18:21:24,441 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 18:21:24,442 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 18:21:24,442 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 18:21:24,444 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 18:21:24,445 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:21:24" (1/1) ... [2022-07-22 18:21:24,446 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bb3f35d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:21:24, skipping insertion in model container [2022-07-22 18:21:24,446 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:21:24" (1/1) ... [2022-07-22 18:21:24,450 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 18:21:24,511 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 18:21:24,685 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-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[8125,8138] [2022-07-22 18:21:24,709 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-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14955,14968] [2022-07-22 18:21:24,716 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-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17042,17055] [2022-07-22 18:21:24,719 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-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18066,18079] [2022-07-22 18:21:24,827 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 18:21:24,835 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 18:21:24,868 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-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[8125,8138] [2022-07-22 18:21:24,886 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-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14955,14968] [2022-07-22 18:21:24,892 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-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17042,17055] [2022-07-22 18:21:24,896 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-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18066,18079] [2022-07-22 18:21:24,983 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 18:21:25,006 INFO L208 MainTranslator]: Completed translation [2022-07-22 18:21:25,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:21:25 WrapperNode [2022-07-22 18:21:25,007 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 18:21:25,008 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 18:21:25,008 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 18:21:25,008 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 18:21:25,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:21:25" (1/1) ... [2022-07-22 18:21:25,040 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:21:25" (1/1) ... [2022-07-22 18:21:25,127 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2415 [2022-07-22 18:21:25,127 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 18:21:25,129 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 18:21:25,129 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 18:21:25,129 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 18:21:25,135 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:21:25" (1/1) ... [2022-07-22 18:21:25,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:21:25" (1/1) ... [2022-07-22 18:21:25,141 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:21:25" (1/1) ... [2022-07-22 18:21:25,142 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:21:25" (1/1) ... [2022-07-22 18:21:25,166 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:21:25" (1/1) ... [2022-07-22 18:21:25,186 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:21:25" (1/1) ... [2022-07-22 18:21:25,201 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:21:25" (1/1) ... [2022-07-22 18:21:25,212 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 18:21:25,212 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 18:21:25,213 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 18:21:25,213 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 18:21:25,214 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:21:25" (1/1) ... [2022-07-22 18:21:25,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 18:21:25,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 18:21:25,235 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) [2022-07-22 18:21:25,237 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 [2022-07-22 18:21:25,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 18:21:25,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 18:21:25,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 18:21:25,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 18:21:25,389 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 18:21:25,390 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 18:21:26,293 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 18:21:26,310 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 18:21:26,310 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 18:21:26,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:21:26 BoogieIcfgContainer [2022-07-22 18:21:26,313 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 18:21:26,315 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 18:21:26,315 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 18:21:26,317 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 18:21:26,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 06:21:24" (1/3) ... [2022-07-22 18:21:26,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d1b051f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:21:26, skipping insertion in model container [2022-07-22 18:21:26,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:21:25" (2/3) ... [2022-07-22 18:21:26,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d1b051f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:21:26, skipping insertion in model container [2022-07-22 18:21:26,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:21:26" (3/3) ... [2022-07-22 18:21:26,320 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-07-22 18:21:26,333 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 18:21:26,333 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-07-22 18:21:26,389 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 18:21:26,394 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@128fdf2a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@29fd1a17 [2022-07-22 18:21:26,394 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-22 18:21:26,399 INFO L276 IsEmpty]: Start isEmpty. Operand has 456 states, 451 states have (on average 1.8492239467849223) internal successors, (834), 455 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:21:26,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-22 18:21:26,409 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:21:26,409 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] [2022-07-22 18:21:26,410 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-22 18:21:26,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:21:26,413 INFO L85 PathProgramCache]: Analyzing trace with hash 26036561, now seen corresponding path program 1 times [2022-07-22 18:21:26,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:21:26,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562519877] [2022-07-22 18:21:26,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:21:26,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:21:26,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:21:26,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:21:26,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:21:26,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562519877] [2022-07-22 18:21:26,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562519877] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:21:26,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:21:26,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:21:26,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397001848] [2022-07-22 18:21:26,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:21:26,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:21:26,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:21:26,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:21:26,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:21:26,654 INFO L87 Difference]: Start difference. First operand has 456 states, 451 states have (on average 1.8492239467849223) internal successors, (834), 455 states have internal predecessors, (834), 0 states have call successors, (0), 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 5 states, 5 states have (on average 10.0) internal successors, (50), 4 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) [2022-07-22 18:21:27,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:21:27,168 INFO L93 Difference]: Finished difference Result 833 states and 1472 transitions. [2022-07-22 18:21:27,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:21:27,171 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 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 [2022-07-22 18:21:27,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:21:27,182 INFO L225 Difference]: With dead ends: 833 [2022-07-22 18:21:27,183 INFO L226 Difference]: Without dead ends: 484 [2022-07-22 18:21:27,186 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 [2022-07-22 18:21:27,188 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 2293 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2293 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 18:21:27,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2293 Valid, 576 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 18:21:27,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2022-07-22 18:21:27,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 478. [2022-07-22 18:21:27,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 474 states have (on average 1.3755274261603376) internal successors, (652), 477 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:21:27,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 652 transitions. [2022-07-22 18:21:27,240 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 652 transitions. Word has length 50 [2022-07-22 18:21:27,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:21:27,240 INFO L495 AbstractCegarLoop]: Abstraction has 478 states and 652 transitions. [2022-07-22 18:21:27,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 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) [2022-07-22 18:21:27,240 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 652 transitions. [2022-07-22 18:21:27,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-22 18:21:27,242 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:21:27,243 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] [2022-07-22 18:21:27,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 18:21:27,243 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-22 18:21:27,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:21:27,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1543870192, now seen corresponding path program 1 times [2022-07-22 18:21:27,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:21:27,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035018501] [2022-07-22 18:21:27,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:21:27,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:21:27,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:21:27,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:21:27,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:21:27,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035018501] [2022-07-22 18:21:27,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035018501] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:21:27,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:21:27,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:21:27,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766288864] [2022-07-22 18:21:27,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:21:27,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:21:27,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:21:27,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:21:27,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:21:27,311 INFO L87 Difference]: Start difference. First operand 478 states and 652 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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) [2022-07-22 18:21:27,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:21:27,350 INFO L93 Difference]: Finished difference Result 938 states and 1336 transitions. [2022-07-22 18:21:27,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:21:27,351 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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 [2022-07-22 18:21:27,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:21:27,353 INFO L225 Difference]: With dead ends: 938 [2022-07-22 18:21:27,353 INFO L226 Difference]: Without dead ends: 684 [2022-07-22 18:21:27,354 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 [2022-07-22 18:21:27,355 INFO L413 NwaCegarLoop]: 510 mSDtfsCounter, 272 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:21:27,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 860 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:21:27,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2022-07-22 18:21:27,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 678. [2022-07-22 18:21:27,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 674 states have (on average 1.4080118694362018) internal successors, (949), 677 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:21:27,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 949 transitions. [2022-07-22 18:21:27,417 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 949 transitions. Word has length 51 [2022-07-22 18:21:27,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:21:27,417 INFO L495 AbstractCegarLoop]: Abstraction has 678 states and 949 transitions. [2022-07-22 18:21:27,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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) [2022-07-22 18:21:27,418 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 949 transitions. [2022-07-22 18:21:27,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-22 18:21:27,419 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:21:27,419 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] [2022-07-22 18:21:27,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 18:21:27,419 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-22 18:21:27,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:21:27,420 INFO L85 PathProgramCache]: Analyzing trace with hash -359372662, now seen corresponding path program 1 times [2022-07-22 18:21:27,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:21:27,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611760517] [2022-07-22 18:21:27,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:21:27,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:21:27,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:21:27,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:21:27,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:21:27,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611760517] [2022-07-22 18:21:27,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611760517] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:21:27,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:21:27,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:21:27,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674061009] [2022-07-22 18:21:27,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:21:27,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:21:27,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:21:27,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:21:27,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:21:27,486 INFO L87 Difference]: Start difference. First operand 678 states and 949 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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) [2022-07-22 18:21:27,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:21:27,534 INFO L93 Difference]: Finished difference Result 1307 states and 1856 transitions. [2022-07-22 18:21:27,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:21:27,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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 [2022-07-22 18:21:27,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:21:27,538 INFO L225 Difference]: With dead ends: 1307 [2022-07-22 18:21:27,538 INFO L226 Difference]: Without dead ends: 917 [2022-07-22 18:21:27,539 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 [2022-07-22 18:21:27,539 INFO L413 NwaCegarLoop]: 597 mSDtfsCounter, 366 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 932 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:21:27,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 932 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:21:27,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2022-07-22 18:21:27,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 907. [2022-07-22 18:21:27,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 907 states, 903 states have (on average 1.3820598006644518) internal successors, (1248), 906 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:21:27,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 1248 transitions. [2022-07-22 18:21:27,573 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 1248 transitions. Word has length 51 [2022-07-22 18:21:27,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:21:27,574 INFO L495 AbstractCegarLoop]: Abstraction has 907 states and 1248 transitions. [2022-07-22 18:21:27,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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) [2022-07-22 18:21:27,574 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 1248 transitions. [2022-07-22 18:21:27,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-22 18:21:27,575 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:21:27,576 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] [2022-07-22 18:21:27,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 18:21:27,576 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-22 18:21:27,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:21:27,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1979749037, now seen corresponding path program 1 times [2022-07-22 18:21:27,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:21:27,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066995904] [2022-07-22 18:21:27,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:21:27,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:21:27,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:21:27,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:21:27,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:21:27,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066995904] [2022-07-22 18:21:27,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066995904] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:21:27,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:21:27,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:21:27,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626378170] [2022-07-22 18:21:27,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:21:27,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:21:27,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:21:27,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:21:27,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:21:27,645 INFO L87 Difference]: Start difference. First operand 907 states and 1248 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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) [2022-07-22 18:21:27,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:21:27,736 INFO L93 Difference]: Finished difference Result 1892 states and 2673 transitions. [2022-07-22 18:21:27,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:21:27,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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 [2022-07-22 18:21:27,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:21:27,740 INFO L225 Difference]: With dead ends: 1892 [2022-07-22 18:21:27,741 INFO L226 Difference]: Without dead ends: 1391 [2022-07-22 18:21:27,742 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 [2022-07-22 18:21:27,742 INFO L413 NwaCegarLoop]: 580 mSDtfsCounter, 263 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:21:27,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 924 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:21:27,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2022-07-22 18:21:27,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1384. [2022-07-22 18:21:27,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1384 states, 1380 states have (on average 1.3898550724637682) internal successors, (1918), 1383 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:21:27,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 1918 transitions. [2022-07-22 18:21:27,802 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 1918 transitions. Word has length 51 [2022-07-22 18:21:27,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:21:27,802 INFO L495 AbstractCegarLoop]: Abstraction has 1384 states and 1918 transitions. [2022-07-22 18:21:27,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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) [2022-07-22 18:21:27,803 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 1918 transitions. [2022-07-22 18:21:27,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-22 18:21:27,804 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:21:27,804 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] [2022-07-22 18:21:27,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 18:21:27,805 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-22 18:21:27,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:21:27,805 INFO L85 PathProgramCache]: Analyzing trace with hash -2124032919, now seen corresponding path program 1 times [2022-07-22 18:21:27,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:21:27,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313550931] [2022-07-22 18:21:27,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:21:27,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:21:27,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:21:27,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:21:27,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:21:27,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313550931] [2022-07-22 18:21:27,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313550931] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:21:27,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:21:27,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:21:27,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797453915] [2022-07-22 18:21:27,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:21:27,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:21:27,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:21:27,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:21:27,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:21:27,851 INFO L87 Difference]: Start difference. First operand 1384 states and 1918 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 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) [2022-07-22 18:21:28,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:21:28,119 INFO L93 Difference]: Finished difference Result 2979 states and 4184 transitions. [2022-07-22 18:21:28,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:21:28,120 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 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 [2022-07-22 18:21:28,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:21:28,125 INFO L225 Difference]: With dead ends: 2979 [2022-07-22 18:21:28,125 INFO L226 Difference]: Without dead ends: 1766 [2022-07-22 18:21:28,126 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 [2022-07-22 18:21:28,127 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 1529 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1529 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 18:21:28,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1529 Valid, 371 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 18:21:28,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1766 states. [2022-07-22 18:21:28,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1766 to 1754. [2022-07-22 18:21:28,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1754 states, 1750 states have (on average 1.3982857142857144) internal successors, (2447), 1753 states have internal predecessors, (2447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:21:28,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1754 states to 1754 states and 2447 transitions. [2022-07-22 18:21:28,217 INFO L78 Accepts]: Start accepts. Automaton has 1754 states and 2447 transitions. Word has length 51 [2022-07-22 18:21:28,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:21:28,217 INFO L495 AbstractCegarLoop]: Abstraction has 1754 states and 2447 transitions. [2022-07-22 18:21:28,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 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) [2022-07-22 18:21:28,218 INFO L276 IsEmpty]: Start isEmpty. Operand 1754 states and 2447 transitions. [2022-07-22 18:21:28,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-22 18:21:28,220 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:21:28,223 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] [2022-07-22 18:21:28,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 18:21:28,224 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-22 18:21:28,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:21:28,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1035105163, now seen corresponding path program 1 times [2022-07-22 18:21:28,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:21:28,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763769175] [2022-07-22 18:21:28,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:21:28,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:21:28,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:21:28,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:21:28,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:21:28,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763769175] [2022-07-22 18:21:28,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763769175] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:21:28,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:21:28,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:21:28,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267595790] [2022-07-22 18:21:28,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:21:28,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:21:28,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:21:28,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:21:28,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:21:28,293 INFO L87 Difference]: Start difference. First operand 1754 states and 2447 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:21:28,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:21:28,601 INFO L93 Difference]: Finished difference Result 3899 states and 5482 transitions. [2022-07-22 18:21:28,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:21:28,602 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-07-22 18:21:28,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:21:28,609 INFO L225 Difference]: With dead ends: 3899 [2022-07-22 18:21:28,609 INFO L226 Difference]: Without dead ends: 2316 [2022-07-22 18:21:28,611 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 [2022-07-22 18:21:28,616 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 1372 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1372 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 18:21:28,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1372 Valid, 340 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 18:21:28,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2316 states. [2022-07-22 18:21:28,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2316 to 2300. [2022-07-22 18:21:28,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2300 states, 2296 states have (on average 1.3937282229965158) internal successors, (3200), 2299 states have internal predecessors, (3200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:21:28,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2300 states to 2300 states and 3200 transitions. [2022-07-22 18:21:28,769 INFO L78 Accepts]: Start accepts. Automaton has 2300 states and 3200 transitions. Word has length 52 [2022-07-22 18:21:28,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:21:28,769 INFO L495 AbstractCegarLoop]: Abstraction has 2300 states and 3200 transitions. [2022-07-22 18:21:28,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:21:28,769 INFO L276 IsEmpty]: Start isEmpty. Operand 2300 states and 3200 transitions. [2022-07-22 18:21:28,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-22 18:21:28,771 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:21:28,771 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] [2022-07-22 18:21:28,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 18:21:28,771 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-22 18:21:28,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:21:28,771 INFO L85 PathProgramCache]: Analyzing trace with hash 825819079, now seen corresponding path program 1 times [2022-07-22 18:21:28,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:21:28,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825861866] [2022-07-22 18:21:28,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:21:28,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:21:28,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:21:28,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:21:28,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:21:28,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825861866] [2022-07-22 18:21:28,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825861866] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:21:28,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:21:28,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 18:21:28,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798725314] [2022-07-22 18:21:28,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:21:28,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 18:21:28,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:21:28,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 18:21:28,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:21:28,833 INFO L87 Difference]: Start difference. First operand 2300 states and 3200 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) 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) [2022-07-22 18:21:29,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:21:29,463 INFO L93 Difference]: Finished difference Result 7352 states and 10455 transitions. [2022-07-22 18:21:29,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 18:21:29,463 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) 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 [2022-07-22 18:21:29,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:21:29,481 INFO L225 Difference]: With dead ends: 7352 [2022-07-22 18:21:29,481 INFO L226 Difference]: Without dead ends: 6322 [2022-07-22 18:21:29,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-07-22 18:21:29,484 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 2722 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2722 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 18:21:29,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2722 Valid, 604 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 18:21:29,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6322 states. [2022-07-22 18:21:29,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6322 to 2314. [2022-07-22 18:21:29,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2314 states, 2310 states have (on average 1.3930735930735931) internal successors, (3218), 2313 states have internal predecessors, (3218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:21:29,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2314 states to 2314 states and 3218 transitions. [2022-07-22 18:21:29,746 INFO L78 Accepts]: Start accepts. Automaton has 2314 states and 3218 transitions. Word has length 53 [2022-07-22 18:21:29,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:21:29,747 INFO L495 AbstractCegarLoop]: Abstraction has 2314 states and 3218 transitions. [2022-07-22 18:21:29,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) 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) [2022-07-22 18:21:29,747 INFO L276 IsEmpty]: Start isEmpty. Operand 2314 states and 3218 transitions. [2022-07-22 18:21:29,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-22 18:21:29,749 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:21:29,749 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] [2022-07-22 18:21:29,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 18:21:29,749 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-22 18:21:29,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:21:29,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1519774840, now seen corresponding path program 1 times [2022-07-22 18:21:29,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:21:29,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79907905] [2022-07-22 18:21:29,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:21:29,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:21:29,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:21:29,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:21:29,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:21:29,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79907905] [2022-07-22 18:21:29,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79907905] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:21:29,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:21:29,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 18:21:29,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206504030] [2022-07-22 18:21:29,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:21:29,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 18:21:29,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:21:29,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 18:21:29,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:21:29,843 INFO L87 Difference]: Start difference. First operand 2314 states and 3218 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) 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) [2022-07-22 18:21:30,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:21:30,772 INFO L93 Difference]: Finished difference Result 8112 states and 11565 transitions. [2022-07-22 18:21:30,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 18:21:30,773 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) 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 [2022-07-22 18:21:30,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:21:30,793 INFO L225 Difference]: With dead ends: 8112 [2022-07-22 18:21:30,793 INFO L226 Difference]: Without dead ends: 7269 [2022-07-22 18:21:30,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-07-22 18:21:30,796 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 2035 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2035 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 18:21:30,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2035 Valid, 765 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 18:21:30,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7269 states. [2022-07-22 18:21:31,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7269 to 2336. [2022-07-22 18:21:31,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2336 states, 2332 states have (on average 1.3932246998284734) internal successors, (3249), 2335 states have internal predecessors, (3249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:21:31,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2336 states to 2336 states and 3249 transitions. [2022-07-22 18:21:31,044 INFO L78 Accepts]: Start accepts. Automaton has 2336 states and 3249 transitions. Word has length 53 [2022-07-22 18:21:31,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:21:31,044 INFO L495 AbstractCegarLoop]: Abstraction has 2336 states and 3249 transitions. [2022-07-22 18:21:31,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) 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) [2022-07-22 18:21:31,044 INFO L276 IsEmpty]: Start isEmpty. Operand 2336 states and 3249 transitions. [2022-07-22 18:21:31,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-22 18:21:31,046 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:21:31,046 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] [2022-07-22 18:21:31,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 18:21:31,047 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-22 18:21:31,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:21:31,047 INFO L85 PathProgramCache]: Analyzing trace with hash -461927258, now seen corresponding path program 1 times [2022-07-22 18:21:31,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:21:31,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518464798] [2022-07-22 18:21:31,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:21:31,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:21:31,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:21:31,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:21:31,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:21:31,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518464798] [2022-07-22 18:21:31,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518464798] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:21:31,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:21:31,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 18:21:31,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142185762] [2022-07-22 18:21:31,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:21:31,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 18:21:31,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:21:31,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 18:21:31,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:21:31,094 INFO L87 Difference]: Start difference. First operand 2336 states and 3249 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) 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) [2022-07-22 18:21:32,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:21:32,301 INFO L93 Difference]: Finished difference Result 9735 states and 13865 transitions. [2022-07-22 18:21:32,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 18:21:32,301 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) 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 [2022-07-22 18:21:32,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:21:32,323 INFO L225 Difference]: With dead ends: 9735 [2022-07-22 18:21:32,324 INFO L226 Difference]: Without dead ends: 8767 [2022-07-22 18:21:32,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-07-22 18:21:32,327 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 3180 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3180 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 18:21:32,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3180 Valid, 658 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 18:21:32,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8767 states. [2022-07-22 18:21:32,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8767 to 2370. [2022-07-22 18:21:32,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2370 states, 2366 states have (on average 1.3918005071851225) internal successors, (3293), 2369 states have internal predecessors, (3293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:21:32,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2370 states to 2370 states and 3293 transitions. [2022-07-22 18:21:32,596 INFO L78 Accepts]: Start accepts. Automaton has 2370 states and 3293 transitions. Word has length 53 [2022-07-22 18:21:32,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:21:32,596 INFO L495 AbstractCegarLoop]: Abstraction has 2370 states and 3293 transitions. [2022-07-22 18:21:32,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) 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) [2022-07-22 18:21:32,596 INFO L276 IsEmpty]: Start isEmpty. Operand 2370 states and 3293 transitions. [2022-07-22 18:21:32,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-22 18:21:32,598 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:21:32,598 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] [2022-07-22 18:21:32,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 18:21:32,599 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-22 18:21:32,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:21:32,599 INFO L85 PathProgramCache]: Analyzing trace with hash -719043471, now seen corresponding path program 1 times [2022-07-22 18:21:32,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:21:32,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015169709] [2022-07-22 18:21:32,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:21:32,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:21:32,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:21:32,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:21:32,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:21:32,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015169709] [2022-07-22 18:21:32,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015169709] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:21:32,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:21:32,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 18:21:32,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581760565] [2022-07-22 18:21:32,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:21:32,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 18:21:32,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:21:32,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 18:21:32,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 18:21:32,673 INFO L87 Difference]: Start difference. First operand 2370 states and 3293 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 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) [2022-07-22 18:21:33,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:21:33,494 INFO L93 Difference]: Finished difference Result 5779 states and 8214 transitions. [2022-07-22 18:21:33,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 18:21:33,494 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 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 [2022-07-22 18:21:33,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:21:33,500 INFO L225 Difference]: With dead ends: 5779 [2022-07-22 18:21:33,500 INFO L226 Difference]: Without dead ends: 4241 [2022-07-22 18:21:33,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2022-07-22 18:21:33,503 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 2449 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2449 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 18:21:33,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2449 Valid, 946 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 666 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 18:21:33,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4241 states. [2022-07-22 18:21:33,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4241 to 2280. [2022-07-22 18:21:33,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2280 states, 2276 states have (on average 1.390597539543058) internal successors, (3165), 2279 states have internal predecessors, (3165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:21:33,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2280 states to 2280 states and 3165 transitions. [2022-07-22 18:21:33,718 INFO L78 Accepts]: Start accepts. Automaton has 2280 states and 3165 transitions. Word has length 54 [2022-07-22 18:21:33,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:21:33,718 INFO L495 AbstractCegarLoop]: Abstraction has 2280 states and 3165 transitions. [2022-07-22 18:21:33,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 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) [2022-07-22 18:21:33,718 INFO L276 IsEmpty]: Start isEmpty. Operand 2280 states and 3165 transitions. [2022-07-22 18:21:33,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-22 18:21:33,720 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:21:33,720 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] [2022-07-22 18:21:33,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 18:21:33,720 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-22 18:21:33,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:21:33,721 INFO L85 PathProgramCache]: Analyzing trace with hash 465454059, now seen corresponding path program 1 times [2022-07-22 18:21:33,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:21:33,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825476560] [2022-07-22 18:21:33,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:21:33,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:21:33,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:21:33,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:21:33,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:21:33,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825476560] [2022-07-22 18:21:33,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825476560] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:21:33,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:21:33,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 18:21:33,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026555073] [2022-07-22 18:21:33,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:21:33,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 18:21:33,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:21:33,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 18:21:33,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 18:21:33,797 INFO L87 Difference]: Start difference. First operand 2280 states and 3165 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 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) [2022-07-22 18:21:35,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:21:35,104 INFO L93 Difference]: Finished difference Result 7077 states and 10098 transitions. [2022-07-22 18:21:35,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 18:21:35,104 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 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 [2022-07-22 18:21:35,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:21:35,113 INFO L225 Difference]: With dead ends: 7077 [2022-07-22 18:21:35,113 INFO L226 Difference]: Without dead ends: 5699 [2022-07-22 18:21:35,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2022-07-22 18:21:35,117 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 2142 mSDsluCounter, 1256 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2142 SdHoareTripleChecker+Valid, 1563 SdHoareTripleChecker+Invalid, 1209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 18:21:35,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2142 Valid, 1563 Invalid, 1209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 18:21:35,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5699 states. [2022-07-22 18:21:35,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5699 to 2251. [2022-07-22 18:21:35,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2251 states, 2247 states have (on average 1.3902981753449044) internal successors, (3124), 2250 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:21:35,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2251 states to 2251 states and 3124 transitions. [2022-07-22 18:21:35,388 INFO L78 Accepts]: Start accepts. Automaton has 2251 states and 3124 transitions. Word has length 54 [2022-07-22 18:21:35,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:21:35,388 INFO L495 AbstractCegarLoop]: Abstraction has 2251 states and 3124 transitions. [2022-07-22 18:21:35,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 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) [2022-07-22 18:21:35,389 INFO L276 IsEmpty]: Start isEmpty. Operand 2251 states and 3124 transitions. [2022-07-22 18:21:35,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-22 18:21:35,390 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:21:35,391 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] [2022-07-22 18:21:35,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 18:21:35,391 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-22 18:21:35,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:21:35,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1085167472, now seen corresponding path program 1 times [2022-07-22 18:21:35,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:21:35,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297448796] [2022-07-22 18:21:35,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:21:35,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:21:35,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:21:35,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:21:35,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:21:35,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297448796] [2022-07-22 18:21:35,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297448796] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:21:35,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:21:35,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 18:21:35,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366644917] [2022-07-22 18:21:35,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:21:35,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 18:21:35,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:21:35,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 18:21:35,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-22 18:21:35,454 INFO L87 Difference]: Start difference. First operand 2251 states and 3124 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 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) [2022-07-22 18:21:36,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:21:36,624 INFO L93 Difference]: Finished difference Result 5391 states and 7658 transitions. [2022-07-22 18:21:36,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 18:21:36,625 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 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 [2022-07-22 18:21:36,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:21:36,633 INFO L225 Difference]: With dead ends: 5391 [2022-07-22 18:21:36,633 INFO L226 Difference]: Without dead ends: 5386 [2022-07-22 18:21:36,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2022-07-22 18:21:36,635 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 1237 mSDsluCounter, 938 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1237 SdHoareTripleChecker+Valid, 1233 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 18:21:36,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1237 Valid, 1233 Invalid, 923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 18:21:36,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5386 states. [2022-07-22 18:21:36,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5386 to 2251. [2022-07-22 18:21:36,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2251 states, 2247 states have (on average 1.3894080996884735) internal successors, (3122), 2250 states have internal predecessors, (3122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:21:36,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2251 states to 2251 states and 3122 transitions. [2022-07-22 18:21:36,905 INFO L78 Accepts]: Start accepts. Automaton has 2251 states and 3122 transitions. Word has length 54 [2022-07-22 18:21:36,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:21:36,905 INFO L495 AbstractCegarLoop]: Abstraction has 2251 states and 3122 transitions. [2022-07-22 18:21:36,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 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) [2022-07-22 18:21:36,905 INFO L276 IsEmpty]: Start isEmpty. Operand 2251 states and 3122 transitions. [2022-07-22 18:21:36,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-22 18:21:36,907 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:21:36,907 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:21:36,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 18:21:36,907 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-22 18:21:36,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:21:36,908 INFO L85 PathProgramCache]: Analyzing trace with hash -344500623, now seen corresponding path program 1 times [2022-07-22 18:21:36,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:21:36,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536525336] [2022-07-22 18:21:36,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:21:36,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:21:36,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:21:36,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:21:36,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:21:36,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536525336] [2022-07-22 18:21:36,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536525336] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:21:36,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:21:36,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:21:36,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222891861] [2022-07-22 18:21:36,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:21:36,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:21:36,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:21:36,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:21:36,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:21:36,934 INFO L87 Difference]: Start difference. First operand 2251 states and 3122 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:21:37,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:21:37,264 INFO L93 Difference]: Finished difference Result 3193 states and 4471 transitions. [2022-07-22 18:21:37,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:21:37,264 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2022-07-22 18:21:37,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:21:37,267 INFO L225 Difference]: With dead ends: 3193 [2022-07-22 18:21:37,268 INFO L226 Difference]: Without dead ends: 2258 [2022-07-22 18:21:37,269 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 [2022-07-22 18:21:37,270 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 224 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:21:37,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 798 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:21:37,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2258 states. [2022-07-22 18:21:37,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2258 to 2251. [2022-07-22 18:21:37,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2251 states, 2247 states have (on average 1.3760569648420116) internal successors, (3092), 2250 states have internal predecessors, (3092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:21:37,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2251 states to 2251 states and 3092 transitions. [2022-07-22 18:21:37,532 INFO L78 Accepts]: Start accepts. Automaton has 2251 states and 3092 transitions. Word has length 55 [2022-07-22 18:21:37,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:21:37,532 INFO L495 AbstractCegarLoop]: Abstraction has 2251 states and 3092 transitions. [2022-07-22 18:21:37,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:21:37,532 INFO L276 IsEmpty]: Start isEmpty. Operand 2251 states and 3092 transitions. [2022-07-22 18:21:37,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-22 18:21:37,534 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:21:37,534 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:21:37,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 18:21:37,534 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-22 18:21:37,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:21:37,535 INFO L85 PathProgramCache]: Analyzing trace with hash 29096373, now seen corresponding path program 1 times [2022-07-22 18:21:37,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:21:37,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213956740] [2022-07-22 18:21:37,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:21:37,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:21:37,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:21:37,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:21:37,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:21:37,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213956740] [2022-07-22 18:21:37,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213956740] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:21:37,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:21:37,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:21:37,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906086932] [2022-07-22 18:21:37,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:21:37,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:21:37,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:21:37,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:21:37,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:21:37,561 INFO L87 Difference]: Start difference. First operand 2251 states and 3092 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:21:37,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:21:37,830 INFO L93 Difference]: Finished difference Result 3252 states and 4507 transitions. [2022-07-22 18:21:37,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:21:37,831 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2022-07-22 18:21:37,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:21:37,834 INFO L225 Difference]: With dead ends: 3252 [2022-07-22 18:21:37,834 INFO L226 Difference]: Without dead ends: 2257 [2022-07-22 18:21:37,835 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 [2022-07-22 18:21:37,835 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 240 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 799 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:21:37,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 799 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:21:37,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2257 states. [2022-07-22 18:21:38,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2257 to 2251. [2022-07-22 18:21:38,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2251 states, 2247 states have (on average 1.3635959056519804) internal successors, (3064), 2250 states have internal predecessors, (3064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:21:38,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2251 states to 2251 states and 3064 transitions. [2022-07-22 18:21:38,090 INFO L78 Accepts]: Start accepts. Automaton has 2251 states and 3064 transitions. Word has length 55 [2022-07-22 18:21:38,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:21:38,090 INFO L495 AbstractCegarLoop]: Abstraction has 2251 states and 3064 transitions. [2022-07-22 18:21:38,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:21:38,091 INFO L276 IsEmpty]: Start isEmpty. Operand 2251 states and 3064 transitions. [2022-07-22 18:21:38,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-22 18:21:38,092 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:21:38,092 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:21:38,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 18:21:38,092 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-22 18:21:38,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:21:38,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1813019801, now seen corresponding path program 1 times [2022-07-22 18:21:38,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:21:38,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118062057] [2022-07-22 18:21:38,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:21:38,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:21:38,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:21:38,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:21:38,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:21:38,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118062057] [2022-07-22 18:21:38,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118062057] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:21:38,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:21:38,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:21:38,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615602933] [2022-07-22 18:21:38,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:21:38,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:21:38,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:21:38,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:21:38,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:21:38,118 INFO L87 Difference]: Start difference. First operand 2251 states and 3064 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:21:38,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:21:38,410 INFO L93 Difference]: Finished difference Result 3332 states and 4570 transitions. [2022-07-22 18:21:38,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:21:38,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2022-07-22 18:21:38,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:21:38,414 INFO L225 Difference]: With dead ends: 3332 [2022-07-22 18:21:38,414 INFO L226 Difference]: Without dead ends: 2242 [2022-07-22 18:21:38,416 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 [2022-07-22 18:21:38,417 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 259 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:21:38,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 814 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:21:38,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2242 states. [2022-07-22 18:21:38,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2242 to 2236. [2022-07-22 18:21:38,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2236 states, 2232 states have (on average 1.3440860215053763) internal successors, (3000), 2235 states have internal predecessors, (3000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:21:38,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2236 states to 2236 states and 3000 transitions. [2022-07-22 18:21:38,682 INFO L78 Accepts]: Start accepts. Automaton has 2236 states and 3000 transitions. Word has length 55 [2022-07-22 18:21:38,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:21:38,682 INFO L495 AbstractCegarLoop]: Abstraction has 2236 states and 3000 transitions. [2022-07-22 18:21:38,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:21:38,683 INFO L276 IsEmpty]: Start isEmpty. Operand 2236 states and 3000 transitions. [2022-07-22 18:21:38,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-22 18:21:38,684 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:21:38,684 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:21:38,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 18:21:38,685 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-22 18:21:38,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:21:38,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1260356730, now seen corresponding path program 1 times [2022-07-22 18:21:38,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:21:38,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165846474] [2022-07-22 18:21:38,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:21:38,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:21:38,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:21:38,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:21:38,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:21:38,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165846474] [2022-07-22 18:21:38,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165846474] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:21:38,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:21:38,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:21:38,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615961840] [2022-07-22 18:21:38,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:21:38,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:21:38,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:21:38,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:21:38,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:21:38,711 INFO L87 Difference]: Start difference. First operand 2236 states and 3000 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:21:39,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:21:39,078 INFO L93 Difference]: Finished difference Result 3997 states and 5436 transitions. [2022-07-22 18:21:39,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:21:39,078 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2022-07-22 18:21:39,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:21:39,081 INFO L225 Difference]: With dead ends: 3997 [2022-07-22 18:21:39,081 INFO L226 Difference]: Without dead ends: 2740 [2022-07-22 18:21:39,082 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 [2022-07-22 18:21:39,083 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 348 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:21:39,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 540 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:21:39,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2740 states. [2022-07-22 18:21:39,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2740 to 2054. [2022-07-22 18:21:39,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2054 states, 2050 states have (on average 1.3482926829268294) internal successors, (2764), 2053 states have internal predecessors, (2764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:21:39,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2054 states to 2054 states and 2764 transitions. [2022-07-22 18:21:39,332 INFO L78 Accepts]: Start accepts. Automaton has 2054 states and 2764 transitions. Word has length 56 [2022-07-22 18:21:39,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:21:39,332 INFO L495 AbstractCegarLoop]: Abstraction has 2054 states and 2764 transitions. [2022-07-22 18:21:39,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:21:39,332 INFO L276 IsEmpty]: Start isEmpty. Operand 2054 states and 2764 transitions. [2022-07-22 18:21:39,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-22 18:21:39,333 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:21:39,333 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:21:39,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 18:21:39,334 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-22 18:21:39,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:21:39,334 INFO L85 PathProgramCache]: Analyzing trace with hash -171160754, now seen corresponding path program 1 times [2022-07-22 18:21:39,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:21:39,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254597802] [2022-07-22 18:21:39,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:21:39,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:21:39,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:21:39,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:21:39,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:21:39,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254597802] [2022-07-22 18:21:39,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254597802] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:21:39,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:21:39,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:21:39,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117441034] [2022-07-22 18:21:39,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:21:39,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:21:39,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:21:39,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:21:39,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:21:39,357 INFO L87 Difference]: Start difference. First operand 2054 states and 2764 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:21:39,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:21:39,789 INFO L93 Difference]: Finished difference Result 3721 states and 5059 transitions. [2022-07-22 18:21:39,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:21:39,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2022-07-22 18:21:39,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:21:39,793 INFO L225 Difference]: With dead ends: 3721 [2022-07-22 18:21:39,793 INFO L226 Difference]: Without dead ends: 2477 [2022-07-22 18:21:39,794 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 [2022-07-22 18:21:39,795 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 300 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:21:39,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 458 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:21:39,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2477 states. [2022-07-22 18:21:40,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2477 to 1932. [2022-07-22 18:21:40,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1932 states, 1928 states have (on average 1.3526970954356847) internal successors, (2608), 1931 states have internal predecessors, (2608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:21:40,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1932 states to 1932 states and 2608 transitions. [2022-07-22 18:21:40,046 INFO L78 Accepts]: Start accepts. Automaton has 1932 states and 2608 transitions. Word has length 57 [2022-07-22 18:21:40,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:21:40,046 INFO L495 AbstractCegarLoop]: Abstraction has 1932 states and 2608 transitions. [2022-07-22 18:21:40,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:21:40,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1932 states and 2608 transitions. [2022-07-22 18:21:40,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-22 18:21:40,048 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:21:40,048 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:21:40,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 18:21:40,049 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-22 18:21:40,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:21:40,049 INFO L85 PathProgramCache]: Analyzing trace with hash -544179575, now seen corresponding path program 1 times [2022-07-22 18:21:40,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:21:40,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54515279] [2022-07-22 18:21:40,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:21:40,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:21:40,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:21:40,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:21:40,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:21:40,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54515279] [2022-07-22 18:21:40,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54515279] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:21:40,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:21:40,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-22 18:21:40,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670099500] [2022-07-22 18:21:40,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:21:40,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 18:21:40,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:21:40,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 18:21:40,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-22 18:21:40,247 INFO L87 Difference]: Start difference. First operand 1932 states and 2608 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:21:41,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:21:41,524 INFO L93 Difference]: Finished difference Result 3983 states and 5456 transitions. [2022-07-22 18:21:41,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 18:21:41,526 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2022-07-22 18:21:41,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:21:41,530 INFO L225 Difference]: With dead ends: 3983 [2022-07-22 18:21:41,530 INFO L226 Difference]: Without dead ends: 3777 [2022-07-22 18:21:41,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2022-07-22 18:21:41,531 INFO L413 NwaCegarLoop]: 554 mSDtfsCounter, 2564 mSDsluCounter, 2656 mSDsCounter, 0 mSdLazyCounter, 705 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2564 SdHoareTripleChecker+Valid, 3210 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 18:21:41,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2564 Valid, 3210 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 705 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 18:21:41,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3777 states. [2022-07-22 18:21:41,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3777 to 1907. [2022-07-22 18:21:41,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1907 states, 1904 states have (on average 1.3539915966386555) internal successors, (2578), 1906 states have internal predecessors, (2578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:21:41,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1907 states to 1907 states and 2578 transitions. [2022-07-22 18:21:41,827 INFO L78 Accepts]: Start accepts. Automaton has 1907 states and 2578 transitions. Word has length 57 [2022-07-22 18:21:41,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:21:41,827 INFO L495 AbstractCegarLoop]: Abstraction has 1907 states and 2578 transitions. [2022-07-22 18:21:41,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:21:41,828 INFO L276 IsEmpty]: Start isEmpty. Operand 1907 states and 2578 transitions. [2022-07-22 18:21:41,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-22 18:21:41,829 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:21:41,829 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:21:41,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 18:21:41,829 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-22 18:21:41,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:21:41,830 INFO L85 PathProgramCache]: Analyzing trace with hash 303331698, now seen corresponding path program 1 times [2022-07-22 18:21:41,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:21:41,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572359646] [2022-07-22 18:21:41,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:21:41,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:21:41,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:21:42,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:21:42,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:21:42,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572359646] [2022-07-22 18:21:42,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572359646] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:21:42,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:21:42,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-22 18:21:42,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413763860] [2022-07-22 18:21:42,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:21:42,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 18:21:42,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:21:42,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 18:21:42,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-22 18:21:42,034 INFO L87 Difference]: Start difference. First operand 1907 states and 2578 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:21:43,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:21:43,288 INFO L93 Difference]: Finished difference Result 3147 states and 4298 transitions. [2022-07-22 18:21:43,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 18:21:43,289 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2022-07-22 18:21:43,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:21:43,292 INFO L225 Difference]: With dead ends: 3147 [2022-07-22 18:21:43,292 INFO L226 Difference]: Without dead ends: 3086 [2022-07-22 18:21:43,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2022-07-22 18:21:43,293 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 2055 mSDsluCounter, 2315 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2055 SdHoareTripleChecker+Valid, 2761 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 18:21:43,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2055 Valid, 2761 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 18:21:43,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3086 states. [2022-07-22 18:21:43,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3086 to 1895. [2022-07-22 18:21:43,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1895 states, 1893 states have (on average 1.3544638140517697) internal successors, (2564), 1894 states have internal predecessors, (2564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:21:43,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1895 states to 1895 states and 2564 transitions. [2022-07-22 18:21:43,584 INFO L78 Accepts]: Start accepts. Automaton has 1895 states and 2564 transitions. Word has length 57 [2022-07-22 18:21:43,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:21:43,585 INFO L495 AbstractCegarLoop]: Abstraction has 1895 states and 2564 transitions. [2022-07-22 18:21:43,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:21:43,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1895 states and 2564 transitions. [2022-07-22 18:21:43,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-22 18:21:43,586 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:21:43,586 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:21:43,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-22 18:21:43,587 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-22 18:21:43,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:21:43,587 INFO L85 PathProgramCache]: Analyzing trace with hash 839862953, now seen corresponding path program 1 times [2022-07-22 18:21:43,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:21:43,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861316337] [2022-07-22 18:21:43,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:21:43,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:21:43,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:21:43,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:21:43,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:21:43,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861316337] [2022-07-22 18:21:43,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861316337] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:21:43,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:21:43,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 18:21:43,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775161963] [2022-07-22 18:21:43,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:21:43,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 18:21:43,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:21:43,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 18:21:43,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-07-22 18:21:43,740 INFO L87 Difference]: Start difference. First operand 1895 states and 2564 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:21:45,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:21:45,249 INFO L93 Difference]: Finished difference Result 4087 states and 5601 transitions. [2022-07-22 18:21:45,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-22 18:21:45,249 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2022-07-22 18:21:45,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:21:45,253 INFO L225 Difference]: With dead ends: 4087 [2022-07-22 18:21:45,253 INFO L226 Difference]: Without dead ends: 3873 [2022-07-22 18:21:45,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=203, Invalid=499, Unknown=0, NotChecked=0, Total=702 [2022-07-22 18:21:45,255 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 2607 mSDsluCounter, 2228 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2607 SdHoareTripleChecker+Valid, 2683 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 18:21:45,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2607 Valid, 2683 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 18:21:45,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3873 states. [2022-07-22 18:21:45,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3873 to 1844. [2022-07-22 18:21:45,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1844 states, 1843 states have (on average 1.3575691806836678) internal successors, (2502), 1843 states have internal predecessors, (2502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:21:45,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1844 states to 1844 states and 2502 transitions. [2022-07-22 18:21:45,606 INFO L78 Accepts]: Start accepts. Automaton has 1844 states and 2502 transitions. Word has length 57 [2022-07-22 18:21:45,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:21:45,606 INFO L495 AbstractCegarLoop]: Abstraction has 1844 states and 2502 transitions. [2022-07-22 18:21:45,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:21:45,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1844 states and 2502 transitions. [2022-07-22 18:21:45,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-22 18:21:45,608 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:21:45,608 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:21:45,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-22 18:21:45,609 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-22 18:21:45,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:21:45,609 INFO L85 PathProgramCache]: Analyzing trace with hash 485032383, now seen corresponding path program 1 times [2022-07-22 18:21:45,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:21:45,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407004937] [2022-07-22 18:21:45,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:21:45,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:21:45,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:21:45,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:21:45,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:21:45,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407004937] [2022-07-22 18:21:45,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407004937] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:21:45,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:21:45,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 18:21:45,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134520490] [2022-07-22 18:21:45,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:21:45,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:21:45,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:21:45,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:21:45,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:21:45,655 INFO L87 Difference]: Start difference. First operand 1844 states and 2502 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:21:46,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:21:46,355 INFO L93 Difference]: Finished difference Result 4234 states and 5899 transitions. [2022-07-22 18:21:46,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:21:46,355 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-07-22 18:21:46,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:21:46,358 INFO L225 Difference]: With dead ends: 4234 [2022-07-22 18:21:46,358 INFO L226 Difference]: Without dead ends: 3116 [2022-07-22 18:21:46,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:21:46,361 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 1071 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1071 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:21:46,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1071 Valid, 636 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:21:46,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3116 states. [2022-07-22 18:21:46,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3116 to 2748. [2022-07-22 18:21:46,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2748 states, 2747 states have (on average 1.358937022206043) internal successors, (3733), 2747 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) [2022-07-22 18:21:46,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2748 states to 2748 states and 3733 transitions. [2022-07-22 18:21:46,930 INFO L78 Accepts]: Start accepts. Automaton has 2748 states and 3733 transitions. Word has length 66 [2022-07-22 18:21:46,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:21:46,930 INFO L495 AbstractCegarLoop]: Abstraction has 2748 states and 3733 transitions. [2022-07-22 18:21:46,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:21:46,930 INFO L276 IsEmpty]: Start isEmpty. Operand 2748 states and 3733 transitions. [2022-07-22 18:21:46,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-22 18:21:46,932 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:21:46,933 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:21:46,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-22 18:21:46,933 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-22 18:21:46,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:21:46,933 INFO L85 PathProgramCache]: Analyzing trace with hash -656464105, now seen corresponding path program 1 times [2022-07-22 18:21:46,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:21:46,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090334330] [2022-07-22 18:21:46,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:21:46,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:21:46,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:21:46,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:21:46,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:21:46,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090334330] [2022-07-22 18:21:46,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090334330] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:21:46,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:21:46,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 18:21:46,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110502694] [2022-07-22 18:21:46,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:21:46,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:21:46,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:21:46,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:21:46,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:21:46,971 INFO L87 Difference]: Start difference. First operand 2748 states and 3733 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:21:47,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:21:47,590 INFO L93 Difference]: Finished difference Result 2754 states and 3736 transitions. [2022-07-22 18:21:47,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:21:47,592 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2022-07-22 18:21:47,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:21:47,595 INFO L225 Difference]: With dead ends: 2754 [2022-07-22 18:21:47,595 INFO L226 Difference]: Without dead ends: 2283 [2022-07-22 18:21:47,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:21:47,596 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 580 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:21:47,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [580 Valid, 694 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:21:47,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2283 states. [2022-07-22 18:21:48,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2283 to 2279. [2022-07-22 18:21:48,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2279 states, 2278 states have (on average 1.36215978928885) internal successors, (3103), 2278 states have internal predecessors, (3103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:21:48,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2279 states to 2279 states and 3103 transitions. [2022-07-22 18:21:48,122 INFO L78 Accepts]: Start accepts. Automaton has 2279 states and 3103 transitions. Word has length 67 [2022-07-22 18:21:48,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:21:48,123 INFO L495 AbstractCegarLoop]: Abstraction has 2279 states and 3103 transitions. [2022-07-22 18:21:48,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:21:48,123 INFO L276 IsEmpty]: Start isEmpty. Operand 2279 states and 3103 transitions. [2022-07-22 18:21:48,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-22 18:21:48,125 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:21:48,125 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:21:48,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-22 18:21:48,126 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-22 18:21:48,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:21:48,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1272488439, now seen corresponding path program 1 times [2022-07-22 18:21:48,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:21:48,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670967901] [2022-07-22 18:21:48,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:21:48,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:21:48,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:21:48,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:21:48,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:21:48,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670967901] [2022-07-22 18:21:48,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670967901] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:21:48,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:21:48,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:21:48,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485246921] [2022-07-22 18:21:48,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:21:48,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:21:48,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:21:48,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:21:48,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:21:48,154 INFO L87 Difference]: Start difference. First operand 2279 states and 3103 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:21:49,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:21:49,070 INFO L93 Difference]: Finished difference Result 5375 states and 7427 transitions. [2022-07-22 18:21:49,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:21:49,070 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2022-07-22 18:21:49,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:21:49,075 INFO L225 Difference]: With dead ends: 5375 [2022-07-22 18:21:49,075 INFO L226 Difference]: Without dead ends: 3757 [2022-07-22 18:21:49,076 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 [2022-07-22 18:21:49,076 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 123 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:21:49,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 557 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:21:49,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3757 states. [2022-07-22 18:21:49,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3757 to 3507. [2022-07-22 18:21:49,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3507 states, 3506 states have (on average 1.369937250427838) internal successors, (4803), 3506 states have internal predecessors, (4803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:21:49,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3507 states to 3507 states and 4803 transitions. [2022-07-22 18:21:49,902 INFO L78 Accepts]: Start accepts. Automaton has 3507 states and 4803 transitions. Word has length 68 [2022-07-22 18:21:49,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:21:49,902 INFO L495 AbstractCegarLoop]: Abstraction has 3507 states and 4803 transitions. [2022-07-22 18:21:49,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:21:49,902 INFO L276 IsEmpty]: Start isEmpty. Operand 3507 states and 4803 transitions. [2022-07-22 18:21:49,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-22 18:21:49,904 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:21:49,904 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:21:49,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-22 18:21:49,904 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-22 18:21:49,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:21:49,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1794430615, now seen corresponding path program 1 times [2022-07-22 18:21:49,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:21:49,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089418600] [2022-07-22 18:21:49,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:21:49,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:21:49,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:21:49,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:21:49,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:21:49,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089418600] [2022-07-22 18:21:49,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089418600] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:21:49,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:21:49,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:21:49,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50596658] [2022-07-22 18:21:49,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:21:49,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:21:49,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:21:49,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:21:49,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:21:49,930 INFO L87 Difference]: Start difference. First operand 3507 states and 4803 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:21:51,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:21:51,368 INFO L93 Difference]: Finished difference Result 8767 states and 12085 transitions. [2022-07-22 18:21:51,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:21:51,369 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2022-07-22 18:21:51,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:21:51,374 INFO L225 Difference]: With dead ends: 8767 [2022-07-22 18:21:51,374 INFO L226 Difference]: Without dead ends: 5783 [2022-07-22 18:21:51,377 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 [2022-07-22 18:21:51,377 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 118 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:21:51,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 553 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:21:51,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5783 states. [2022-07-22 18:21:52,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5783 to 5365. [2022-07-22 18:21:52,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5365 states, 5364 states have (on average 1.360738255033557) internal successors, (7299), 5364 states have internal predecessors, (7299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:21:52,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5365 states to 5365 states and 7299 transitions. [2022-07-22 18:21:52,729 INFO L78 Accepts]: Start accepts. Automaton has 5365 states and 7299 transitions. Word has length 70 [2022-07-22 18:21:52,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:21:52,729 INFO L495 AbstractCegarLoop]: Abstraction has 5365 states and 7299 transitions. [2022-07-22 18:21:52,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:21:52,729 INFO L276 IsEmpty]: Start isEmpty. Operand 5365 states and 7299 transitions. [2022-07-22 18:21:52,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-22 18:21:52,731 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:21:52,731 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:21:52,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-22 18:21:52,731 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-22 18:21:52,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:21:52,731 INFO L85 PathProgramCache]: Analyzing trace with hash -530798665, now seen corresponding path program 1 times [2022-07-22 18:21:52,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:21:52,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872290206] [2022-07-22 18:21:52,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:21:52,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:21:52,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:21:52,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:21:52,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:21:52,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872290206] [2022-07-22 18:21:52,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872290206] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:21:52,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:21:52,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:21:52,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461826388] [2022-07-22 18:21:52,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:21:52,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:21:52,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:21:52,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:21:52,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:21:52,757 INFO L87 Difference]: Start difference. First operand 5365 states and 7299 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:21:55,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:21:55,325 INFO L93 Difference]: Finished difference Result 14489 states and 19829 transitions. [2022-07-22 18:21:55,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:21:55,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2022-07-22 18:21:55,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:21:55,338 INFO L225 Difference]: With dead ends: 14489 [2022-07-22 18:21:55,338 INFO L226 Difference]: Without dead ends: 9647 [2022-07-22 18:21:55,342 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 [2022-07-22 18:21:55,342 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 97 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:21:55,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 528 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:21:55,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9647 states. [2022-07-22 18:21:57,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9647 to 8813. [2022-07-22 18:21:57,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8813 states, 8812 states have (on average 1.3571266454834316) internal successors, (11959), 8812 states have internal predecessors, (11959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:21:57,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8813 states to 8813 states and 11959 transitions. [2022-07-22 18:21:57,609 INFO L78 Accepts]: Start accepts. Automaton has 8813 states and 11959 transitions. Word has length 70 [2022-07-22 18:21:57,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:21:57,609 INFO L495 AbstractCegarLoop]: Abstraction has 8813 states and 11959 transitions. [2022-07-22 18:21:57,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:21:57,609 INFO L276 IsEmpty]: Start isEmpty. Operand 8813 states and 11959 transitions. [2022-07-22 18:21:57,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-22 18:21:57,611 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:21:57,611 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:21:57,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-22 18:21:57,611 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-22 18:21:57,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:21:57,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1176069985, now seen corresponding path program 1 times [2022-07-22 18:21:57,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:21:57,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699239570] [2022-07-22 18:21:57,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:21:57,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:21:57,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:21:57,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:21:57,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:21:57,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699239570] [2022-07-22 18:21:57,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699239570] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:21:57,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:21:57,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 18:21:57,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662579454] [2022-07-22 18:21:57,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:21:57,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 18:21:57,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:21:57,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 18:21:57,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 18:21:57,652 INFO L87 Difference]: Start difference. First operand 8813 states and 11959 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) [2022-07-22 18:22:03,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:22:03,280 INFO L93 Difference]: Finished difference Result 18941 states and 25281 transitions. [2022-07-22 18:22:03,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 18:22:03,281 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 72 [2022-07-22 18:22:03,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:22:03,304 INFO L225 Difference]: With dead ends: 18941 [2022-07-22 18:22:03,304 INFO L226 Difference]: Without dead ends: 18939 [2022-07-22 18:22:03,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-07-22 18:22:03,309 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 344 mSDsluCounter, 1005 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:22:03,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 1309 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:22:03,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18939 states. [2022-07-22 18:22:06,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18939 to 9725. [2022-07-22 18:22:06,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9725 states, 9724 states have (on average 1.3236322501028384) internal successors, (12871), 9724 states have internal predecessors, (12871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:22:06,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9725 states to 9725 states and 12871 transitions. [2022-07-22 18:22:06,145 INFO L78 Accepts]: Start accepts. Automaton has 9725 states and 12871 transitions. Word has length 72 [2022-07-22 18:22:06,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:22:06,145 INFO L495 AbstractCegarLoop]: Abstraction has 9725 states and 12871 transitions. [2022-07-22 18:22:06,145 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) [2022-07-22 18:22:06,146 INFO L276 IsEmpty]: Start isEmpty. Operand 9725 states and 12871 transitions. [2022-07-22 18:22:06,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-22 18:22:06,147 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:22:06,147 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:22:06,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-22 18:22:06,147 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-22 18:22:06,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:22:06,148 INFO L85 PathProgramCache]: Analyzing trace with hash 406807320, now seen corresponding path program 1 times [2022-07-22 18:22:06,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:22:06,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918379539] [2022-07-22 18:22:06,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:22:06,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:22:06,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:22:06,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:22:06,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:22:06,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918379539] [2022-07-22 18:22:06,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918379539] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:22:06,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:22:06,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:22:06,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442941315] [2022-07-22 18:22:06,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:22:06,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:22:06,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:22:06,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:22:06,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:22:06,174 INFO L87 Difference]: Start difference. First operand 9725 states and 12871 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 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) [2022-07-22 18:22:10,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:22:10,362 INFO L93 Difference]: Finished difference Result 23589 states and 31277 transitions. [2022-07-22 18:22:10,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:22:10,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 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 73 [2022-07-22 18:22:10,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:22:10,378 INFO L225 Difference]: With dead ends: 23589 [2022-07-22 18:22:10,378 INFO L226 Difference]: Without dead ends: 14387 [2022-07-22 18:22:10,386 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 [2022-07-22 18:22:10,386 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 193 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:22:10,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 377 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:22:10,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14387 states. [2022-07-22 18:22:14,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14387 to 14233. [2022-07-22 18:22:14,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14233 states, 14232 states have (on average 1.303752107925801) internal successors, (18555), 14232 states have internal predecessors, (18555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:22:14,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14233 states to 14233 states and 18555 transitions. [2022-07-22 18:22:14,703 INFO L78 Accepts]: Start accepts. Automaton has 14233 states and 18555 transitions. Word has length 73 [2022-07-22 18:22:14,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:22:14,703 INFO L495 AbstractCegarLoop]: Abstraction has 14233 states and 18555 transitions. [2022-07-22 18:22:14,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 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) [2022-07-22 18:22:14,704 INFO L276 IsEmpty]: Start isEmpty. Operand 14233 states and 18555 transitions. [2022-07-22 18:22:14,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-22 18:22:14,705 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:22:14,705 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:22:14,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-22 18:22:14,706 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-22 18:22:14,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:22:14,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1519050461, now seen corresponding path program 1 times [2022-07-22 18:22:14,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:22:14,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978647499] [2022-07-22 18:22:14,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:22:14,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:22:14,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:22:14,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:22:14,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:22:14,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978647499] [2022-07-22 18:22:14,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978647499] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:22:14,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:22:14,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 18:22:14,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6120577] [2022-07-22 18:22:14,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:22:14,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:22:14,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:22:14,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:22:14,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:22:14,748 INFO L87 Difference]: Start difference. First operand 14233 states and 18555 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 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) [2022-07-22 18:22:19,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:22:19,838 INFO L93 Difference]: Finished difference Result 20743 states and 27195 transitions. [2022-07-22 18:22:19,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:22:19,839 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 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 74 [2022-07-22 18:22:19,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:22:19,863 INFO L225 Difference]: With dead ends: 20743 [2022-07-22 18:22:19,863 INFO L226 Difference]: Without dead ends: 17267 [2022-07-22 18:22:19,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:22:19,870 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 637 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:22:19,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [637 Valid, 803 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:22:19,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17267 states. [2022-07-22 18:22:24,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17267 to 16091. [2022-07-22 18:22:24,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16091 states, 16090 states have (on average 1.2998756991920448) internal successors, (20915), 16090 states have internal predecessors, (20915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:22:24,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16091 states to 16091 states and 20915 transitions. [2022-07-22 18:22:24,800 INFO L78 Accepts]: Start accepts. Automaton has 16091 states and 20915 transitions. Word has length 74 [2022-07-22 18:22:24,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:22:24,800 INFO L495 AbstractCegarLoop]: Abstraction has 16091 states and 20915 transitions. [2022-07-22 18:22:24,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 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) [2022-07-22 18:22:24,801 INFO L276 IsEmpty]: Start isEmpty. Operand 16091 states and 20915 transitions. [2022-07-22 18:22:24,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-22 18:22:24,806 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:22:24,806 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:22:24,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-22 18:22:24,806 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-22 18:22:24,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:22:24,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1899335398, now seen corresponding path program 1 times [2022-07-22 18:22:24,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:22:24,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325231994] [2022-07-22 18:22:24,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:22:24,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:22:24,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:22:24,872 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-22 18:22:24,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:22:24,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325231994] [2022-07-22 18:22:24,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325231994] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:22:24,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:22:24,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 18:22:24,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414116789] [2022-07-22 18:22:24,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:22:24,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 18:22:24,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:22:24,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 18:22:24,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-22 18:22:24,874 INFO L87 Difference]: Start difference. First operand 16091 states and 20915 transitions. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:22:40,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:22:40,414 INFO L93 Difference]: Finished difference Result 58864 states and 76348 transitions. [2022-07-22 18:22:40,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-22 18:22:40,414 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 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 92 [2022-07-22 18:22:40,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:22:40,488 INFO L225 Difference]: With dead ends: 58864 [2022-07-22 18:22:40,488 INFO L226 Difference]: Without dead ends: 51000 [2022-07-22 18:22:40,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2022-07-22 18:22:40,505 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 1458 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1458 SdHoareTripleChecker+Valid, 1341 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 18:22:40,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1458 Valid, 1341 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 18:22:40,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51000 states. [2022-07-22 18:22:45,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51000 to 16033. [2022-07-22 18:22:45,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16033 states, 16032 states have (on average 1.3002120758483033) internal successors, (20845), 16032 states have internal predecessors, (20845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:22:45,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16033 states to 16033 states and 20845 transitions. [2022-07-22 18:22:45,813 INFO L78 Accepts]: Start accepts. Automaton has 16033 states and 20845 transitions. Word has length 92 [2022-07-22 18:22:45,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:22:45,814 INFO L495 AbstractCegarLoop]: Abstraction has 16033 states and 20845 transitions. [2022-07-22 18:22:45,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:22:45,814 INFO L276 IsEmpty]: Start isEmpty. Operand 16033 states and 20845 transitions. [2022-07-22 18:22:45,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-22 18:22:45,819 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:22:45,819 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:22:45,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-22 18:22:45,820 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-22 18:22:45,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:22:45,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1332578409, now seen corresponding path program 1 times [2022-07-22 18:22:45,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:22:45,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603569575] [2022-07-22 18:22:45,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:22:45,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:22:45,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:22:45,887 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-22 18:22:45,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:22:45,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603569575] [2022-07-22 18:22:45,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603569575] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:22:45,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:22:45,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 18:22:45,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043596338] [2022-07-22 18:22:45,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:22:45,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 18:22:45,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:22:45,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 18:22:45,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 18:22:45,890 INFO L87 Difference]: Start difference. First operand 16033 states and 20845 transitions. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:22:56,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:22:56,784 INFO L93 Difference]: Finished difference Result 40121 states and 52033 transitions. [2022-07-22 18:22:56,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 18:22:56,785 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 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 92 [2022-07-22 18:22:56,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:22:56,827 INFO L225 Difference]: With dead ends: 40121 [2022-07-22 18:22:56,827 INFO L226 Difference]: Without dead ends: 32439 [2022-07-22 18:22:56,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-07-22 18:22:56,840 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 1730 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1730 SdHoareTripleChecker+Valid, 948 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 18:22:56,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1730 Valid, 948 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 18:22:56,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32439 states. [2022-07-22 18:23:02,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32439 to 15999. [2022-07-22 18:23:02,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15999 states, 15998 states have (on average 1.3002875359419928) internal successors, (20802), 15998 states have internal predecessors, (20802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:23:02,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15999 states to 15999 states and 20802 transitions. [2022-07-22 18:23:02,199 INFO L78 Accepts]: Start accepts. Automaton has 15999 states and 20802 transitions. Word has length 92 [2022-07-22 18:23:02,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:23:02,199 INFO L495 AbstractCegarLoop]: Abstraction has 15999 states and 20802 transitions. [2022-07-22 18:23:02,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:23:02,200 INFO L276 IsEmpty]: Start isEmpty. Operand 15999 states and 20802 transitions. [2022-07-22 18:23:02,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-22 18:23:02,205 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:23:02,206 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:23:02,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-22 18:23:02,206 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-22 18:23:02,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:23:02,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1785022088, now seen corresponding path program 1 times [2022-07-22 18:23:02,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:23:02,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128428866] [2022-07-22 18:23:02,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:23:02,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:23:02,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:23:02,321 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:23:02,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:23:02,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128428866] [2022-07-22 18:23:02,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128428866] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 18:23:02,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425871266] [2022-07-22 18:23:02,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:23:02,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 18:23:02,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 18:23:02,323 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) [2022-07-22 18:23:02,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 18:23:02,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:23:02,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-22 18:23:02,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 18:23:03,415 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:23:03,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 18:23:04,171 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:23:04,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425871266] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 18:23:04,171 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 18:23:04,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 29 [2022-07-22 18:23:04,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70149254] [2022-07-22 18:23:04,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 18:23:04,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-22 18:23:04,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:23:04,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-22 18:23:04,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=765, Unknown=0, NotChecked=0, Total=870 [2022-07-22 18:23:04,173 INFO L87 Difference]: Start difference. First operand 15999 states and 20802 transitions. Second operand has 30 states, 30 states have (on average 8.133333333333333) internal successors, (244), 29 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:24:54,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:24:54,610 INFO L93 Difference]: Finished difference Result 224265 states and 285579 transitions. [2022-07-22 18:24:54,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 271 states. [2022-07-22 18:24:54,611 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 8.133333333333333) internal successors, (244), 29 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2022-07-22 18:24:54,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:24:55,105 INFO L225 Difference]: With dead ends: 224265 [2022-07-22 18:24:55,105 INFO L226 Difference]: Without dead ends: 216517 [2022-07-22 18:24:55,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 297 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36899 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=12438, Invalid=76664, Unknown=0, NotChecked=0, Total=89102 [2022-07-22 18:24:55,186 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 9310 mSDsluCounter, 10744 mSDsCounter, 0 mSdLazyCounter, 9923 mSolverCounterSat, 431 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9310 SdHoareTripleChecker+Valid, 11256 SdHoareTripleChecker+Invalid, 10354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 431 IncrementalHoareTripleChecker+Valid, 9923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:24:55,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9310 Valid, 11256 Invalid, 10354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [431 Valid, 9923 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-07-22 18:24:55,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216517 states. [2022-07-22 18:25:04,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216517 to 16561. [2022-07-22 18:25:04,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16561 states, 16560 states have (on average 1.2981280193236715) internal successors, (21497), 16560 states have internal predecessors, (21497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:25:04,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16561 states to 16561 states and 21497 transitions. [2022-07-22 18:25:04,490 INFO L78 Accepts]: Start accepts. Automaton has 16561 states and 21497 transitions. Word has length 93 [2022-07-22 18:25:04,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:25:04,490 INFO L495 AbstractCegarLoop]: Abstraction has 16561 states and 21497 transitions. [2022-07-22 18:25:04,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 8.133333333333333) internal successors, (244), 29 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:25:04,490 INFO L276 IsEmpty]: Start isEmpty. Operand 16561 states and 21497 transitions. [2022-07-22 18:25:04,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-22 18:25:04,495 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:25:04,496 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:25:04,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 18:25:04,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 18:25:04,698 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-22 18:25:04,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:25:04,698 INFO L85 PathProgramCache]: Analyzing trace with hash 85404025, now seen corresponding path program 1 times [2022-07-22 18:25:04,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:25:04,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080553006] [2022-07-22 18:25:04,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:25:04,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:25:04,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:25:04,811 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:25:04,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:25:04,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080553006] [2022-07-22 18:25:04,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080553006] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:25:04,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:25:04,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 18:25:04,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435689280] [2022-07-22 18:25:04,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:25:04,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 18:25:04,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:25:04,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 18:25:04,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-22 18:25:04,812 INFO L87 Difference]: Start difference. First operand 16561 states and 21497 transitions. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:25:27,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:25:27,648 INFO L93 Difference]: Finished difference Result 52847 states and 68036 transitions. [2022-07-22 18:25:27,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-22 18:25:27,649 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2022-07-22 18:25:27,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:25:27,706 INFO L225 Difference]: With dead ends: 52847 [2022-07-22 18:25:27,706 INFO L226 Difference]: Without dead ends: 44341 [2022-07-22 18:25:27,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2022-07-22 18:25:27,723 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 1956 mSDsluCounter, 1022 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1956 SdHoareTripleChecker+Valid, 1278 SdHoareTripleChecker+Invalid, 981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 18:25:27,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1956 Valid, 1278 Invalid, 981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 943 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 18:25:27,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44341 states. [2022-07-22 18:25:39,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44341 to 26455. [2022-07-22 18:25:39,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26455 states, 26454 states have (on average 1.2963256974370605) internal successors, (34293), 26454 states have internal predecessors, (34293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:25:39,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26455 states to 26455 states and 34293 transitions. [2022-07-22 18:25:39,937 INFO L78 Accepts]: Start accepts. Automaton has 26455 states and 34293 transitions. Word has length 93 [2022-07-22 18:25:39,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:25:39,938 INFO L495 AbstractCegarLoop]: Abstraction has 26455 states and 34293 transitions. [2022-07-22 18:25:39,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:25:39,938 INFO L276 IsEmpty]: Start isEmpty. Operand 26455 states and 34293 transitions. [2022-07-22 18:25:39,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-22 18:25:39,946 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:25:39,946 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:25:39,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-22 18:25:39,947 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-22 18:25:39,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:25:39,947 INFO L85 PathProgramCache]: Analyzing trace with hash 256518171, now seen corresponding path program 1 times [2022-07-22 18:25:39,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:25:39,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889681920] [2022-07-22 18:25:39,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:25:39,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:25:39,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:25:40,055 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:25:40,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:25:40,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889681920] [2022-07-22 18:25:40,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889681920] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 18:25:40,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193162986] [2022-07-22 18:25:40,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:25:40,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 18:25:40,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 18:25:40,058 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 18:25:40,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 18:25:40,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:25:40,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-22 18:25:40,193 INFO L286 TraceCheckSpWp]: Computing forward predicates...