./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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.4.2.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 d7923672572112c1e23e765d37ba0d9265e37954a51bbbf4393296aaafd9ce3e --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 18:10:35,091 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 18:10:35,093 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 18:10:35,125 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 18:10:35,126 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 18:10:35,127 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 18:10:35,128 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 18:10:35,129 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 18:10:35,131 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 18:10:35,132 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 18:10:35,132 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 18:10:35,133 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 18:10:35,134 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 18:10:35,134 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 18:10:35,135 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 18:10:35,136 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 18:10:35,137 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 18:10:35,138 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 18:10:35,139 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 18:10:35,141 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 18:10:35,142 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 18:10:35,143 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 18:10:35,144 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 18:10:35,145 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 18:10:35,146 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 18:10:35,149 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 18:10:35,149 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 18:10:35,149 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 18:10:35,150 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 18:10:35,150 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 18:10:35,151 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 18:10:35,152 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 18:10:35,152 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 18:10:35,153 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 18:10:35,153 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 18:10:35,154 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 18:10:35,155 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 18:10:35,155 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 18:10:35,155 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 18:10:35,156 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 18:10:35,157 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 18:10:35,157 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 18:10:35,158 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 18:10:35,176 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 18:10:35,177 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 18:10:35,177 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 18:10:35,177 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 18:10:35,178 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 18:10:35,178 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 18:10:35,179 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 18:10:35,179 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 18:10:35,179 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 18:10:35,179 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 18:10:35,180 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 18:10:35,180 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 18:10:35,180 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 18:10:35,180 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 18:10:35,180 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 18:10:35,181 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 18:10:35,181 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 18:10:35,181 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 18:10:35,181 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 18:10:35,181 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 18:10:35,182 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 18:10:35,182 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 18:10:35,182 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 18:10:35,182 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 18:10:35,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 18:10:35,183 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 18:10:35,183 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 18:10:35,183 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 18:10:35,183 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 18:10:35,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 18:10:35,184 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 18:10:35,184 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 18:10:35,184 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 18:10:35,184 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7923672572112c1e23e765d37ba0d9265e37954a51bbbf4393296aaafd9ce3e [2022-07-19 18:10:35,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 18:10:35,421 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 18:10:35,423 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 18:10:35,425 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 18:10:35,425 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 18:10:35,427 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-07-19 18:10:35,520 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5b9cff09/0aa25e3c95654077a76427ea834fdca7/FLAG0688cc2a8 [2022-07-19 18:10:36,147 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 18:10:36,152 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-07-19 18:10:36,172 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5b9cff09/0aa25e3c95654077a76427ea834fdca7/FLAG0688cc2a8 [2022-07-19 18:10:36,350 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5b9cff09/0aa25e3c95654077a76427ea834fdca7 [2022-07-19 18:10:36,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 18:10:36,355 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 18:10:36,357 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 18:10:36,357 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 18:10:36,360 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 18:10:36,361 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 06:10:36" (1/1) ... [2022-07-19 18:10:36,362 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b8f54f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:10:36, skipping insertion in model container [2022-07-19 18:10:36,362 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 06:10:36" (1/1) ... [2022-07-19 18:10:36,369 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 18:10:36,451 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 18:10:36,787 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.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[9988,10001] [2022-07-19 18:10:36,907 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.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[24517,24530] [2022-07-19 18:10:37,120 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 18:10:37,134 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 18:10:37,175 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.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[9988,10001] [2022-07-19 18:10:37,219 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.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[24517,24530] [2022-07-19 18:10:37,339 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 18:10:37,355 INFO L208 MainTranslator]: Completed translation [2022-07-19 18:10:37,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:10:37 WrapperNode [2022-07-19 18:10:37,356 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 18:10:37,357 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 18:10:37,358 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 18:10:37,358 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 18:10:37,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:10:37" (1/1) ... [2022-07-19 18:10:37,400 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:10:37" (1/1) ... [2022-07-19 18:10:37,462 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 3378 [2022-07-19 18:10:37,462 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 18:10:37,463 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 18:10:37,463 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 18:10:37,463 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 18:10:37,472 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:10:37" (1/1) ... [2022-07-19 18:10:37,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:10:37" (1/1) ... [2022-07-19 18:10:37,479 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:10:37" (1/1) ... [2022-07-19 18:10:37,480 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:10:37" (1/1) ... [2022-07-19 18:10:37,531 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:10:37" (1/1) ... [2022-07-19 18:10:37,555 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:10:37" (1/1) ... [2022-07-19 18:10:37,563 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:10:37" (1/1) ... [2022-07-19 18:10:37,577 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 18:10:37,578 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 18:10:37,578 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 18:10:37,579 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 18:10:37,588 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:10:37" (1/1) ... [2022-07-19 18:10:37,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 18:10:37,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 18:10:37,617 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) [2022-07-19 18:10:37,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 18:10:37,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 18:10:37,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 18:10:37,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 18:10:37,646 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 [2022-07-19 18:10:37,937 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 18:10:37,938 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 18:10:39,409 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 18:10:39,428 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 18:10:39,429 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 18:10:39,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 06:10:39 BoogieIcfgContainer [2022-07-19 18:10:39,432 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 18:10:39,435 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 18:10:39,436 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 18:10:39,438 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 18:10:39,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 06:10:36" (1/3) ... [2022-07-19 18:10:39,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8f5f8c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 06:10:39, skipping insertion in model container [2022-07-19 18:10:39,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:10:37" (2/3) ... [2022-07-19 18:10:39,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8f5f8c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 06:10:39, skipping insertion in model container [2022-07-19 18:10:39,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 06:10:39" (3/3) ... [2022-07-19 18:10:39,441 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-07-19 18:10:39,452 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 18:10:39,453 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-19 18:10:39,504 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 18:10:39,509 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@25e878e7, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@58a17a90 [2022-07-19 18:10:39,510 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-19 18:10:39,516 INFO L276 IsEmpty]: Start isEmpty. Operand has 702 states, 699 states have (on average 1.7854077253218885) internal successors, (1248), 701 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) [2022-07-19 18:10:39,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-19 18:10:39,532 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:10:39,533 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] [2022-07-19 18:10:39,533 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:10:39,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:10:39,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1557815088, now seen corresponding path program 1 times [2022-07-19 18:10:39,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:10:39,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215333775] [2022-07-19 18:10:39,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:10:39,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:10:39,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:10:39,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:10:39,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:10:39,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215333775] [2022-07-19 18:10:39,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215333775] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:10:39,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:10:39,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:10:39,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466189814] [2022-07-19 18:10:39,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:10:39,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:10:39,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:10:39,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:10:39,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:10:39,941 INFO L87 Difference]: Start difference. First operand has 702 states, 699 states have (on average 1.7854077253218885) internal successors, (1248), 701 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) Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:10:40,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:10:40,097 INFO L93 Difference]: Finished difference Result 1063 states and 1849 transitions. [2022-07-19 18:10:40,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:10:40,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2022-07-19 18:10:40,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:10:40,114 INFO L225 Difference]: With dead ends: 1063 [2022-07-19 18:10:40,115 INFO L226 Difference]: Without dead ends: 842 [2022-07-19 18:10:40,118 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 [2022-07-19 18:10:40,121 INFO L413 NwaCegarLoop]: 1246 mSDtfsCounter, 630 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 630 SdHoareTripleChecker+Valid, 2071 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:10:40,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [630 Valid, 2071 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:10:40,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2022-07-19 18:10:40,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 840. [2022-07-19 18:10:40,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 838 states have (on average 1.3723150357995226) internal successors, (1150), 839 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:10:40,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 1150 transitions. [2022-07-19 18:10:40,197 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 1150 transitions. Word has length 62 [2022-07-19 18:10:40,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:10:40,198 INFO L495 AbstractCegarLoop]: Abstraction has 840 states and 1150 transitions. [2022-07-19 18:10:40,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:10:40,199 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1150 transitions. [2022-07-19 18:10:40,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-19 18:10:40,204 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:10:40,204 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] [2022-07-19 18:10:40,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 18:10:40,205 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:10:40,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:10:40,206 INFO L85 PathProgramCache]: Analyzing trace with hash 701475668, now seen corresponding path program 1 times [2022-07-19 18:10:40,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:10:40,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854744655] [2022-07-19 18:10:40,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:10:40,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:10:40,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:10:40,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:10:40,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:10:40,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854744655] [2022-07-19 18:10:40,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854744655] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:10:40,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:10:40,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:10:40,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371597184] [2022-07-19 18:10:40,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:10:40,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:10:40,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:10:40,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:10:40,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:10:40,351 INFO L87 Difference]: Start difference. First operand 840 states and 1150 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:10:40,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:10:40,519 INFO L93 Difference]: Finished difference Result 1461 states and 2022 transitions. [2022-07-19 18:10:40,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:10:40,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-07-19 18:10:40,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:10:40,526 INFO L225 Difference]: With dead ends: 1461 [2022-07-19 18:10:40,526 INFO L226 Difference]: Without dead ends: 1221 [2022-07-19 18:10:40,530 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 [2022-07-19 18:10:40,531 INFO L413 NwaCegarLoop]: 1034 mSDtfsCounter, 548 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 1679 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 18:10:40,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [548 Valid, 1679 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 18:10:40,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1221 states. [2022-07-19 18:10:40,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1221 to 1217. [2022-07-19 18:10:40,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 1215 states have (on average 1.359670781893004) internal successors, (1652), 1216 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:10:40,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1652 transitions. [2022-07-19 18:10:40,593 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1652 transitions. Word has length 63 [2022-07-19 18:10:40,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:10:40,593 INFO L495 AbstractCegarLoop]: Abstraction has 1217 states and 1652 transitions. [2022-07-19 18:10:40,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:10:40,594 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1652 transitions. [2022-07-19 18:10:40,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-19 18:10:40,599 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:10:40,599 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] [2022-07-19 18:10:40,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 18:10:40,600 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:10:40,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:10:40,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1921206290, now seen corresponding path program 1 times [2022-07-19 18:10:40,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:10:40,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196819563] [2022-07-19 18:10:40,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:10:40,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:10:40,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:10:40,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:10:40,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:10:40,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196819563] [2022-07-19 18:10:40,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196819563] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:10:40,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:10:40,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:10:40,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32697629] [2022-07-19 18:10:40,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:10:40,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:10:40,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:10:40,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:10:40,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:10:40,707 INFO L87 Difference]: Start difference. First operand 1217 states and 1652 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:10:40,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:10:40,806 INFO L93 Difference]: Finished difference Result 2215 states and 3114 transitions. [2022-07-19 18:10:40,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:10:40,807 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-07-19 18:10:40,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:10:40,813 INFO L225 Difference]: With dead ends: 2215 [2022-07-19 18:10:40,814 INFO L226 Difference]: Without dead ends: 1684 [2022-07-19 18:10:40,815 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 [2022-07-19 18:10:40,816 INFO L413 NwaCegarLoop]: 947 mSDtfsCounter, 493 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 1576 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:10:40,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [493 Valid, 1576 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:10:40,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1684 states. [2022-07-19 18:10:40,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1684 to 1680. [2022-07-19 18:10:40,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1680 states, 1678 states have (on average 1.3790226460071513) internal successors, (2314), 1679 states have internal predecessors, (2314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:10:40,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1680 states to 1680 states and 2314 transitions. [2022-07-19 18:10:40,885 INFO L78 Accepts]: Start accepts. Automaton has 1680 states and 2314 transitions. Word has length 63 [2022-07-19 18:10:40,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:10:40,886 INFO L495 AbstractCegarLoop]: Abstraction has 1680 states and 2314 transitions. [2022-07-19 18:10:40,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:10:40,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1680 states and 2314 transitions. [2022-07-19 18:10:40,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-19 18:10:40,889 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:10:40,889 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] [2022-07-19 18:10:40,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 18:10:40,890 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:10:40,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:10:40,890 INFO L85 PathProgramCache]: Analyzing trace with hash 951298247, now seen corresponding path program 1 times [2022-07-19 18:10:40,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:10:40,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564889279] [2022-07-19 18:10:40,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:10:40,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:10:40,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:10:41,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:10:41,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:10:41,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564889279] [2022-07-19 18:10:41,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564889279] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:10:41,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:10:41,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 18:10:41,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127075929] [2022-07-19 18:10:41,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:10:41,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 18:10:41,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:10:41,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 18:10:41,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 18:10:41,003 INFO L87 Difference]: Start difference. First operand 1680 states and 2314 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:10:41,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:10:41,536 INFO L93 Difference]: Finished difference Result 3709 states and 5233 transitions. [2022-07-19 18:10:41,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 18:10:41,537 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-07-19 18:10:41,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:10:41,545 INFO L225 Difference]: With dead ends: 3709 [2022-07-19 18:10:41,546 INFO L226 Difference]: Without dead ends: 2253 [2022-07-19 18:10:41,548 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 [2022-07-19 18:10:41,549 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 2599 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2599 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 18:10:41,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2599 Valid, 574 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 18:10:41,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2253 states. [2022-07-19 18:10:41,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2253 to 2251. [2022-07-19 18:10:41,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2251 states, 2249 states have (on average 1.4104046242774566) internal successors, (3172), 2250 states have internal predecessors, (3172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:10:41,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2251 states to 2251 states and 3172 transitions. [2022-07-19 18:10:41,698 INFO L78 Accepts]: Start accepts. Automaton has 2251 states and 3172 transitions. Word has length 63 [2022-07-19 18:10:41,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:10:41,698 INFO L495 AbstractCegarLoop]: Abstraction has 2251 states and 3172 transitions. [2022-07-19 18:10:41,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:10:41,699 INFO L276 IsEmpty]: Start isEmpty. Operand 2251 states and 3172 transitions. [2022-07-19 18:10:41,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-19 18:10:41,702 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:10:41,702 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] [2022-07-19 18:10:41,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 18:10:41,702 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:10:41,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:10:41,703 INFO L85 PathProgramCache]: Analyzing trace with hash -778566540, now seen corresponding path program 1 times [2022-07-19 18:10:41,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:10:41,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352413702] [2022-07-19 18:10:41,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:10:41,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:10:41,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:10:41,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:10:41,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:10:41,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352413702] [2022-07-19 18:10:41,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352413702] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:10:41,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:10:41,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:10:41,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092428025] [2022-07-19 18:10:41,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:10:41,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:10:41,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:10:41,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:10:41,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:10:41,750 INFO L87 Difference]: Start difference. First operand 2251 states and 3172 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:10:41,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:10:41,953 INFO L93 Difference]: Finished difference Result 4648 states and 6627 transitions. [2022-07-19 18:10:41,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:10:41,954 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2022-07-19 18:10:41,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:10:41,966 INFO L225 Difference]: With dead ends: 4648 [2022-07-19 18:10:41,966 INFO L226 Difference]: Without dead ends: 3138 [2022-07-19 18:10:41,970 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 [2022-07-19 18:10:41,972 INFO L413 NwaCegarLoop]: 946 mSDtfsCounter, 578 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 1480 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 [2022-07-19 18:10:41,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [578 Valid, 1480 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:10:41,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3138 states. [2022-07-19 18:10:42,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3138 to 3128. [2022-07-19 18:10:42,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3128 states, 3126 states have (on average 1.3909149072296865) internal successors, (4348), 3127 states have internal predecessors, (4348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:10:42,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3128 states to 3128 states and 4348 transitions. [2022-07-19 18:10:42,155 INFO L78 Accepts]: Start accepts. Automaton has 3128 states and 4348 transitions. Word has length 64 [2022-07-19 18:10:42,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:10:42,158 INFO L495 AbstractCegarLoop]: Abstraction has 3128 states and 4348 transitions. [2022-07-19 18:10:42,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:10:42,158 INFO L276 IsEmpty]: Start isEmpty. Operand 3128 states and 4348 transitions. [2022-07-19 18:10:42,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 18:10:42,163 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:10:42,163 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] [2022-07-19 18:10:42,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 18:10:42,163 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:10:42,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:10:42,165 INFO L85 PathProgramCache]: Analyzing trace with hash -535437974, now seen corresponding path program 1 times [2022-07-19 18:10:42,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:10:42,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517720672] [2022-07-19 18:10:42,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:10:42,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:10:42,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:10:42,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:10:42,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:10:42,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517720672] [2022-07-19 18:10:42,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517720672] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:10:42,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:10:42,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 18:10:42,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117531850] [2022-07-19 18:10:42,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:10:42,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 18:10:42,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:10:42,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 18:10:42,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 18:10:42,243 INFO L87 Difference]: Start difference. First operand 3128 states and 4348 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:10:42,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:10:42,835 INFO L93 Difference]: Finished difference Result 6737 states and 9460 transitions. [2022-07-19 18:10:42,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 18:10:42,836 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-07-19 18:10:42,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:10:42,850 INFO L225 Difference]: With dead ends: 6737 [2022-07-19 18:10:42,850 INFO L226 Difference]: Without dead ends: 3943 [2022-07-19 18:10:42,854 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 [2022-07-19 18:10:42,856 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 2267 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2267 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 18:10:42,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2267 Valid, 521 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 18:10:42,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3943 states. [2022-07-19 18:10:43,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3943 to 3927. [2022-07-19 18:10:43,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3927 states, 3925 states have (on average 1.3946496815286624) internal successors, (5474), 3926 states have internal predecessors, (5474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:10:43,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3927 states to 3927 states and 5474 transitions. [2022-07-19 18:10:43,149 INFO L78 Accepts]: Start accepts. Automaton has 3927 states and 5474 transitions. Word has length 65 [2022-07-19 18:10:43,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:10:43,150 INFO L495 AbstractCegarLoop]: Abstraction has 3927 states and 5474 transitions. [2022-07-19 18:10:43,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:10:43,150 INFO L276 IsEmpty]: Start isEmpty. Operand 3927 states and 5474 transitions. [2022-07-19 18:10:43,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-19 18:10:43,155 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:10:43,155 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] [2022-07-19 18:10:43,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 18:10:43,156 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:10:43,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:10:43,156 INFO L85 PathProgramCache]: Analyzing trace with hash -881934793, now seen corresponding path program 1 times [2022-07-19 18:10:43,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:10:43,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649610898] [2022-07-19 18:10:43,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:10:43,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:10:43,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:10:43,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:10:43,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:10:43,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649610898] [2022-07-19 18:10:43,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649610898] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:10:43,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:10:43,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 18:10:43,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978813571] [2022-07-19 18:10:43,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:10:43,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 18:10:43,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:10:43,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 18:10:43,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 18:10:43,211 INFO L87 Difference]: Start difference. First operand 3927 states and 5474 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 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) [2022-07-19 18:10:43,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:10:43,855 INFO L93 Difference]: Finished difference Result 8987 states and 12601 transitions. [2022-07-19 18:10:43,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 18:10:43,856 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 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 [2022-07-19 18:10:43,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:10:43,875 INFO L225 Difference]: With dead ends: 8987 [2022-07-19 18:10:43,875 INFO L226 Difference]: Without dead ends: 5345 [2022-07-19 18:10:43,880 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 [2022-07-19 18:10:43,882 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 2339 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2339 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 18:10:43,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2339 Valid, 529 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 18:10:43,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5345 states. [2022-07-19 18:10:44,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5345 to 3927. [2022-07-19 18:10:44,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3927 states, 3925 states have (on average 1.3898089171974521) internal successors, (5455), 3926 states have internal predecessors, (5455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:10:44,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3927 states to 3927 states and 5455 transitions. [2022-07-19 18:10:44,187 INFO L78 Accepts]: Start accepts. Automaton has 3927 states and 5455 transitions. Word has length 66 [2022-07-19 18:10:44,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:10:44,188 INFO L495 AbstractCegarLoop]: Abstraction has 3927 states and 5455 transitions. [2022-07-19 18:10:44,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 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) [2022-07-19 18:10:44,188 INFO L276 IsEmpty]: Start isEmpty. Operand 3927 states and 5455 transitions. [2022-07-19 18:10:44,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-19 18:10:44,192 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:10:44,192 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] [2022-07-19 18:10:44,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 18:10:44,193 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:10:44,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:10:44,194 INFO L85 PathProgramCache]: Analyzing trace with hash -741572489, now seen corresponding path program 1 times [2022-07-19 18:10:44,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:10:44,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465824082] [2022-07-19 18:10:44,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:10:44,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:10:44,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:10:44,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:10:44,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:10:44,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465824082] [2022-07-19 18:10:44,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465824082] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:10:44,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:10:44,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 18:10:44,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058476464] [2022-07-19 18:10:44,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:10:44,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 18:10:44,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:10:44,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 18:10:44,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 18:10:44,275 INFO L87 Difference]: Start difference. First operand 3927 states and 5455 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 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) [2022-07-19 18:10:45,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:10:45,876 INFO L93 Difference]: Finished difference Result 13399 states and 19176 transitions. [2022-07-19 18:10:45,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 18:10:45,877 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 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 [2022-07-19 18:10:45,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:10:45,919 INFO L225 Difference]: With dead ends: 13399 [2022-07-19 18:10:45,919 INFO L226 Difference]: Without dead ends: 12233 [2022-07-19 18:10:45,925 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 [2022-07-19 18:10:45,926 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 4771 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4771 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 18:10:45,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4771 Valid, 1026 Invalid, 951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 18:10:45,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12233 states. [2022-07-19 18:10:46,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12233 to 3951. [2022-07-19 18:10:46,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3951 states, 3949 states have (on average 1.3894656875158269) internal successors, (5487), 3950 states have internal predecessors, (5487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:10:46,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3951 states to 3951 states and 5487 transitions. [2022-07-19 18:10:46,390 INFO L78 Accepts]: Start accepts. Automaton has 3951 states and 5487 transitions. Word has length 66 [2022-07-19 18:10:46,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:10:46,390 INFO L495 AbstractCegarLoop]: Abstraction has 3951 states and 5487 transitions. [2022-07-19 18:10:46,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 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) [2022-07-19 18:10:46,391 INFO L276 IsEmpty]: Start isEmpty. Operand 3951 states and 5487 transitions. [2022-07-19 18:10:46,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-19 18:10:46,395 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:10:46,395 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] [2022-07-19 18:10:46,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 18:10:46,396 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:10:46,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:10:46,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1492647215, now seen corresponding path program 1 times [2022-07-19 18:10:46,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:10:46,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056760869] [2022-07-19 18:10:46,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:10:46,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:10:46,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:10:46,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:10:46,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:10:46,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056760869] [2022-07-19 18:10:46,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056760869] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:10:46,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:10:46,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 18:10:46,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505766882] [2022-07-19 18:10:46,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:10:46,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 18:10:46,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:10:46,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 18:10:46,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 18:10:46,466 INFO L87 Difference]: Start difference. First operand 3951 states and 5487 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 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) [2022-07-19 18:10:48,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:10:48,192 INFO L93 Difference]: Finished difference Result 12281 states and 17342 transitions. [2022-07-19 18:10:48,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 18:10:48,192 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 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 [2022-07-19 18:10:48,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:10:48,216 INFO L225 Difference]: With dead ends: 12281 [2022-07-19 18:10:48,217 INFO L226 Difference]: Without dead ends: 10904 [2022-07-19 18:10:48,222 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 [2022-07-19 18:10:48,222 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 4122 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4122 SdHoareTripleChecker+Valid, 938 SdHoareTripleChecker+Invalid, 862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 18:10:48,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4122 Valid, 938 Invalid, 862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 631 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 18:10:48,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10904 states. [2022-07-19 18:10:48,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10904 to 3979. [2022-07-19 18:10:48,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3979 states, 3977 states have (on average 1.3887352275584612) internal successors, (5523), 3978 states have internal predecessors, (5523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:10:48,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3979 states to 3979 states and 5523 transitions. [2022-07-19 18:10:48,789 INFO L78 Accepts]: Start accepts. Automaton has 3979 states and 5523 transitions. Word has length 67 [2022-07-19 18:10:48,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:10:48,790 INFO L495 AbstractCegarLoop]: Abstraction has 3979 states and 5523 transitions. [2022-07-19 18:10:48,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 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) [2022-07-19 18:10:48,790 INFO L276 IsEmpty]: Start isEmpty. Operand 3979 states and 5523 transitions. [2022-07-19 18:10:48,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-19 18:10:48,795 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:10:48,795 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] [2022-07-19 18:10:48,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 18:10:48,796 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:10:48,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:10:48,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1629228246, now seen corresponding path program 1 times [2022-07-19 18:10:48,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:10:48,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442179200] [2022-07-19 18:10:48,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:10:48,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:10:48,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:10:48,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:10:48,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:10:48,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442179200] [2022-07-19 18:10:48,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442179200] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:10:48,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:10:48,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 18:10:48,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941441969] [2022-07-19 18:10:48,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:10:48,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 18:10:48,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:10:48,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 18:10:48,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 18:10:48,851 INFO L87 Difference]: Start difference. First operand 3979 states and 5523 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 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) [2022-07-19 18:10:49,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:10:49,669 INFO L93 Difference]: Finished difference Result 8837 states and 12282 transitions. [2022-07-19 18:10:49,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 18:10:49,670 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 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 [2022-07-19 18:10:49,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:10:49,680 INFO L225 Difference]: With dead ends: 8837 [2022-07-19 18:10:49,680 INFO L226 Difference]: Without dead ends: 5166 [2022-07-19 18:10:49,687 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 [2022-07-19 18:10:49,687 INFO L413 NwaCegarLoop]: 361 mSDtfsCounter, 2057 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2057 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 18:10:49,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2057 Valid, 477 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 18:10:49,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5166 states. [2022-07-19 18:10:50,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5166 to 5144. [2022-07-19 18:10:50,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5144 states, 5142 states have (on average 1.3753403345001944) internal successors, (7072), 5143 states have internal predecessors, (7072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:10:50,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5144 states to 5144 states and 7072 transitions. [2022-07-19 18:10:50,207 INFO L78 Accepts]: Start accepts. Automaton has 5144 states and 7072 transitions. Word has length 67 [2022-07-19 18:10:50,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:10:50,207 INFO L495 AbstractCegarLoop]: Abstraction has 5144 states and 7072 transitions. [2022-07-19 18:10:50,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 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) [2022-07-19 18:10:50,208 INFO L276 IsEmpty]: Start isEmpty. Operand 5144 states and 7072 transitions. [2022-07-19 18:10:50,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-19 18:10:50,215 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:10:50,215 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] [2022-07-19 18:10:50,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 18:10:50,215 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:10:50,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:10:50,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1569192756, now seen corresponding path program 1 times [2022-07-19 18:10:50,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:10:50,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76097540] [2022-07-19 18:10:50,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:10:50,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:10:50,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:10:50,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:10:50,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:10:50,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76097540] [2022-07-19 18:10:50,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76097540] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:10:50,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:10:50,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 18:10:50,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066334841] [2022-07-19 18:10:50,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:10:50,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 18:10:50,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:10:50,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 18:10:50,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 18:10:50,291 INFO L87 Difference]: Start difference. First operand 5144 states and 7072 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 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) [2022-07-19 18:10:53,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:10:53,204 INFO L93 Difference]: Finished difference Result 21648 states and 30629 transitions. [2022-07-19 18:10:53,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 18:10:53,204 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 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 [2022-07-19 18:10:53,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:10:53,245 INFO L225 Difference]: With dead ends: 21648 [2022-07-19 18:10:53,245 INFO L226 Difference]: Without dead ends: 19448 [2022-07-19 18:10:53,256 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 [2022-07-19 18:10:53,257 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 4207 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 677 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4207 SdHoareTripleChecker+Valid, 1010 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 18:10:53,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4207 Valid, 1010 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 677 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 18:10:53,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19448 states. [2022-07-19 18:10:54,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19448 to 5241. [2022-07-19 18:10:54,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5241 states, 5239 states have (on average 1.3744989501813323) internal successors, (7201), 5240 states have internal predecessors, (7201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:10:54,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5241 states to 5241 states and 7201 transitions. [2022-07-19 18:10:54,046 INFO L78 Accepts]: Start accepts. Automaton has 5241 states and 7201 transitions. Word has length 68 [2022-07-19 18:10:54,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:10:54,046 INFO L495 AbstractCegarLoop]: Abstraction has 5241 states and 7201 transitions. [2022-07-19 18:10:54,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 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) [2022-07-19 18:10:54,046 INFO L276 IsEmpty]: Start isEmpty. Operand 5241 states and 7201 transitions. [2022-07-19 18:10:54,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-19 18:10:54,053 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:10:54,053 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] [2022-07-19 18:10:54,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 18:10:54,053 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:10:54,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:10:54,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1812754967, now seen corresponding path program 1 times [2022-07-19 18:10:54,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:10:54,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542541171] [2022-07-19 18:10:54,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:10:54,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:10:54,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:10:54,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:10:54,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:10:54,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542541171] [2022-07-19 18:10:54,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542541171] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:10:54,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:10:54,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 18:10:54,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844132747] [2022-07-19 18:10:54,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:10:54,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 18:10:54,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:10:54,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 18:10:54,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-19 18:10:54,193 INFO L87 Difference]: Start difference. First operand 5241 states and 7201 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:10:56,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:10:56,895 INFO L93 Difference]: Finished difference Result 15959 states and 22582 transitions. [2022-07-19 18:10:56,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 18:10:56,896 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2022-07-19 18:10:56,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:10:56,923 INFO L225 Difference]: With dead ends: 15959 [2022-07-19 18:10:56,924 INFO L226 Difference]: Without dead ends: 12925 [2022-07-19 18:10:56,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-07-19 18:10:56,934 INFO L413 NwaCegarLoop]: 477 mSDtfsCounter, 3390 mSDsluCounter, 1439 mSDsCounter, 0 mSdLazyCounter, 1386 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3390 SdHoareTripleChecker+Valid, 1916 SdHoareTripleChecker+Invalid, 1477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 18:10:56,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3390 Valid, 1916 Invalid, 1477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1386 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 18:10:56,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12925 states. [2022-07-19 18:10:57,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12925 to 5237. [2022-07-19 18:10:57,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5237 states, 5235 states have (on average 1.3740210124164278) internal successors, (7193), 5236 states have internal predecessors, (7193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:10:57,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5237 states to 5237 states and 7193 transitions. [2022-07-19 18:10:57,746 INFO L78 Accepts]: Start accepts. Automaton has 5237 states and 7193 transitions. Word has length 69 [2022-07-19 18:10:57,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:10:57,746 INFO L495 AbstractCegarLoop]: Abstraction has 5237 states and 7193 transitions. [2022-07-19 18:10:57,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:10:57,747 INFO L276 IsEmpty]: Start isEmpty. Operand 5237 states and 7193 transitions. [2022-07-19 18:10:57,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-19 18:10:57,752 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:10:57,752 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] [2022-07-19 18:10:57,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 18:10:57,753 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:10:57,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:10:57,753 INFO L85 PathProgramCache]: Analyzing trace with hash -445002902, now seen corresponding path program 1 times [2022-07-19 18:10:57,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:10:57,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594263693] [2022-07-19 18:10:57,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:10:57,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:10:57,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:10:57,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:10:57,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:10:57,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594263693] [2022-07-19 18:10:57,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594263693] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:10:57,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:10:57,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 18:10:57,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033229844] [2022-07-19 18:10:57,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:10:57,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 18:10:57,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:10:57,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 18:10:57,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-19 18:10:57,926 INFO L87 Difference]: Start difference. First operand 5237 states and 7193 transitions. Second operand has 10 states, 10 states have (on average 6.9) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:11:01,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:11:01,481 INFO L93 Difference]: Finished difference Result 18098 states and 25263 transitions. [2022-07-19 18:11:01,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 18:11:01,483 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2022-07-19 18:11:01,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:11:01,506 INFO L225 Difference]: With dead ends: 18098 [2022-07-19 18:11:01,507 INFO L226 Difference]: Without dead ends: 16480 [2022-07-19 18:11:01,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=192, Invalid=510, Unknown=0, NotChecked=0, Total=702 [2022-07-19 18:11:01,515 INFO L413 NwaCegarLoop]: 568 mSDtfsCounter, 3713 mSDsluCounter, 2118 mSDsCounter, 0 mSdLazyCounter, 2158 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3713 SdHoareTripleChecker+Valid, 2686 SdHoareTripleChecker+Invalid, 2221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 2158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:11:01,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3713 Valid, 2686 Invalid, 2221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 2158 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 18:11:01,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16480 states. [2022-07-19 18:11:02,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16480 to 5237. [2022-07-19 18:11:02,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5237 states, 5235 states have (on average 1.3736389684813755) internal successors, (7191), 5236 states have internal predecessors, (7191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:11:02,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5237 states to 5237 states and 7191 transitions. [2022-07-19 18:11:02,418 INFO L78 Accepts]: Start accepts. Automaton has 5237 states and 7191 transitions. Word has length 69 [2022-07-19 18:11:02,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:11:02,419 INFO L495 AbstractCegarLoop]: Abstraction has 5237 states and 7191 transitions. [2022-07-19 18:11:02,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:11:02,419 INFO L276 IsEmpty]: Start isEmpty. Operand 5237 states and 7191 transitions. [2022-07-19 18:11:02,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-19 18:11:02,425 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:11:02,425 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] [2022-07-19 18:11:02,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 18:11:02,425 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:11:02,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:11:02,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1293297930, now seen corresponding path program 1 times [2022-07-19 18:11:02,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:11:02,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953505579] [2022-07-19 18:11:02,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:11:02,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:11:02,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:11:02,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:11:02,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:11:02,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953505579] [2022-07-19 18:11:02,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953505579] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:11:02,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:11:02,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 18:11:02,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224683664] [2022-07-19 18:11:02,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:11:02,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 18:11:02,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:11:02,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 18:11:02,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-19 18:11:02,542 INFO L87 Difference]: Start difference. First operand 5237 states and 7191 transitions. Second operand has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 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) [2022-07-19 18:11:05,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:11:05,625 INFO L93 Difference]: Finished difference Result 16061 states and 22733 transitions. [2022-07-19 18:11:05,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 18:11:05,626 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 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 [2022-07-19 18:11:05,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:11:05,641 INFO L225 Difference]: With dead ends: 16061 [2022-07-19 18:11:05,641 INFO L226 Difference]: Without dead ends: 12985 [2022-07-19 18:11:05,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-07-19 18:11:05,648 INFO L413 NwaCegarLoop]: 466 mSDtfsCounter, 3483 mSDsluCounter, 1357 mSDsCounter, 0 mSdLazyCounter, 1265 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3483 SdHoareTripleChecker+Valid, 1823 SdHoareTripleChecker+Invalid, 1360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 18:11:05,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3483 Valid, 1823 Invalid, 1360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1265 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 18:11:05,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12985 states. [2022-07-19 18:11:06,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12985 to 5213. [2022-07-19 18:11:06,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5213 states, 5211 states have (on average 1.3724812895797351) internal successors, (7152), 5212 states have internal predecessors, (7152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:11:06,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5213 states to 5213 states and 7152 transitions. [2022-07-19 18:11:06,494 INFO L78 Accepts]: Start accepts. Automaton has 5213 states and 7152 transitions. Word has length 70 [2022-07-19 18:11:06,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:11:06,495 INFO L495 AbstractCegarLoop]: Abstraction has 5213 states and 7152 transitions. [2022-07-19 18:11:06,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 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) [2022-07-19 18:11:06,495 INFO L276 IsEmpty]: Start isEmpty. Operand 5213 states and 7152 transitions. [2022-07-19 18:11:06,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-19 18:11:06,501 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:11:06,502 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] [2022-07-19 18:11:06,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 18:11:06,502 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:11:06,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:11:06,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1552924457, now seen corresponding path program 1 times [2022-07-19 18:11:06,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:11:06,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590664855] [2022-07-19 18:11:06,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:11:06,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:11:06,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:11:06,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:11:06,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:11:06,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590664855] [2022-07-19 18:11:06,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590664855] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:11:06,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:11:06,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-19 18:11:06,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714591134] [2022-07-19 18:11:06,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:11:06,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-19 18:11:06,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:11:06,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-19 18:11:06,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-07-19 18:11:06,817 INFO L87 Difference]: Start difference. First operand 5213 states and 7152 transitions. Second operand has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 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) [2022-07-19 18:11:13,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:11:13,598 INFO L93 Difference]: Finished difference Result 30705 states and 43716 transitions. [2022-07-19 18:11:13,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 18:11:13,599 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 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 [2022-07-19 18:11:13,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:11:13,649 INFO L225 Difference]: With dead ends: 30705 [2022-07-19 18:11:13,650 INFO L226 Difference]: Without dead ends: 27473 [2022-07-19 18:11:13,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2022-07-19 18:11:13,665 INFO L413 NwaCegarLoop]: 852 mSDtfsCounter, 4613 mSDsluCounter, 4619 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4613 SdHoareTripleChecker+Valid, 5471 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 18:11:13,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4613 Valid, 5471 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 18:11:13,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27473 states. [2022-07-19 18:11:15,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27473 to 5003. [2022-07-19 18:11:15,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5003 states, 5001 states have (on average 1.3753249350129975) internal successors, (6878), 5002 states have internal predecessors, (6878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:11:15,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5003 states to 5003 states and 6878 transitions. [2022-07-19 18:11:15,411 INFO L78 Accepts]: Start accepts. Automaton has 5003 states and 6878 transitions. Word has length 70 [2022-07-19 18:11:15,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:11:15,412 INFO L495 AbstractCegarLoop]: Abstraction has 5003 states and 6878 transitions. [2022-07-19 18:11:15,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 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) [2022-07-19 18:11:15,412 INFO L276 IsEmpty]: Start isEmpty. Operand 5003 states and 6878 transitions. [2022-07-19 18:11:15,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-19 18:11:15,420 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:11:15,420 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] [2022-07-19 18:11:15,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 18:11:15,421 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:11:15,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:11:15,422 INFO L85 PathProgramCache]: Analyzing trace with hash -757708310, now seen corresponding path program 1 times [2022-07-19 18:11:15,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:11:15,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547138015] [2022-07-19 18:11:15,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:11:15,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:11:15,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:11:15,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:11:15,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:11:15,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547138015] [2022-07-19 18:11:15,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547138015] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:11:15,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:11:15,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 18:11:15,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658331897] [2022-07-19 18:11:15,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:11:15,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 18:11:15,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:11:15,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 18:11:15,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 18:11:15,505 INFO L87 Difference]: Start difference. First operand 5003 states and 6878 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 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) [2022-07-19 18:11:22,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:11:22,408 INFO L93 Difference]: Finished difference Result 18671 states and 26383 transitions. [2022-07-19 18:11:22,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 18:11:22,409 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 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 [2022-07-19 18:11:22,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:11:22,443 INFO L225 Difference]: With dead ends: 18671 [2022-07-19 18:11:22,443 INFO L226 Difference]: Without dead ends: 16635 [2022-07-19 18:11:22,452 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 [2022-07-19 18:11:22,453 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 2836 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2836 SdHoareTripleChecker+Valid, 1085 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 18:11:22,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2836 Valid, 1085 Invalid, 995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 18:11:22,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16635 states. [2022-07-19 18:11:24,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16635 to 5074. [2022-07-19 18:11:24,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5074 states, 5072 states have (on average 1.3755914826498423) internal successors, (6977), 5073 states have internal predecessors, (6977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:11:24,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5074 states to 5074 states and 6977 transitions. [2022-07-19 18:11:24,478 INFO L78 Accepts]: Start accepts. Automaton has 5074 states and 6977 transitions. Word has length 70 [2022-07-19 18:11:24,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:11:24,478 INFO L495 AbstractCegarLoop]: Abstraction has 5074 states and 6977 transitions. [2022-07-19 18:11:24,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 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) [2022-07-19 18:11:24,479 INFO L276 IsEmpty]: Start isEmpty. Operand 5074 states and 6977 transitions. [2022-07-19 18:11:24,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-19 18:11:24,508 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:11:24,508 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] [2022-07-19 18:11:24,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 18:11:24,509 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:11:24,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:11:24,509 INFO L85 PathProgramCache]: Analyzing trace with hash 55096187, now seen corresponding path program 1 times [2022-07-19 18:11:24,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:11:24,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44919698] [2022-07-19 18:11:24,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:11:24,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:11:24,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:11:25,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:11:25,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:11:25,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44919698] [2022-07-19 18:11:25,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44919698] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:11:25,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:11:25,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-19 18:11:25,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488400530] [2022-07-19 18:11:25,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:11:25,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-19 18:11:25,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:11:25,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-19 18:11:25,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-07-19 18:11:25,022 INFO L87 Difference]: Start difference. First operand 5074 states and 6977 transitions. Second operand has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 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) [2022-07-19 18:11:41,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:11:41,239 INFO L93 Difference]: Finished difference Result 35132 states and 50360 transitions. [2022-07-19 18:11:41,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-19 18:11:41,240 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 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 [2022-07-19 18:11:41,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:11:41,313 INFO L225 Difference]: With dead ends: 35132 [2022-07-19 18:11:41,314 INFO L226 Difference]: Without dead ends: 32100 [2022-07-19 18:11:41,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=221, Invalid=771, Unknown=0, NotChecked=0, Total=992 [2022-07-19 18:11:41,345 INFO L413 NwaCegarLoop]: 705 mSDtfsCounter, 4436 mSDsluCounter, 7260 mSDsCounter, 0 mSdLazyCounter, 2205 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4436 SdHoareTripleChecker+Valid, 7965 SdHoareTripleChecker+Invalid, 2310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 2205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-19 18:11:41,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4436 Valid, 7965 Invalid, 2310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 2205 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-19 18:11:41,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32100 states. [2022-07-19 18:11:43,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32100 to 5068. [2022-07-19 18:11:43,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5068 states, 5066 states have (on average 1.3748519542045006) internal successors, (6965), 5067 states have internal predecessors, (6965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:11:43,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5068 states to 5068 states and 6965 transitions. [2022-07-19 18:11:43,540 INFO L78 Accepts]: Start accepts. Automaton has 5068 states and 6965 transitions. Word has length 70 [2022-07-19 18:11:43,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:11:43,540 INFO L495 AbstractCegarLoop]: Abstraction has 5068 states and 6965 transitions. [2022-07-19 18:11:43,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 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) [2022-07-19 18:11:43,541 INFO L276 IsEmpty]: Start isEmpty. Operand 5068 states and 6965 transitions. [2022-07-19 18:11:43,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-19 18:11:43,547 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:11:43,547 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] [2022-07-19 18:11:43,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 18:11:43,548 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:11:43,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:11:43,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1421654202, now seen corresponding path program 1 times [2022-07-19 18:11:43,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:11:43,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28721232] [2022-07-19 18:11:43,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:11:43,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:11:43,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:11:44,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:11:44,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:11:44,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28721232] [2022-07-19 18:11:44,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28721232] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:11:44,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:11:44,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-19 18:11:44,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117554951] [2022-07-19 18:11:44,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:11:44,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-19 18:11:44,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:11:44,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-19 18:11:44,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-07-19 18:11:44,038 INFO L87 Difference]: Start difference. First operand 5068 states and 6965 transitions. Second operand has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:11:55,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:11:55,014 INFO L93 Difference]: Finished difference Result 27397 states and 39092 transitions. [2022-07-19 18:11:55,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 18:11:55,015 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2022-07-19 18:11:55,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:11:55,045 INFO L225 Difference]: With dead ends: 27397 [2022-07-19 18:11:55,045 INFO L226 Difference]: Without dead ends: 24286 [2022-07-19 18:11:55,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=167, Invalid=483, Unknown=0, NotChecked=0, Total=650 [2022-07-19 18:11:55,054 INFO L413 NwaCegarLoop]: 878 mSDtfsCounter, 3685 mSDsluCounter, 5567 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3685 SdHoareTripleChecker+Valid, 6445 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 18:11:55,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3685 Valid, 6445 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 18:11:55,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24286 states. [2022-07-19 18:11:57,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24286 to 4983. [2022-07-19 18:11:57,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4983 states, 4982 states have (on average 1.372340425531915) internal successors, (6837), 4982 states have internal predecessors, (6837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:11:57,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4983 states to 4983 states and 6837 transitions. [2022-07-19 18:11:57,141 INFO L78 Accepts]: Start accepts. Automaton has 4983 states and 6837 transitions. Word has length 71 [2022-07-19 18:11:57,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:11:57,142 INFO L495 AbstractCegarLoop]: Abstraction has 4983 states and 6837 transitions. [2022-07-19 18:11:57,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:11:57,142 INFO L276 IsEmpty]: Start isEmpty. Operand 4983 states and 6837 transitions. [2022-07-19 18:11:57,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-19 18:11:57,148 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:11:57,149 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] [2022-07-19 18:11:57,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 18:11:57,149 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:11:57,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:11:57,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1130829185, now seen corresponding path program 1 times [2022-07-19 18:11:57,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:11:57,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514539784] [2022-07-19 18:11:57,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:11:57,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:11:57,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:11:57,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:11:57,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:11:57,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514539784] [2022-07-19 18:11:57,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514539784] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:11:57,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:11:57,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 18:11:57,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109823604] [2022-07-19 18:11:57,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:11:57,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 18:11:57,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:11:57,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 18:11:57,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 18:11:57,290 INFO L87 Difference]: Start difference. First operand 4983 states and 6837 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:12:08,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:12:08,758 INFO L93 Difference]: Finished difference Result 21166 states and 30003 transitions. [2022-07-19 18:12:08,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 18:12:08,759 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2022-07-19 18:12:08,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:12:08,796 INFO L225 Difference]: With dead ends: 21166 [2022-07-19 18:12:08,797 INFO L226 Difference]: Without dead ends: 19084 [2022-07-19 18:12:08,808 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 [2022-07-19 18:12:08,809 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 2876 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2876 SdHoareTripleChecker+Valid, 1050 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 18:12:08,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2876 Valid, 1050 Invalid, 897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 18:12:08,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19084 states. [2022-07-19 18:12:11,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19084 to 5013. [2022-07-19 18:12:11,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5013 states, 5012 states have (on average 1.3721069433359936) internal successors, (6877), 5012 states have internal predecessors, (6877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:12:11,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5013 states to 5013 states and 6877 transitions. [2022-07-19 18:12:11,227 INFO L78 Accepts]: Start accepts. Automaton has 5013 states and 6877 transitions. Word has length 71 [2022-07-19 18:12:11,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:12:11,228 INFO L495 AbstractCegarLoop]: Abstraction has 5013 states and 6877 transitions. [2022-07-19 18:12:11,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:12:11,228 INFO L276 IsEmpty]: Start isEmpty. Operand 5013 states and 6877 transitions. [2022-07-19 18:12:11,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-19 18:12:11,234 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:12:11,235 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] [2022-07-19 18:12:11,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 18:12:11,235 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:12:11,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:12:11,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1491852773, now seen corresponding path program 1 times [2022-07-19 18:12:11,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:12:11,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171754628] [2022-07-19 18:12:11,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:12:11,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:12:11,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:12:11,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:12:11,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:12:11,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171754628] [2022-07-19 18:12:11,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171754628] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:12:11,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:12:11,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 18:12:11,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887950347] [2022-07-19 18:12:11,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:12:11,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 18:12:11,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:12:11,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 18:12:11,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-19 18:12:11,465 INFO L87 Difference]: Start difference. First operand 5013 states and 6877 transitions. Second operand has 10 states, 10 states have (on average 7.1) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:12:23,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:12:23,335 INFO L93 Difference]: Finished difference Result 21393 states and 30303 transitions. [2022-07-19 18:12:23,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 18:12:23,336 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.1) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2022-07-19 18:12:23,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:12:23,372 INFO L225 Difference]: With dead ends: 21393 [2022-07-19 18:12:23,372 INFO L226 Difference]: Without dead ends: 18105 [2022-07-19 18:12:23,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2022-07-19 18:12:23,385 INFO L413 NwaCegarLoop]: 486 mSDtfsCounter, 3268 mSDsluCounter, 2318 mSDsCounter, 0 mSdLazyCounter, 1785 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3268 SdHoareTripleChecker+Valid, 2804 SdHoareTripleChecker+Invalid, 1879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-19 18:12:23,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3268 Valid, 2804 Invalid, 1879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1785 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-19 18:12:23,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18105 states. [2022-07-19 18:12:25,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18105 to 4876. [2022-07-19 18:12:25,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4876 states, 4875 states have (on average 1.3721025641025641) internal successors, (6689), 4875 states have internal predecessors, (6689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:12:25,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4876 states to 4876 states and 6689 transitions. [2022-07-19 18:12:25,989 INFO L78 Accepts]: Start accepts. Automaton has 4876 states and 6689 transitions. Word has length 71 [2022-07-19 18:12:25,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:12:25,989 INFO L495 AbstractCegarLoop]: Abstraction has 4876 states and 6689 transitions. [2022-07-19 18:12:25,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.1) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:12:25,990 INFO L276 IsEmpty]: Start isEmpty. Operand 4876 states and 6689 transitions. [2022-07-19 18:12:25,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-19 18:12:25,995 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:12:25,995 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] [2022-07-19 18:12:25,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 18:12:25,996 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:12:25,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:12:25,996 INFO L85 PathProgramCache]: Analyzing trace with hash -697354618, now seen corresponding path program 1 times [2022-07-19 18:12:25,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:12:25,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244208137] [2022-07-19 18:12:25,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:12:25,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:12:26,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:12:26,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:12:26,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:12:26,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244208137] [2022-07-19 18:12:26,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244208137] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:12:26,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:12:26,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-19 18:12:26,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182967581] [2022-07-19 18:12:26,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:12:26,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-19 18:12:26,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:12:26,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-19 18:12:26,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-19 18:12:26,372 INFO L87 Difference]: Start difference. First operand 4876 states and 6689 transitions. Second operand has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 13 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) [2022-07-19 18:12:46,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:12:46,817 INFO L93 Difference]: Finished difference Result 33561 states and 47671 transitions. [2022-07-19 18:12:46,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-19 18:12:46,818 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 13 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 [2022-07-19 18:12:46,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:12:46,885 INFO L225 Difference]: With dead ends: 33561 [2022-07-19 18:12:46,885 INFO L226 Difference]: Without dead ends: 31519 [2022-07-19 18:12:46,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=324, Invalid=866, Unknown=0, NotChecked=0, Total=1190 [2022-07-19 18:12:46,900 INFO L413 NwaCegarLoop]: 681 mSDtfsCounter, 4905 mSDsluCounter, 3588 mSDsCounter, 0 mSdLazyCounter, 1124 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4905 SdHoareTripleChecker+Valid, 4269 SdHoareTripleChecker+Invalid, 1184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 18:12:46,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4905 Valid, 4269 Invalid, 1184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1124 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-19 18:12:46,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31519 states. [2022-07-19 18:12:49,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31519 to 4867. [2022-07-19 18:12:49,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4867 states, 4866 states have (on average 1.3721742704480067) internal successors, (6677), 4866 states have internal predecessors, (6677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:12:49,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4867 states to 4867 states and 6677 transitions. [2022-07-19 18:12:49,264 INFO L78 Accepts]: Start accepts. Automaton has 4867 states and 6677 transitions. Word has length 72 [2022-07-19 18:12:49,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:12:49,264 INFO L495 AbstractCegarLoop]: Abstraction has 4867 states and 6677 transitions. [2022-07-19 18:12:49,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 13 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) [2022-07-19 18:12:49,264 INFO L276 IsEmpty]: Start isEmpty. Operand 4867 states and 6677 transitions. [2022-07-19 18:12:49,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-19 18:12:49,268 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:12:49,268 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] [2022-07-19 18:12:49,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-19 18:12:49,268 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:12:49,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:12:49,269 INFO L85 PathProgramCache]: Analyzing trace with hash -967274292, now seen corresponding path program 1 times [2022-07-19 18:12:49,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:12:49,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096477892] [2022-07-19 18:12:49,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:12:49,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:12:49,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:12:49,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:12:49,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:12:49,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096477892] [2022-07-19 18:12:49,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096477892] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:12:49,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:12:49,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:12:49,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121395388] [2022-07-19 18:12:49,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:12:49,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:12:49,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:12:49,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:12:49,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:12:49,310 INFO L87 Difference]: Start difference. First operand 4867 states and 6677 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) [2022-07-19 18:12:51,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:12:51,480 INFO L93 Difference]: Finished difference Result 7236 states and 10025 transitions. [2022-07-19 18:12:51,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:12:51,480 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 [2022-07-19 18:12:51,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:12:51,487 INFO L225 Difference]: With dead ends: 7236 [2022-07-19 18:12:51,487 INFO L226 Difference]: Without dead ends: 4869 [2022-07-19 18:12:51,490 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 [2022-07-19 18:12:51,491 INFO L413 NwaCegarLoop]: 720 mSDtfsCounter, 328 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 1226 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 [2022-07-19 18:12:51,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 1226 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:12:51,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4869 states. [2022-07-19 18:12:53,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4869 to 4867. [2022-07-19 18:12:53,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4867 states, 4866 states have (on average 1.3612823674475956) internal successors, (6624), 4866 states have internal predecessors, (6624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:12:54,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4867 states to 4867 states and 6624 transitions. [2022-07-19 18:12:54,008 INFO L78 Accepts]: Start accepts. Automaton has 4867 states and 6624 transitions. Word has length 73 [2022-07-19 18:12:54,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:12:54,008 INFO L495 AbstractCegarLoop]: Abstraction has 4867 states and 6624 transitions. [2022-07-19 18:12:54,008 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) [2022-07-19 18:12:54,009 INFO L276 IsEmpty]: Start isEmpty. Operand 4867 states and 6624 transitions. [2022-07-19 18:12:54,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-19 18:12:54,015 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:12:54,015 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] [2022-07-19 18:12:54,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-19 18:12:54,015 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:12:54,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:12:54,016 INFO L85 PathProgramCache]: Analyzing trace with hash -700390589, now seen corresponding path program 1 times [2022-07-19 18:12:54,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:12:54,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159685995] [2022-07-19 18:12:54,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:12:54,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:12:54,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:12:54,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:12:54,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:12:54,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159685995] [2022-07-19 18:12:54,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159685995] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:12:54,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:12:54,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:12:54,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935063570] [2022-07-19 18:12:54,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:12:54,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:12:54,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:12:54,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:12:54,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:12:54,061 INFO L87 Difference]: Start difference. First operand 4867 states and 6624 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 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) [2022-07-19 18:12:57,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:12:57,773 INFO L93 Difference]: Finished difference Result 9616 states and 13274 transitions. [2022-07-19 18:12:57,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:12:57,774 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 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 [2022-07-19 18:12:57,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:12:57,781 INFO L225 Difference]: With dead ends: 9616 [2022-07-19 18:12:57,781 INFO L226 Difference]: Without dead ends: 6868 [2022-07-19 18:12:57,784 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 [2022-07-19 18:12:57,784 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 403 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 18:12:57,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [403 Valid, 580 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 18:12:57,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6868 states. [2022-07-19 18:13:01,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6868 to 6848. [2022-07-19 18:13:01,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6848 states, 6847 states have (on average 1.383379582298817) internal successors, (9472), 6847 states have internal predecessors, (9472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:13:01,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6848 states to 6848 states and 9472 transitions. [2022-07-19 18:13:01,045 INFO L78 Accepts]: Start accepts. Automaton has 6848 states and 9472 transitions. Word has length 74 [2022-07-19 18:13:01,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:13:01,046 INFO L495 AbstractCegarLoop]: Abstraction has 6848 states and 9472 transitions. [2022-07-19 18:13:01,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 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) [2022-07-19 18:13:01,046 INFO L276 IsEmpty]: Start isEmpty. Operand 6848 states and 9472 transitions. [2022-07-19 18:13:01,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-19 18:13:01,051 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:13:01,051 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] [2022-07-19 18:13:01,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-19 18:13:01,051 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:13:01,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:13:01,051 INFO L85 PathProgramCache]: Analyzing trace with hash -976483284, now seen corresponding path program 1 times [2022-07-19 18:13:01,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:13:01,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704389482] [2022-07-19 18:13:01,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:13:01,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:13:01,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:13:01,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:13:01,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:13:01,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704389482] [2022-07-19 18:13:01,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704389482] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:13:01,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:13:01,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:13:01,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294802133] [2022-07-19 18:13:01,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:13:01,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:13:01,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:13:01,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:13:01,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:13:01,099 INFO L87 Difference]: Start difference. First operand 6848 states and 9472 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 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) [2022-07-19 18:13:06,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:13:06,255 INFO L93 Difference]: Finished difference Result 12654 states and 17647 transitions. [2022-07-19 18:13:06,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:13:06,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 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 [2022-07-19 18:13:06,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:13:06,265 INFO L225 Difference]: With dead ends: 12654 [2022-07-19 18:13:06,265 INFO L226 Difference]: Without dead ends: 8428 [2022-07-19 18:13:06,270 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 [2022-07-19 18:13:06,271 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 401 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:13:06,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 676 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:13:06,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8428 states. [2022-07-19 18:13:09,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8428 to 6260. [2022-07-19 18:13:09,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6260 states, 6259 states have (on average 1.3904777120945837) internal successors, (8703), 6259 states have internal predecessors, (8703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:13:09,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6260 states to 6260 states and 8703 transitions. [2022-07-19 18:13:09,338 INFO L78 Accepts]: Start accepts. Automaton has 6260 states and 8703 transitions. Word has length 74 [2022-07-19 18:13:09,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:13:09,338 INFO L495 AbstractCegarLoop]: Abstraction has 6260 states and 8703 transitions. [2022-07-19 18:13:09,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 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) [2022-07-19 18:13:09,339 INFO L276 IsEmpty]: Start isEmpty. Operand 6260 states and 8703 transitions. [2022-07-19 18:13:09,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-19 18:13:09,344 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:13:09,344 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:13:09,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-19 18:13:09,345 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:13:09,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:13:09,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1077680046, now seen corresponding path program 1 times [2022-07-19 18:13:09,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:13:09,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531046208] [2022-07-19 18:13:09,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:13:09,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:13:09,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:13:09,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:13:09,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:13:09,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531046208] [2022-07-19 18:13:09,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531046208] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:13:09,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:13:09,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 18:13:09,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771175408] [2022-07-19 18:13:09,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:13:09,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 18:13:09,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:13:09,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 18:13:09,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-19 18:13:09,448 INFO L87 Difference]: Start difference. First operand 6260 states and 8703 transitions. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:13:14,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:13:14,116 INFO L93 Difference]: Finished difference Result 9814 states and 13743 transitions. [2022-07-19 18:13:14,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 18:13:14,116 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-07-19 18:13:14,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:13:14,124 INFO L225 Difference]: With dead ends: 9814 [2022-07-19 18:13:14,124 INFO L226 Difference]: Without dead ends: 8122 [2022-07-19 18:13:14,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-07-19 18:13:14,127 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 2500 mSDsluCounter, 1056 mSDsCounter, 0 mSdLazyCounter, 987 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2500 SdHoareTripleChecker+Valid, 1410 SdHoareTripleChecker+Invalid, 1061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 18:13:14,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2500 Valid, 1410 Invalid, 1061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 987 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 18:13:14,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8122 states. [2022-07-19 18:13:18,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8122 to 6258. [2022-07-19 18:13:18,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6258 states, 6257 states have (on average 1.3902828831708487) internal successors, (8699), 6257 states have internal predecessors, (8699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:13:18,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6258 states to 6258 states and 8699 transitions. [2022-07-19 18:13:18,055 INFO L78 Accepts]: Start accepts. Automaton has 6258 states and 8699 transitions. Word has length 75 [2022-07-19 18:13:18,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:13:18,055 INFO L495 AbstractCegarLoop]: Abstraction has 6258 states and 8699 transitions. [2022-07-19 18:13:18,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:13:18,056 INFO L276 IsEmpty]: Start isEmpty. Operand 6258 states and 8699 transitions. [2022-07-19 18:13:18,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-19 18:13:18,061 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:13:18,061 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:13:18,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-19 18:13:18,062 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:13:18,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:13:18,062 INFO L85 PathProgramCache]: Analyzing trace with hash -594605292, now seen corresponding path program 1 times [2022-07-19 18:13:18,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:13:18,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375367261] [2022-07-19 18:13:18,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:13:18,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:13:18,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:13:18,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:13:18,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:13:18,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375367261] [2022-07-19 18:13:18,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375367261] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:13:18,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:13:18,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 18:13:18,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203550549] [2022-07-19 18:13:18,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:13:18,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 18:13:18,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:13:18,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 18:13:18,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-19 18:13:18,444 INFO L87 Difference]: Start difference. First operand 6258 states and 8699 transitions. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 11 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:13:45,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:13:45,885 INFO L93 Difference]: Finished difference Result 39802 states and 56118 transitions. [2022-07-19 18:13:45,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-07-19 18:13:45,886 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 11 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-07-19 18:13:45,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:13:45,945 INFO L225 Difference]: With dead ends: 39802 [2022-07-19 18:13:45,946 INFO L226 Difference]: Without dead ends: 38067 [2022-07-19 18:13:45,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=457, Invalid=1349, Unknown=0, NotChecked=0, Total=1806 [2022-07-19 18:13:45,959 INFO L413 NwaCegarLoop]: 543 mSDtfsCounter, 4666 mSDsluCounter, 2297 mSDsCounter, 0 mSdLazyCounter, 2050 mSolverCounterSat, 294 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4666 SdHoareTripleChecker+Valid, 2840 SdHoareTripleChecker+Invalid, 2344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 294 IncrementalHoareTripleChecker+Valid, 2050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-19 18:13:45,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4666 Valid, 2840 Invalid, 2344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [294 Valid, 2050 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-19 18:13:45,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38067 states. [2022-07-19 18:13:49,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38067 to 6274. [2022-07-19 18:13:49,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6274 states, 6273 states have (on average 1.3892874222859877) internal successors, (8715), 6273 states have internal predecessors, (8715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:13:49,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6274 states to 6274 states and 8715 transitions. [2022-07-19 18:13:49,763 INFO L78 Accepts]: Start accepts. Automaton has 6274 states and 8715 transitions. Word has length 75 [2022-07-19 18:13:49,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:13:49,763 INFO L495 AbstractCegarLoop]: Abstraction has 6274 states and 8715 transitions. [2022-07-19 18:13:49,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 11 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:13:49,763 INFO L276 IsEmpty]: Start isEmpty. Operand 6274 states and 8715 transitions. [2022-07-19 18:13:49,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-19 18:13:49,768 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:13:49,768 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:13:49,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-19 18:13:49,768 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:13:49,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:13:49,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1770316250, now seen corresponding path program 1 times [2022-07-19 18:13:49,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:13:49,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022415240] [2022-07-19 18:13:49,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:13:49,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:13:49,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:13:49,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:13:49,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:13:49,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022415240] [2022-07-19 18:13:49,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022415240] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:13:49,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:13:49,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 18:13:49,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679250076] [2022-07-19 18:13:49,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:13:49,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 18:13:49,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:13:49,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 18:13:49,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-19 18:13:49,860 INFO L87 Difference]: Start difference. First operand 6274 states and 8715 transitions. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:14:01,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:14:01,701 INFO L93 Difference]: Finished difference Result 16257 states and 22862 transitions. [2022-07-19 18:14:01,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 18:14:01,702 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-07-19 18:14:01,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:14:01,732 INFO L225 Difference]: With dead ends: 16257 [2022-07-19 18:14:01,733 INFO L226 Difference]: Without dead ends: 14522 [2022-07-19 18:14:01,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2022-07-19 18:14:01,747 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 2480 mSDsluCounter, 1222 mSDsCounter, 0 mSdLazyCounter, 1208 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2480 SdHoareTripleChecker+Valid, 1659 SdHoareTripleChecker+Invalid, 1273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 18:14:01,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2480 Valid, 1659 Invalid, 1273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1208 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 18:14:01,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14522 states. [2022-07-19 18:14:06,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14522 to 6235. [2022-07-19 18:14:06,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6235 states, 6234 states have (on average 1.3905999358357395) internal successors, (8669), 6234 states have internal predecessors, (8669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:14:06,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6235 states to 6235 states and 8669 transitions. [2022-07-19 18:14:06,384 INFO L78 Accepts]: Start accepts. Automaton has 6235 states and 8669 transitions. Word has length 76 [2022-07-19 18:14:06,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:14:06,384 INFO L495 AbstractCegarLoop]: Abstraction has 6235 states and 8669 transitions. [2022-07-19 18:14:06,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:14:06,385 INFO L276 IsEmpty]: Start isEmpty. Operand 6235 states and 8669 transitions. [2022-07-19 18:14:06,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-19 18:14:06,403 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:14:06,404 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:14:06,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-19 18:14:06,404 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:14:06,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:14:06,405 INFO L85 PathProgramCache]: Analyzing trace with hash -2139551739, now seen corresponding path program 1 times [2022-07-19 18:14:06,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:14:06,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883173208] [2022-07-19 18:14:06,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:14:06,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:14:06,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:14:06,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:14:06,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:14:06,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883173208] [2022-07-19 18:14:06,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883173208] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:14:06,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:14:06,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:14:06,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203496151] [2022-07-19 18:14:06,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:14:06,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:14:06,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:14:06,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:14:06,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:14:06,468 INFO L87 Difference]: Start difference. First operand 6235 states and 8669 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:14:11,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:14:11,256 INFO L93 Difference]: Finished difference Result 9551 states and 13363 transitions. [2022-07-19 18:14:11,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:14:11,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-07-19 18:14:11,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:14:11,270 INFO L225 Difference]: With dead ends: 9551 [2022-07-19 18:14:11,271 INFO L226 Difference]: Without dead ends: 6237 [2022-07-19 18:14:11,279 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 [2022-07-19 18:14:11,280 INFO L413 NwaCegarLoop]: 580 mSDtfsCounter, 245 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 940 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 18:14:11,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 940 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 18:14:11,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6237 states. [2022-07-19 18:14:15,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6237 to 6235. [2022-07-19 18:14:15,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6235 states, 6234 states have (on average 1.3763233878729548) internal successors, (8580), 6234 states have internal predecessors, (8580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:14:15,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6235 states to 6235 states and 8580 transitions. [2022-07-19 18:14:15,872 INFO L78 Accepts]: Start accepts. Automaton has 6235 states and 8580 transitions. Word has length 76 [2022-07-19 18:14:15,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:14:15,873 INFO L495 AbstractCegarLoop]: Abstraction has 6235 states and 8580 transitions. [2022-07-19 18:14:15,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:14:15,873 INFO L276 IsEmpty]: Start isEmpty. Operand 6235 states and 8580 transitions. [2022-07-19 18:14:15,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-19 18:14:15,879 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:14:15,879 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:14:15,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-19 18:14:15,879 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:14:15,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:14:15,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1274480763, now seen corresponding path program 1 times [2022-07-19 18:14:15,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:14:15,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769091703] [2022-07-19 18:14:15,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:14:15,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:14:15,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:14:16,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:14:16,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:14:16,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769091703] [2022-07-19 18:14:16,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769091703] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:14:16,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:14:16,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:14:16,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508111731] [2022-07-19 18:14:16,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:14:16,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:14:16,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:14:16,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:14:16,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:14:16,009 INFO L87 Difference]: Start difference. First operand 6235 states and 8580 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:14:19,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:14:19,966 INFO L93 Difference]: Finished difference Result 8302 states and 11451 transitions. [2022-07-19 18:14:19,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:14:19,966 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-07-19 18:14:19,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:14:19,973 INFO L225 Difference]: With dead ends: 8302 [2022-07-19 18:14:19,973 INFO L226 Difference]: Without dead ends: 5264 [2022-07-19 18:14:19,977 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 [2022-07-19 18:14:19,977 INFO L413 NwaCegarLoop]: 599 mSDtfsCounter, 272 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:14:19,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 901 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:14:19,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5264 states. [2022-07-19 18:14:22,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5264 to 4178. [2022-07-19 18:14:23,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4178 states, 4177 states have (on average 1.3418721570505148) internal successors, (5605), 4177 states have internal predecessors, (5605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:14:23,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4178 states to 4178 states and 5605 transitions. [2022-07-19 18:14:23,012 INFO L78 Accepts]: Start accepts. Automaton has 4178 states and 5605 transitions. Word has length 76 [2022-07-19 18:14:23,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:14:23,013 INFO L495 AbstractCegarLoop]: Abstraction has 4178 states and 5605 transitions. [2022-07-19 18:14:23,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:14:23,013 INFO L276 IsEmpty]: Start isEmpty. Operand 4178 states and 5605 transitions. [2022-07-19 18:14:23,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-19 18:14:23,019 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:14:23,019 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:14:23,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-19 18:14:23,020 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:14:23,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:14:23,022 INFO L85 PathProgramCache]: Analyzing trace with hash 895278353, now seen corresponding path program 1 times [2022-07-19 18:14:23,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:14:23,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259866087] [2022-07-19 18:14:23,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:14:23,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:14:23,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:14:23,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:14:23,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:14:23,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259866087] [2022-07-19 18:14:23,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259866087] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:14:23,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:14:23,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:14:23,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243742796] [2022-07-19 18:14:23,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:14:23,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:14:23,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:14:23,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:14:23,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:14:23,122 INFO L87 Difference]: Start difference. First operand 4178 states and 5605 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:14:26,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:14:26,950 INFO L93 Difference]: Finished difference Result 7498 states and 10156 transitions. [2022-07-19 18:14:26,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:14:26,951 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-07-19 18:14:26,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:14:26,958 INFO L225 Difference]: With dead ends: 7498 [2022-07-19 18:14:26,958 INFO L226 Difference]: Without dead ends: 5023 [2022-07-19 18:14:26,961 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 [2022-07-19 18:14:26,961 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 355 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 18:14:26,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 514 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 18:14:26,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5023 states. [2022-07-19 18:14:29,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5023 to 3917. [2022-07-19 18:14:29,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3917 states, 3916 states have (on average 1.3465270684371808) internal successors, (5273), 3916 states have internal predecessors, (5273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:14:29,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3917 states to 3917 states and 5273 transitions. [2022-07-19 18:14:29,719 INFO L78 Accepts]: Start accepts. Automaton has 3917 states and 5273 transitions. Word has length 77 [2022-07-19 18:14:29,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:14:29,719 INFO L495 AbstractCegarLoop]: Abstraction has 3917 states and 5273 transitions. [2022-07-19 18:14:29,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:14:29,720 INFO L276 IsEmpty]: Start isEmpty. Operand 3917 states and 5273 transitions. [2022-07-19 18:14:29,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-19 18:14:29,723 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:14:29,724 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:14:29,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-19 18:14:29,724 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:14:29,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:14:29,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1668712, now seen corresponding path program 1 times [2022-07-19 18:14:29,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:14:29,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220337019] [2022-07-19 18:14:29,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:14:29,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:14:29,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:14:30,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:14:30,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:14:30,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220337019] [2022-07-19 18:14:30,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220337019] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:14:30,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:14:30,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-19 18:14:30,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047227829] [2022-07-19 18:14:30,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:14:30,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-19 18:14:30,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:14:30,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-19 18:14:30,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-19 18:14:30,703 INFO L87 Difference]: Start difference. First operand 3917 states and 5273 transitions. Second operand has 13 states, 13 states have (on average 6.0) internal successors, (78), 13 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:14:42,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:14:42,045 INFO L93 Difference]: Finished difference Result 12026 states and 16445 transitions. [2022-07-19 18:14:42,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-19 18:14:42,045 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.0) internal successors, (78), 13 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2022-07-19 18:14:42,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:14:42,067 INFO L225 Difference]: With dead ends: 12026 [2022-07-19 18:14:42,068 INFO L226 Difference]: Without dead ends: 11873 [2022-07-19 18:14:42,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=253, Invalid=677, Unknown=0, NotChecked=0, Total=930 [2022-07-19 18:14:42,074 INFO L413 NwaCegarLoop]: 580 mSDtfsCounter, 4128 mSDsluCounter, 3581 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4128 SdHoareTripleChecker+Valid, 4161 SdHoareTripleChecker+Invalid, 916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 18:14:42,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4128 Valid, 4161 Invalid, 916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 856 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 18:14:42,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11873 states. [2022-07-19 18:14:44,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11873 to 3884. [2022-07-19 18:14:44,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3884 states, 3883 states have (on average 1.3471542621684265) internal successors, (5231), 3883 states have internal predecessors, (5231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:14:44,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3884 states to 3884 states and 5231 transitions. [2022-07-19 18:14:44,923 INFO L78 Accepts]: Start accepts. Automaton has 3884 states and 5231 transitions. Word has length 78 [2022-07-19 18:14:44,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:14:44,923 INFO L495 AbstractCegarLoop]: Abstraction has 3884 states and 5231 transitions. [2022-07-19 18:14:44,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.0) internal successors, (78), 13 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:14:44,923 INFO L276 IsEmpty]: Start isEmpty. Operand 3884 states and 5231 transitions. [2022-07-19 18:14:44,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-07-19 18:14:44,928 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:14:44,928 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:14:44,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-19 18:14:44,929 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:14:44,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:14:44,929 INFO L85 PathProgramCache]: Analyzing trace with hash -961989651, now seen corresponding path program 1 times [2022-07-19 18:14:44,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:14:44,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256695351] [2022-07-19 18:14:44,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:14:44,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:14:44,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:14:45,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:14:45,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:14:45,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256695351] [2022-07-19 18:14:45,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256695351] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:14:45,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:14:45,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 18:14:45,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523750705] [2022-07-19 18:14:45,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:14:45,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 18:14:45,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:14:45,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 18:14:45,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 18:14:45,052 INFO L87 Difference]: Start difference. First operand 3884 states and 5231 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:14:53,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:14:53,320 INFO L93 Difference]: Finished difference Result 12444 states and 17323 transitions. [2022-07-19 18:14:53,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 18:14:53,321 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2022-07-19 18:14:53,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:14:53,336 INFO L225 Difference]: With dead ends: 12444 [2022-07-19 18:14:53,336 INFO L226 Difference]: Without dead ends: 9634 [2022-07-19 18:14:53,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-19 18:14:53,343 INFO L413 NwaCegarLoop]: 371 mSDtfsCounter, 1745 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1745 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 18:14:53,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1745 Valid, 1184 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 18:14:53,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9634 states. [2022-07-19 18:14:58,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9634 to 6692. [2022-07-19 18:14:58,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6692 states, 6691 states have (on average 1.3588402331490061) internal successors, (9092), 6691 states have internal predecessors, (9092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:14:58,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6692 states to 6692 states and 9092 transitions. [2022-07-19 18:14:58,952 INFO L78 Accepts]: Start accepts. Automaton has 6692 states and 9092 transitions. Word has length 82 [2022-07-19 18:14:58,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:14:58,953 INFO L495 AbstractCegarLoop]: Abstraction has 6692 states and 9092 transitions. [2022-07-19 18:14:58,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:14:58,954 INFO L276 IsEmpty]: Start isEmpty. Operand 6692 states and 9092 transitions. [2022-07-19 18:14:58,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-19 18:14:58,961 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:14:58,961 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:14:58,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-19 18:14:58,962 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:14:58,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:14:58,962 INFO L85 PathProgramCache]: Analyzing trace with hash -445916950, now seen corresponding path program 1 times [2022-07-19 18:14:58,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:14:58,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126034833] [2022-07-19 18:14:58,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:14:58,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:14:59,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:14:59,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:14:59,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:14:59,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126034833] [2022-07-19 18:14:59,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126034833] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:14:59,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:14:59,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 18:14:59,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890331692] [2022-07-19 18:14:59,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:14:59,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 18:14:59,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:14:59,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 18:14:59,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-19 18:14:59,152 INFO L87 Difference]: Start difference. First operand 6692 states and 9092 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)