./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem13_label33.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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/eca-rers2012/Problem13_label33.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 aaccf385f935203878b819a92144fc9de308865fc678d0507ba69ad2b46a0a7a --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 12:55:20,059 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 12:55:20,072 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 12:55:20,094 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 12:55:20,100 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 12:55:20,101 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 12:55:20,108 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 12:55:20,110 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 12:55:20,115 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 12:55:20,116 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 12:55:20,117 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 12:55:20,118 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 12:55:20,119 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 12:55:20,123 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 12:55:20,125 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 12:55:20,127 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 12:55:20,128 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 12:55:20,130 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 12:55:20,133 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 12:55:20,136 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 12:55:20,138 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 12:55:20,139 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 12:55:20,139 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 12:55:20,140 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 12:55:20,141 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 12:55:20,144 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 12:55:20,144 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 12:55:20,145 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 12:55:20,145 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 12:55:20,146 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 12:55:20,147 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 12:55:20,147 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 12:55:20,148 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 12:55:20,148 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 12:55:20,149 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 12:55:20,150 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 12:55:20,150 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 12:55:20,150 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 12:55:20,150 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 12:55:20,150 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 12:55:20,151 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 12:55:20,152 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 12:55:20,153 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 12:55:20,177 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 12:55:20,177 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 12:55:20,177 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 12:55:20,178 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 12:55:20,178 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 12:55:20,178 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 12:55:20,179 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 12:55:20,179 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 12:55:20,179 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 12:55:20,180 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 12:55:20,180 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 12:55:20,180 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 12:55:20,180 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 12:55:20,181 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 12:55:20,181 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 12:55:20,181 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 12:55:20,181 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 12:55:20,181 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 12:55:20,181 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 12:55:20,181 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 12:55:20,183 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 12:55:20,183 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 12:55:20,183 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 12:55:20,183 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 12:55:20,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 12:55:20,183 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 12:55:20,184 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 12:55:20,184 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 12:55:20,184 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 12:55:20,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 12:55:20,184 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 12:55:20,184 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 12:55:20,185 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 12:55:20,185 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aaccf385f935203878b819a92144fc9de308865fc678d0507ba69ad2b46a0a7a [2022-07-13 12:55:20,382 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 12:55:20,403 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 12:55:20,405 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 12:55:20,406 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 12:55:20,406 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 12:55:20,407 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem13_label33.c [2022-07-13 12:55:20,454 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfd0838d8/18f53662d52449f2aec5241de716d34c/FLAG5ee66364a [2022-07-13 12:55:21,041 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 12:55:21,042 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label33.c [2022-07-13 12:55:21,075 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfd0838d8/18f53662d52449f2aec5241de716d34c/FLAG5ee66364a [2022-07-13 12:55:21,479 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfd0838d8/18f53662d52449f2aec5241de716d34c [2022-07-13 12:55:21,481 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 12:55:21,482 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 12:55:21,483 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 12:55:21,483 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 12:55:21,485 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 12:55:21,486 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 12:55:21" (1/1) ... [2022-07-13 12:55:21,486 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38e21bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:55:21, skipping insertion in model container [2022-07-13 12:55:21,487 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 12:55:21" (1/1) ... [2022-07-13 12:55:21,491 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 12:55:21,586 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 12:55:21,844 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/eca-rers2012/Problem13_label33.c[5177,5190] [2022-07-13 12:55:22,422 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 12:55:22,428 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 12:55:22,450 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/eca-rers2012/Problem13_label33.c[5177,5190] [2022-07-13 12:55:22,875 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 12:55:22,892 INFO L208 MainTranslator]: Completed translation [2022-07-13 12:55:22,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:55:22 WrapperNode [2022-07-13 12:55:22,893 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 12:55:22,894 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 12:55:22,894 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 12:55:22,894 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 12:55:22,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:55:22" (1/1) ... [2022-07-13 12:55:22,941 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:55:22" (1/1) ... [2022-07-13 12:55:23,344 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5583 [2022-07-13 12:55:23,344 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 12:55:23,345 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 12:55:23,346 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 12:55:23,346 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 12:55:23,352 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:55:22" (1/1) ... [2022-07-13 12:55:23,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:55:22" (1/1) ... [2022-07-13 12:55:23,490 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:55:22" (1/1) ... [2022-07-13 12:55:23,490 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:55:22" (1/1) ... [2022-07-13 12:55:23,759 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:55:22" (1/1) ... [2022-07-13 12:55:23,794 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:55:22" (1/1) ... [2022-07-13 12:55:23,842 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:55:22" (1/1) ... [2022-07-13 12:55:23,916 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 12:55:23,925 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 12:55:23,926 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 12:55:23,926 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 12:55:23,927 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:55:22" (1/1) ... [2022-07-13 12:55:23,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 12:55:23,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 12:55:23,993 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) [2022-07-13 12:55:24,009 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 [2022-07-13 12:55:24,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 12:55:24,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 12:55:24,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 12:55:24,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 12:55:24,107 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 12:55:24,108 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 12:55:27,382 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 12:55:27,393 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 12:55:27,393 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 12:55:27,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 12:55:27 BoogieIcfgContainer [2022-07-13 12:55:27,397 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 12:55:27,398 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 12:55:27,398 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 12:55:27,401 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 12:55:27,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 12:55:21" (1/3) ... [2022-07-13 12:55:27,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5db656f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 12:55:27, skipping insertion in model container [2022-07-13 12:55:27,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:55:22" (2/3) ... [2022-07-13 12:55:27,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5db656f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 12:55:27, skipping insertion in model container [2022-07-13 12:55:27,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 12:55:27" (3/3) ... [2022-07-13 12:55:27,403 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label33.c [2022-07-13 12:55:27,413 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 12:55:27,414 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 12:55:27,460 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 12:55:27,465 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@85400bb, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@63cea480 [2022-07-13 12:55:27,465 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 12:55:27,471 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:55:27,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-13 12:55:27,477 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:55:27,477 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] [2022-07-13 12:55:27,478 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:55:27,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:55:27,481 INFO L85 PathProgramCache]: Analyzing trace with hash -596708735, now seen corresponding path program 1 times [2022-07-13 12:55:27,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:55:27,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010920158] [2022-07-13 12:55:27,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:55:27,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:55:27,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:55:27,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 12:55:27,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:55:27,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010920158] [2022-07-13 12:55:27,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010920158] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:55:27,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:55:27,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 12:55:27,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638806318] [2022-07-13 12:55:27,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:55:27,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:55:27,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:55:27,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:55:27,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:55:27,668 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 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 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:55:31,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:55:31,277 INFO L93 Difference]: Finished difference Result 3082 states and 5689 transitions. [2022-07-13 12:55:31,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:55:31,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2022-07-13 12:55:31,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:55:31,299 INFO L225 Difference]: With dead ends: 3082 [2022-07-13 12:55:31,301 INFO L226 Difference]: Without dead ends: 1899 [2022-07-13 12:55:31,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:55:31,308 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 1004 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 2955 mSolverCounterSat, 599 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1004 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 3554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 599 IncrementalHoareTripleChecker+Valid, 2955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-13 12:55:31,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1004 Valid, 641 Invalid, 3554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [599 Valid, 2955 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-07-13 12:55:31,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2022-07-13 12:55:31,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1894. [2022-07-13 12:55:31,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1894 states, 1893 states have (on average 1.7374537770734284) internal successors, (3289), 1893 states have internal predecessors, (3289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:55:31,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1894 states to 1894 states and 3289 transitions. [2022-07-13 12:55:31,396 INFO L78 Accepts]: Start accepts. Automaton has 1894 states and 3289 transitions. Word has length 35 [2022-07-13 12:55:31,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:55:31,397 INFO L495 AbstractCegarLoop]: Abstraction has 1894 states and 3289 transitions. [2022-07-13 12:55:31,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:55:31,397 INFO L276 IsEmpty]: Start isEmpty. Operand 1894 states and 3289 transitions. [2022-07-13 12:55:31,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-13 12:55:31,399 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:55:31,399 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:55:31,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 12:55:31,400 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:55:31,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:55:31,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1328340326, now seen corresponding path program 1 times [2022-07-13 12:55:31,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:55:31,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876257731] [2022-07-13 12:55:31,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:55:31,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:55:31,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:55:31,485 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 12:55:31,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:55:31,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876257731] [2022-07-13 12:55:31,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876257731] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:55:31,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:55:31,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 12:55:31,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885390171] [2022-07-13 12:55:31,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:55:31,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:55:31,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:55:31,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:55:31,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:55:31,488 INFO L87 Difference]: Start difference. First operand 1894 states and 3289 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:55:34,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:55:34,402 INFO L93 Difference]: Finished difference Result 5384 states and 9441 transitions. [2022-07-13 12:55:34,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:55:34,403 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2022-07-13 12:55:34,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:55:34,413 INFO L225 Difference]: With dead ends: 5384 [2022-07-13 12:55:34,414 INFO L226 Difference]: Without dead ends: 3492 [2022-07-13 12:55:34,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:55:34,420 INFO L413 NwaCegarLoop]: 860 mSDtfsCounter, 922 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 879 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 3189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 879 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-13 12:55:34,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 1013 Invalid, 3189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [879 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-13 12:55:34,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3492 states. [2022-07-13 12:55:34,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3492 to 3491. [2022-07-13 12:55:34,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3491 states, 3490 states have (on average 1.5383954154727795) internal successors, (5369), 3490 states have internal predecessors, (5369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:55:34,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3491 states to 3491 states and 5369 transitions. [2022-07-13 12:55:34,476 INFO L78 Accepts]: Start accepts. Automaton has 3491 states and 5369 transitions. Word has length 100 [2022-07-13 12:55:34,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:55:34,477 INFO L495 AbstractCegarLoop]: Abstraction has 3491 states and 5369 transitions. [2022-07-13 12:55:34,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:55:34,478 INFO L276 IsEmpty]: Start isEmpty. Operand 3491 states and 5369 transitions. [2022-07-13 12:55:34,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-13 12:55:34,484 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:55:34,485 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:55:34,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 12:55:34,486 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:55:34,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:55:34,487 INFO L85 PathProgramCache]: Analyzing trace with hash 497243647, now seen corresponding path program 1 times [2022-07-13 12:55:34,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:55:34,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216976185] [2022-07-13 12:55:34,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:55:34,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:55:34,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:55:34,608 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 12:55:34,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:55:34,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216976185] [2022-07-13 12:55:34,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216976185] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:55:34,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:55:34,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 12:55:34,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629477940] [2022-07-13 12:55:34,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:55:34,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:55:34,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:55:34,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:55:34,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:55:34,611 INFO L87 Difference]: Start difference. First operand 3491 states and 5369 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:55:37,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:55:37,395 INFO L93 Difference]: Finished difference Result 10169 states and 15700 transitions. [2022-07-13 12:55:37,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:55:37,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2022-07-13 12:55:37,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:55:37,419 INFO L225 Difference]: With dead ends: 10169 [2022-07-13 12:55:37,419 INFO L226 Difference]: Without dead ends: 6680 [2022-07-13 12:55:37,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:55:37,425 INFO L413 NwaCegarLoop]: 714 mSDtfsCounter, 977 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2533 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 3308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 2533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-13 12:55:37,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [977 Valid, 847 Invalid, 3308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 2533 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-13 12:55:37,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6680 states. [2022-07-13 12:55:37,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6680 to 6669. [2022-07-13 12:55:37,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6669 states, 6668 states have (on average 1.375224955008998) internal successors, (9170), 6668 states have internal predecessors, (9170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:55:37,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6669 states to 6669 states and 9170 transitions. [2022-07-13 12:55:37,520 INFO L78 Accepts]: Start accepts. Automaton has 6669 states and 9170 transitions. Word has length 102 [2022-07-13 12:55:37,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:55:37,520 INFO L495 AbstractCegarLoop]: Abstraction has 6669 states and 9170 transitions. [2022-07-13 12:55:37,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:55:37,521 INFO L276 IsEmpty]: Start isEmpty. Operand 6669 states and 9170 transitions. [2022-07-13 12:55:37,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-13 12:55:37,526 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:55:37,526 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:55:37,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 12:55:37,527 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:55:37,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:55:37,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1488021875, now seen corresponding path program 1 times [2022-07-13 12:55:37,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:55:37,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100285402] [2022-07-13 12:55:37,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:55:37,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:55:37,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:55:37,654 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 12:55:37,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:55:37,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100285402] [2022-07-13 12:55:37,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100285402] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:55:37,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:55:37,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 12:55:37,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873950387] [2022-07-13 12:55:37,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:55:37,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:55:37,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:55:37,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:55:37,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:55:37,657 INFO L87 Difference]: Start difference. First operand 6669 states and 9170 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:55:40,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:55:40,114 INFO L93 Difference]: Finished difference Result 14123 states and 19185 transitions. [2022-07-13 12:55:40,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:55:40,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 0 states have call successors, (0), 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 146 [2022-07-13 12:55:40,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:55:40,135 INFO L225 Difference]: With dead ends: 14123 [2022-07-13 12:55:40,135 INFO L226 Difference]: Without dead ends: 7456 [2022-07-13 12:55:40,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:55:40,149 INFO L413 NwaCegarLoop]: 1086 mSDtfsCounter, 678 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2523 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 2577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 2523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-13 12:55:40,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 1215 Invalid, 2577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 2523 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-13 12:55:40,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7456 states. [2022-07-13 12:55:40,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7456 to 7456. [2022-07-13 12:55:40,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7456 states, 7455 states have (on average 1.3362843729040912) internal successors, (9962), 7455 states have internal predecessors, (9962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:55:40,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7456 states to 7456 states and 9962 transitions. [2022-07-13 12:55:40,246 INFO L78 Accepts]: Start accepts. Automaton has 7456 states and 9962 transitions. Word has length 146 [2022-07-13 12:55:40,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:55:40,246 INFO L495 AbstractCegarLoop]: Abstraction has 7456 states and 9962 transitions. [2022-07-13 12:55:40,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:55:40,247 INFO L276 IsEmpty]: Start isEmpty. Operand 7456 states and 9962 transitions. [2022-07-13 12:55:40,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-13 12:55:40,248 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:55:40,248 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:55:40,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 12:55:40,249 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:55:40,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:55:40,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1668473655, now seen corresponding path program 1 times [2022-07-13 12:55:40,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:55:40,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384332054] [2022-07-13 12:55:40,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:55:40,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:55:40,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:55:40,350 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-13 12:55:40,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:55:40,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384332054] [2022-07-13 12:55:40,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384332054] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:55:40,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:55:40,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 12:55:40,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490003209] [2022-07-13 12:55:40,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:55:40,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:55:40,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:55:40,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:55:40,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:55:40,353 INFO L87 Difference]: Start difference. First operand 7456 states and 9962 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:55:43,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:55:43,168 INFO L93 Difference]: Finished difference Result 19656 states and 26991 transitions. [2022-07-13 12:55:43,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:55:43,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 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 160 [2022-07-13 12:55:43,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:55:43,256 INFO L225 Difference]: With dead ends: 19656 [2022-07-13 12:55:43,256 INFO L226 Difference]: Without dead ends: 12989 [2022-07-13 12:55:43,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:55:43,261 INFO L413 NwaCegarLoop]: 1071 mSDtfsCounter, 737 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2526 mSolverCounterSat, 779 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 3305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 779 IncrementalHoareTripleChecker+Valid, 2526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-13 12:55:43,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [737 Valid, 1222 Invalid, 3305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [779 Valid, 2526 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-13 12:55:43,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12989 states. [2022-07-13 12:55:43,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12989 to 12972. [2022-07-13 12:55:43,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12972 states, 12971 states have (on average 1.235910878112713) internal successors, (16031), 12971 states have internal predecessors, (16031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:55:43,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12972 states to 12972 states and 16031 transitions. [2022-07-13 12:55:43,413 INFO L78 Accepts]: Start accepts. Automaton has 12972 states and 16031 transitions. Word has length 160 [2022-07-13 12:55:43,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:55:43,414 INFO L495 AbstractCegarLoop]: Abstraction has 12972 states and 16031 transitions. [2022-07-13 12:55:43,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:55:43,417 INFO L276 IsEmpty]: Start isEmpty. Operand 12972 states and 16031 transitions. [2022-07-13 12:55:43,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2022-07-13 12:55:43,419 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:55:43,420 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:55:43,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 12:55:43,420 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:55:43,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:55:43,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1749118278, now seen corresponding path program 1 times [2022-07-13 12:55:43,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:55:43,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952317557] [2022-07-13 12:55:43,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:55:43,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:55:43,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:55:43,559 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-07-13 12:55:43,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:55:43,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952317557] [2022-07-13 12:55:43,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952317557] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:55:43,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:55:43,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 12:55:43,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772622897] [2022-07-13 12:55:43,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:55:43,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:55:43,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:55:43,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:55:43,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:55:43,562 INFO L87 Difference]: Start difference. First operand 12972 states and 16031 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:55:46,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:55:46,147 INFO L93 Difference]: Finished difference Result 22792 states and 28651 transitions. [2022-07-13 12:55:46,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:55:46,147 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 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 247 [2022-07-13 12:55:46,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:55:46,171 INFO L225 Difference]: With dead ends: 22792 [2022-07-13 12:55:46,171 INFO L226 Difference]: Without dead ends: 12980 [2022-07-13 12:55:46,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:55:46,182 INFO L413 NwaCegarLoop]: 1027 mSDtfsCounter, 728 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 2714 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 2718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-13 12:55:46,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1211 Invalid, 2718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2714 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-13 12:55:46,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12980 states. [2022-07-13 12:55:46,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12980 to 12972. [2022-07-13 12:55:46,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12972 states, 12971 states have (on average 1.2347544522396114) internal successors, (16016), 12971 states have internal predecessors, (16016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:55:46,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12972 states to 12972 states and 16016 transitions. [2022-07-13 12:55:46,318 INFO L78 Accepts]: Start accepts. Automaton has 12972 states and 16016 transitions. Word has length 247 [2022-07-13 12:55:46,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:55:46,319 INFO L495 AbstractCegarLoop]: Abstraction has 12972 states and 16016 transitions. [2022-07-13 12:55:46,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:55:46,319 INFO L276 IsEmpty]: Start isEmpty. Operand 12972 states and 16016 transitions. [2022-07-13 12:55:46,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-07-13 12:55:46,321 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:55:46,321 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:55:46,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 12:55:46,322 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:55:46,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:55:46,322 INFO L85 PathProgramCache]: Analyzing trace with hash 265245920, now seen corresponding path program 1 times [2022-07-13 12:55:46,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:55:46,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609262823] [2022-07-13 12:55:46,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:55:46,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:55:46,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:55:46,407 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 12:55:46,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:55:46,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609262823] [2022-07-13 12:55:46,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609262823] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:55:46,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:55:46,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:55:46,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058956772] [2022-07-13 12:55:46,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:55:46,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:55:46,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:55:46,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:55:46,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:55:46,409 INFO L87 Difference]: Start difference. First operand 12972 states and 16016 transitions. Second operand has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:55:49,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:55:49,497 INFO L93 Difference]: Finished difference Result 36166 states and 45134 transitions. [2022-07-13 12:55:49,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:55:49,498 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 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 249 [2022-07-13 12:55:49,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:55:49,535 INFO L225 Difference]: With dead ends: 36166 [2022-07-13 12:55:49,535 INFO L226 Difference]: Without dead ends: 23196 [2022-07-13 12:55:49,551 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 [2022-07-13 12:55:49,552 INFO L413 NwaCegarLoop]: 1851 mSDtfsCounter, 841 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 2479 mSolverCounterSat, 807 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 1989 SdHoareTripleChecker+Invalid, 3286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 807 IncrementalHoareTripleChecker+Valid, 2479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-13 12:55:49,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 1989 Invalid, 3286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [807 Valid, 2479 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-13 12:55:49,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23196 states. [2022-07-13 12:55:49,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23196 to 22404. [2022-07-13 12:55:49,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22404 states, 22403 states have (on average 1.1931884122662144) internal successors, (26731), 22403 states have internal predecessors, (26731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:55:49,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22404 states to 22404 states and 26731 transitions. [2022-07-13 12:55:49,803 INFO L78 Accepts]: Start accepts. Automaton has 22404 states and 26731 transitions. Word has length 249 [2022-07-13 12:55:49,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:55:49,803 INFO L495 AbstractCegarLoop]: Abstraction has 22404 states and 26731 transitions. [2022-07-13 12:55:49,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:55:49,803 INFO L276 IsEmpty]: Start isEmpty. Operand 22404 states and 26731 transitions. [2022-07-13 12:55:49,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2022-07-13 12:55:49,806 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:55:49,806 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:55:49,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 12:55:49,807 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:55:49,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:55:49,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1770450640, now seen corresponding path program 1 times [2022-07-13 12:55:49,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:55:49,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701666677] [2022-07-13 12:55:49,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:55:49,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:55:49,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:55:49,877 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 270 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-13 12:55:49,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:55:49,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701666677] [2022-07-13 12:55:49,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701666677] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:55:49,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:55:49,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:55:49,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348386412] [2022-07-13 12:55:49,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:55:49,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:55:49,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:55:49,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:55:49,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:55:49,880 INFO L87 Difference]: Start difference. First operand 22404 states and 26731 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:55:52,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:55:52,746 INFO L93 Difference]: Finished difference Result 55046 states and 66948 transitions. [2022-07-13 12:55:52,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:55:52,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 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 271 [2022-07-13 12:55:52,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:55:52,787 INFO L225 Difference]: With dead ends: 55046 [2022-07-13 12:55:52,788 INFO L226 Difference]: Without dead ends: 33431 [2022-07-13 12:55:52,798 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 [2022-07-13 12:55:52,799 INFO L413 NwaCegarLoop]: 810 mSDtfsCounter, 882 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 2384 mSolverCounterSat, 903 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 3287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 903 IncrementalHoareTripleChecker+Valid, 2384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-13 12:55:52,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 928 Invalid, 3287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [903 Valid, 2384 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-13 12:55:52,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33431 states. [2022-07-13 12:55:53,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33431 to 32635. [2022-07-13 12:55:53,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32635 states, 32634 states have (on average 1.176135318992462) internal successors, (38382), 32634 states have internal predecessors, (38382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:55:53,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32635 states to 32635 states and 38382 transitions. [2022-07-13 12:55:53,095 INFO L78 Accepts]: Start accepts. Automaton has 32635 states and 38382 transitions. Word has length 271 [2022-07-13 12:55:53,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:55:53,096 INFO L495 AbstractCegarLoop]: Abstraction has 32635 states and 38382 transitions. [2022-07-13 12:55:53,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:55:53,096 INFO L276 IsEmpty]: Start isEmpty. Operand 32635 states and 38382 transitions. [2022-07-13 12:55:53,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2022-07-13 12:55:53,100 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:55:53,100 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:55:53,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 12:55:53,101 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:55:53,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:55:53,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1030407125, now seen corresponding path program 1 times [2022-07-13 12:55:53,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:55:53,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685241577] [2022-07-13 12:55:53,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:55:53,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:55:53,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:55:53,187 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-07-13 12:55:53,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:55:53,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685241577] [2022-07-13 12:55:53,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685241577] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:55:53,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:55:53,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:55:53,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904994796] [2022-07-13 12:55:53,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:55:53,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:55:53,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:55:53,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:55:53,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:55:53,189 INFO L87 Difference]: Start difference. First operand 32635 states and 38382 transitions. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:55:56,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:55:56,183 INFO L93 Difference]: Finished difference Result 76294 states and 91193 transitions. [2022-07-13 12:55:56,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:55:56,184 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 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 326 [2022-07-13 12:55:56,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:55:56,232 INFO L225 Difference]: With dead ends: 76294 [2022-07-13 12:55:56,233 INFO L226 Difference]: Without dead ends: 44448 [2022-07-13 12:55:56,259 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 [2022-07-13 12:55:56,260 INFO L413 NwaCegarLoop]: 1806 mSDtfsCounter, 829 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 2550 mSolverCounterSat, 723 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 1950 SdHoareTripleChecker+Invalid, 3273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 723 IncrementalHoareTripleChecker+Valid, 2550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-13 12:55:56,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 1950 Invalid, 3273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [723 Valid, 2550 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-13 12:55:56,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44448 states. [2022-07-13 12:55:56,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44448 to 43657. [2022-07-13 12:55:56,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43657 states, 43656 states have (on average 1.151663001649258) internal successors, (50277), 43656 states have internal predecessors, (50277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:55:56,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43657 states to 43657 states and 50277 transitions. [2022-07-13 12:55:56,750 INFO L78 Accepts]: Start accepts. Automaton has 43657 states and 50277 transitions. Word has length 326 [2022-07-13 12:55:56,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:55:56,750 INFO L495 AbstractCegarLoop]: Abstraction has 43657 states and 50277 transitions. [2022-07-13 12:55:56,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:55:56,751 INFO L276 IsEmpty]: Start isEmpty. Operand 43657 states and 50277 transitions. [2022-07-13 12:55:56,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2022-07-13 12:55:56,755 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:55:56,755 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:55:56,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 12:55:56,756 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:55:56,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:55:56,756 INFO L85 PathProgramCache]: Analyzing trace with hash 2107588233, now seen corresponding path program 1 times [2022-07-13 12:55:56,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:55:56,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309438158] [2022-07-13 12:55:56,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:55:56,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:55:56,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:55:57,019 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 194 proven. 113 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-13 12:55:57,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:55:57,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309438158] [2022-07-13 12:55:57,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309438158] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 12:55:57,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948448198] [2022-07-13 12:55:57,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:55:57,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 12:55:57,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 12:55:57,021 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 12:55:57,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 12:55:57,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:55:57,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 12:55:57,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 12:55:57,250 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 227 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-07-13 12:55:57,250 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 12:55:57,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948448198] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:55:57,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 12:55:57,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-07-13 12:55:57,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086467415] [2022-07-13 12:55:57,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:55:57,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:55:57,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:55:57,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:55:57,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-07-13 12:55:57,251 INFO L87 Difference]: Start difference. First operand 43657 states and 50277 transitions. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:55:59,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:55:59,904 INFO L93 Difference]: Finished difference Result 86516 states and 99752 transitions. [2022-07-13 12:55:59,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:55:59,906 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 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 341 [2022-07-13 12:55:59,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:55:59,955 INFO L225 Difference]: With dead ends: 86516 [2022-07-13 12:55:59,955 INFO L226 Difference]: Without dead ends: 43648 [2022-07-13 12:55:59,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-07-13 12:55:59,985 INFO L413 NwaCegarLoop]: 689 mSDtfsCounter, 1076 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2395 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1076 SdHoareTripleChecker+Valid, 818 SdHoareTripleChecker+Invalid, 2922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 2395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-13 12:55:59,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1076 Valid, 818 Invalid, 2922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 2395 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-13 12:56:00,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43648 states. [2022-07-13 12:56:00,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43648 to 43647. [2022-07-13 12:56:00,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43647 states, 43646 states have (on average 1.1132749851074555) internal successors, (48590), 43646 states have internal predecessors, (48590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:00,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43647 states to 43647 states and 48590 transitions. [2022-07-13 12:56:00,516 INFO L78 Accepts]: Start accepts. Automaton has 43647 states and 48590 transitions. Word has length 341 [2022-07-13 12:56:00,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:56:00,516 INFO L495 AbstractCegarLoop]: Abstraction has 43647 states and 48590 transitions. [2022-07-13 12:56:00,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:00,516 INFO L276 IsEmpty]: Start isEmpty. Operand 43647 states and 48590 transitions. [2022-07-13 12:56:00,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2022-07-13 12:56:00,520 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:56:00,520 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:56:00,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 12:56:00,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-13 12:56:00,739 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:56:00,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:56:00,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1592896073, now seen corresponding path program 1 times [2022-07-13 12:56:00,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:56:00,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036040477] [2022-07-13 12:56:00,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:56:00,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:56:00,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:56:00,844 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2022-07-13 12:56:00,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:56:00,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036040477] [2022-07-13 12:56:00,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036040477] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:56:00,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:56:00,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:56:00,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962349385] [2022-07-13 12:56:00,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:56:00,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:56:00,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:56:00,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:56:00,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:56:00,846 INFO L87 Difference]: Start difference. First operand 43647 states and 48590 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:03,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:56:03,606 INFO L93 Difference]: Finished difference Result 86503 states and 96385 transitions. [2022-07-13 12:56:03,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:56:03,606 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 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 360 [2022-07-13 12:56:03,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:56:03,656 INFO L225 Difference]: With dead ends: 86503 [2022-07-13 12:56:03,657 INFO L226 Difference]: Without dead ends: 43645 [2022-07-13 12:56:03,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:56:03,684 INFO L413 NwaCegarLoop]: 1342 mSDtfsCounter, 1167 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 2463 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1167 SdHoareTripleChecker+Valid, 1421 SdHoareTripleChecker+Invalid, 2907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 2463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-13 12:56:03,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1167 Valid, 1421 Invalid, 2907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 2463 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-13 12:56:03,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43645 states. [2022-07-13 12:56:04,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43645 to 43644. [2022-07-13 12:56:04,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43644 states, 43643 states have (on average 1.086588914602571) internal successors, (47422), 43643 states have internal predecessors, (47422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:04,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43644 states to 43644 states and 47422 transitions. [2022-07-13 12:56:04,196 INFO L78 Accepts]: Start accepts. Automaton has 43644 states and 47422 transitions. Word has length 360 [2022-07-13 12:56:04,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:56:04,196 INFO L495 AbstractCegarLoop]: Abstraction has 43644 states and 47422 transitions. [2022-07-13 12:56:04,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:04,197 INFO L276 IsEmpty]: Start isEmpty. Operand 43644 states and 47422 transitions. [2022-07-13 12:56:04,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2022-07-13 12:56:04,202 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:56:04,202 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:56:04,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 12:56:04,203 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:56:04,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:56:04,203 INFO L85 PathProgramCache]: Analyzing trace with hash -489551286, now seen corresponding path program 1 times [2022-07-13 12:56:04,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:56:04,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438433572] [2022-07-13 12:56:04,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:56:04,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:56:04,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:56:04,425 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 456 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-07-13 12:56:04,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:56:04,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438433572] [2022-07-13 12:56:04,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438433572] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:56:04,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:56:04,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:56:04,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923084415] [2022-07-13 12:56:04,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:56:04,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 12:56:04,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:56:04,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 12:56:04,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 12:56:04,427 INFO L87 Difference]: Start difference. First operand 43644 states and 47422 transitions. Second operand has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:10,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:56:10,534 INFO L93 Difference]: Finished difference Result 150458 states and 163809 transitions. [2022-07-13 12:56:10,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 12:56:10,535 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 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 383 [2022-07-13 12:56:10,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:56:10,664 INFO L225 Difference]: With dead ends: 150458 [2022-07-13 12:56:10,664 INFO L226 Difference]: Without dead ends: 107603 [2022-07-13 12:56:10,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 12:56:10,675 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 1704 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 6635 mSolverCounterSat, 1036 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1704 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 7671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1036 IncrementalHoareTripleChecker+Valid, 6635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-07-13 12:56:10,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1704 Valid, 801 Invalid, 7671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1036 Valid, 6635 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-07-13 12:56:10,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107603 states. [2022-07-13 12:56:11,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107603 to 104326. [2022-07-13 12:56:11,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104326 states, 104325 states have (on average 1.0794344596213754) internal successors, (112612), 104325 states have internal predecessors, (112612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:11,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104326 states to 104326 states and 112612 transitions. [2022-07-13 12:56:11,923 INFO L78 Accepts]: Start accepts. Automaton has 104326 states and 112612 transitions. Word has length 383 [2022-07-13 12:56:11,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:56:11,923 INFO L495 AbstractCegarLoop]: Abstraction has 104326 states and 112612 transitions. [2022-07-13 12:56:11,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:11,924 INFO L276 IsEmpty]: Start isEmpty. Operand 104326 states and 112612 transitions. [2022-07-13 12:56:11,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2022-07-13 12:56:11,930 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:56:11,930 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:56:11,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 12:56:11,931 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:56:11,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:56:11,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1060659488, now seen corresponding path program 1 times [2022-07-13 12:56:11,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:56:11,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433350716] [2022-07-13 12:56:11,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:56:11,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:56:11,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:56:12,177 INFO L134 CoverageAnalysis]: Checked inductivity of 607 backedges. 363 proven. 113 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-07-13 12:56:12,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:56:12,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433350716] [2022-07-13 12:56:12,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433350716] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 12:56:12,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232691338] [2022-07-13 12:56:12,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:56:12,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 12:56:12,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 12:56:12,180 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 12:56:12,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 12:56:12,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:56:12,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 12:56:12,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 12:56:12,570 INFO L134 CoverageAnalysis]: Checked inductivity of 607 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 476 trivial. 0 not checked. [2022-07-13 12:56:12,571 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 12:56:12,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232691338] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:56:12,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 12:56:12,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-07-13 12:56:12,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288150066] [2022-07-13 12:56:12,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:56:12,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:56:12,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:56:12,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:56:12,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-13 12:56:12,573 INFO L87 Difference]: Start difference. First operand 104326 states and 112612 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:16,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:56:16,076 INFO L93 Difference]: Finished difference Result 233052 states and 253448 transitions. [2022-07-13 12:56:16,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:56:16,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 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 426 [2022-07-13 12:56:16,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:56:16,249 INFO L225 Difference]: With dead ends: 233052 [2022-07-13 12:56:16,249 INFO L226 Difference]: Without dead ends: 129515 [2022-07-13 12:56:16,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 425 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-13 12:56:16,298 INFO L413 NwaCegarLoop]: 798 mSDtfsCounter, 954 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2415 mSolverCounterSat, 939 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 954 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 3354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 939 IncrementalHoareTripleChecker+Valid, 2415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-13 12:56:16,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [954 Valid, 880 Invalid, 3354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [939 Valid, 2415 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-13 12:56:16,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129515 states. [2022-07-13 12:56:17,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129515 to 127922. [2022-07-13 12:56:17,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127922 states, 127921 states have (on average 1.0841925876126672) internal successors, (138691), 127921 states have internal predecessors, (138691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:17,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127922 states to 127922 states and 138691 transitions. [2022-07-13 12:56:17,838 INFO L78 Accepts]: Start accepts. Automaton has 127922 states and 138691 transitions. Word has length 426 [2022-07-13 12:56:17,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:56:17,839 INFO L495 AbstractCegarLoop]: Abstraction has 127922 states and 138691 transitions. [2022-07-13 12:56:17,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:17,840 INFO L276 IsEmpty]: Start isEmpty. Operand 127922 states and 138691 transitions. [2022-07-13 12:56:18,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2022-07-13 12:56:18,027 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:56:18,027 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:56:18,044 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-13 12:56:18,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-13 12:56:18,228 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:56:18,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:56:18,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1560615882, now seen corresponding path program 1 times [2022-07-13 12:56:18,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:56:18,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438850878] [2022-07-13 12:56:18,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:56:18,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:56:18,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:56:18,397 INFO L134 CoverageAnalysis]: Checked inductivity of 621 backedges. 460 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-07-13 12:56:18,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:56:18,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438850878] [2022-07-13 12:56:18,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438850878] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:56:18,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:56:18,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:56:18,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230501846] [2022-07-13 12:56:18,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:56:18,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:56:18,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:56:18,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:56:18,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:56:18,400 INFO L87 Difference]: Start difference. First operand 127922 states and 138691 transitions. Second operand has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:21,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:56:21,686 INFO L93 Difference]: Finished difference Result 256633 states and 278180 transitions. [2022-07-13 12:56:21,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:56:21,687 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 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 495 [2022-07-13 12:56:21,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:56:21,839 INFO L225 Difference]: With dead ends: 256633 [2022-07-13 12:56:21,840 INFO L226 Difference]: Without dead ends: 129500 [2022-07-13 12:56:21,877 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 [2022-07-13 12:56:21,878 INFO L413 NwaCegarLoop]: 1385 mSDtfsCounter, 835 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 2484 mSolverCounterSat, 607 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 835 SdHoareTripleChecker+Valid, 1470 SdHoareTripleChecker+Invalid, 3091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 607 IncrementalHoareTripleChecker+Valid, 2484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-13 12:56:21,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [835 Valid, 1470 Invalid, 3091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [607 Valid, 2484 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-13 12:56:21,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129500 states. [2022-07-13 12:56:23,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129500 to 127911. [2022-07-13 12:56:23,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127911 states, 127910 states have (on average 1.0648971933390665) internal successors, (136211), 127910 states have internal predecessors, (136211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:23,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127911 states to 127911 states and 136211 transitions. [2022-07-13 12:56:23,499 INFO L78 Accepts]: Start accepts. Automaton has 127911 states and 136211 transitions. Word has length 495 [2022-07-13 12:56:23,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:56:23,515 INFO L495 AbstractCegarLoop]: Abstraction has 127911 states and 136211 transitions. [2022-07-13 12:56:23,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:23,516 INFO L276 IsEmpty]: Start isEmpty. Operand 127911 states and 136211 transitions. [2022-07-13 12:56:23,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2022-07-13 12:56:23,527 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:56:23,528 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:56:23,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 12:56:23,528 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:56:23,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:56:23,529 INFO L85 PathProgramCache]: Analyzing trace with hash 759852934, now seen corresponding path program 1 times [2022-07-13 12:56:23,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:56:23,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404807731] [2022-07-13 12:56:23,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:56:23,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:56:23,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:56:23,823 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 303 proven. 113 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-13 12:56:23,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:56:23,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404807731] [2022-07-13 12:56:23,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404807731] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 12:56:23,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414149606] [2022-07-13 12:56:23,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:56:23,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 12:56:23,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 12:56:23,825 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 12:56:23,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 12:56:23,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:56:23,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 12:56:23,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 12:56:24,171 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 336 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-07-13 12:56:24,171 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 12:56:24,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414149606] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:56:24,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 12:56:24,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-07-13 12:56:24,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699413383] [2022-07-13 12:56:24,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:56:24,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:56:24,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:56:24,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:56:24,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-07-13 12:56:24,173 INFO L87 Difference]: Start difference. First operand 127911 states and 136211 transitions. Second operand has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:27,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:56:27,271 INFO L93 Difference]: Finished difference Result 252652 states and 269954 transitions. [2022-07-13 12:56:27,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:56:27,272 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 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 507 [2022-07-13 12:56:27,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:56:27,440 INFO L225 Difference]: With dead ends: 252652 [2022-07-13 12:56:27,441 INFO L226 Difference]: Without dead ends: 138915 [2022-07-13 12:56:27,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 506 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-07-13 12:56:27,481 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 1092 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 807 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1092 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 3068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 807 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-13 12:56:27,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1092 Valid, 390 Invalid, 3068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [807 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-13 12:56:27,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138915 states. [2022-07-13 12:56:28,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138915 to 138915. [2022-07-13 12:56:28,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138915 states, 138914 states have (on average 1.0621535626358753) internal successors, (147548), 138914 states have internal predecessors, (147548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:29,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138915 states to 138915 states and 147548 transitions. [2022-07-13 12:56:29,287 INFO L78 Accepts]: Start accepts. Automaton has 138915 states and 147548 transitions. Word has length 507 [2022-07-13 12:56:29,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:56:29,287 INFO L495 AbstractCegarLoop]: Abstraction has 138915 states and 147548 transitions. [2022-07-13 12:56:29,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:29,287 INFO L276 IsEmpty]: Start isEmpty. Operand 138915 states and 147548 transitions. [2022-07-13 12:56:29,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2022-07-13 12:56:29,301 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:56:29,301 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:56:29,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 12:56:29,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 12:56:29,504 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:56:29,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:56:29,504 INFO L85 PathProgramCache]: Analyzing trace with hash 733319304, now seen corresponding path program 1 times [2022-07-13 12:56:29,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:56:29,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206682459] [2022-07-13 12:56:29,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:56:29,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:56:29,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:56:29,708 INFO L134 CoverageAnalysis]: Checked inductivity of 736 backedges. 472 proven. 113 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-07-13 12:56:29,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:56:29,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206682459] [2022-07-13 12:56:29,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206682459] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 12:56:29,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052188066] [2022-07-13 12:56:29,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:56:29,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 12:56:29,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 12:56:29,710 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 12:56:29,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 12:56:29,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:56:29,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 714 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 12:56:29,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 12:56:29,990 INFO L134 CoverageAnalysis]: Checked inductivity of 736 backedges. 454 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2022-07-13 12:56:29,990 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 12:56:29,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052188066] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:56:29,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 12:56:29,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-07-13 12:56:29,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517598941] [2022-07-13 12:56:29,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:56:29,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:56:29,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:56:29,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:56:29,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-13 12:56:29,992 INFO L87 Difference]: Start difference. First operand 138915 states and 147548 transitions. Second operand has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:33,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:56:33,166 INFO L93 Difference]: Finished difference Result 264440 states and 281354 transitions. [2022-07-13 12:56:33,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:56:33,167 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 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 533 [2022-07-13 12:56:33,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:56:33,332 INFO L225 Difference]: With dead ends: 264440 [2022-07-13 12:56:33,332 INFO L226 Difference]: Without dead ends: 139699 [2022-07-13 12:56:33,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 532 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-13 12:56:33,385 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 922 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 2349 mSolverCounterSat, 660 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 3009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 660 IncrementalHoareTripleChecker+Valid, 2349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-13 12:56:33,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 469 Invalid, 3009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [660 Valid, 2349 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-13 12:56:33,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139699 states. [2022-07-13 12:56:34,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139699 to 138117. [2022-07-13 12:56:34,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138117 states, 138116 states have (on average 1.0581829766283415) internal successors, (146152), 138116 states have internal predecessors, (146152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:34,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138117 states to 138117 states and 146152 transitions. [2022-07-13 12:56:34,929 INFO L78 Accepts]: Start accepts. Automaton has 138117 states and 146152 transitions. Word has length 533 [2022-07-13 12:56:34,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:56:34,930 INFO L495 AbstractCegarLoop]: Abstraction has 138117 states and 146152 transitions. [2022-07-13 12:56:34,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:34,930 INFO L276 IsEmpty]: Start isEmpty. Operand 138117 states and 146152 transitions. [2022-07-13 12:56:34,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 597 [2022-07-13 12:56:34,948 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:56:34,948 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:56:34,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 12:56:35,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-13 12:56:35,156 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:56:35,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:56:35,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1779447628, now seen corresponding path program 1 times [2022-07-13 12:56:35,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:56:35,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120632387] [2022-07-13 12:56:35,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:56:35,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:56:35,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:56:35,364 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 393 proven. 110 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-13 12:56:35,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:56:35,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120632387] [2022-07-13 12:56:35,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120632387] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 12:56:35,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315813959] [2022-07-13 12:56:35,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:56:35,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 12:56:35,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 12:56:35,586 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 12:56:35,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 12:56:35,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:56:35,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 743 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 12:56:35,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 12:56:35,790 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 438 trivial. 0 not checked. [2022-07-13 12:56:35,790 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 12:56:35,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315813959] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:56:35,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 12:56:35,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2022-07-13 12:56:35,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265935738] [2022-07-13 12:56:35,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:56:35,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:56:35,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:56:35,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:56:35,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-13 12:56:35,791 INFO L87 Difference]: Start difference. First operand 138117 states and 146152 transitions. Second operand has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:39,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:56:39,321 INFO L93 Difference]: Finished difference Result 300623 states and 318635 transitions. [2022-07-13 12:56:39,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:56:39,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 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 596 [2022-07-13 12:56:39,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:56:39,535 INFO L225 Difference]: With dead ends: 300623 [2022-07-13 12:56:39,535 INFO L226 Difference]: Without dead ends: 176680 [2022-07-13 12:56:39,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 600 GetRequests, 595 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-13 12:56:39,605 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 979 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 2609 mSolverCounterSat, 679 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 3288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 679 IncrementalHoareTripleChecker+Valid, 2609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-13 12:56:39,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [979 Valid, 527 Invalid, 3288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [679 Valid, 2609 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-13 12:56:39,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176680 states. [2022-07-13 12:56:41,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176680 to 124722. [2022-07-13 12:56:41,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124722 states, 124721 states have (on average 1.0543372808107696) internal successors, (131498), 124721 states have internal predecessors, (131498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:41,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124722 states to 124722 states and 131498 transitions. [2022-07-13 12:56:41,418 INFO L78 Accepts]: Start accepts. Automaton has 124722 states and 131498 transitions. Word has length 596 [2022-07-13 12:56:41,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:56:41,419 INFO L495 AbstractCegarLoop]: Abstraction has 124722 states and 131498 transitions. [2022-07-13 12:56:41,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:41,419 INFO L276 IsEmpty]: Start isEmpty. Operand 124722 states and 131498 transitions. [2022-07-13 12:56:41,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1009 [2022-07-13 12:56:41,481 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:56:41,481 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:56:41,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-13 12:56:41,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-13 12:56:41,697 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:56:41,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:56:41,697 INFO L85 PathProgramCache]: Analyzing trace with hash 184363191, now seen corresponding path program 1 times [2022-07-13 12:56:41,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:56:41,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501461609] [2022-07-13 12:56:41,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:56:41,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:56:41,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:56:42,314 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 303 proven. 113 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-13 12:56:42,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:56:42,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501461609] [2022-07-13 12:56:42,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501461609] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 12:56:42,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186238884] [2022-07-13 12:56:42,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:56:42,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 12:56:42,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 12:56:42,315 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 12:56:42,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 12:56:42,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:56:42,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 1172 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 12:56:42,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 12:56:43,082 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 303 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-07-13 12:56:43,082 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 12:56:43,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186238884] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:56:43,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 12:56:43,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-13 12:56:43,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172659223] [2022-07-13 12:56:43,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:56:43,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:56:43,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:56:43,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:56:43,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-07-13 12:56:43,085 INFO L87 Difference]: Start difference. First operand 124722 states and 131498 transitions. Second operand has 3 states, 3 states have (on average 288.0) internal successors, (864), 2 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:46,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:56:46,047 INFO L93 Difference]: Finished difference Result 240005 states and 253406 transitions. [2022-07-13 12:56:46,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:56:46,047 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 288.0) internal successors, (864), 2 states have internal predecessors, (864), 0 states have call successors, (0), 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 1008 [2022-07-13 12:56:46,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:56:46,209 INFO L225 Difference]: With dead ends: 240005 [2022-07-13 12:56:46,209 INFO L226 Difference]: Without dead ends: 127880 [2022-07-13 12:56:46,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1014 GetRequests, 1007 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-07-13 12:56:46,274 INFO L413 NwaCegarLoop]: 991 mSDtfsCounter, 680 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2430 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 2538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-13 12:56:46,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [680 Valid, 1120 Invalid, 2538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2430 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-13 12:56:46,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127880 states. [2022-07-13 12:56:47,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127880 to 127871. [2022-07-13 12:56:47,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127871 states, 127870 states have (on average 1.0492687886134355) internal successors, (134170), 127870 states have internal predecessors, (134170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:47,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127871 states to 127871 states and 134170 transitions. [2022-07-13 12:56:47,822 INFO L78 Accepts]: Start accepts. Automaton has 127871 states and 134170 transitions. Word has length 1008 [2022-07-13 12:56:47,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:56:47,822 INFO L495 AbstractCegarLoop]: Abstraction has 127871 states and 134170 transitions. [2022-07-13 12:56:47,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 288.0) internal successors, (864), 2 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:47,822 INFO L276 IsEmpty]: Start isEmpty. Operand 127871 states and 134170 transitions. [2022-07-13 12:56:47,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1031 [2022-07-13 12:56:47,872 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:56:47,873 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:56:47,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-13 12:56:48,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-13 12:56:48,075 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:56:48,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:56:48,075 INFO L85 PathProgramCache]: Analyzing trace with hash -365313823, now seen corresponding path program 1 times [2022-07-13 12:56:48,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:56:48,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166270452] [2022-07-13 12:56:48,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:56:48,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:56:48,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:56:48,411 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 444 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2022-07-13 12:56:48,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:56:48,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166270452] [2022-07-13 12:56:48,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166270452] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:56:48,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:56:48,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:56:48,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051916776] [2022-07-13 12:56:48,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:56:48,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:56:48,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:56:48,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:56:48,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:56:48,414 INFO L87 Difference]: Start difference. First operand 127871 states and 134170 transitions. Second operand has 3 states, 3 states have (on average 282.6666666666667) internal successors, (848), 3 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:51,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:56:51,372 INFO L93 Difference]: Finished difference Result 242359 states and 254726 transitions. [2022-07-13 12:56:51,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:56:51,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 282.6666666666667) internal successors, (848), 3 states have internal predecessors, (848), 0 states have call successors, (0), 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 1030 [2022-07-13 12:56:51,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:56:51,503 INFO L225 Difference]: With dead ends: 242359 [2022-07-13 12:56:51,503 INFO L226 Difference]: Without dead ends: 128662 [2022-07-13 12:56:51,566 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 [2022-07-13 12:56:51,567 INFO L413 NwaCegarLoop]: 1725 mSDtfsCounter, 117 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 2437 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 1849 SdHoareTripleChecker+Invalid, 2450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-13 12:56:51,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 1849 Invalid, 2450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2437 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-13 12:56:51,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128662 states. [2022-07-13 12:56:53,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128662 to 128659. [2022-07-13 12:56:53,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128659 states, 128658 states have (on average 1.0491768875623746) internal successors, (134985), 128658 states have internal predecessors, (134985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:53,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128659 states to 128659 states and 134985 transitions. [2022-07-13 12:56:53,293 INFO L78 Accepts]: Start accepts. Automaton has 128659 states and 134985 transitions. Word has length 1030 [2022-07-13 12:56:53,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:56:53,294 INFO L495 AbstractCegarLoop]: Abstraction has 128659 states and 134985 transitions. [2022-07-13 12:56:53,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 282.6666666666667) internal successors, (848), 3 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:53,294 INFO L276 IsEmpty]: Start isEmpty. Operand 128659 states and 134985 transitions. [2022-07-13 12:56:53,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1130 [2022-07-13 12:56:53,360 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:56:53,360 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:56:53,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 12:56:53,360 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:56:53,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:56:53,361 INFO L85 PathProgramCache]: Analyzing trace with hash 823277254, now seen corresponding path program 1 times [2022-07-13 12:56:53,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:56:53,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443582517] [2022-07-13 12:56:53,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:56:53,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:56:53,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:56:53,610 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 576 proven. 0 refuted. 0 times theorem prover too weak. 789 trivial. 0 not checked. [2022-07-13 12:56:53,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:56:53,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443582517] [2022-07-13 12:56:53,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443582517] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:56:53,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:56:53,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 12:56:53,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482255870] [2022-07-13 12:56:53,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:56:53,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:56:53,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:56:53,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:56:53,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:56:53,613 INFO L87 Difference]: Start difference. First operand 128659 states and 134985 transitions. Second operand has 3 states, 3 states have (on average 261.6666666666667) internal successors, (785), 2 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:55,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:56:55,786 INFO L93 Difference]: Finished difference Result 242341 states and 254637 transitions. [2022-07-13 12:56:55,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:56:55,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 261.6666666666667) internal successors, (785), 2 states have internal predecessors, (785), 0 states have call successors, (0), 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 1129 [2022-07-13 12:56:55,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:56:55,932 INFO L225 Difference]: With dead ends: 242341 [2022-07-13 12:56:55,932 INFO L226 Difference]: Without dead ends: 127856 [2022-07-13 12:56:55,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:56:55,998 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 1619 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1447 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1619 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 1459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-13 12:56:55,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1619 Valid, 274 Invalid, 1459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1447 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-13 12:56:56,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127856 states. [2022-07-13 12:56:57,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127856 to 127855. [2022-07-13 12:56:57,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127855 states, 127854 states have (on average 1.048696169067843) internal successors, (134080), 127854 states have internal predecessors, (134080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:57,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127855 states to 127855 states and 134080 transitions. [2022-07-13 12:56:57,633 INFO L78 Accepts]: Start accepts. Automaton has 127855 states and 134080 transitions. Word has length 1129 [2022-07-13 12:56:57,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:56:57,634 INFO L495 AbstractCegarLoop]: Abstraction has 127855 states and 134080 transitions. [2022-07-13 12:56:57,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 261.6666666666667) internal successors, (785), 2 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:56:57,634 INFO L276 IsEmpty]: Start isEmpty. Operand 127855 states and 134080 transitions. [2022-07-13 12:56:57,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1134 [2022-07-13 12:56:57,708 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:56:57,709 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:56:57,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 12:56:57,709 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:56:57,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:56:57,709 INFO L85 PathProgramCache]: Analyzing trace with hash -53785475, now seen corresponding path program 1 times [2022-07-13 12:56:57,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:56:57,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572679364] [2022-07-13 12:56:57,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:56:57,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:56:57,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat