./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label00.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label00.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 890f1e18995284b0a908a97d5deeec0465d64ba29b3115b90de791926566ed26 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 07:49:49,231 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 07:49:49,232 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 07:49:49,263 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 07:49:49,264 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 07:49:49,265 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 07:49:49,268 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 07:49:49,271 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 07:49:49,273 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 07:49:49,285 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 07:49:49,287 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 07:49:49,289 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 07:49:49,289 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 07:49:49,291 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 07:49:49,293 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 07:49:49,297 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 07:49:49,298 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 07:49:49,300 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 07:49:49,301 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 07:49:49,306 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 07:49:49,307 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 07:49:49,308 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 07:49:49,310 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 07:49:49,310 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 07:49:49,312 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 07:49:49,318 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 07:49:49,318 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 07:49:49,319 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 07:49:49,319 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 07:49:49,320 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 07:49:49,321 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 07:49:49,321 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 07:49:49,322 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 07:49:49,323 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 07:49:49,324 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 07:49:49,325 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 07:49:49,325 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 07:49:49,326 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 07:49:49,326 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 07:49:49,326 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 07:49:49,327 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 07:49:49,328 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 07:49:49,333 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 07:49:49,365 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 07:49:49,366 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 07:49:49,366 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 07:49:49,367 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 07:49:49,367 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 07:49:49,368 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 07:49:49,368 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 07:49:49,368 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 07:49:49,369 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 07:49:49,369 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 07:49:49,370 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 07:49:49,370 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 07:49:49,370 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 07:49:49,370 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 07:49:49,370 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 07:49:49,371 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 07:49:49,371 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 07:49:49,371 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 07:49:49,371 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 07:49:49,371 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 07:49:49,372 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 07:49:49,372 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 07:49:49,372 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 07:49:49,372 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 07:49:49,372 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 07:49:49,373 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 07:49:49,373 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 07:49:49,373 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 07:49:49,373 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 07:49:49,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 07:49:49,374 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 07:49:49,374 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 07:49:49,374 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 07:49:49,374 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 890f1e18995284b0a908a97d5deeec0465d64ba29b3115b90de791926566ed26 [2022-07-21 07:49:49,690 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 07:49:49,714 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 07:49:49,716 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 07:49:49,717 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 07:49:49,718 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 07:49:49,720 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label00.c [2022-07-21 07:49:49,782 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f496862b8/26d8badaadb448db95a4ad160222d12c/FLAGd616c185a [2022-07-21 07:49:50,509 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 07:49:50,510 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label00.c [2022-07-21 07:49:50,534 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f496862b8/26d8badaadb448db95a4ad160222d12c/FLAGd616c185a [2022-07-21 07:49:50,609 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f496862b8/26d8badaadb448db95a4ad160222d12c [2022-07-21 07:49:50,611 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 07:49:50,612 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 07:49:50,615 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 07:49:50,615 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 07:49:50,618 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 07:49:50,619 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:49:50" (1/1) ... [2022-07-21 07:49:50,620 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29046064 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:49:50, skipping insertion in model container [2022-07-21 07:49:50,620 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:49:50" (1/1) ... [2022-07-21 07:49:50,626 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 07:49:50,736 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 07:49:50,981 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label00.c[11668,11681] [2022-07-21 07:49:51,016 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label00.c[13543,13556] [2022-07-21 07:49:51,666 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 07:49:51,678 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 07:49:51,714 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label00.c[11668,11681] [2022-07-21 07:49:51,725 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label00.c[13543,13556] [2022-07-21 07:49:52,167 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 07:49:52,224 INFO L208 MainTranslator]: Completed translation [2022-07-21 07:49:52,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:49:52 WrapperNode [2022-07-21 07:49:52,240 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 07:49:52,241 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 07:49:52,241 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 07:49:52,241 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 07:49:52,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:49:52" (1/1) ... [2022-07-21 07:49:52,322 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:49:52" (1/1) ... [2022-07-21 07:49:52,624 INFO L137 Inliner]: procedures = 37, calls = 22, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 5088 [2022-07-21 07:49:52,624 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 07:49:52,625 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 07:49:52,625 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 07:49:52,625 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 07:49:52,632 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:49:52" (1/1) ... [2022-07-21 07:49:52,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:49:52" (1/1) ... [2022-07-21 07:49:52,686 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:49:52" (1/1) ... [2022-07-21 07:49:52,687 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:49:52" (1/1) ... [2022-07-21 07:49:52,876 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:49:52" (1/1) ... [2022-07-21 07:49:52,916 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:49:52" (1/1) ... [2022-07-21 07:49:52,970 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:49:52" (1/1) ... [2022-07-21 07:49:53,098 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 07:49:53,099 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 07:49:53,100 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 07:49:53,100 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 07:49:53,102 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:49:52" (1/1) ... [2022-07-21 07:49:53,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 07:49:53,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 07:49:53,141 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 07:49:53,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 07:49:53,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 07:49:53,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 07:49:53,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 07:49:53,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 07:49:53,451 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 07:49:53,453 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 07:49:56,795 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 07:49:56,808 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 07:49:56,809 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-21 07:49:56,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:49:56 BoogieIcfgContainer [2022-07-21 07:49:56,811 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 07:49:56,813 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 07:49:56,813 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 07:49:56,816 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 07:49:56,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 07:49:50" (1/3) ... [2022-07-21 07:49:56,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22ad4392 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:49:56, skipping insertion in model container [2022-07-21 07:49:56,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:49:52" (2/3) ... [2022-07-21 07:49:56,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22ad4392 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:49:56, skipping insertion in model container [2022-07-21 07:49:56,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:49:56" (3/3) ... [2022-07-21 07:49:56,818 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label00.c [2022-07-21 07:49:56,830 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 07:49:56,831 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-21 07:49:56,884 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 07:49:56,889 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@1b76be89, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@515cda10 [2022-07-21 07:49:56,889 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-21 07:49:56,897 INFO L276 IsEmpty]: Start isEmpty. Operand has 911 states, 908 states have (on average 1.8997797356828194) internal successors, (1725), 910 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:49:56,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-21 07:49:56,908 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:49:56,909 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:49:56,909 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:49:56,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:49:56,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1599021611, now seen corresponding path program 1 times [2022-07-21 07:49:56,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:49:56,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866122426] [2022-07-21 07:49:56,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:49:56,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:49:57,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:49:57,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:49:57,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:49:57,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866122426] [2022-07-21 07:49:57,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866122426] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:49:57,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:49:57,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 07:49:57,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075256661] [2022-07-21 07:49:57,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:49:57,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:49:57,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:49:57,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:49:57,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:49:57,117 INFO L87 Difference]: Start difference. First operand has 911 states, 908 states have (on average 1.8997797356828194) internal successors, (1725), 910 states have internal predecessors, (1725), 0 states have call successors, (0), 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 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:00,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:50:00,483 INFO L93 Difference]: Finished difference Result 2538 states and 4880 transitions. [2022-07-21 07:50:00,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:50:00,486 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2022-07-21 07:50:00,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:50:00,512 INFO L225 Difference]: With dead ends: 2538 [2022-07-21 07:50:00,513 INFO L226 Difference]: Without dead ends: 1596 [2022-07-21 07:50:00,523 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 [2022-07-21 07:50:00,528 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 1035 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2437 mSolverCounterSat, 771 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 3208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 2437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-21 07:50:00,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1035 Valid, 311 Invalid, 3208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [771 Valid, 2437 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-21 07:50:00,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1596 states. [2022-07-21 07:50:00,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1596 to 1596. [2022-07-21 07:50:00,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1596 states, 1594 states have (on average 1.8387703889585947) internal successors, (2931), 1595 states have internal predecessors, (2931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:00,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1596 states to 1596 states and 2931 transitions. [2022-07-21 07:50:00,640 INFO L78 Accepts]: Start accepts. Automaton has 1596 states and 2931 transitions. Word has length 16 [2022-07-21 07:50:00,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:50:00,641 INFO L495 AbstractCegarLoop]: Abstraction has 1596 states and 2931 transitions. [2022-07-21 07:50:00,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:00,642 INFO L276 IsEmpty]: Start isEmpty. Operand 1596 states and 2931 transitions. [2022-07-21 07:50:00,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-21 07:50:00,643 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:50:00,643 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] [2022-07-21 07:50:00,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 07:50:00,644 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:50:00,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:50:00,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1592898568, now seen corresponding path program 1 times [2022-07-21 07:50:00,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:50:00,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410649316] [2022-07-21 07:50:00,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:50:00,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:50:00,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:50:00,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:50:00,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:50:00,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410649316] [2022-07-21 07:50:00,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410649316] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:50:00,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:50:00,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 07:50:00,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226454827] [2022-07-21 07:50:00,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:50:00,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 07:50:00,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:50:00,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 07:50:00,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 07:50:00,725 INFO L87 Difference]: Start difference. First operand 1596 states and 2931 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:00,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:50:00,800 INFO L93 Difference]: Finished difference Result 1654 states and 3020 transitions. [2022-07-21 07:50:00,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 07:50:00,801 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2022-07-21 07:50:00,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:50:00,808 INFO L225 Difference]: With dead ends: 1654 [2022-07-21 07:50:00,808 INFO L226 Difference]: Without dead ends: 1596 [2022-07-21 07:50:00,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-21 07:50:00,813 INFO L413 NwaCegarLoop]: 1590 mSDtfsCounter, 3 mSDsluCounter, 4736 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6326 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:50:00,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6326 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:50:00,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1596 states. [2022-07-21 07:50:00,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1596 to 1596. [2022-07-21 07:50:00,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1596 states, 1594 states have (on average 1.819322459222083) internal successors, (2900), 1595 states have internal predecessors, (2900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:00,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1596 states to 1596 states and 2900 transitions. [2022-07-21 07:50:00,852 INFO L78 Accepts]: Start accepts. Automaton has 1596 states and 2900 transitions. Word has length 34 [2022-07-21 07:50:00,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:50:00,852 INFO L495 AbstractCegarLoop]: Abstraction has 1596 states and 2900 transitions. [2022-07-21 07:50:00,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:00,854 INFO L276 IsEmpty]: Start isEmpty. Operand 1596 states and 2900 transitions. [2022-07-21 07:50:00,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-21 07:50:00,862 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:50:00,863 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:50:00,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 07:50:00,863 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:50:00,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:50:00,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1337087153, now seen corresponding path program 1 times [2022-07-21 07:50:00,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:50:00,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730135041] [2022-07-21 07:50:00,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:50:00,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:50:00,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:50:00,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:50:00,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:50:00,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730135041] [2022-07-21 07:50:00,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730135041] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:50:00,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:50:00,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 07:50:00,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778921035] [2022-07-21 07:50:00,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:50:00,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:50:00,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:50:00,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:50:00,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:50:00,999 INFO L87 Difference]: Start difference. First operand 1596 states and 2900 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:01,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:50:01,033 INFO L93 Difference]: Finished difference Result 1698 states and 3060 transitions. [2022-07-21 07:50:01,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:50:01,034 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-07-21 07:50:01,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:50:01,042 INFO L225 Difference]: With dead ends: 1698 [2022-07-21 07:50:01,042 INFO L226 Difference]: Without dead ends: 1644 [2022-07-21 07:50:01,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:50:01,044 INFO L413 NwaCegarLoop]: 1577 mSDtfsCounter, 1498 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 1676 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:50:01,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1498 Valid, 1676 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:50:01,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1644 states. [2022-07-21 07:50:01,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1644 to 1642. [2022-07-21 07:50:01,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1642 states, 1640 states have (on average 1.8128048780487804) internal successors, (2973), 1641 states have internal predecessors, (2973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:01,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1642 states to 1642 states and 2973 transitions. [2022-07-21 07:50:01,081 INFO L78 Accepts]: Start accepts. Automaton has 1642 states and 2973 transitions. Word has length 64 [2022-07-21 07:50:01,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:50:01,082 INFO L495 AbstractCegarLoop]: Abstraction has 1642 states and 2973 transitions. [2022-07-21 07:50:01,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:01,082 INFO L276 IsEmpty]: Start isEmpty. Operand 1642 states and 2973 transitions. [2022-07-21 07:50:01,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-21 07:50:01,083 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:50:01,084 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:50:01,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 07:50:01,084 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:50:01,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:50:01,085 INFO L85 PathProgramCache]: Analyzing trace with hash -119101755, now seen corresponding path program 1 times [2022-07-21 07:50:01,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:50:01,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321823388] [2022-07-21 07:50:01,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:50:01,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:50:01,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:50:01,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:50:01,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:50:01,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321823388] [2022-07-21 07:50:01,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321823388] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:50:01,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:50:01,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 07:50:01,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160541004] [2022-07-21 07:50:01,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:50:01,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 07:50:01,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:50:01,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 07:50:01,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 07:50:01,183 INFO L87 Difference]: Start difference. First operand 1642 states and 2973 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:01,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:50:01,398 INFO L93 Difference]: Finished difference Result 2642 states and 4553 transitions. [2022-07-21 07:50:01,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 07:50:01,399 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-07-21 07:50:01,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:50:01,409 INFO L225 Difference]: With dead ends: 2642 [2022-07-21 07:50:01,410 INFO L226 Difference]: Without dead ends: 2542 [2022-07-21 07:50:01,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-07-21 07:50:01,412 INFO L413 NwaCegarLoop]: 1555 mSDtfsCounter, 8419 mSDsluCounter, 908 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8419 SdHoareTripleChecker+Valid, 2463 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 07:50:01,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8419 Valid, 2463 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 07:50:01,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2542 states. [2022-07-21 07:50:01,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2542 to 1740. [2022-07-21 07:50:01,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1740 states, 1738 states have (on average 1.7986191024165707) internal successors, (3126), 1739 states have internal predecessors, (3126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:01,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1740 states to 1740 states and 3126 transitions. [2022-07-21 07:50:01,466 INFO L78 Accepts]: Start accepts. Automaton has 1740 states and 3126 transitions. Word has length 64 [2022-07-21 07:50:01,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:50:01,467 INFO L495 AbstractCegarLoop]: Abstraction has 1740 states and 3126 transitions. [2022-07-21 07:50:01,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:01,467 INFO L276 IsEmpty]: Start isEmpty. Operand 1740 states and 3126 transitions. [2022-07-21 07:50:01,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-21 07:50:01,468 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:50:01,468 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:50:01,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 07:50:01,469 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:50:01,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:50:01,469 INFO L85 PathProgramCache]: Analyzing trace with hash 91634997, now seen corresponding path program 1 times [2022-07-21 07:50:01,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:50:01,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007686574] [2022-07-21 07:50:01,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:50:01,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:50:01,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:50:01,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:50:01,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:50:01,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007686574] [2022-07-21 07:50:01,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007686574] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:50:01,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:50:01,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 07:50:01,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196111122] [2022-07-21 07:50:01,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:50:01,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:50:01,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:50:01,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:50:01,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:50:01,538 INFO L87 Difference]: Start difference. First operand 1740 states and 3126 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:01,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:50:01,598 INFO L93 Difference]: Finished difference Result 2114 states and 3710 transitions. [2022-07-21 07:50:01,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:50:01,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-07-21 07:50:01,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:50:01,608 INFO L225 Difference]: With dead ends: 2114 [2022-07-21 07:50:01,608 INFO L226 Difference]: Without dead ends: 1916 [2022-07-21 07:50:01,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:50:01,610 INFO L413 NwaCegarLoop]: 1557 mSDtfsCounter, 1489 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1489 SdHoareTripleChecker+Valid, 1635 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:50:01,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1489 Valid, 1635 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:50:01,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1916 states. [2022-07-21 07:50:01,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1916 to 1910. [2022-07-21 07:50:01,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1910 states, 1908 states have (on average 1.7735849056603774) internal successors, (3384), 1909 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:01,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1910 states to 1910 states and 3384 transitions. [2022-07-21 07:50:01,741 INFO L78 Accepts]: Start accepts. Automaton has 1910 states and 3384 transitions. Word has length 66 [2022-07-21 07:50:01,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:50:01,745 INFO L495 AbstractCegarLoop]: Abstraction has 1910 states and 3384 transitions. [2022-07-21 07:50:01,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:01,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1910 states and 3384 transitions. [2022-07-21 07:50:01,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-21 07:50:01,747 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:50:01,747 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:50:01,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 07:50:01,748 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:50:01,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:50:01,751 INFO L85 PathProgramCache]: Analyzing trace with hash 158128509, now seen corresponding path program 1 times [2022-07-21 07:50:01,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:50:01,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713351838] [2022-07-21 07:50:01,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:50:01,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:50:01,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:50:01,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:50:01,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:50:01,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713351838] [2022-07-21 07:50:01,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713351838] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:50:01,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:50:01,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 07:50:01,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645451095] [2022-07-21 07:50:01,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:50:01,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 07:50:01,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:50:01,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 07:50:01,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-21 07:50:01,976 INFO L87 Difference]: Start difference. First operand 1910 states and 3384 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:02,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:50:02,151 INFO L93 Difference]: Finished difference Result 2280 states and 3954 transitions. [2022-07-21 07:50:02,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 07:50:02,151 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-07-21 07:50:02,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:50:02,159 INFO L225 Difference]: With dead ends: 2280 [2022-07-21 07:50:02,159 INFO L226 Difference]: Without dead ends: 1912 [2022-07-21 07:50:02,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-07-21 07:50:02,161 INFO L413 NwaCegarLoop]: 1568 mSDtfsCounter, 3170 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3170 SdHoareTripleChecker+Valid, 1896 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:50:02,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3170 Valid, 1896 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:50:02,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1912 states. [2022-07-21 07:50:02,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1912 to 1910. [2022-07-21 07:50:02,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1910 states, 1908 states have (on average 1.771488469601677) internal successors, (3380), 1909 states have internal predecessors, (3380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:02,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1910 states to 1910 states and 3380 transitions. [2022-07-21 07:50:02,224 INFO L78 Accepts]: Start accepts. Automaton has 1910 states and 3380 transitions. Word has length 66 [2022-07-21 07:50:02,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:50:02,225 INFO L495 AbstractCegarLoop]: Abstraction has 1910 states and 3380 transitions. [2022-07-21 07:50:02,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:02,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1910 states and 3380 transitions. [2022-07-21 07:50:02,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-21 07:50:02,227 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:50:02,227 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:50:02,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 07:50:02,228 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:50:02,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:50:02,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1100417095, now seen corresponding path program 1 times [2022-07-21 07:50:02,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:50:02,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492220769] [2022-07-21 07:50:02,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:50:02,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:50:02,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:50:02,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:50:02,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:50:02,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492220769] [2022-07-21 07:50:02,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492220769] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:50:02,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:50:02,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 07:50:02,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609843828] [2022-07-21 07:50:02,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:50:02,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:50:02,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:50:02,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:50:02,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:50:02,284 INFO L87 Difference]: Start difference. First operand 1910 states and 3380 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:02,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:50:02,350 INFO L93 Difference]: Finished difference Result 2598 states and 4430 transitions. [2022-07-21 07:50:02,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:50:02,350 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-07-21 07:50:02,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:50:02,359 INFO L225 Difference]: With dead ends: 2598 [2022-07-21 07:50:02,359 INFO L226 Difference]: Without dead ends: 2230 [2022-07-21 07:50:02,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:50:02,361 INFO L413 NwaCegarLoop]: 1591 mSDtfsCounter, 1502 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 1686 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:50:02,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1502 Valid, 1686 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:50:02,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2230 states. [2022-07-21 07:50:02,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2230 to 2228. [2022-07-21 07:50:02,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2228 states, 2226 states have (on average 1.7322551662174304) internal successors, (3856), 2227 states have internal predecessors, (3856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:02,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2228 states to 2228 states and 3856 transitions. [2022-07-21 07:50:02,439 INFO L78 Accepts]: Start accepts. Automaton has 2228 states and 3856 transitions. Word has length 66 [2022-07-21 07:50:02,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:50:02,439 INFO L495 AbstractCegarLoop]: Abstraction has 2228 states and 3856 transitions. [2022-07-21 07:50:02,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:02,440 INFO L276 IsEmpty]: Start isEmpty. Operand 2228 states and 3856 transitions. [2022-07-21 07:50:02,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-21 07:50:02,441 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:50:02,441 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:50:02,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 07:50:02,441 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:50:02,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:50:02,441 INFO L85 PathProgramCache]: Analyzing trace with hash -826729383, now seen corresponding path program 1 times [2022-07-21 07:50:02,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:50:02,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81570636] [2022-07-21 07:50:02,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:50:02,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:50:02,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:50:02,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:50:02,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:50:02,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81570636] [2022-07-21 07:50:02,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81570636] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:50:02,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:50:02,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 07:50:02,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658655600] [2022-07-21 07:50:02,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:50:02,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:50:02,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:50:02,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:50:02,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:50:02,476 INFO L87 Difference]: Start difference. First operand 2228 states and 3856 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:02,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:50:02,574 INFO L93 Difference]: Finished difference Result 3504 states and 5778 transitions. [2022-07-21 07:50:02,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:50:02,575 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-07-21 07:50:02,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:50:02,585 INFO L225 Difference]: With dead ends: 3504 [2022-07-21 07:50:02,585 INFO L226 Difference]: Without dead ends: 2818 [2022-07-21 07:50:02,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:50:02,587 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 1506 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1506 SdHoareTripleChecker+Valid, 1695 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:50:02,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1506 Valid, 1695 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:50:02,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2818 states. [2022-07-21 07:50:02,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2818 to 2816. [2022-07-21 07:50:02,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2816 states, 2814 states have (on average 1.6773276474769012) internal successors, (4720), 2815 states have internal predecessors, (4720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:02,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2816 states to 2816 states and 4720 transitions. [2022-07-21 07:50:02,705 INFO L78 Accepts]: Start accepts. Automaton has 2816 states and 4720 transitions. Word has length 66 [2022-07-21 07:50:02,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:50:02,705 INFO L495 AbstractCegarLoop]: Abstraction has 2816 states and 4720 transitions. [2022-07-21 07:50:02,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:02,706 INFO L276 IsEmpty]: Start isEmpty. Operand 2816 states and 4720 transitions. [2022-07-21 07:50:02,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-21 07:50:02,706 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:50:02,706 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:50:02,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 07:50:02,707 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:50:02,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:50:02,707 INFO L85 PathProgramCache]: Analyzing trace with hash 992342265, now seen corresponding path program 1 times [2022-07-21 07:50:02,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:50:02,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166404382] [2022-07-21 07:50:02,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:50:02,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:50:02,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:50:02,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:50:02,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:50:02,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166404382] [2022-07-21 07:50:02,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166404382] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:50:02,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:50:02,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 07:50:02,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982032107] [2022-07-21 07:50:02,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:50:02,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:50:02,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:50:02,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:50:02,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:50:02,749 INFO L87 Difference]: Start difference. First operand 2816 states and 4720 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:02,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:50:02,943 INFO L93 Difference]: Finished difference Result 5172 states and 8210 transitions. [2022-07-21 07:50:02,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:50:02,947 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-07-21 07:50:02,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:50:02,964 INFO L225 Difference]: With dead ends: 5172 [2022-07-21 07:50:02,965 INFO L226 Difference]: Without dead ends: 3898 [2022-07-21 07:50:02,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:50:02,970 INFO L413 NwaCegarLoop]: 1617 mSDtfsCounter, 1510 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 1704 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:50:02,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1510 Valid, 1704 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:50:02,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3898 states. [2022-07-21 07:50:03,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3898 to 3896. [2022-07-21 07:50:03,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3896 states, 3894 states have (on average 1.610683102208526) internal successors, (6272), 3895 states have internal predecessors, (6272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:03,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3896 states to 3896 states and 6272 transitions. [2022-07-21 07:50:03,219 INFO L78 Accepts]: Start accepts. Automaton has 3896 states and 6272 transitions. Word has length 66 [2022-07-21 07:50:03,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:50:03,219 INFO L495 AbstractCegarLoop]: Abstraction has 3896 states and 6272 transitions. [2022-07-21 07:50:03,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:03,220 INFO L276 IsEmpty]: Start isEmpty. Operand 3896 states and 6272 transitions. [2022-07-21 07:50:03,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-21 07:50:03,225 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:50:03,225 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:50:03,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 07:50:03,225 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:50:03,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:50:03,226 INFO L85 PathProgramCache]: Analyzing trace with hash 192293446, now seen corresponding path program 1 times [2022-07-21 07:50:03,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:50:03,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773253412] [2022-07-21 07:50:03,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:50:03,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:50:03,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:50:03,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:50:03,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:50:03,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773253412] [2022-07-21 07:50:03,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773253412] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:50:03,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:50:03,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 07:50:03,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131530943] [2022-07-21 07:50:03,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:50:03,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 07:50:03,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:50:03,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 07:50:03,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 07:50:03,298 INFO L87 Difference]: Start difference. First operand 3896 states and 6272 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:03,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:50:03,666 INFO L93 Difference]: Finished difference Result 5654 states and 8806 transitions. [2022-07-21 07:50:03,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 07:50:03,667 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-07-21 07:50:03,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:50:03,687 INFO L225 Difference]: With dead ends: 5654 [2022-07-21 07:50:03,687 INFO L226 Difference]: Without dead ends: 5652 [2022-07-21 07:50:03,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 07:50:03,690 INFO L413 NwaCegarLoop]: 1606 mSDtfsCounter, 225 mSDsluCounter, 4685 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 6291 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:50:03,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 6291 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:50:03,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5652 states. [2022-07-21 07:50:03,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5652 to 3992. [2022-07-21 07:50:03,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3992 states, 3990 states have (on average 1.5919799498746867) internal successors, (6352), 3991 states have internal predecessors, (6352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:03,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3992 states to 3992 states and 6352 transitions. [2022-07-21 07:50:03,918 INFO L78 Accepts]: Start accepts. Automaton has 3992 states and 6352 transitions. Word has length 67 [2022-07-21 07:50:03,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:50:03,918 INFO L495 AbstractCegarLoop]: Abstraction has 3992 states and 6352 transitions. [2022-07-21 07:50:03,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:03,919 INFO L276 IsEmpty]: Start isEmpty. Operand 3992 states and 6352 transitions. [2022-07-21 07:50:03,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-21 07:50:03,920 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:50:03,920 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:50:03,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 07:50:03,920 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:50:03,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:50:03,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1338319212, now seen corresponding path program 1 times [2022-07-21 07:50:03,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:50:03,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040807082] [2022-07-21 07:50:03,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:50:03,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:50:03,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:50:03,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:50:03,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:50:03,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040807082] [2022-07-21 07:50:03,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040807082] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:50:03,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:50:03,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 07:50:03,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178762779] [2022-07-21 07:50:03,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:50:03,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:50:03,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:50:03,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:50:03,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:50:03,951 INFO L87 Difference]: Start difference. First operand 3992 states and 6352 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:04,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:50:04,219 INFO L93 Difference]: Finished difference Result 6495 states and 10006 transitions. [2022-07-21 07:50:04,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:50:04,220 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-07-21 07:50:04,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:50:04,230 INFO L225 Difference]: With dead ends: 6495 [2022-07-21 07:50:04,230 INFO L226 Difference]: Without dead ends: 5116 [2022-07-21 07:50:04,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:50:04,234 INFO L413 NwaCegarLoop]: 1625 mSDtfsCounter, 1511 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1511 SdHoareTripleChecker+Valid, 1708 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:50:04,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1511 Valid, 1708 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:50:04,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5116 states. [2022-07-21 07:50:04,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5116 to 5114. [2022-07-21 07:50:04,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5114 states, 5112 states have (on average 1.5528169014084507) internal successors, (7938), 5113 states have internal predecessors, (7938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:04,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5114 states to 5114 states and 7938 transitions. [2022-07-21 07:50:04,541 INFO L78 Accepts]: Start accepts. Automaton has 5114 states and 7938 transitions. Word has length 68 [2022-07-21 07:50:04,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:50:04,541 INFO L495 AbstractCegarLoop]: Abstraction has 5114 states and 7938 transitions. [2022-07-21 07:50:04,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:04,542 INFO L276 IsEmpty]: Start isEmpty. Operand 5114 states and 7938 transitions. [2022-07-21 07:50:04,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-07-21 07:50:04,543 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:50:04,543 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 07:50:04,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 07:50:04,544 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:50:04,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:50:04,544 INFO L85 PathProgramCache]: Analyzing trace with hash 363365800, now seen corresponding path program 1 times [2022-07-21 07:50:04,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:50:04,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367420900] [2022-07-21 07:50:04,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:50:04,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:50:04,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:50:04,613 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:50:04,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:50:04,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367420900] [2022-07-21 07:50:04,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367420900] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:50:04,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:50:04,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 07:50:04,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226877210] [2022-07-21 07:50:04,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:50:04,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 07:50:04,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:50:04,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 07:50:04,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 07:50:04,616 INFO L87 Difference]: Start difference. First operand 5114 states and 7938 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:10,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:50:10,402 INFO L93 Difference]: Finished difference Result 8873 states and 14829 transitions. [2022-07-21 07:50:10,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 07:50:10,403 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2022-07-21 07:50:10,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:50:10,415 INFO L225 Difference]: With dead ends: 8873 [2022-07-21 07:50:10,415 INFO L226 Difference]: Without dead ends: 7369 [2022-07-21 07:50:10,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 07:50:10,419 INFO L413 NwaCegarLoop]: 817 mSDtfsCounter, 2405 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 4807 mSolverCounterSat, 1137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2405 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 5944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1137 IncrementalHoareTripleChecker+Valid, 4807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-07-21 07:50:10,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2405 Valid, 838 Invalid, 5944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1137 Valid, 4807 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-07-21 07:50:10,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7369 states. [2022-07-21 07:50:10,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7369 to 7367. [2022-07-21 07:50:10,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7367 states, 7365 states have (on average 1.4294636795655125) internal successors, (10528), 7366 states have internal predecessors, (10528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:10,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7367 states to 7367 states and 10528 transitions. [2022-07-21 07:50:10,894 INFO L78 Accepts]: Start accepts. Automaton has 7367 states and 10528 transitions. Word has length 85 [2022-07-21 07:50:10,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:50:10,894 INFO L495 AbstractCegarLoop]: Abstraction has 7367 states and 10528 transitions. [2022-07-21 07:50:10,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:10,896 INFO L276 IsEmpty]: Start isEmpty. Operand 7367 states and 10528 transitions. [2022-07-21 07:50:10,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-21 07:50:10,897 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:50:10,898 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 07:50:10,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 07:50:10,898 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:50:10,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:50:10,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1621045453, now seen corresponding path program 1 times [2022-07-21 07:50:10,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:50:10,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842590165] [2022-07-21 07:50:10,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:50:10,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:50:10,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:50:10,951 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:50:10,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:50:10,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842590165] [2022-07-21 07:50:10,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842590165] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:50:10,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:50:10,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 07:50:10,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361225348] [2022-07-21 07:50:10,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:50:10,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:50:10,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:50:10,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:50:10,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:50:10,954 INFO L87 Difference]: Start difference. First operand 7367 states and 10528 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:13,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:50:13,894 INFO L93 Difference]: Finished difference Result 11875 states and 17912 transitions. [2022-07-21 07:50:13,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:50:13,895 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2022-07-21 07:50:13,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:50:13,911 INFO L225 Difference]: With dead ends: 11875 [2022-07-21 07:50:13,912 INFO L226 Difference]: Without dead ends: 8869 [2022-07-21 07:50:13,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:50:13,918 INFO L413 NwaCegarLoop]: 1092 mSDtfsCounter, 775 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 2319 mSolverCounterSat, 746 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 3065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 746 IncrementalHoareTripleChecker+Valid, 2319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-21 07:50:13,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [775 Valid, 1222 Invalid, 3065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [746 Valid, 2319 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-21 07:50:13,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8869 states. [2022-07-21 07:50:14,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8869 to 8869. [2022-07-21 07:50:14,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8869 states, 8867 states have (on average 1.4555091913837825) internal successors, (12906), 8868 states have internal predecessors, (12906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:14,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8869 states to 8869 states and 12906 transitions. [2022-07-21 07:50:14,435 INFO L78 Accepts]: Start accepts. Automaton has 8869 states and 12906 transitions. Word has length 87 [2022-07-21 07:50:14,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:50:14,436 INFO L495 AbstractCegarLoop]: Abstraction has 8869 states and 12906 transitions. [2022-07-21 07:50:14,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:14,436 INFO L276 IsEmpty]: Start isEmpty. Operand 8869 states and 12906 transitions. [2022-07-21 07:50:14,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-21 07:50:14,438 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:50:14,439 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:50:14,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 07:50:14,440 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:50:14,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:50:14,440 INFO L85 PathProgramCache]: Analyzing trace with hash -482219864, now seen corresponding path program 1 times [2022-07-21 07:50:14,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:50:14,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517114429] [2022-07-21 07:50:14,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:50:14,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:50:14,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:50:14,511 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-21 07:50:14,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:50:14,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517114429] [2022-07-21 07:50:14,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517114429] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:50:14,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:50:14,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 07:50:14,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569233840] [2022-07-21 07:50:14,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:50:14,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 07:50:14,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:50:14,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 07:50:14,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 07:50:14,514 INFO L87 Difference]: Start difference. First operand 8869 states and 12906 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:15,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:50:15,616 INFO L93 Difference]: Finished difference Result 27441 states and 39504 transitions. [2022-07-21 07:50:15,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 07:50:15,617 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-07-21 07:50:15,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:50:15,663 INFO L225 Difference]: With dead ends: 27441 [2022-07-21 07:50:15,663 INFO L226 Difference]: Without dead ends: 23871 [2022-07-21 07:50:15,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-21 07:50:15,675 INFO L413 NwaCegarLoop]: 1635 mSDtfsCounter, 6643 mSDsluCounter, 1936 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6643 SdHoareTripleChecker+Valid, 3571 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:50:15,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6643 Valid, 3571 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:50:15,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23871 states. [2022-07-21 07:50:16,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23871 to 12437. [2022-07-21 07:50:16,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12437 states, 12435 states have (on average 1.4457579412947326) internal successors, (17978), 12436 states have internal predecessors, (17978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:16,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12437 states to 12437 states and 17978 transitions. [2022-07-21 07:50:16,317 INFO L78 Accepts]: Start accepts. Automaton has 12437 states and 17978 transitions. Word has length 95 [2022-07-21 07:50:16,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:50:16,317 INFO L495 AbstractCegarLoop]: Abstraction has 12437 states and 17978 transitions. [2022-07-21 07:50:16,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:16,318 INFO L276 IsEmpty]: Start isEmpty. Operand 12437 states and 17978 transitions. [2022-07-21 07:50:16,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-21 07:50:16,321 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:50:16,321 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 07:50:16,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 07:50:16,321 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:50:16,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:50:16,322 INFO L85 PathProgramCache]: Analyzing trace with hash -452697646, now seen corresponding path program 1 times [2022-07-21 07:50:16,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:50:16,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503847766] [2022-07-21 07:50:16,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:50:16,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:50:16,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:50:16,391 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-21 07:50:16,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:50:16,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503847766] [2022-07-21 07:50:16,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503847766] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:50:16,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:50:16,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 07:50:16,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921694645] [2022-07-21 07:50:16,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:50:16,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 07:50:16,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:50:16,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 07:50:16,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 07:50:16,394 INFO L87 Difference]: Start difference. First operand 12437 states and 17978 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:17,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:50:17,852 INFO L93 Difference]: Finished difference Result 31009 states and 44576 transitions. [2022-07-21 07:50:17,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 07:50:17,853 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-07-21 07:50:17,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:50:17,896 INFO L225 Difference]: With dead ends: 31009 [2022-07-21 07:50:17,897 INFO L226 Difference]: Without dead ends: 27439 [2022-07-21 07:50:17,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-21 07:50:17,912 INFO L413 NwaCegarLoop]: 1637 mSDtfsCounter, 6527 mSDsluCounter, 2007 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6527 SdHoareTripleChecker+Valid, 3644 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 07:50:17,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6527 Valid, 3644 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 07:50:17,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27439 states. [2022-07-21 07:50:18,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27439 to 17797. [2022-07-21 07:50:18,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17797 states, 17795 states have (on average 1.4355717898286036) internal successors, (25546), 17796 states have internal predecessors, (25546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:18,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17797 states to 17797 states and 25546 transitions. [2022-07-21 07:50:18,935 INFO L78 Accepts]: Start accepts. Automaton has 17797 states and 25546 transitions. Word has length 95 [2022-07-21 07:50:18,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:50:18,935 INFO L495 AbstractCegarLoop]: Abstraction has 17797 states and 25546 transitions. [2022-07-21 07:50:18,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:18,936 INFO L276 IsEmpty]: Start isEmpty. Operand 17797 states and 25546 transitions. [2022-07-21 07:50:18,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-21 07:50:18,939 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:50:18,940 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 07:50:18,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 07:50:18,940 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:50:18,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:50:18,941 INFO L85 PathProgramCache]: Analyzing trace with hash -179009934, now seen corresponding path program 1 times [2022-07-21 07:50:18,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:50:18,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979525840] [2022-07-21 07:50:18,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:50:18,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:50:18,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:50:19,005 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-21 07:50:19,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:50:19,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979525840] [2022-07-21 07:50:19,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979525840] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:50:19,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:50:19,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 07:50:19,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401365422] [2022-07-21 07:50:19,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:50:19,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 07:50:19,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:50:19,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 07:50:19,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 07:50:19,007 INFO L87 Difference]: Start difference. First operand 17797 states and 25546 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:20,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:50:20,594 INFO L93 Difference]: Finished difference Result 34577 states and 49648 transitions. [2022-07-21 07:50:20,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 07:50:20,595 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-07-21 07:50:20,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:50:20,644 INFO L225 Difference]: With dead ends: 34577 [2022-07-21 07:50:20,644 INFO L226 Difference]: Without dead ends: 31007 [2022-07-21 07:50:20,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-21 07:50:20,659 INFO L413 NwaCegarLoop]: 1637 mSDtfsCounter, 6541 mSDsluCounter, 2020 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6541 SdHoareTripleChecker+Valid, 3657 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:50:20,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6541 Valid, 3657 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:50:20,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31007 states. [2022-07-21 07:50:21,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31007 to 21365. [2022-07-21 07:50:21,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21365 states, 21363 states have (on average 1.4332256705518889) internal successors, (30618), 21364 states have internal predecessors, (30618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:21,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21365 states to 21365 states and 30618 transitions. [2022-07-21 07:50:21,936 INFO L78 Accepts]: Start accepts. Automaton has 21365 states and 30618 transitions. Word has length 95 [2022-07-21 07:50:21,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:50:21,936 INFO L495 AbstractCegarLoop]: Abstraction has 21365 states and 30618 transitions. [2022-07-21 07:50:21,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:21,937 INFO L276 IsEmpty]: Start isEmpty. Operand 21365 states and 30618 transitions. [2022-07-21 07:50:21,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-21 07:50:21,941 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:50:21,941 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 07:50:21,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 07:50:21,941 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:50:21,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:50:21,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1640061714, now seen corresponding path program 1 times [2022-07-21 07:50:21,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:50:21,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648674051] [2022-07-21 07:50:21,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:50:21,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:50:21,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:50:22,019 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 07:50:22,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:50:22,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648674051] [2022-07-21 07:50:22,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648674051] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:50:22,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:50:22,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 07:50:22,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340310669] [2022-07-21 07:50:22,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:50:22,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 07:50:22,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:50:22,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 07:50:22,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 07:50:22,022 INFO L87 Difference]: Start difference. First operand 21365 states and 30618 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:24,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:50:24,160 INFO L93 Difference]: Finished difference Result 38145 states and 54720 transitions. [2022-07-21 07:50:24,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 07:50:24,161 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 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 95 [2022-07-21 07:50:24,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:50:24,198 INFO L225 Difference]: With dead ends: 38145 [2022-07-21 07:50:24,198 INFO L226 Difference]: Without dead ends: 34575 [2022-07-21 07:50:24,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-21 07:50:24,209 INFO L413 NwaCegarLoop]: 1635 mSDtfsCounter, 6608 mSDsluCounter, 2005 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6608 SdHoareTripleChecker+Valid, 3640 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 07:50:24,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6608 Valid, 3640 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 07:50:24,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34575 states. [2022-07-21 07:50:25,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34575 to 24933. [2022-07-21 07:50:25,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24933 states, 24931 states have (on average 1.4315510809835146) internal successors, (35690), 24932 states have internal predecessors, (35690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:25,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24933 states to 24933 states and 35690 transitions. [2022-07-21 07:50:25,853 INFO L78 Accepts]: Start accepts. Automaton has 24933 states and 35690 transitions. Word has length 95 [2022-07-21 07:50:25,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:50:25,855 INFO L495 AbstractCegarLoop]: Abstraction has 24933 states and 35690 transitions. [2022-07-21 07:50:25,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:25,855 INFO L276 IsEmpty]: Start isEmpty. Operand 24933 states and 35690 transitions. [2022-07-21 07:50:25,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-21 07:50:25,861 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:50:25,861 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:50:25,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 07:50:25,862 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:50:25,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:50:25,862 INFO L85 PathProgramCache]: Analyzing trace with hash -906023264, now seen corresponding path program 1 times [2022-07-21 07:50:25,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:50:25,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099964881] [2022-07-21 07:50:25,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:50:25,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:50:25,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:50:25,924 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:50:25,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:50:25,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099964881] [2022-07-21 07:50:25,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099964881] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:50:25,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:50:25,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 07:50:25,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256676813] [2022-07-21 07:50:25,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:50:25,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:50:25,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:50:25,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:50:25,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:50:25,926 INFO L87 Difference]: Start difference. First operand 24933 states and 35690 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:26,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:50:26,982 INFO L93 Difference]: Finished difference Result 38695 states and 55440 transitions. [2022-07-21 07:50:26,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:50:26,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2022-07-21 07:50:26,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:50:27,001 INFO L225 Difference]: With dead ends: 38695 [2022-07-21 07:50:27,002 INFO L226 Difference]: Without dead ends: 19061 [2022-07-21 07:50:27,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:50:27,017 INFO L413 NwaCegarLoop]: 1601 mSDtfsCounter, 54 mSDsluCounter, 1545 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 3146 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:50:27,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 3146 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:50:27,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19061 states. [2022-07-21 07:50:28,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19061 to 19059. [2022-07-21 07:50:28,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19059 states, 19057 states have (on average 1.4355354987668574) internal successors, (27357), 19058 states have internal predecessors, (27357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:28,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19059 states to 19059 states and 27357 transitions. [2022-07-21 07:50:28,214 INFO L78 Accepts]: Start accepts. Automaton has 19059 states and 27357 transitions. Word has length 97 [2022-07-21 07:50:28,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:50:28,214 INFO L495 AbstractCegarLoop]: Abstraction has 19059 states and 27357 transitions. [2022-07-21 07:50:28,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:28,215 INFO L276 IsEmpty]: Start isEmpty. Operand 19059 states and 27357 transitions. [2022-07-21 07:50:28,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-21 07:50:28,219 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:50:28,219 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 07:50:28,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-21 07:50:28,219 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:50:28,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:50:28,220 INFO L85 PathProgramCache]: Analyzing trace with hash -615309075, now seen corresponding path program 1 times [2022-07-21 07:50:28,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:50:28,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185542410] [2022-07-21 07:50:28,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:50:28,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:50:28,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:50:28,289 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-21 07:50:28,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:50:28,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185542410] [2022-07-21 07:50:28,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185542410] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:50:28,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:50:28,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 07:50:28,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308183598] [2022-07-21 07:50:28,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:50:28,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 07:50:28,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:50:28,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 07:50:28,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 07:50:28,292 INFO L87 Difference]: Start difference. First operand 19059 states and 27357 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:30,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:50:30,375 INFO L93 Difference]: Finished difference Result 31551 states and 45283 transitions. [2022-07-21 07:50:30,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 07:50:30,376 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 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 97 [2022-07-21 07:50:30,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:50:30,406 INFO L225 Difference]: With dead ends: 31551 [2022-07-21 07:50:30,406 INFO L226 Difference]: Without dead ends: 29053 [2022-07-21 07:50:30,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-21 07:50:30,415 INFO L413 NwaCegarLoop]: 1634 mSDtfsCounter, 6588 mSDsluCounter, 1974 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6588 SdHoareTripleChecker+Valid, 3608 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 07:50:30,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6588 Valid, 3608 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 07:50:30,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29053 states. [2022-07-21 07:50:31,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29053 to 21555. [2022-07-21 07:50:31,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21555 states, 21553 states have (on average 1.4340927017120586) internal successors, (30909), 21554 states have internal predecessors, (30909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:31,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21555 states to 21555 states and 30909 transitions. [2022-07-21 07:50:31,824 INFO L78 Accepts]: Start accepts. Automaton has 21555 states and 30909 transitions. Word has length 97 [2022-07-21 07:50:31,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:50:31,824 INFO L495 AbstractCegarLoop]: Abstraction has 21555 states and 30909 transitions. [2022-07-21 07:50:31,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:31,825 INFO L276 IsEmpty]: Start isEmpty. Operand 21555 states and 30909 transitions. [2022-07-21 07:50:31,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-21 07:50:31,829 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:50:31,829 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:50:31,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-21 07:50:31,829 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:50:31,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:50:31,830 INFO L85 PathProgramCache]: Analyzing trace with hash -605888281, now seen corresponding path program 1 times [2022-07-21 07:50:31,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:50:31,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173707991] [2022-07-21 07:50:31,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:50:31,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:50:31,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:50:31,870 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:50:31,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:50:31,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173707991] [2022-07-21 07:50:31,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173707991] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:50:31,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:50:31,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 07:50:31,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147161077] [2022-07-21 07:50:31,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:50:31,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:50:31,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:50:31,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:50:31,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:50:31,873 INFO L87 Difference]: Start difference. First operand 21555 states and 30909 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:32,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:50:32,541 INFO L93 Difference]: Finished difference Result 29671 states and 42455 transitions. [2022-07-21 07:50:32,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:50:32,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-07-21 07:50:32,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:50:32,556 INFO L225 Difference]: With dead ends: 29671 [2022-07-21 07:50:32,556 INFO L226 Difference]: Without dead ends: 13445 [2022-07-21 07:50:32,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:50:32,570 INFO L413 NwaCegarLoop]: 1594 mSDtfsCounter, 48 mSDsluCounter, 1537 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 3131 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:50:32,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 3131 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:50:32,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13445 states. [2022-07-21 07:50:33,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13445 to 13443. [2022-07-21 07:50:33,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13443 states, 13441 states have (on average 1.4330034967636336) internal successors, (19261), 13442 states have internal predecessors, (19261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:33,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13443 states to 13443 states and 19261 transitions. [2022-07-21 07:50:33,328 INFO L78 Accepts]: Start accepts. Automaton has 13443 states and 19261 transitions. Word has length 98 [2022-07-21 07:50:33,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:50:33,328 INFO L495 AbstractCegarLoop]: Abstraction has 13443 states and 19261 transitions. [2022-07-21 07:50:33,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:33,328 INFO L276 IsEmpty]: Start isEmpty. Operand 13443 states and 19261 transitions. [2022-07-21 07:50:33,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-21 07:50:33,331 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:50:33,331 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 07:50:33,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-21 07:50:33,331 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:50:33,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:50:33,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1773467421, now seen corresponding path program 1 times [2022-07-21 07:50:33,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:50:33,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863563912] [2022-07-21 07:50:33,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:50:33,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:50:33,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:50:33,366 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:50:33,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:50:33,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863563912] [2022-07-21 07:50:33,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863563912] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:50:33,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:50:33,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 07:50:33,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568507170] [2022-07-21 07:50:33,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:50:33,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:50:33,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:50:33,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:50:33,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:50:33,368 INFO L87 Difference]: Start difference. First operand 13443 states and 19261 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:33,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:50:33,840 INFO L93 Difference]: Finished difference Result 17503 states and 24983 transitions. [2022-07-21 07:50:33,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:50:33,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-07-21 07:50:33,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:50:33,848 INFO L225 Difference]: With dead ends: 17503 [2022-07-21 07:50:33,849 INFO L226 Difference]: Without dead ends: 9389 [2022-07-21 07:50:33,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:50:33,855 INFO L413 NwaCegarLoop]: 1587 mSDtfsCounter, 44 mSDsluCounter, 1529 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 3116 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:50:33,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 3116 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:50:33,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9389 states. [2022-07-21 07:50:34,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9389 to 9387. [2022-07-21 07:50:34,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9387 states, 9385 states have (on average 1.4372935535428877) internal successors, (13489), 9386 states have internal predecessors, (13489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:34,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9387 states to 9387 states and 13489 transitions. [2022-07-21 07:50:34,211 INFO L78 Accepts]: Start accepts. Automaton has 9387 states and 13489 transitions. Word has length 98 [2022-07-21 07:50:34,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:50:34,211 INFO L495 AbstractCegarLoop]: Abstraction has 9387 states and 13489 transitions. [2022-07-21 07:50:34,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:34,212 INFO L276 IsEmpty]: Start isEmpty. Operand 9387 states and 13489 transitions. [2022-07-21 07:50:34,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-21 07:50:34,213 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:50:34,213 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 07:50:34,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-21 07:50:34,214 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:50:34,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:50:34,214 INFO L85 PathProgramCache]: Analyzing trace with hash -934897581, now seen corresponding path program 1 times [2022-07-21 07:50:34,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:50:34,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120281432] [2022-07-21 07:50:34,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:50:34,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:50:34,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:50:34,248 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:50:34,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:50:34,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120281432] [2022-07-21 07:50:34,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120281432] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:50:34,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:50:34,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 07:50:34,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770651465] [2022-07-21 07:50:34,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:50:34,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:50:34,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:50:34,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:50:34,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:50:34,251 INFO L87 Difference]: Start difference. First operand 9387 states and 13489 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:34,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:50:34,450 INFO L93 Difference]: Finished difference Result 11419 states and 16325 transitions. [2022-07-21 07:50:34,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:50:34,453 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-07-21 07:50:34,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:50:34,460 INFO L225 Difference]: With dead ends: 11419 [2022-07-21 07:50:34,460 INFO L226 Difference]: Without dead ends: 7361 [2022-07-21 07:50:34,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:50:34,464 INFO L413 NwaCegarLoop]: 1580 mSDtfsCounter, 40 mSDsluCounter, 1521 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 3101 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:50:34,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 3101 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:50:34,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7361 states. [2022-07-21 07:50:34,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7361 to 7359. [2022-07-21 07:50:34,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7359 states, 7357 states have (on average 1.4447464999320374) internal successors, (10629), 7358 states have internal predecessors, (10629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:34,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7359 states to 7359 states and 10629 transitions. [2022-07-21 07:50:34,669 INFO L78 Accepts]: Start accepts. Automaton has 7359 states and 10629 transitions. Word has length 98 [2022-07-21 07:50:34,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:50:34,669 INFO L495 AbstractCegarLoop]: Abstraction has 7359 states and 10629 transitions. [2022-07-21 07:50:34,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:34,670 INFO L276 IsEmpty]: Start isEmpty. Operand 7359 states and 10629 transitions. [2022-07-21 07:50:34,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-21 07:50:34,670 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:50:34,670 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 07:50:34,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-21 07:50:34,671 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:50:34,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:50:34,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1022016375, now seen corresponding path program 1 times [2022-07-21 07:50:34,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:50:34,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239708595] [2022-07-21 07:50:34,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:50:34,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:50:34,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:50:34,910 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:50:34,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:50:34,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239708595] [2022-07-21 07:50:34,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239708595] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 07:50:34,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896697387] [2022-07-21 07:50:34,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:50:34,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 07:50:34,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 07:50:34,913 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) [2022-07-21 07:50:34,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 07:50:35,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:50:35,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 07:50:35,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 07:50:35,382 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-21 07:50:35,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 07:50:35,578 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-21 07:50:35,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896697387] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 07:50:35,579 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 07:50:35,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 4, 4] total 18 [2022-07-21 07:50:35,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629074778] [2022-07-21 07:50:35,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 07:50:35,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-21 07:50:35,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:50:35,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-21 07:50:35,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-07-21 07:50:35,580 INFO L87 Difference]: Start difference. First operand 7359 states and 10629 transitions. Second operand has 18 states, 18 states have (on average 15.38888888888889) internal successors, (277), 18 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:40,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:50:40,868 INFO L93 Difference]: Finished difference Result 32535 states and 44813 transitions. [2022-07-21 07:50:40,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-07-21 07:50:40,869 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 15.38888888888889) internal successors, (277), 18 states have internal predecessors, (277), 0 states have call successors, (0), 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 98 [2022-07-21 07:50:40,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:50:40,900 INFO L225 Difference]: With dead ends: 32535 [2022-07-21 07:50:40,900 INFO L226 Difference]: Without dead ends: 30505 [2022-07-21 07:50:40,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 191 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2232 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1175, Invalid=5467, Unknown=0, NotChecked=0, Total=6642 [2022-07-21 07:50:40,911 INFO L413 NwaCegarLoop]: 1574 mSDtfsCounter, 13988 mSDsluCounter, 5449 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13988 SdHoareTripleChecker+Valid, 7023 SdHoareTripleChecker+Invalid, 1358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 07:50:40,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13988 Valid, 7023 Invalid, 1358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 1162 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 07:50:40,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30505 states. [2022-07-21 07:50:42,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30505 to 22606. [2022-07-21 07:50:42,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22606 states, 22604 states have (on average 1.3587860555653866) internal successors, (30714), 22605 states have internal predecessors, (30714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:42,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22606 states to 22606 states and 30714 transitions. [2022-07-21 07:50:42,675 INFO L78 Accepts]: Start accepts. Automaton has 22606 states and 30714 transitions. Word has length 98 [2022-07-21 07:50:42,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:50:42,675 INFO L495 AbstractCegarLoop]: Abstraction has 22606 states and 30714 transitions. [2022-07-21 07:50:42,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 15.38888888888889) internal successors, (277), 18 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:50:42,675 INFO L276 IsEmpty]: Start isEmpty. Operand 22606 states and 30714 transitions. [2022-07-21 07:50:42,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-21 07:50:42,676 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:50:42,676 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 07:50:42,693 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-21 07:50:42,877 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,SelfDestructingSolverStorable22 [2022-07-21 07:50:42,877 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:50:42,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:50:42,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1244176043, now seen corresponding path program 1 times [2022-07-21 07:50:42,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:50:42,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012397537] [2022-07-21 07:50:42,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:50:42,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:50:42,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:50:43,080 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:50:43,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:50:43,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012397537] [2022-07-21 07:50:43,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012397537] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 07:50:43,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443270944] [2022-07-21 07:50:43,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:50:43,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 07:50:43,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 07:50:43,086 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) [2022-07-21 07:50:43,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 07:50:43,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:50:43,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-21 07:50:43,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 07:50:43,643 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:50:43,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 07:50:44,286 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:50:44,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443270944] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 07:50:44,287 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 07:50:44,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 29 [2022-07-21 07:50:44,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986460881] [2022-07-21 07:50:44,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 07:50:44,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-21 07:50:44,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:50:44,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-21 07:50:44,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=758, Unknown=0, NotChecked=0, Total=870 [2022-07-21 07:50:44,291 INFO L87 Difference]: Start difference. First operand 22606 states and 30714 transitions. Second operand has 30 states, 30 states have (on average 8.433333333333334) internal successors, (253), 29 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:51:15,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:51:15,783 INFO L93 Difference]: Finished difference Result 233959 states and 306410 transitions. [2022-07-21 07:51:15,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2022-07-21 07:51:15,784 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 8.433333333333334) internal successors, (253), 29 states have internal predecessors, (253), 0 states have call successors, (0), 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 99 [2022-07-21 07:51:15,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:51:16,251 INFO L225 Difference]: With dead ends: 233959 [2022-07-21 07:51:16,252 INFO L226 Difference]: Without dead ends: 216960 [2022-07-21 07:51:16,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8067 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=3510, Invalid=19140, Unknown=0, NotChecked=0, Total=22650 [2022-07-21 07:51:16,333 INFO L413 NwaCegarLoop]: 1640 mSDtfsCounter, 22550 mSDsluCounter, 9377 mSDsCounter, 0 mSdLazyCounter, 2210 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22550 SdHoareTripleChecker+Valid, 11017 SdHoareTripleChecker+Invalid, 2409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 2210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-21 07:51:16,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22550 Valid, 11017 Invalid, 2409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 2210 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-21 07:51:16,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216960 states.