./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.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/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash eb6a86313c6847913ca8b6f4f78c128447d9c9cbacc492e7ef1a5540e3f6a711 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 05:50:55,152 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 05:50:55,153 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 05:50:55,186 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 05:50:55,186 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 05:50:55,187 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 05:50:55,188 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 05:50:55,189 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 05:50:55,190 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 05:50:55,191 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 05:50:55,191 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 05:50:55,192 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 05:50:55,192 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 05:50:55,193 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 05:50:55,194 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 05:50:55,195 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 05:50:55,195 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 05:50:55,196 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 05:50:55,197 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 05:50:55,204 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 05:50:55,205 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 05:50:55,205 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 05:50:55,206 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 05:50:55,207 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 05:50:55,209 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 05:50:55,211 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 05:50:55,215 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 05:50:55,216 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 05:50:55,216 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 05:50:55,217 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 05:50:55,217 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 05:50:55,217 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 05:50:55,218 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 05:50:55,218 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 05:50:55,219 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 05:50:55,220 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 05:50:55,221 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 05:50:55,222 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 05:50:55,222 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 05:50:55,222 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 05:50:55,223 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 05:50:55,225 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 05:50:55,225 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 05:50:55,256 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 05:50:55,257 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 05:50:55,258 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 05:50:55,258 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 05:50:55,259 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 05:50:55,259 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 05:50:55,259 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 05:50:55,260 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 05:50:55,260 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 05:50:55,260 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 05:50:55,261 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 05:50:55,261 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 05:50:55,261 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 05:50:55,261 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 05:50:55,261 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 05:50:55,261 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 05:50:55,261 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 05:50:55,262 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 05:50:55,262 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 05:50:55,262 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 05:50:55,262 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 05:50:55,262 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 05:50:55,262 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 05:50:55,263 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 05:50:55,263 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 05:50:55,263 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 05:50:55,263 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 05:50:55,263 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 05:50:55,263 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 05:50:55,263 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 05:50:55,264 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 05:50:55,264 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 05:50:55,264 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 05:50:55,264 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb6a86313c6847913ca8b6f4f78c128447d9c9cbacc492e7ef1a5540e3f6a711 [2022-07-21 05:50:55,508 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 05:50:55,529 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 05:50:55,531 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 05:50:55,532 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 05:50:55,532 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 05:50:55,534 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-07-21 05:50:55,582 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d9a5c272/eb5735b35aad4d08ae9f254ad09881c6/FLAG814e33ae4 [2022-07-21 05:50:55,982 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 05:50:55,983 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-07-21 05:50:55,989 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d9a5c272/eb5735b35aad4d08ae9f254ad09881c6/FLAG814e33ae4 [2022-07-21 05:50:56,001 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d9a5c272/eb5735b35aad4d08ae9f254ad09881c6 [2022-07-21 05:50:56,003 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 05:50:56,004 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 05:50:56,006 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 05:50:56,006 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 05:50:56,008 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 05:50:56,009 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:50:56" (1/1) ... [2022-07-21 05:50:56,010 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a8e56e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:50:56, skipping insertion in model container [2022-07-21 05:50:56,010 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:50:56" (1/1) ... [2022-07-21 05:50:56,015 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 05:50:56,057 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 05:50:56,279 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[8460,8473] [2022-07-21 05:50:56,344 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 05:50:56,358 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 05:50:56,408 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[8460,8473] [2022-07-21 05:50:56,428 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 05:50:56,444 INFO L208 MainTranslator]: Completed translation [2022-07-21 05:50:56,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:50:56 WrapperNode [2022-07-21 05:50:56,444 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 05:50:56,445 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 05:50:56,445 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 05:50:56,445 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 05:50:56,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:50:56" (1/1) ... [2022-07-21 05:50:56,462 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:50:56" (1/1) ... [2022-07-21 05:50:56,493 INFO L137 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 766 [2022-07-21 05:50:56,494 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 05:50:56,494 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 05:50:56,495 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 05:50:56,495 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 05:50:56,515 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:50:56" (1/1) ... [2022-07-21 05:50:56,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:50:56" (1/1) ... [2022-07-21 05:50:56,526 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:50:56" (1/1) ... [2022-07-21 05:50:56,526 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:50:56" (1/1) ... [2022-07-21 05:50:56,532 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:50:56" (1/1) ... [2022-07-21 05:50:56,537 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:50:56" (1/1) ... [2022-07-21 05:50:56,538 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:50:56" (1/1) ... [2022-07-21 05:50:56,541 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 05:50:56,542 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 05:50:56,542 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 05:50:56,542 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 05:50:56,543 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:50:56" (1/1) ... [2022-07-21 05:50:56,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 05:50:56,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:50:56,565 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 05:50:56,574 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 05:50:56,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 05:50:56,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 05:50:56,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 05:50:56,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 05:50:56,739 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 05:50:56,740 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 05:50:57,292 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 05:50:57,298 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 05:50:57,299 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 05:50:57,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:50:57 BoogieIcfgContainer [2022-07-21 05:50:57,303 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 05:50:57,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 05:50:57,306 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 05:50:57,308 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 05:50:57,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 05:50:56" (1/3) ... [2022-07-21 05:50:57,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@208b6b44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:50:57, skipping insertion in model container [2022-07-21 05:50:57,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:50:56" (2/3) ... [2022-07-21 05:50:57,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@208b6b44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:50:57, skipping insertion in model container [2022-07-21 05:50:57,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:50:57" (3/3) ... [2022-07-21 05:50:57,311 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-07-21 05:50:57,322 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 05:50:57,322 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 05:50:57,365 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 05:50:57,369 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@6539e010, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@649a39aa [2022-07-21 05:50:57,369 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 05:50:57,373 INFO L276 IsEmpty]: Start isEmpty. Operand has 206 states, 204 states have (on average 1.7205882352941178) internal successors, (351), 205 states have internal predecessors, (351), 0 states have call successors, (0), 0 states 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 05:50:57,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-21 05:50:57,379 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:50:57,380 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:50:57,380 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:50:57,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:50:57,383 INFO L85 PathProgramCache]: Analyzing trace with hash -465870500, now seen corresponding path program 1 times [2022-07-21 05:50:57,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:50:57,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264613811] [2022-07-21 05:50:57,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:50:57,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:50:57,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:50:57,718 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 05:50:57,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:50:57,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264613811] [2022-07-21 05:50:57,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264613811] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:50:57,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:50:57,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:50:57,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290324822] [2022-07-21 05:50:57,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:50:57,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:50:57,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:50:57,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:50:57,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:50:57,747 INFO L87 Difference]: Start difference. First operand has 206 states, 204 states have (on average 1.7205882352941178) internal successors, (351), 205 states have internal predecessors, (351), 0 states have call successors, (0), 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 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states 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 05:50:58,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:50:58,024 INFO L93 Difference]: Finished difference Result 828 states and 1339 transitions. [2022-07-21 05:50:58,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 05:50:58,026 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2022-07-21 05:50:58,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:50:58,042 INFO L225 Difference]: With dead ends: 828 [2022-07-21 05:50:58,043 INFO L226 Difference]: Without dead ends: 713 [2022-07-21 05:50:58,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-21 05:50:58,050 INFO L413 NwaCegarLoop]: 356 mSDtfsCounter, 2417 mSDsluCounter, 1965 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2417 SdHoareTripleChecker+Valid, 2321 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:50:58,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2417 Valid, 2321 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:50:58,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2022-07-21 05:50:58,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 314. [2022-07-21 05:50:58,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 313 states have (on average 1.5047923322683705) internal successors, (471), 313 states have internal predecessors, (471), 0 states have call successors, (0), 0 states 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 05:50:58,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 471 transitions. [2022-07-21 05:50:58,126 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 471 transitions. Word has length 79 [2022-07-21 05:50:58,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:50:58,127 INFO L495 AbstractCegarLoop]: Abstraction has 314 states and 471 transitions. [2022-07-21 05:50:58,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states 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 05:50:58,128 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 471 transitions. [2022-07-21 05:50:58,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-21 05:50:58,134 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:50:58,134 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:50:58,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 05:50:58,134 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:50:58,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:50:58,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1819425779, now seen corresponding path program 1 times [2022-07-21 05:50:58,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:50:58,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135976975] [2022-07-21 05:50:58,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:50:58,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:50:58,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:50:58,284 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 05:50:58,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:50:58,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135976975] [2022-07-21 05:50:58,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135976975] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:50:58,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:50:58,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:50:58,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542728946] [2022-07-21 05:50:58,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:50:58,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:50:58,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:50:58,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:50:58,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:50:58,288 INFO L87 Difference]: Start difference. First operand 314 states and 471 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 05:50:58,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:50:58,540 INFO L93 Difference]: Finished difference Result 1370 states and 2124 transitions. [2022-07-21 05:50:58,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 05:50:58,541 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-07-21 05:50:58,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:50:58,544 INFO L225 Difference]: With dead ends: 1370 [2022-07-21 05:50:58,545 INFO L226 Difference]: Without dead ends: 1132 [2022-07-21 05:50:58,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:50:58,547 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 1164 mSDsluCounter, 926 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1164 SdHoareTripleChecker+Valid, 1381 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:50:58,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1164 Valid, 1381 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:50:58,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2022-07-21 05:50:58,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 1124. [2022-07-21 05:50:58,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1124 states, 1123 states have (on average 1.545859305431879) internal successors, (1736), 1123 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states 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 05:50:58,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1124 states to 1124 states and 1736 transitions. [2022-07-21 05:50:58,628 INFO L78 Accepts]: Start accepts. Automaton has 1124 states and 1736 transitions. Word has length 80 [2022-07-21 05:50:58,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:50:58,630 INFO L495 AbstractCegarLoop]: Abstraction has 1124 states and 1736 transitions. [2022-07-21 05:50:58,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 05:50:58,630 INFO L276 IsEmpty]: Start isEmpty. Operand 1124 states and 1736 transitions. [2022-07-21 05:50:58,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-07-21 05:50:58,634 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:50:58,634 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:50:58,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 05:50:58,637 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:50:58,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:50:58,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1286257119, now seen corresponding path program 1 times [2022-07-21 05:50:58,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:50:58,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025604854] [2022-07-21 05:50:58,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:50:58,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:50:58,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:50:58,734 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 05:50:58,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:50:58,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025604854] [2022-07-21 05:50:58,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025604854] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:50:58,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:50:58,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:50:58,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025878205] [2022-07-21 05:50:58,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:50:58,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:50:58,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:50:58,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:50:58,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:50:58,736 INFO L87 Difference]: Start difference. First operand 1124 states and 1736 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states 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 05:50:59,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:50:59,066 INFO L93 Difference]: Finished difference Result 2981 states and 4661 transitions. [2022-07-21 05:50:59,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:50:59,066 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-07-21 05:50:59,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:50:59,072 INFO L225 Difference]: With dead ends: 2981 [2022-07-21 05:50:59,073 INFO L226 Difference]: Without dead ends: 1934 [2022-07-21 05:50:59,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:50:59,079 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 1107 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1107 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:50:59,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1107 Valid, 287 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:50:59,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1934 states. [2022-07-21 05:50:59,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1934 to 1932. [2022-07-21 05:50:59,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1932 states, 1931 states have (on average 1.5546349041947178) internal successors, (3002), 1931 states have internal predecessors, (3002), 0 states have call successors, (0), 0 states 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 05:50:59,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1932 states to 1932 states and 3002 transitions. [2022-07-21 05:50:59,224 INFO L78 Accepts]: Start accepts. Automaton has 1932 states and 3002 transitions. Word has length 81 [2022-07-21 05:50:59,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:50:59,225 INFO L495 AbstractCegarLoop]: Abstraction has 1932 states and 3002 transitions. [2022-07-21 05:50:59,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states 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 05:50:59,225 INFO L276 IsEmpty]: Start isEmpty. Operand 1932 states and 3002 transitions. [2022-07-21 05:50:59,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-07-21 05:50:59,227 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:50:59,227 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:50:59,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 05:50:59,228 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:50:59,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:50:59,229 INFO L85 PathProgramCache]: Analyzing trace with hash 963502145, now seen corresponding path program 1 times [2022-07-21 05:50:59,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:50:59,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357978097] [2022-07-21 05:50:59,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:50:59,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:50:59,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:50:59,295 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 05:50:59,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:50:59,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357978097] [2022-07-21 05:50:59,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357978097] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:50:59,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:50:59,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:50:59,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100125249] [2022-07-21 05:50:59,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:50:59,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:50:59,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:50:59,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:50:59,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:50:59,297 INFO L87 Difference]: Start difference. First operand 1932 states and 3002 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states 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 05:50:59,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:50:59,657 INFO L93 Difference]: Finished difference Result 5245 states and 8233 transitions. [2022-07-21 05:50:59,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:50:59,658 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-07-21 05:50:59,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:50:59,669 INFO L225 Difference]: With dead ends: 5245 [2022-07-21 05:50:59,669 INFO L226 Difference]: Without dead ends: 3454 [2022-07-21 05:50:59,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:50:59,679 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 1063 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1063 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:50:59,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1063 Valid, 298 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:50:59,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3454 states. [2022-07-21 05:50:59,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3454 to 3452. [2022-07-21 05:50:59,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3452 states, 3451 states have (on average 1.5609968125181106) internal successors, (5387), 3451 states have internal predecessors, (5387), 0 states have call successors, (0), 0 states 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 05:50:59,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3452 states to 3452 states and 5387 transitions. [2022-07-21 05:50:59,915 INFO L78 Accepts]: Start accepts. Automaton has 3452 states and 5387 transitions. Word has length 81 [2022-07-21 05:50:59,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:50:59,915 INFO L495 AbstractCegarLoop]: Abstraction has 3452 states and 5387 transitions. [2022-07-21 05:50:59,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states 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 05:50:59,916 INFO L276 IsEmpty]: Start isEmpty. Operand 3452 states and 5387 transitions. [2022-07-21 05:50:59,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-07-21 05:50:59,917 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:50:59,917 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:50:59,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 05:50:59,918 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:50:59,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:50:59,918 INFO L85 PathProgramCache]: Analyzing trace with hash -990576080, now seen corresponding path program 1 times [2022-07-21 05:50:59,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:50:59,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817228824] [2022-07-21 05:50:59,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:50:59,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:50:59,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:50:59,966 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 05:50:59,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:50:59,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817228824] [2022-07-21 05:50:59,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817228824] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:50:59,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:50:59,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:50:59,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439464410] [2022-07-21 05:50:59,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:50:59,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:50:59,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:50:59,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:50:59,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:50:59,969 INFO L87 Difference]: Start difference. First operand 3452 states and 5387 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states 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 05:51:00,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:51:00,527 INFO L93 Difference]: Finished difference Result 9853 states and 15454 transitions. [2022-07-21 05:51:00,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:51:00,527 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-07-21 05:51:00,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:51:00,548 INFO L225 Difference]: With dead ends: 9853 [2022-07-21 05:51:00,548 INFO L226 Difference]: Without dead ends: 6508 [2022-07-21 05:51:00,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:51:00,554 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 1067 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1067 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:51:00,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1067 Valid, 287 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:51:00,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6508 states. [2022-07-21 05:51:00,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6508 to 6506. [2022-07-21 05:51:01,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6506 states, 6505 states have (on average 1.5600307455803228) internal successors, (10148), 6505 states have internal predecessors, (10148), 0 states have call successors, (0), 0 states 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 05:51:01,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6506 states to 6506 states and 10148 transitions. [2022-07-21 05:51:01,020 INFO L78 Accepts]: Start accepts. Automaton has 6506 states and 10148 transitions. Word has length 81 [2022-07-21 05:51:01,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:51:01,020 INFO L495 AbstractCegarLoop]: Abstraction has 6506 states and 10148 transitions. [2022-07-21 05:51:01,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states 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 05:51:01,021 INFO L276 IsEmpty]: Start isEmpty. Operand 6506 states and 10148 transitions. [2022-07-21 05:51:01,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-07-21 05:51:01,022 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:51:01,023 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:51:01,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 05:51:01,023 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:51:01,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:51:01,023 INFO L85 PathProgramCache]: Analyzing trace with hash 2100922190, now seen corresponding path program 1 times [2022-07-21 05:51:01,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:51:01,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189757015] [2022-07-21 05:51:01,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:51:01,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:51:01,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:51:01,064 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 05:51:01,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:51:01,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189757015] [2022-07-21 05:51:01,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189757015] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:51:01,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:51:01,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:51:01,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077926463] [2022-07-21 05:51:01,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:51:01,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:51:01,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:51:01,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:51:01,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:51:01,066 INFO L87 Difference]: Start difference. First operand 6506 states and 10148 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states 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 05:51:02,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:51:02,018 INFO L93 Difference]: Finished difference Result 19180 states and 29998 transitions. [2022-07-21 05:51:02,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:51:02,021 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-07-21 05:51:02,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:51:02,061 INFO L225 Difference]: With dead ends: 19180 [2022-07-21 05:51:02,062 INFO L226 Difference]: Without dead ends: 12728 [2022-07-21 05:51:02,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:51:02,072 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 1125 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1125 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:51:02,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1125 Valid, 283 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:51:02,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12728 states. [2022-07-21 05:51:03,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12728 to 12726. [2022-07-21 05:51:03,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12726 states, 12725 states have (on average 1.5544990176817288) internal successors, (19781), 12725 states have internal predecessors, (19781), 0 states have call successors, (0), 0 states 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 05:51:03,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12726 states to 12726 states and 19781 transitions. [2022-07-21 05:51:03,057 INFO L78 Accepts]: Start accepts. Automaton has 12726 states and 19781 transitions. Word has length 81 [2022-07-21 05:51:03,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:51:03,057 INFO L495 AbstractCegarLoop]: Abstraction has 12726 states and 19781 transitions. [2022-07-21 05:51:03,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states 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 05:51:03,057 INFO L276 IsEmpty]: Start isEmpty. Operand 12726 states and 19781 transitions. [2022-07-21 05:51:03,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-07-21 05:51:03,060 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:51:03,061 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:51:03,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 05:51:03,061 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:51:03,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:51:03,062 INFO L85 PathProgramCache]: Analyzing trace with hash -336684807, now seen corresponding path program 1 times [2022-07-21 05:51:03,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:51:03,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950948308] [2022-07-21 05:51:03,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:51:03,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:51:03,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:51:03,125 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 05:51:03,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:51:03,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950948308] [2022-07-21 05:51:03,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950948308] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:51:03,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:51:03,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:51:03,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173424885] [2022-07-21 05:51:03,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:51:03,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:51:03,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:51:03,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:51:03,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:51:03,127 INFO L87 Difference]: Start difference. First operand 12726 states and 19781 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 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 05:51:04,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:51:04,696 INFO L93 Difference]: Finished difference Result 25208 states and 39078 transitions. [2022-07-21 05:51:04,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 05:51:04,697 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-07-21 05:51:04,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:51:04,748 INFO L225 Difference]: With dead ends: 25208 [2022-07-21 05:51:04,748 INFO L226 Difference]: Without dead ends: 25206 [2022-07-21 05:51:04,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 05:51:04,757 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 288 mSDsluCounter, 873 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 1189 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:51:04,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 1189 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:51:04,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25206 states. [2022-07-21 05:51:05,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25206 to 13046. [2022-07-21 05:51:05,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13046 states, 13045 states have (on average 1.5408968953622078) internal successors, (20101), 13045 states have internal predecessors, (20101), 0 states have call successors, (0), 0 states 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 05:51:05,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13046 states to 13046 states and 20101 transitions. [2022-07-21 05:51:05,983 INFO L78 Accepts]: Start accepts. Automaton has 13046 states and 20101 transitions. Word has length 82 [2022-07-21 05:51:05,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:51:05,984 INFO L495 AbstractCegarLoop]: Abstraction has 13046 states and 20101 transitions. [2022-07-21 05:51:05,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 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 05:51:05,985 INFO L276 IsEmpty]: Start isEmpty. Operand 13046 states and 20101 transitions. [2022-07-21 05:51:05,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-21 05:51:05,988 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:51:05,988 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:51:05,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 05:51:05,989 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:51:05,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:51:05,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1586000185, now seen corresponding path program 1 times [2022-07-21 05:51:05,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:51:05,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753211817] [2022-07-21 05:51:05,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:51:05,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:51:06,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:51:06,154 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 05:51:06,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:51:06,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753211817] [2022-07-21 05:51:06,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753211817] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:51:06,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:51:06,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 05:51:06,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369209214] [2022-07-21 05:51:06,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:51:06,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 05:51:06,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:51:06,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 05:51:06,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-21 05:51:06,157 INFO L87 Difference]: Start difference. First operand 13046 states and 20101 transitions. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 9 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:51:10,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:51:10,474 INFO L93 Difference]: Finished difference Result 52551 states and 80374 transitions. [2022-07-21 05:51:10,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-21 05:51:10,474 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 9 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-07-21 05:51:10,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:51:10,550 INFO L225 Difference]: With dead ends: 52551 [2022-07-21 05:51:10,551 INFO L226 Difference]: Without dead ends: 45793 [2022-07-21 05:51:10,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2022-07-21 05:51:10,572 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 2092 mSDsluCounter, 1070 mSDsCounter, 0 mSdLazyCounter, 1030 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2092 SdHoareTripleChecker+Valid, 1331 SdHoareTripleChecker+Invalid, 1063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 05:51:10,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2092 Valid, 1331 Invalid, 1063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1030 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 05:51:10,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45793 states. [2022-07-21 05:51:12,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45793 to 13227. [2022-07-21 05:51:12,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13227 states, 13226 states have (on average 1.5387872372599425) internal successors, (20352), 13226 states have internal predecessors, (20352), 0 states have call successors, (0), 0 states 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 05:51:12,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13227 states to 13227 states and 20352 transitions. [2022-07-21 05:51:12,414 INFO L78 Accepts]: Start accepts. Automaton has 13227 states and 20352 transitions. Word has length 83 [2022-07-21 05:51:12,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:51:12,414 INFO L495 AbstractCegarLoop]: Abstraction has 13227 states and 20352 transitions. [2022-07-21 05:51:12,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 9 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:51:12,415 INFO L276 IsEmpty]: Start isEmpty. Operand 13227 states and 20352 transitions. [2022-07-21 05:51:12,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-21 05:51:12,419 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:51:12,419 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:51:12,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 05:51:12,419 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:51:12,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:51:12,420 INFO L85 PathProgramCache]: Analyzing trace with hash 640573063, now seen corresponding path program 1 times [2022-07-21 05:51:12,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:51:12,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810072847] [2022-07-21 05:51:12,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:51:12,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:51:12,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:51:12,529 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 05:51:12,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:51:12,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810072847] [2022-07-21 05:51:12,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810072847] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:51:12,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:51:12,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 05:51:12,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080638917] [2022-07-21 05:51:12,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:51:12,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 05:51:12,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:51:12,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 05:51:12,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-21 05:51:12,531 INFO L87 Difference]: Start difference. First operand 13227 states and 20352 transitions. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 9 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:51:16,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:51:16,486 INFO L93 Difference]: Finished difference Result 33787 states and 51664 transitions. [2022-07-21 05:51:16,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 05:51:16,488 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 9 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-07-21 05:51:16,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:51:16,536 INFO L225 Difference]: With dead ends: 33787 [2022-07-21 05:51:16,536 INFO L226 Difference]: Without dead ends: 32235 [2022-07-21 05:51:16,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=510, Unknown=0, NotChecked=0, Total=702 [2022-07-21 05:51:16,547 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 1926 mSDsluCounter, 1261 mSDsCounter, 0 mSdLazyCounter, 1152 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1926 SdHoareTripleChecker+Valid, 1559 SdHoareTripleChecker+Invalid, 1172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 05:51:16,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1926 Valid, 1559 Invalid, 1172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1152 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 05:51:16,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32235 states. [2022-07-21 05:51:17,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32235 to 13227. [2022-07-21 05:51:17,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13227 states, 13226 states have (on average 1.5386360199606834) internal successors, (20350), 13226 states have internal predecessors, (20350), 0 states have call successors, (0), 0 states 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 05:51:17,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13227 states to 13227 states and 20350 transitions. [2022-07-21 05:51:17,905 INFO L78 Accepts]: Start accepts. Automaton has 13227 states and 20350 transitions. Word has length 83 [2022-07-21 05:51:17,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:51:17,906 INFO L495 AbstractCegarLoop]: Abstraction has 13227 states and 20350 transitions. [2022-07-21 05:51:17,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 9 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:51:17,906 INFO L276 IsEmpty]: Start isEmpty. Operand 13227 states and 20350 transitions. [2022-07-21 05:51:17,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-21 05:51:17,910 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:51:17,911 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:51:17,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 05:51:17,911 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:51:17,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:51:17,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1864782503, now seen corresponding path program 1 times [2022-07-21 05:51:17,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:51:17,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226412312] [2022-07-21 05:51:17,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:51:17,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:51:17,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:51:18,063 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 05:51:18,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:51:18,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226412312] [2022-07-21 05:51:18,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226412312] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:51:18,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:51:18,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 05:51:18,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732978609] [2022-07-21 05:51:18,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:51:18,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 05:51:18,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:51:18,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 05:51:18,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-21 05:51:18,065 INFO L87 Difference]: Start difference. First operand 13227 states and 20350 transitions. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 9 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:51:23,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:51:23,711 INFO L93 Difference]: Finished difference Result 47131 states and 71790 transitions. [2022-07-21 05:51:23,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-21 05:51:23,711 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 9 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-07-21 05:51:23,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:51:23,772 INFO L225 Difference]: With dead ends: 47131 [2022-07-21 05:51:23,772 INFO L226 Difference]: Without dead ends: 42953 [2022-07-21 05:51:23,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=207, Invalid=663, Unknown=0, NotChecked=0, Total=870 [2022-07-21 05:51:23,794 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 2210 mSDsluCounter, 2033 mSDsCounter, 0 mSdLazyCounter, 1874 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2210 SdHoareTripleChecker+Valid, 2369 SdHoareTripleChecker+Invalid, 1904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-21 05:51:23,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2210 Valid, 2369 Invalid, 1904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1874 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-21 05:51:23,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42953 states. [2022-07-21 05:51:25,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42953 to 13531. [2022-07-21 05:51:25,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13531 states, 13530 states have (on average 1.536289726533629) internal successors, (20786), 13530 states have internal predecessors, (20786), 0 states have call successors, (0), 0 states 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 05:51:25,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13531 states to 13531 states and 20786 transitions. [2022-07-21 05:51:25,532 INFO L78 Accepts]: Start accepts. Automaton has 13531 states and 20786 transitions. Word has length 83 [2022-07-21 05:51:25,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:51:25,533 INFO L495 AbstractCegarLoop]: Abstraction has 13531 states and 20786 transitions. [2022-07-21 05:51:25,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 9 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:51:25,533 INFO L276 IsEmpty]: Start isEmpty. Operand 13531 states and 20786 transitions. [2022-07-21 05:51:25,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-21 05:51:25,537 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:51:25,537 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:51:25,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 05:51:25,537 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:51:25,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:51:25,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1599214311, now seen corresponding path program 1 times [2022-07-21 05:51:25,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:51:25,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378303805] [2022-07-21 05:51:25,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:51:25,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:51:25,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:51:25,656 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 05:51:25,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:51:25,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378303805] [2022-07-21 05:51:25,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378303805] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:51:25,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:51:25,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 05:51:25,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321288715] [2022-07-21 05:51:25,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:51:25,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 05:51:25,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:51:25,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 05:51:25,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-21 05:51:25,658 INFO L87 Difference]: Start difference. First operand 13531 states and 20786 transitions. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 9 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:51:33,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:51:33,437 INFO L93 Difference]: Finished difference Result 65235 states and 99516 transitions. [2022-07-21 05:51:33,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-21 05:51:33,438 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 9 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-07-21 05:51:33,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:51:33,523 INFO L225 Difference]: With dead ends: 65235 [2022-07-21 05:51:33,524 INFO L226 Difference]: Without dead ends: 55913 [2022-07-21 05:51:33,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2022-07-21 05:51:33,545 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 2333 mSDsluCounter, 1637 mSDsCounter, 0 mSdLazyCounter, 1561 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2333 SdHoareTripleChecker+Valid, 1950 SdHoareTripleChecker+Invalid, 1585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 05:51:33,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2333 Valid, 1950 Invalid, 1585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1561 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 05:51:33,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55913 states. [2022-07-21 05:51:35,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55913 to 13835. [2022-07-21 05:51:35,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13835 states, 13834 states have (on average 1.531227410727194) internal successors, (21183), 13834 states have internal predecessors, (21183), 0 states have call successors, (0), 0 states 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 05:51:35,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13835 states to 13835 states and 21183 transitions. [2022-07-21 05:51:35,703 INFO L78 Accepts]: Start accepts. Automaton has 13835 states and 21183 transitions. Word has length 83 [2022-07-21 05:51:35,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:51:35,703 INFO L495 AbstractCegarLoop]: Abstraction has 13835 states and 21183 transitions. [2022-07-21 05:51:35,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 9 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:51:35,703 INFO L276 IsEmpty]: Start isEmpty. Operand 13835 states and 21183 transitions. [2022-07-21 05:51:35,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-21 05:51:35,708 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:51:35,708 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:51:35,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 05:51:35,708 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:51:35,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:51:35,709 INFO L85 PathProgramCache]: Analyzing trace with hash 67573609, now seen corresponding path program 1 times [2022-07-21 05:51:35,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:51:35,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633548406] [2022-07-21 05:51:35,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:51:35,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:51:35,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:51:35,741 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 05:51:35,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:51:35,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633548406] [2022-07-21 05:51:35,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633548406] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:51:35,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:51:35,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:51:35,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586570336] [2022-07-21 05:51:35,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:51:35,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:51:35,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:51:35,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:51:35,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:51:35,743 INFO L87 Difference]: Start difference. First operand 13835 states and 21183 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:51:39,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:51:39,157 INFO L93 Difference]: Finished difference Result 38547 states and 59132 transitions. [2022-07-21 05:51:39,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:51:39,168 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-07-21 05:51:39,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:51:39,203 INFO L225 Difference]: With dead ends: 38547 [2022-07-21 05:51:39,203 INFO L226 Difference]: Without dead ends: 24775 [2022-07-21 05:51:39,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:51:39,219 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 1154 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1154 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:51:39,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1154 Valid, 288 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:51:39,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24775 states. [2022-07-21 05:51:42,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24775 to 24773. [2022-07-21 05:51:42,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24773 states, 24772 states have (on average 1.528257710318101) internal successors, (37858), 24772 states have internal predecessors, (37858), 0 states have call successors, (0), 0 states 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 05:51:42,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24773 states to 24773 states and 37858 transitions. [2022-07-21 05:51:42,569 INFO L78 Accepts]: Start accepts. Automaton has 24773 states and 37858 transitions. Word has length 83 [2022-07-21 05:51:42,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:51:42,569 INFO L495 AbstractCegarLoop]: Abstraction has 24773 states and 37858 transitions. [2022-07-21 05:51:42,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:51:42,570 INFO L276 IsEmpty]: Start isEmpty. Operand 24773 states and 37858 transitions. [2022-07-21 05:51:42,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-21 05:51:42,578 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:51:42,578 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:51:42,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 05:51:42,578 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:51:42,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:51:42,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1469957880, now seen corresponding path program 1 times [2022-07-21 05:51:42,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:51:42,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477768626] [2022-07-21 05:51:42,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:51:42,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:51:42,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:51:42,603 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 05:51:42,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:51:42,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477768626] [2022-07-21 05:51:42,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477768626] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:51:42,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:51:42,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:51:42,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024642888] [2022-07-21 05:51:42,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:51:42,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:51:42,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:51:42,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:51:42,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:51:42,605 INFO L87 Difference]: Start difference. First operand 24773 states and 37858 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 05:51:46,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:51:46,727 INFO L93 Difference]: Finished difference Result 40315 states and 61718 transitions. [2022-07-21 05:51:46,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:51:46,727 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2022-07-21 05:51:46,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:51:46,764 INFO L225 Difference]: With dead ends: 40315 [2022-07-21 05:51:46,765 INFO L226 Difference]: Without dead ends: 29213 [2022-07-21 05:51:46,778 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 05:51:46,779 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 174 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:51:46,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 568 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:51:46,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29213 states. [2022-07-21 05:51:50,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29213 to 28943. [2022-07-21 05:51:50,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28943 states, 28942 states have (on average 1.5115057701610117) internal successors, (43746), 28942 states have internal predecessors, (43746), 0 states have call successors, (0), 0 states 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 05:51:50,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28943 states to 28943 states and 43746 transitions. [2022-07-21 05:51:50,959 INFO L78 Accepts]: Start accepts. Automaton has 28943 states and 43746 transitions. Word has length 84 [2022-07-21 05:51:50,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:51:50,959 INFO L495 AbstractCegarLoop]: Abstraction has 28943 states and 43746 transitions. [2022-07-21 05:51:50,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 05:51:50,960 INFO L276 IsEmpty]: Start isEmpty. Operand 28943 states and 43746 transitions. [2022-07-21 05:51:50,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-21 05:51:50,968 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:51:50,968 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:51:50,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 05:51:50,968 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:51:50,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:51:50,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1045499168, now seen corresponding path program 1 times [2022-07-21 05:51:50,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:51:50,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84507121] [2022-07-21 05:51:50,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:51:50,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:51:51,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:51:51,042 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 05:51:51,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:51:51,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84507121] [2022-07-21 05:51:51,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84507121] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:51:51,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:51:51,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:51:51,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549067773] [2022-07-21 05:51:51,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:51:51,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:51:51,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:51:51,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:51:51,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:51:51,044 INFO L87 Difference]: Start difference. First operand 28943 states and 43746 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 05:51:59,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:51:59,009 INFO L93 Difference]: Finished difference Result 79451 states and 120132 transitions. [2022-07-21 05:51:59,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:51:59,009 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2022-07-21 05:51:59,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:51:59,097 INFO L225 Difference]: With dead ends: 79451 [2022-07-21 05:51:59,098 INFO L226 Difference]: Without dead ends: 52457 [2022-07-21 05:51:59,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 05:51:59,131 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 190 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:51:59,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 695 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:51:59,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52457 states. [2022-07-21 05:52:07,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52457 to 52119. [2022-07-21 05:52:07,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52119 states, 52118 states have (on average 1.4975632219194903) internal successors, (78050), 52118 states have internal predecessors, (78050), 0 states have call successors, (0), 0 states 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 05:52:07,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52119 states to 52119 states and 78050 transitions. [2022-07-21 05:52:07,532 INFO L78 Accepts]: Start accepts. Automaton has 52119 states and 78050 transitions. Word has length 84 [2022-07-21 05:52:07,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:52:07,532 INFO L495 AbstractCegarLoop]: Abstraction has 52119 states and 78050 transitions. [2022-07-21 05:52:07,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 05:52:07,533 INFO L276 IsEmpty]: Start isEmpty. Operand 52119 states and 78050 transitions. [2022-07-21 05:52:07,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-21 05:52:07,539 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:52:07,539 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:52:07,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 05:52:07,539 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:52:07,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:52:07,540 INFO L85 PathProgramCache]: Analyzing trace with hash -720169287, now seen corresponding path program 1 times [2022-07-21 05:52:07,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:52:07,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367356162] [2022-07-21 05:52:07,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:52:07,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:52:07,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:52:07,573 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 05:52:07,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:52:07,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367356162] [2022-07-21 05:52:07,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367356162] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:52:07,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:52:07,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:52:07,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177404893] [2022-07-21 05:52:07,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:52:07,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:52:07,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:52:07,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:52:07,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:52:07,574 INFO L87 Difference]: Start difference. First operand 52119 states and 78050 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 05:52:19,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:52:19,709 INFO L93 Difference]: Finished difference Result 119878 states and 179656 transitions. [2022-07-21 05:52:19,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:52:19,710 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2022-07-21 05:52:19,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:52:19,826 INFO L225 Difference]: With dead ends: 119878 [2022-07-21 05:52:19,826 INFO L226 Difference]: Without dead ends: 73046 [2022-07-21 05:52:19,861 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 05:52:19,862 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 200 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:52:19,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 550 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:52:19,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73046 states. [2022-07-21 05:52:28,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73046 to 51761. [2022-07-21 05:52:28,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51761 states, 51760 states have (on average 1.4831723338485316) internal successors, (76769), 51760 states have internal predecessors, (76769), 0 states have call successors, (0), 0 states 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 05:52:28,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51761 states to 51761 states and 76769 transitions. [2022-07-21 05:52:28,701 INFO L78 Accepts]: Start accepts. Automaton has 51761 states and 76769 transitions. Word has length 84 [2022-07-21 05:52:28,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:52:28,701 INFO L495 AbstractCegarLoop]: Abstraction has 51761 states and 76769 transitions. [2022-07-21 05:52:28,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 05:52:28,702 INFO L276 IsEmpty]: Start isEmpty. Operand 51761 states and 76769 transitions. [2022-07-21 05:52:28,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-21 05:52:28,708 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:52:28,708 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:52:28,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 05:52:28,708 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:52:28,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:52:28,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1264170607, now seen corresponding path program 1 times [2022-07-21 05:52:28,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:52:28,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429504121] [2022-07-21 05:52:28,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:52:28,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:52:28,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:52:28,752 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 05:52:28,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:52:28,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429504121] [2022-07-21 05:52:28,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429504121] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:52:28,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:52:28,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:52:28,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592500460] [2022-07-21 05:52:28,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:52:28,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:52:28,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:52:28,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:52:28,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:52:28,756 INFO L87 Difference]: Start difference. First operand 51761 states and 76769 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 05:52:37,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:52:37,970 INFO L93 Difference]: Finished difference Result 68036 states and 100649 transitions. [2022-07-21 05:52:37,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:52:37,971 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2022-07-21 05:52:37,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:52:38,047 INFO L225 Difference]: With dead ends: 68036 [2022-07-21 05:52:38,047 INFO L226 Difference]: Without dead ends: 53030 [2022-07-21 05:52:38,063 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 05:52:38,064 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 165 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:52:38,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 537 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:52:38,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53030 states.