./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label01.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label01.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 2143ca4203945b27e6275311afca0e2a24c1338b67c5ed4d9a859ee19c6064eb --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 20:57:01,071 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 20:57:01,072 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 20:57:01,098 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 20:57:01,100 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 20:57:01,101 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 20:57:01,107 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 20:57:01,108 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 20:57:01,109 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 20:57:01,110 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 20:57:01,110 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 20:57:01,111 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 20:57:01,111 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 20:57:01,112 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 20:57:01,112 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 20:57:01,113 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 20:57:01,113 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 20:57:01,114 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 20:57:01,115 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 20:57:01,116 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 20:57:01,117 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 20:57:01,123 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 20:57:01,124 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 20:57:01,125 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 20:57:01,126 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 20:57:01,128 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 20:57:01,132 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 20:57:01,133 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 20:57:01,134 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 20:57:01,134 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 20:57:01,135 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 20:57:01,135 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 20:57:01,136 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 20:57:01,136 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 20:57:01,137 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 20:57:01,138 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 20:57:01,138 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 20:57:01,138 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 20:57:01,138 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 20:57:01,139 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 20:57:01,139 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 20:57:01,140 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 20:57:01,141 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 20:57:01,165 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 20:57:01,165 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 20:57:01,165 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 20:57:01,166 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 20:57:01,167 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 20:57:01,167 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 20:57:01,167 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 20:57:01,168 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 20:57:01,168 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 20:57:01,168 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 20:57:01,169 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 20:57:01,169 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 20:57:01,169 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 20:57:01,169 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 20:57:01,169 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 20:57:01,169 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 20:57:01,169 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 20:57:01,170 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 20:57:01,170 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 20:57:01,170 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 20:57:01,170 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 20:57:01,170 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 20:57:01,170 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 20:57:01,171 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 20:57:01,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 20:57:01,171 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 20:57:01,171 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 20:57:01,171 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 20:57:01,171 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 20:57:01,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 20:57:01,172 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 20:57:01,172 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 20:57:01,172 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 20:57:01,172 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2143ca4203945b27e6275311afca0e2a24c1338b67c5ed4d9a859ee19c6064eb [2022-07-13 20:57:01,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 20:57:01,407 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 20:57:01,408 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 20:57:01,409 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 20:57:01,410 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 20:57:01,410 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label01.c [2022-07-13 20:57:01,465 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8780aa266/025bec91bce14375ae6d410ab05e9d5d/FLAG3eb890735 [2022-07-13 20:57:02,030 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 20:57:02,031 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label01.c [2022-07-13 20:57:02,047 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8780aa266/025bec91bce14375ae6d410ab05e9d5d/FLAG3eb890735 [2022-07-13 20:57:02,487 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8780aa266/025bec91bce14375ae6d410ab05e9d5d [2022-07-13 20:57:02,489 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 20:57:02,490 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 20:57:02,493 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 20:57:02,493 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 20:57:02,495 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 20:57:02,496 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 08:57:02" (1/1) ... [2022-07-13 20:57:02,496 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ee613ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:57:02, skipping insertion in model container [2022-07-13 20:57:02,496 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 08:57:02" (1/1) ... [2022-07-13 20:57:02,501 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 20:57:02,581 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 20:57:02,771 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label01.c[15482,15495] [2022-07-13 20:57:02,800 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label01.c[21037,21050] [2022-07-13 20:57:03,254 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 20:57:03,262 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 20:57:03,294 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label01.c[15482,15495] [2022-07-13 20:57:03,307 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label01.c[21037,21050] [2022-07-13 20:57:03,594 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 20:57:03,612 INFO L208 MainTranslator]: Completed translation [2022-07-13 20:57:03,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:57:03 WrapperNode [2022-07-13 20:57:03,613 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 20:57:03,614 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 20:57:03,614 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 20:57:03,614 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 20:57:03,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:57:03" (1/1) ... [2022-07-13 20:57:03,655 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:57:03" (1/1) ... [2022-07-13 20:57:03,924 INFO L137 Inliner]: procedures = 37, calls = 23, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 5149 [2022-07-13 20:57:03,924 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 20:57:03,925 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 20:57:03,925 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 20:57:03,925 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 20:57:03,943 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:57:03" (1/1) ... [2022-07-13 20:57:03,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:57:03" (1/1) ... [2022-07-13 20:57:04,017 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:57:03" (1/1) ... [2022-07-13 20:57:04,021 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:57:03" (1/1) ... [2022-07-13 20:57:04,206 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:57:03" (1/1) ... [2022-07-13 20:57:04,229 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:57:03" (1/1) ... [2022-07-13 20:57:04,269 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:57:03" (1/1) ... [2022-07-13 20:57:04,326 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 20:57:04,328 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 20:57:04,328 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 20:57:04,328 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 20:57:04,330 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:57:03" (1/1) ... [2022-07-13 20:57:04,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 20:57:04,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:57:04,352 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 20:57:04,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 20:57:04,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 20:57:04,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 20:57:04,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 20:57:04,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 20:57:04,505 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 20:57:04,506 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 20:57:07,352 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 20:57:07,368 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 20:57:07,369 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-13 20:57:07,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:57:07 BoogieIcfgContainer [2022-07-13 20:57:07,372 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 20:57:07,373 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 20:57:07,374 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 20:57:07,376 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 20:57:07,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 08:57:02" (1/3) ... [2022-07-13 20:57:07,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@745222c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 08:57:07, skipping insertion in model container [2022-07-13 20:57:07,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:57:03" (2/3) ... [2022-07-13 20:57:07,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@745222c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 08:57:07, skipping insertion in model container [2022-07-13 20:57:07,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:57:07" (3/3) ... [2022-07-13 20:57:07,378 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label01.c [2022-07-13 20:57:07,387 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 20:57:07,387 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 20:57:07,437 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 20:57:07,442 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@563eb434, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@79f3d357 [2022-07-13 20:57:07,442 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-13 20:57:07,448 INFO L276 IsEmpty]: Start isEmpty. Operand has 926 states, 923 states have (on average 1.8992416034669555) internal successors, (1753), 925 states have internal predecessors, (1753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:57:07,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-13 20:57:07,459 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:57:07,460 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] [2022-07-13 20:57:07,460 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:57:07,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:57:07,464 INFO L85 PathProgramCache]: Analyzing trace with hash 340623278, now seen corresponding path program 1 times [2022-07-13 20:57:07,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:57:07,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152269635] [2022-07-13 20:57:07,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:57:07,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:57:07,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:57:07,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:57:07,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:57:07,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152269635] [2022-07-13 20:57:07,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152269635] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:57:07,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:57:07,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 20:57:07,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135759230] [2022-07-13 20:57:07,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:57:07,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 20:57:07,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:57:07,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 20:57:07,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 20:57:07,661 INFO L87 Difference]: Start difference. First operand has 926 states, 923 states have (on average 1.8992416034669555) internal successors, (1753), 925 states have internal predecessors, (1753), 0 states have call successors, (0), 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 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:57:07,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:57:07,710 INFO L93 Difference]: Finished difference Result 1806 states and 3418 transitions. [2022-07-13 20:57:07,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 20:57:07,713 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-07-13 20:57:07,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:57:07,732 INFO L225 Difference]: With dead ends: 1806 [2022-07-13 20:57:07,732 INFO L226 Difference]: Without dead ends: 860 [2022-07-13 20:57:07,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 20:57:07,741 INFO L413 NwaCegarLoop]: 1687 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1687 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:57:07,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1687 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:57:07,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2022-07-13 20:57:07,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 860. [2022-07-13 20:57:07,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 860 states, 858 states have (on average 1.8881118881118881) internal successors, (1620), 859 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:57:07,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 1620 transitions. [2022-07-13 20:57:07,811 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 1620 transitions. Word has length 38 [2022-07-13 20:57:07,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:57:07,811 INFO L495 AbstractCegarLoop]: Abstraction has 860 states and 1620 transitions. [2022-07-13 20:57:07,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:57:07,812 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 1620 transitions. [2022-07-13 20:57:07,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-13 20:57:07,816 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:57:07,816 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] [2022-07-13 20:57:07,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 20:57:07,816 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:57:07,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:57:07,817 INFO L85 PathProgramCache]: Analyzing trace with hash 615382892, now seen corresponding path program 1 times [2022-07-13 20:57:07,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:57:07,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825954075] [2022-07-13 20:57:07,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:57:07,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:57:07,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:57:07,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:57:07,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:57:07,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825954075] [2022-07-13 20:57:07,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825954075] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:57:07,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:57:07,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 20:57:07,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224830544] [2022-07-13 20:57:07,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:57:07,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 20:57:07,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:57:07,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 20:57:07,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 20:57:07,928 INFO L87 Difference]: Start difference. First operand 860 states and 1620 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:57:08,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:57:08,072 INFO L93 Difference]: Finished difference Result 924 states and 1719 transitions. [2022-07-13 20:57:08,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 20:57:08,072 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-07-13 20:57:08,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:57:08,075 INFO L225 Difference]: With dead ends: 924 [2022-07-13 20:57:08,075 INFO L226 Difference]: Without dead ends: 860 [2022-07-13 20:57:08,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:57:08,077 INFO L413 NwaCegarLoop]: 1618 mSDtfsCounter, 3 mSDsluCounter, 4811 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6429 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 20:57:08,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6429 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 20:57:08,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2022-07-13 20:57:08,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 860. [2022-07-13 20:57:08,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 860 states, 858 states have (on average 1.8414918414918415) internal successors, (1580), 859 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:57:08,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 1580 transitions. [2022-07-13 20:57:08,091 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 1580 transitions. Word has length 38 [2022-07-13 20:57:08,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:57:08,091 INFO L495 AbstractCegarLoop]: Abstraction has 860 states and 1580 transitions. [2022-07-13 20:57:08,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:57:08,092 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 1580 transitions. [2022-07-13 20:57:08,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-07-13 20:57:08,097 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:57:08,097 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] [2022-07-13 20:57:08,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 20:57:08,098 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:57:08,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:57:08,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1750363563, now seen corresponding path program 1 times [2022-07-13 20:57:08,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:57:08,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895677620] [2022-07-13 20:57:08,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:57:08,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:57:08,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:57:08,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:57:08,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:57:08,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895677620] [2022-07-13 20:57:08,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895677620] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:57:08,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:57:08,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:57:08,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150002600] [2022-07-13 20:57:08,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:57:08,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 20:57:08,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:57:08,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 20:57:08,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 20:57:08,193 INFO L87 Difference]: Start difference. First operand 860 states and 1580 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:57:13,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:57:13,106 INFO L93 Difference]: Finished difference Result 3115 states and 5889 transitions. [2022-07-13 20:57:13,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 20:57:13,106 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2022-07-13 20:57:13,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:57:13,117 INFO L225 Difference]: With dead ends: 3115 [2022-07-13 20:57:13,117 INFO L226 Difference]: Without dead ends: 2362 [2022-07-13 20:57:13,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 20:57:13,119 INFO L413 NwaCegarLoop]: 816 mSDtfsCounter, 2491 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5354 mSolverCounterSat, 1161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2491 SdHoareTripleChecker+Valid, 834 SdHoareTripleChecker+Invalid, 6515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1161 IncrementalHoareTripleChecker+Valid, 5354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-07-13 20:57:13,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2491 Valid, 834 Invalid, 6515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1161 Valid, 5354 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-07-13 20:57:13,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2362 states. [2022-07-13 20:57:13,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2362 to 2362. [2022-07-13 20:57:13,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2362 states, 2360 states have (on average 1.5652542372881355) internal successors, (3694), 2361 states have internal predecessors, (3694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:57:13,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2362 states to 2362 states and 3694 transitions. [2022-07-13 20:57:13,169 INFO L78 Accepts]: Start accepts. Automaton has 2362 states and 3694 transitions. Word has length 48 [2022-07-13 20:57:13,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:57:13,169 INFO L495 AbstractCegarLoop]: Abstraction has 2362 states and 3694 transitions. [2022-07-13 20:57:13,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:57:13,170 INFO L276 IsEmpty]: Start isEmpty. Operand 2362 states and 3694 transitions. [2022-07-13 20:57:13,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-13 20:57:13,170 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:57:13,171 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:57:13,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 20:57:13,171 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:57:13,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:57:13,172 INFO L85 PathProgramCache]: Analyzing trace with hash -2101054792, now seen corresponding path program 1 times [2022-07-13 20:57:13,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:57:13,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034504839] [2022-07-13 20:57:13,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:57:13,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:57:13,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:57:13,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:57:13,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:57:13,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034504839] [2022-07-13 20:57:13,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034504839] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:57:13,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:57:13,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:57:13,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584819877] [2022-07-13 20:57:13,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:57:13,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:57:13,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:57:13,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:57:13,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:57:13,248 INFO L87 Difference]: Start difference. First operand 2362 states and 3694 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:57:13,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:57:13,281 INFO L93 Difference]: Finished difference Result 2476 states and 3874 transitions. [2022-07-13 20:57:13,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:57:13,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-07-13 20:57:13,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:57:13,290 INFO L225 Difference]: With dead ends: 2476 [2022-07-13 20:57:13,290 INFO L226 Difference]: Without dead ends: 2416 [2022-07-13 20:57:13,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:57:13,300 INFO L413 NwaCegarLoop]: 1661 mSDtfsCounter, 1524 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1524 SdHoareTripleChecker+Valid, 1754 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:57:13,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1524 Valid, 1754 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:57:13,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2416 states. [2022-07-13 20:57:13,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2416 to 2414. [2022-07-13 20:57:13,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2414 states, 2412 states have (on average 1.5659203980099503) internal successors, (3777), 2413 states have internal predecessors, (3777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:57:13,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2414 states to 2414 states and 3777 transitions. [2022-07-13 20:57:13,356 INFO L78 Accepts]: Start accepts. Automaton has 2414 states and 3777 transitions. Word has length 77 [2022-07-13 20:57:13,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:57:13,356 INFO L495 AbstractCegarLoop]: Abstraction has 2414 states and 3777 transitions. [2022-07-13 20:57:13,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:57:13,357 INFO L276 IsEmpty]: Start isEmpty. Operand 2414 states and 3777 transitions. [2022-07-13 20:57:13,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-13 20:57:13,357 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:57:13,357 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:57:13,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 20:57:13,358 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:57:13,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:57:13,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1452480302, now seen corresponding path program 1 times [2022-07-13 20:57:13,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:57:13,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297011524] [2022-07-13 20:57:13,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:57:13,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:57:13,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:57:13,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:57:13,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:57:13,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297011524] [2022-07-13 20:57:13,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297011524] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:57:13,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:57:13,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:57:13,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254184948] [2022-07-13 20:57:13,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:57:13,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:57:13,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:57:13,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:57:13,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:57:13,455 INFO L87 Difference]: Start difference. First operand 2414 states and 3777 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:57:13,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:57:13,484 INFO L93 Difference]: Finished difference Result 2626 states and 4113 transitions. [2022-07-13 20:57:13,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:57:13,484 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-07-13 20:57:13,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:57:13,492 INFO L225 Difference]: With dead ends: 2626 [2022-07-13 20:57:13,492 INFO L226 Difference]: Without dead ends: 2514 [2022-07-13 20:57:13,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:57:13,494 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 1504 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 1717 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:57:13,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 1717 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:57:13,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2514 states. [2022-07-13 20:57:13,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2514 to 2512. [2022-07-13 20:57:13,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2512 states, 2510 states have (on average 1.5665338645418327) internal successors, (3932), 2511 states have internal predecessors, (3932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:57:13,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2512 states to 2512 states and 3932 transitions. [2022-07-13 20:57:13,536 INFO L78 Accepts]: Start accepts. Automaton has 2512 states and 3932 transitions. Word has length 77 [2022-07-13 20:57:13,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:57:13,539 INFO L495 AbstractCegarLoop]: Abstraction has 2512 states and 3932 transitions. [2022-07-13 20:57:13,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:57:13,540 INFO L276 IsEmpty]: Start isEmpty. Operand 2512 states and 3932 transitions. [2022-07-13 20:57:13,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-13 20:57:13,540 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:57:13,541 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:57:13,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 20:57:13,541 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:57:13,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:57:13,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1624501596, now seen corresponding path program 1 times [2022-07-13 20:57:13,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:57:13,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711243272] [2022-07-13 20:57:13,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:57:13,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:57:13,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:57:13,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:57:13,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:57:13,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711243272] [2022-07-13 20:57:13,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711243272] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:57:13,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:57:13,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 20:57:13,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764485144] [2022-07-13 20:57:13,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:57:13,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 20:57:13,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:57:13,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 20:57:13,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:57:13,632 INFO L87 Difference]: Start difference. First operand 2512 states and 3932 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:57:13,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:57:13,897 INFO L93 Difference]: Finished difference Result 5032 states and 7928 transitions. [2022-07-13 20:57:13,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 20:57:13,897 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-07-13 20:57:13,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:57:13,912 INFO L225 Difference]: With dead ends: 5032 [2022-07-13 20:57:13,912 INFO L226 Difference]: Without dead ends: 4822 [2022-07-13 20:57:13,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2022-07-13 20:57:13,915 INFO L413 NwaCegarLoop]: 1574 mSDtfsCounter, 10491 mSDsluCounter, 1191 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10491 SdHoareTripleChecker+Valid, 2765 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 20:57:13,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10491 Valid, 2765 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 20:57:13,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4822 states. [2022-07-13 20:57:13,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4822 to 2720. [2022-07-13 20:57:13,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2720 states, 2718 states have (on average 1.5658572479764532) internal successors, (4256), 2719 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:57:13,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2720 states to 2720 states and 4256 transitions. [2022-07-13 20:57:13,985 INFO L78 Accepts]: Start accepts. Automaton has 2720 states and 4256 transitions. Word has length 77 [2022-07-13 20:57:13,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:57:13,986 INFO L495 AbstractCegarLoop]: Abstraction has 2720 states and 4256 transitions. [2022-07-13 20:57:13,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:57:13,986 INFO L276 IsEmpty]: Start isEmpty. Operand 2720 states and 4256 transitions. [2022-07-13 20:57:13,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-13 20:57:13,987 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:57:13,987 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] [2022-07-13 20:57:13,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 20:57:13,987 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:57:13,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:57:13,988 INFO L85 PathProgramCache]: Analyzing trace with hash 806369108, now seen corresponding path program 1 times [2022-07-13 20:57:13,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:57:13,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483665776] [2022-07-13 20:57:13,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:57:13,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:57:14,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:57:14,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:57:14,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:57:14,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483665776] [2022-07-13 20:57:14,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483665776] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:57:14,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:57:14,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:57:14,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183123643] [2022-07-13 20:57:14,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:57:14,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:57:14,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:57:14,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:57:14,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:57:14,020 INFO L87 Difference]: Start difference. First operand 2720 states and 4256 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 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) [2022-07-13 20:57:14,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:57:14,069 INFO L93 Difference]: Finished difference Result 3340 states and 5228 transitions. [2022-07-13 20:57:14,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:57:14,070 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 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 [2022-07-13 20:57:14,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:57:14,078 INFO L225 Difference]: With dead ends: 3340 [2022-07-13 20:57:14,078 INFO L226 Difference]: Without dead ends: 2922 [2022-07-13 20:57:14,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:57:14,080 INFO L413 NwaCegarLoop]: 1585 mSDtfsCounter, 1496 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 1675 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:57:14,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 1675 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:57:14,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2922 states. [2022-07-13 20:57:14,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2922 to 2920. [2022-07-13 20:57:14,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2920 states, 2918 states have (on average 1.5640849897189857) internal successors, (4564), 2919 states have internal predecessors, (4564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:57:14,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2920 states to 2920 states and 4564 transitions. [2022-07-13 20:57:14,152 INFO L78 Accepts]: Start accepts. Automaton has 2920 states and 4564 transitions. Word has length 79 [2022-07-13 20:57:14,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:57:14,153 INFO L495 AbstractCegarLoop]: Abstraction has 2920 states and 4564 transitions. [2022-07-13 20:57:14,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 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) [2022-07-13 20:57:14,153 INFO L276 IsEmpty]: Start isEmpty. Operand 2920 states and 4564 transitions. [2022-07-13 20:57:14,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-13 20:57:14,154 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:57:14,154 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] [2022-07-13 20:57:14,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 20:57:14,154 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:57:14,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:57:14,155 INFO L85 PathProgramCache]: Analyzing trace with hash 872862620, now seen corresponding path program 1 times [2022-07-13 20:57:14,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:57:14,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135631378] [2022-07-13 20:57:14,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:57:14,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:57:14,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:57:14,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:57:14,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:57:14,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135631378] [2022-07-13 20:57:14,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135631378] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:57:14,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:57:14,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 20:57:14,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144298261] [2022-07-13 20:57:14,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:57:14,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 20:57:14,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:57:14,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 20:57:14,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:57:14,325 INFO L87 Difference]: Start difference. First operand 2920 states and 4564 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 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) [2022-07-13 20:57:14,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:57:14,536 INFO L93 Difference]: Finished difference Result 3538 states and 5528 transitions. [2022-07-13 20:57:14,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 20:57:14,537 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 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 [2022-07-13 20:57:14,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:57:14,545 INFO L225 Difference]: With dead ends: 3538 [2022-07-13 20:57:14,545 INFO L226 Difference]: Without dead ends: 2922 [2022-07-13 20:57:14,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2022-07-13 20:57:14,548 INFO L413 NwaCegarLoop]: 1597 mSDtfsCounter, 3281 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3281 SdHoareTripleChecker+Valid, 2067 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:57:14,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3281 Valid, 2067 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:57:14,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2922 states. [2022-07-13 20:57:14,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2922 to 2920. [2022-07-13 20:57:14,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2920 states, 2918 states have (on average 1.5620287868403016) internal successors, (4558), 2919 states have internal predecessors, (4558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:57:14,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2920 states to 2920 states and 4558 transitions. [2022-07-13 20:57:14,670 INFO L78 Accepts]: Start accepts. Automaton has 2920 states and 4558 transitions. Word has length 79 [2022-07-13 20:57:14,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:57:14,670 INFO L495 AbstractCegarLoop]: Abstraction has 2920 states and 4558 transitions. [2022-07-13 20:57:14,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 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) [2022-07-13 20:57:14,671 INFO L276 IsEmpty]: Start isEmpty. Operand 2920 states and 4558 transitions. [2022-07-13 20:57:14,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-13 20:57:14,672 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:57:14,672 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] [2022-07-13 20:57:14,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 20:57:14,672 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:57:14,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:57:14,673 INFO L85 PathProgramCache]: Analyzing trace with hash -385682984, now seen corresponding path program 1 times [2022-07-13 20:57:14,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:57:14,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018464276] [2022-07-13 20:57:14,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:57:14,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:57:14,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:57:14,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:57:14,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:57:14,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018464276] [2022-07-13 20:57:14,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018464276] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:57:14,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:57:14,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:57:14,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630999762] [2022-07-13 20:57:14,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:57:14,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:57:14,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:57:14,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:57:14,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:57:14,707 INFO L87 Difference]: Start difference. First operand 2920 states and 4558 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 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) [2022-07-13 20:57:14,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:57:14,804 INFO L93 Difference]: Finished difference Result 4080 states and 6352 transitions. [2022-07-13 20:57:14,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:57:14,804 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 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 [2022-07-13 20:57:14,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:57:14,814 INFO L225 Difference]: With dead ends: 4080 [2022-07-13 20:57:14,814 INFO L226 Difference]: Without dead ends: 3464 [2022-07-13 20:57:14,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:57:14,816 INFO L413 NwaCegarLoop]: 1617 mSDtfsCounter, 1508 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1508 SdHoareTripleChecker+Valid, 1726 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:57:14,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1508 Valid, 1726 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:57:14,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3464 states. [2022-07-13 20:57:14,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3464 to 3462. [2022-07-13 20:57:14,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3462 states, 3460 states have (on average 1.5554913294797688) internal successors, (5382), 3461 states have internal predecessors, (5382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:57:14,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3462 states to 3462 states and 5382 transitions. [2022-07-13 20:57:14,941 INFO L78 Accepts]: Start accepts. Automaton has 3462 states and 5382 transitions. Word has length 79 [2022-07-13 20:57:14,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:57:14,942 INFO L495 AbstractCegarLoop]: Abstraction has 3462 states and 5382 transitions. [2022-07-13 20:57:14,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 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) [2022-07-13 20:57:14,942 INFO L276 IsEmpty]: Start isEmpty. Operand 3462 states and 5382 transitions. [2022-07-13 20:57:14,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-13 20:57:14,943 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:57:14,943 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] [2022-07-13 20:57:14,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 20:57:14,943 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:57:14,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:57:14,944 INFO L85 PathProgramCache]: Analyzing trace with hash -111995272, now seen corresponding path program 1 times [2022-07-13 20:57:14,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:57:14,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024364246] [2022-07-13 20:57:14,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:57:14,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:57:14,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:57:14,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:57:14,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:57:14,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024364246] [2022-07-13 20:57:14,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024364246] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:57:14,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:57:14,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:57:14,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981595130] [2022-07-13 20:57:14,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:57:14,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:57:14,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:57:14,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:57:14,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:57:14,974 INFO L87 Difference]: Start difference. First operand 3462 states and 5382 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 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) [2022-07-13 20:57:15,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:57:15,140 INFO L93 Difference]: Finished difference Result 5634 states and 8704 transitions. [2022-07-13 20:57:15,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:57:15,141 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 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 [2022-07-13 20:57:15,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:57:15,150 INFO L225 Difference]: With dead ends: 5634 [2022-07-13 20:57:15,151 INFO L226 Difference]: Without dead ends: 4476 [2022-07-13 20:57:15,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:57:15,154 INFO L413 NwaCegarLoop]: 1630 mSDtfsCounter, 1512 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 1735 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:57:15,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1512 Valid, 1735 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:57:15,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4476 states. [2022-07-13 20:57:15,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4476 to 4474. [2022-07-13 20:57:15,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4474 states, 4472 states have (on average 1.5424865831842576) internal successors, (6898), 4473 states have internal predecessors, (6898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:57:15,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4474 states to 4474 states and 6898 transitions. [2022-07-13 20:57:15,337 INFO L78 Accepts]: Start accepts. Automaton has 4474 states and 6898 transitions. Word has length 79 [2022-07-13 20:57:15,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:57:15,337 INFO L495 AbstractCegarLoop]: Abstraction has 4474 states and 6898 transitions. [2022-07-13 20:57:15,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 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) [2022-07-13 20:57:15,338 INFO L276 IsEmpty]: Start isEmpty. Operand 4474 states and 6898 transitions. [2022-07-13 20:57:15,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-13 20:57:15,338 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:57:15,339 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] [2022-07-13 20:57:15,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 20:57:15,339 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:57:15,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:57:15,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1707076376, now seen corresponding path program 1 times [2022-07-13 20:57:15,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:57:15,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627291665] [2022-07-13 20:57:15,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:57:15,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:57:15,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:57:15,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:57:15,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:57:15,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627291665] [2022-07-13 20:57:15,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627291665] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:57:15,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:57:15,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:57:15,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15413993] [2022-07-13 20:57:15,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:57:15,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:57:15,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:57:15,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:57:15,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:57:15,368 INFO L87 Difference]: Start difference. First operand 4474 states and 6898 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 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) [2022-07-13 20:57:15,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:57:15,637 INFO L93 Difference]: Finished difference Result 8526 states and 13012 transitions. [2022-07-13 20:57:15,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:57:15,638 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 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 [2022-07-13 20:57:15,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:57:15,651 INFO L225 Difference]: With dead ends: 8526 [2022-07-13 20:57:15,651 INFO L226 Difference]: Without dead ends: 6356 [2022-07-13 20:57:15,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:57:15,656 INFO L413 NwaCegarLoop]: 1643 mSDtfsCounter, 1516 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 1744 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:57:15,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1516 Valid, 1744 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:57:15,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6356 states. [2022-07-13 20:57:15,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6356 to 6354. [2022-07-13 20:57:15,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6354 states, 6352 states have (on average 1.5217254408060454) internal successors, (9666), 6353 states have internal predecessors, (9666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:57:15,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6354 states to 6354 states and 9666 transitions. [2022-07-13 20:57:15,923 INFO L78 Accepts]: Start accepts. Automaton has 6354 states and 9666 transitions. Word has length 79 [2022-07-13 20:57:15,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:57:15,923 INFO L495 AbstractCegarLoop]: Abstraction has 6354 states and 9666 transitions. [2022-07-13 20:57:15,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 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) [2022-07-13 20:57:15,924 INFO L276 IsEmpty]: Start isEmpty. Operand 6354 states and 9666 transitions. [2022-07-13 20:57:15,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-13 20:57:15,925 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:57:15,925 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] [2022-07-13 20:57:15,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 20:57:15,925 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:57:15,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:57:15,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1886482360, now seen corresponding path program 1 times [2022-07-13 20:57:15,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:57:15,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543855567] [2022-07-13 20:57:15,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:57:15,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:57:15,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:57:15,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:57:15,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:57:15,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543855567] [2022-07-13 20:57:15,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543855567] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:57:15,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:57:15,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:57:15,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016525838] [2022-07-13 20:57:15,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:57:15,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:57:15,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:57:15,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:57:15,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:57:15,953 INFO L87 Difference]: Start difference. First operand 6354 states and 9666 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 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) [2022-07-13 20:57:16,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:57:16,391 INFO L93 Difference]: Finished difference Result 13878 states and 20836 transitions. [2022-07-13 20:57:16,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:57:16,392 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 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 [2022-07-13 20:57:16,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:57:16,409 INFO L225 Difference]: With dead ends: 13878 [2022-07-13 20:57:16,409 INFO L226 Difference]: Without dead ends: 9828 [2022-07-13 20:57:16,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:57:16,417 INFO L413 NwaCegarLoop]: 1656 mSDtfsCounter, 1520 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1520 SdHoareTripleChecker+Valid, 1753 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:57:16,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1520 Valid, 1753 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:57:16,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9828 states. [2022-07-13 20:57:16,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9828 to 9826. [2022-07-13 20:57:16,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9826 states, 9824 states have (on average 1.4936889250814331) internal successors, (14674), 9825 states have internal predecessors, (14674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:57:16,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9826 states to 9826 states and 14674 transitions. [2022-07-13 20:57:16,951 INFO L78 Accepts]: Start accepts. Automaton has 9826 states and 14674 transitions. Word has length 79 [2022-07-13 20:57:16,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:57:16,951 INFO L495 AbstractCegarLoop]: Abstraction has 9826 states and 14674 transitions. [2022-07-13 20:57:16,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 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) [2022-07-13 20:57:16,951 INFO L276 IsEmpty]: Start isEmpty. Operand 9826 states and 14674 transitions. [2022-07-13 20:57:16,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-13 20:57:16,952 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:57:16,952 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] [2022-07-13 20:57:16,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 20:57:16,953 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:57:16,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:57:16,953 INFO L85 PathProgramCache]: Analyzing trace with hash 874214487, now seen corresponding path program 1 times [2022-07-13 20:57:16,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:57:16,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139608919] [2022-07-13 20:57:16,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:57:16,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:57:16,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:57:17,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:57:17,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:57:17,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139608919] [2022-07-13 20:57:17,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139608919] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:57:17,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:57:17,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 20:57:17,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675418501] [2022-07-13 20:57:17,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:57:17,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 20:57:17,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:57:17,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 20:57:17,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:57:17,014 INFO L87 Difference]: Start difference. First operand 9826 states and 14674 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 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) [2022-07-13 20:57:18,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:57:18,090 INFO L93 Difference]: Finished difference Result 16289 states and 23945 transitions. [2022-07-13 20:57:18,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 20:57:18,091 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 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 [2022-07-13 20:57:18,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:57:18,119 INFO L225 Difference]: With dead ends: 16289 [2022-07-13 20:57:18,119 INFO L226 Difference]: Without dead ends: 16287 [2022-07-13 20:57:18,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-07-13 20:57:18,124 INFO L413 NwaCegarLoop]: 1609 mSDtfsCounter, 730 mSDsluCounter, 9164 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 10773 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:57:18,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 10773 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:57:18,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16287 states. [2022-07-13 20:57:18,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16287 to 10210. [2022-07-13 20:57:18,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10210 states, 10208 states have (on average 1.4719827586206897) internal successors, (15026), 10209 states have internal predecessors, (15026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:57:18,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10210 states to 10210 states and 15026 transitions. [2022-07-13 20:57:18,710 INFO L78 Accepts]: Start accepts. Automaton has 10210 states and 15026 transitions. Word has length 80 [2022-07-13 20:57:18,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:57:18,710 INFO L495 AbstractCegarLoop]: Abstraction has 10210 states and 15026 transitions. [2022-07-13 20:57:18,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 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) [2022-07-13 20:57:18,711 INFO L276 IsEmpty]: Start isEmpty. Operand 10210 states and 15026 transitions. [2022-07-13 20:57:18,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-13 20:57:18,715 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:57:18,715 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:57:18,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 20:57:18,716 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:57:18,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:57:18,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1411161737, now seen corresponding path program 1 times [2022-07-13 20:57:18,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:57:18,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395234722] [2022-07-13 20:57:18,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:57:18,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:57:18,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:57:18,782 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-13 20:57:18,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:57:18,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395234722] [2022-07-13 20:57:18,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395234722] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:57:18,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:57:18,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 20:57:18,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923643802] [2022-07-13 20:57:18,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:57:18,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 20:57:18,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:57:18,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 20:57:18,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:57:18,785 INFO L87 Difference]: Start difference. First operand 10210 states and 15026 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:57:21,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:57:21,847 INFO L93 Difference]: Finished difference Result 59216 states and 85737 transitions. [2022-07-13 20:57:21,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 20:57:21,847 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 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 112 [2022-07-13 20:57:21,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:57:21,951 INFO L225 Difference]: With dead ends: 59216 [2022-07-13 20:57:21,952 INFO L226 Difference]: Without dead ends: 51310 [2022-07-13 20:57:21,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-07-13 20:57:21,971 INFO L413 NwaCegarLoop]: 1665 mSDtfsCounter, 8615 mSDsluCounter, 2152 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8615 SdHoareTripleChecker+Valid, 3817 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 20:57:21,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8615 Valid, 3817 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 20:57:22,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51310 states. [2022-07-13 20:57:23,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51310 to 18114. [2022-07-13 20:57:23,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18114 states, 18112 states have (on average 1.4550574204946995) internal successors, (26354), 18113 states have internal predecessors, (26354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:57:23,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18114 states to 18114 states and 26354 transitions. [2022-07-13 20:57:23,314 INFO L78 Accepts]: Start accepts. Automaton has 18114 states and 26354 transitions. Word has length 112 [2022-07-13 20:57:23,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:57:23,314 INFO L495 AbstractCegarLoop]: Abstraction has 18114 states and 26354 transitions. [2022-07-13 20:57:23,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:57:23,314 INFO L276 IsEmpty]: Start isEmpty. Operand 18114 states and 26354 transitions. [2022-07-13 20:57:23,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-13 20:57:23,319 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:57:23,320 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:57:23,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 20:57:23,320 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:57:23,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:57:23,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1381639519, now seen corresponding path program 1 times [2022-07-13 20:57:23,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:57:23,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857811528] [2022-07-13 20:57:23,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:57:23,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:57:23,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:57:23,384 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 20:57:23,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:57:23,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857811528] [2022-07-13 20:57:23,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857811528] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:57:23,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:57:23,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 20:57:23,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832944306] [2022-07-13 20:57:23,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:57:23,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 20:57:23,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:57:23,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 20:57:23,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:57:23,386 INFO L87 Difference]: Start difference. First operand 18114 states and 26354 transitions. Second operand has 8 states, 8 states have (on average 12.25) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:57:27,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:57:27,428 INFO L93 Difference]: Finished difference Result 67120 states and 97065 transitions. [2022-07-13 20:57:27,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 20:57:27,429 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2022-07-13 20:57:27,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:57:27,526 INFO L225 Difference]: With dead ends: 67120 [2022-07-13 20:57:27,527 INFO L226 Difference]: Without dead ends: 59214 [2022-07-13 20:57:27,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-07-13 20:57:27,552 INFO L413 NwaCegarLoop]: 1665 mSDtfsCounter, 8442 mSDsluCounter, 2197 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8442 SdHoareTripleChecker+Valid, 3862 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 20:57:27,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8442 Valid, 3862 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 20:57:27,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59214 states. [2022-07-13 20:57:30,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59214 to 29986. [2022-07-13 20:57:30,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29986 states, 29984 states have (on average 1.442969583778015) internal successors, (43266), 29985 states have internal predecessors, (43266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:57:30,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29986 states to 29986 states and 43266 transitions. [2022-07-13 20:57:30,137 INFO L78 Accepts]: Start accepts. Automaton has 29986 states and 43266 transitions. Word has length 112 [2022-07-13 20:57:30,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:57:30,137 INFO L495 AbstractCegarLoop]: Abstraction has 29986 states and 43266 transitions. [2022-07-13 20:57:30,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:57:30,137 INFO L276 IsEmpty]: Start isEmpty. Operand 29986 states and 43266 transitions. [2022-07-13 20:57:30,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-13 20:57:30,143 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:57:30,144 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:57:30,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 20:57:30,144 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:57:30,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:57:30,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1107951807, now seen corresponding path program 1 times [2022-07-13 20:57:30,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:57:30,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975247495] [2022-07-13 20:57:30,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:57:30,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:57:30,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:57:30,215 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 20:57:30,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:57:30,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975247495] [2022-07-13 20:57:30,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975247495] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:57:30,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:57:30,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 20:57:30,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697332002] [2022-07-13 20:57:30,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:57:30,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 20:57:30,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:57:30,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 20:57:30,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:57:30,219 INFO L87 Difference]: Start difference. First operand 29986 states and 43266 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:57:35,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:57:35,162 INFO L93 Difference]: Finished difference Result 75024 states and 108393 transitions. [2022-07-13 20:57:35,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 20:57:35,163 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2022-07-13 20:57:35,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:57:35,259 INFO L225 Difference]: With dead ends: 75024 [2022-07-13 20:57:35,259 INFO L226 Difference]: Without dead ends: 67118 [2022-07-13 20:57:35,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-07-13 20:57:35,281 INFO L413 NwaCegarLoop]: 1665 mSDtfsCounter, 8408 mSDsluCounter, 2256 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8408 SdHoareTripleChecker+Valid, 3921 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 20:57:35,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8408 Valid, 3921 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 20:57:35,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67118 states. [2022-07-13 20:57:38,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67118 to 37890. [2022-07-13 20:57:38,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37890 states, 37888 states have (on average 1.4409311655405406) internal successors, (54594), 37889 states have internal predecessors, (54594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:57:38,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37890 states to 37890 states and 54594 transitions. [2022-07-13 20:57:38,244 INFO L78 Accepts]: Start accepts. Automaton has 37890 states and 54594 transitions. Word has length 112 [2022-07-13 20:57:38,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:57:38,244 INFO L495 AbstractCegarLoop]: Abstraction has 37890 states and 54594 transitions. [2022-07-13 20:57:38,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:57:38,245 INFO L276 IsEmpty]: Start isEmpty. Operand 37890 states and 54594 transitions. [2022-07-13 20:57:38,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-13 20:57:38,253 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:57:38,253 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:57:38,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 20:57:38,253 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:57:38,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:57:38,254 INFO L85 PathProgramCache]: Analyzing trace with hash 711119841, now seen corresponding path program 1 times [2022-07-13 20:57:38,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:57:38,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691261248] [2022-07-13 20:57:38,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:57:38,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:57:38,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:57:38,319 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-13 20:57:38,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:57:38,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691261248] [2022-07-13 20:57:38,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691261248] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:57:38,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:57:38,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 20:57:38,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558414865] [2022-07-13 20:57:38,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:57:38,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 20:57:38,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:57:38,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 20:57:38,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:57:38,322 INFO L87 Difference]: Start difference. First operand 37890 states and 54594 transitions. Second operand has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:57:44,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:57:44,262 INFO L93 Difference]: Finished difference Result 82928 states and 119721 transitions. [2022-07-13 20:57:44,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 20:57:44,263 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 0 states have call successors, (0), 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 112 [2022-07-13 20:57:44,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:57:44,360 INFO L225 Difference]: With dead ends: 82928 [2022-07-13 20:57:44,360 INFO L226 Difference]: Without dead ends: 75022 [2022-07-13 20:57:44,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-07-13 20:57:44,385 INFO L413 NwaCegarLoop]: 1665 mSDtfsCounter, 8478 mSDsluCounter, 2253 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8478 SdHoareTripleChecker+Valid, 3918 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 20:57:44,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8478 Valid, 3918 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 20:57:44,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75022 states. [2022-07-13 20:57:48,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75022 to 45794. [2022-07-13 20:57:48,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45794 states, 45792 states have (on average 1.4395964360587001) internal successors, (65922), 45793 states have internal predecessors, (65922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:57:48,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45794 states to 45794 states and 65922 transitions. [2022-07-13 20:57:48,353 INFO L78 Accepts]: Start accepts. Automaton has 45794 states and 65922 transitions. Word has length 112 [2022-07-13 20:57:48,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:57:48,353 INFO L495 AbstractCegarLoop]: Abstraction has 45794 states and 65922 transitions. [2022-07-13 20:57:48,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:57:48,354 INFO L276 IsEmpty]: Start isEmpty. Operand 45794 states and 65922 transitions. [2022-07-13 20:57:48,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-13 20:57:48,362 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:57:48,362 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:57:48,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 20:57:48,363 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:57:48,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:57:48,363 INFO L85 PathProgramCache]: Analyzing trace with hash 890525825, now seen corresponding path program 1 times [2022-07-13 20:57:48,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:57:48,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100575743] [2022-07-13 20:57:48,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:57:48,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:57:48,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:57:48,417 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 20:57:48,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:57:48,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100575743] [2022-07-13 20:57:48,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100575743] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:57:48,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:57:48,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 20:57:48,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682051829] [2022-07-13 20:57:48,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:57:48,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 20:57:48,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:57:48,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 20:57:48,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:57:48,419 INFO L87 Difference]: Start difference. First operand 45794 states and 65922 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:57:55,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:57:55,470 INFO L93 Difference]: Finished difference Result 90832 states and 131049 transitions. [2022-07-13 20:57:55,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 20:57:55,471 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 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 112 [2022-07-13 20:57:55,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:57:55,588 INFO L225 Difference]: With dead ends: 90832 [2022-07-13 20:57:55,588 INFO L226 Difference]: Without dead ends: 82926 [2022-07-13 20:57:55,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-07-13 20:57:55,621 INFO L413 NwaCegarLoop]: 1666 mSDtfsCounter, 8580 mSDsluCounter, 2264 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8580 SdHoareTripleChecker+Valid, 3930 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 20:57:55,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8580 Valid, 3930 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 20:57:55,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82926 states. [2022-07-13 20:58:00,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82926 to 53698. [2022-07-13 20:58:00,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53698 states, 53696 states have (on average 1.4386546483909417) internal successors, (77250), 53697 states have internal predecessors, (77250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:58:00,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53698 states to 53698 states and 77250 transitions. [2022-07-13 20:58:00,864 INFO L78 Accepts]: Start accepts. Automaton has 53698 states and 77250 transitions. Word has length 112 [2022-07-13 20:58:00,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:58:00,864 INFO L495 AbstractCegarLoop]: Abstraction has 53698 states and 77250 transitions. [2022-07-13 20:58:00,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:58:00,864 INFO L276 IsEmpty]: Start isEmpty. Operand 53698 states and 77250 transitions. [2022-07-13 20:58:00,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-13 20:58:00,874 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:58:00,874 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:58:00,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 20:58:00,874 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:58:00,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:58:00,875 INFO L85 PathProgramCache]: Analyzing trace with hash -420877289, now seen corresponding path program 1 times [2022-07-13 20:58:00,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:58:00,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259308193] [2022-07-13 20:58:00,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:58:00,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:58:00,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:58:00,934 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 20:58:00,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:58:00,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259308193] [2022-07-13 20:58:00,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259308193] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:58:00,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:58:00,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 20:58:00,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085337950] [2022-07-13 20:58:00,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:58:00,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 20:58:00,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:58:00,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 20:58:00,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:58:00,936 INFO L87 Difference]: Start difference. First operand 53698 states and 77250 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:58:09,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:58:09,346 INFO L93 Difference]: Finished difference Result 93936 states and 135529 transitions. [2022-07-13 20:58:09,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 20:58:09,346 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 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 112 [2022-07-13 20:58:09,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:58:09,461 INFO L225 Difference]: With dead ends: 93936 [2022-07-13 20:58:09,461 INFO L226 Difference]: Without dead ends: 88430 [2022-07-13 20:58:09,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-07-13 20:58:09,482 INFO L413 NwaCegarLoop]: 1663 mSDtfsCounter, 8579 mSDsluCounter, 2170 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8579 SdHoareTripleChecker+Valid, 3833 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 20:58:09,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8579 Valid, 3833 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 20:58:09,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88430 states. [2022-07-13 20:58:15,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88430 to 59202. [2022-07-13 20:58:15,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59202 states, 59200 states have (on average 1.4389527027027027) internal successors, (85186), 59201 states have internal predecessors, (85186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:58:15,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59202 states to 59202 states and 85186 transitions. [2022-07-13 20:58:15,724 INFO L78 Accepts]: Start accepts. Automaton has 59202 states and 85186 transitions. Word has length 112 [2022-07-13 20:58:15,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:58:15,724 INFO L495 AbstractCegarLoop]: Abstraction has 59202 states and 85186 transitions. [2022-07-13 20:58:15,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:58:15,724 INFO L276 IsEmpty]: Start isEmpty. Operand 59202 states and 85186 transitions. [2022-07-13 20:58:15,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-13 20:58:15,736 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:58:15,736 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:58:15,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 20:58:15,736 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:58:15,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:58:15,737 INFO L85 PathProgramCache]: Analyzing trace with hash 746098925, now seen corresponding path program 1 times [2022-07-13 20:58:15,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:58:15,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663723512] [2022-07-13 20:58:15,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:58:15,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:58:15,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:58:15,776 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:58:15,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:58:15,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663723512] [2022-07-13 20:58:15,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663723512] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:58:15,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:58:15,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:58:15,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739914610] [2022-07-13 20:58:15,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:58:15,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:58:15,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:58:15,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:58:15,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:58:15,779 INFO L87 Difference]: Start difference. First operand 59202 states and 85186 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:58:21,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:58:21,387 INFO L93 Difference]: Finished difference Result 116102 states and 166772 transitions. [2022-07-13 20:58:21,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:58:21,387 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2022-07-13 20:58:21,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:58:21,465 INFO L225 Difference]: With dead ends: 116102 [2022-07-13 20:58:21,465 INFO L226 Difference]: Without dead ends: 59204 [2022-07-13 20:58:21,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:58:21,495 INFO L413 NwaCegarLoop]: 1625 mSDtfsCounter, 60 mSDsluCounter, 1567 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 3192 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:58:21,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 3192 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:58:21,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59204 states. [2022-07-13 20:58:27,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59204 to 59202. [2022-07-13 20:58:27,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59202 states, 59200 states have (on average 1.427331081081081) internal successors, (84498), 59201 states have internal predecessors, (84498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:58:27,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59202 states to 59202 states and 84498 transitions. [2022-07-13 20:58:27,838 INFO L78 Accepts]: Start accepts. Automaton has 59202 states and 84498 transitions. Word has length 113 [2022-07-13 20:58:27,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:58:27,838 INFO L495 AbstractCegarLoop]: Abstraction has 59202 states and 84498 transitions. [2022-07-13 20:58:27,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:58:27,838 INFO L276 IsEmpty]: Start isEmpty. Operand 59202 states and 84498 transitions. [2022-07-13 20:58:27,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-13 20:58:27,844 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:58:27,844 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:58:27,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 20:58:27,844 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:58:27,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:58:27,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1169646557, now seen corresponding path program 1 times [2022-07-13 20:58:27,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:58:27,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288242932] [2022-07-13 20:58:27,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:58:27,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:58:27,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:58:27,892 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:58:27,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:58:27,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288242932] [2022-07-13 20:58:27,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288242932] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:58:27,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:58:27,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:58:27,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961824727] [2022-07-13 20:58:27,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:58:27,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:58:27,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:58:27,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:58:27,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:58:27,894 INFO L87 Difference]: Start difference. First operand 59202 states and 84498 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:58:31,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:58:31,016 INFO L93 Difference]: Finished difference Result 87654 states and 124948 transitions. [2022-07-13 20:58:31,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:58:31,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2022-07-13 20:58:31,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:58:31,053 INFO L225 Difference]: With dead ends: 87654 [2022-07-13 20:58:31,053 INFO L226 Difference]: Without dead ends: 30756 [2022-07-13 20:58:31,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:58:31,087 INFO L413 NwaCegarLoop]: 1618 mSDtfsCounter, 56 mSDsluCounter, 1559 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 3177 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:58:31,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 3177 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:58:31,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30756 states. [2022-07-13 20:58:34,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30756 to 30754. [2022-07-13 20:58:34,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30754 states, 30752 states have (on average 1.4212408949011446) internal successors, (43706), 30753 states have internal predecessors, (43706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:58:34,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30754 states to 30754 states and 43706 transitions. [2022-07-13 20:58:34,185 INFO L78 Accepts]: Start accepts. Automaton has 30754 states and 43706 transitions. Word has length 113 [2022-07-13 20:58:34,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:58:34,185 INFO L495 AbstractCegarLoop]: Abstraction has 30754 states and 43706 transitions. [2022-07-13 20:58:34,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:58:34,185 INFO L276 IsEmpty]: Start isEmpty. Operand 30754 states and 43706 transitions. [2022-07-13 20:58:34,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-13 20:58:34,188 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:58:34,189 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:58:34,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-13 20:58:34,189 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:58:34,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:58:34,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1209709145, now seen corresponding path program 1 times [2022-07-13 20:58:34,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:58:34,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513843659] [2022-07-13 20:58:34,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:58:34,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:58:34,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:58:34,219 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:58:34,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:58:34,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513843659] [2022-07-13 20:58:34,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513843659] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:58:34,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:58:34,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:58:34,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267867712] [2022-07-13 20:58:34,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:58:34,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:58:34,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:58:34,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:58:34,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:58:34,221 INFO L87 Difference]: Start difference. First operand 30754 states and 43706 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:58:35,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:58:35,736 INFO L93 Difference]: Finished difference Result 44982 states and 63760 transitions. [2022-07-13 20:58:35,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:58:35,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2022-07-13 20:58:35,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:58:35,755 INFO L225 Difference]: With dead ends: 44982 [2022-07-13 20:58:35,755 INFO L226 Difference]: Without dead ends: 16532 [2022-07-13 20:58:35,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:58:35,771 INFO L413 NwaCegarLoop]: 1611 mSDtfsCounter, 52 mSDsluCounter, 1551 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 3162 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:58:35,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 3162 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:58:35,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16532 states. [2022-07-13 20:58:37,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16532 to 16530. [2022-07-13 20:58:37,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16530 states, 16528 states have (on average 1.4207405614714423) internal successors, (23482), 16529 states have internal predecessors, (23482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:58:37,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16530 states to 16530 states and 23482 transitions. [2022-07-13 20:58:37,539 INFO L78 Accepts]: Start accepts. Automaton has 16530 states and 23482 transitions. Word has length 113 [2022-07-13 20:58:37,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:58:37,539 INFO L495 AbstractCegarLoop]: Abstraction has 16530 states and 23482 transitions. [2022-07-13 20:58:37,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:58:37,539 INFO L276 IsEmpty]: Start isEmpty. Operand 16530 states and 23482 transitions. [2022-07-13 20:58:37,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-13 20:58:37,541 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:58:37,541 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:58:37,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-13 20:58:37,541 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:58:37,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:58:37,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1498655857, now seen corresponding path program 1 times [2022-07-13 20:58:37,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:58:37,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096632768] [2022-07-13 20:58:37,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:58:37,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:58:37,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:58:37,569 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:58:37,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:58:37,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096632768] [2022-07-13 20:58:37,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096632768] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:58:37,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:58:37,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:58:37,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457595454] [2022-07-13 20:58:37,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:58:37,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:58:37,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:58:37,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:58:37,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:58:37,571 INFO L87 Difference]: Start difference. First operand 16530 states and 23482 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:58:38,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:58:38,308 INFO L93 Difference]: Finished difference Result 23646 states and 33424 transitions. [2022-07-13 20:58:38,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:58:38,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2022-07-13 20:58:38,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:58:38,317 INFO L225 Difference]: With dead ends: 23646 [2022-07-13 20:58:38,318 INFO L226 Difference]: Without dead ends: 9420 [2022-07-13 20:58:38,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:58:38,325 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 48 mSDsluCounter, 1543 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 3147 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:58:38,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 3147 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:58:38,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9420 states. [2022-07-13 20:58:39,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9420 to 9418. [2022-07-13 20:58:39,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9418 states, 9416 states have (on average 1.4290569243840272) internal successors, (13456), 9417 states have internal predecessors, (13456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:58:39,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9418 states to 9418 states and 13456 transitions. [2022-07-13 20:58:39,048 INFO L78 Accepts]: Start accepts. Automaton has 9418 states and 13456 transitions. Word has length 113 [2022-07-13 20:58:39,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:58:39,048 INFO L495 AbstractCegarLoop]: Abstraction has 9418 states and 13456 transitions. [2022-07-13 20:58:39,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:58:39,048 INFO L276 IsEmpty]: Start isEmpty. Operand 9418 states and 13456 transitions. [2022-07-13 20:58:39,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-13 20:58:39,049 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:58:39,050 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:58:39,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-13 20:58:39,050 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:58:39,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:58:39,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1585774651, now seen corresponding path program 1 times [2022-07-13 20:58:39,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:58:39,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845111907] [2022-07-13 20:58:39,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:58:39,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:58:39,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:58:39,237 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:58:39,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:58:39,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845111907] [2022-07-13 20:58:39,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845111907] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 20:58:39,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434902941] [2022-07-13 20:58:39,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:58:39,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:58:39,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:58:39,239 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 20:58:39,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 20:58:39,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:58:39,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-13 20:58:39,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 20:58:39,577 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 20:58:39,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 20:58:39,865 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 20:58:39,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434902941] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 20:58:39,866 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 20:58:39,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 4] total 20 [2022-07-13 20:58:39,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779282370] [2022-07-13 20:58:39,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 20:58:39,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-13 20:58:39,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:58:39,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-13 20:58:39,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2022-07-13 20:58:39,867 INFO L87 Difference]: Start difference. First operand 9418 states and 13456 transitions. Second operand has 20 states, 20 states have (on average 16.1) internal successors, (322), 20 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:58:54,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:58:54,068 INFO L93 Difference]: Finished difference Result 97505 states and 133610 transitions. [2022-07-13 20:58:54,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2022-07-13 20:58:54,068 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 16.1) internal successors, (322), 20 states have internal predecessors, (322), 0 states have call successors, (0), 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 113 [2022-07-13 20:58:54,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:58:54,194 INFO L225 Difference]: With dead ends: 97505 [2022-07-13 20:58:54,194 INFO L226 Difference]: Without dead ends: 90391 [2022-07-13 20:58:54,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 216 SyntacticMatches, 4 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7989 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2878, Invalid=16582, Unknown=0, NotChecked=0, Total=19460 [2022-07-13 20:58:54,219 INFO L413 NwaCegarLoop]: 1689 mSDtfsCounter, 25067 mSDsluCounter, 9270 mSDsCounter, 0 mSdLazyCounter, 2521 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25067 SdHoareTripleChecker+Valid, 10959 SdHoareTripleChecker+Invalid, 2820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 2521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 20:58:54,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25067 Valid, 10959 Invalid, 2820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 2521 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 20:58:54,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90391 states. [2022-07-13 20:59:01,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90391 to 56686. [2022-07-13 20:59:01,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56686 states, 56684 states have (on average 1.3700515136546467) internal successors, (77660), 56685 states have internal predecessors, (77660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:59:01,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56686 states to 56686 states and 77660 transitions. [2022-07-13 20:59:01,222 INFO L78 Accepts]: Start accepts. Automaton has 56686 states and 77660 transitions. Word has length 113 [2022-07-13 20:59:01,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:59:01,222 INFO L495 AbstractCegarLoop]: Abstraction has 56686 states and 77660 transitions. [2022-07-13 20:59:01,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 16.1) internal successors, (322), 20 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:59:01,222 INFO L276 IsEmpty]: Start isEmpty. Operand 56686 states and 77660 transitions. [2022-07-13 20:59:01,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-13 20:59:01,225 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:59:01,225 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:59:01,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 20:59:01,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-07-13 20:59:01,426 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:59:01,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:59:01,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1540813335, now seen corresponding path program 1 times [2022-07-13 20:59:01,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:59:01,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102515023] [2022-07-13 20:59:01,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:59:01,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:59:01,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:59:01,578 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:59:01,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:59:01,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102515023] [2022-07-13 20:59:01,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102515023] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 20:59:01,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330751167] [2022-07-13 20:59:01,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:59:01,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:59:01,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:59:01,584 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 20:59:01,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 20:59:01,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:59:01,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-13 20:59:01,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 20:59:02,133 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:59:02,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 20:59:02,689 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:59:02,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330751167] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 20:59:02,690 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 20:59:02,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 29 [2022-07-13 20:59:02,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731003945] [2022-07-13 20:59:02,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 20:59:02,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-13 20:59:02,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:59:02,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-13 20:59:02,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=758, Unknown=0, NotChecked=0, Total=870 [2022-07-13 20:59:02,692 INFO L87 Difference]: Start difference. First operand 56686 states and 77660 transitions. Second operand has 30 states, 30 states have (on average 9.8) internal successors, (294), 29 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)