./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label09.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3a877d22 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.7.1.ufo.BOUNDED-14.pals+Problem12_label09.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 19716c7655e34d197f46fa451b10ae0c8c502a032fb57ff83ff50da1b9e9fcc5 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 12:09:42,067 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 12:09:42,069 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 12:09:42,103 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 12:09:42,104 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 12:09:42,108 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 12:09:42,121 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 12:09:42,124 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 12:09:42,125 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 12:09:42,130 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 12:09:42,130 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 12:09:42,132 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 12:09:42,132 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 12:09:42,134 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 12:09:42,135 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 12:09:42,140 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 12:09:42,141 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 12:09:42,142 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 12:09:42,143 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 12:09:42,148 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 12:09:42,149 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 12:09:42,149 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 12:09:42,159 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 12:09:42,160 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 12:09:42,165 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 12:09:42,166 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 12:09:42,166 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 12:09:42,167 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 12:09:42,168 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 12:09:42,168 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 12:09:42,169 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 12:09:42,169 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 12:09:42,170 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 12:09:42,170 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 12:09:42,171 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 12:09:42,171 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 12:09:42,171 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 12:09:42,172 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 12:09:42,172 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 12:09:42,172 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 12:09:42,173 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 12:09:42,174 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 12:09:42,187 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 12:09:42,188 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 12:09:42,188 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 12:09:42,188 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 12:09:42,189 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 12:09:42,189 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 12:09:42,189 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 12:09:42,189 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 12:09:42,190 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 12:09:42,190 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 12:09:42,190 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 12:09:42,190 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 12:09:42,190 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 12:09:42,190 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 12:09:42,191 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 12:09:42,191 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 12:09:42,191 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 12:09:42,191 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 12:09:42,191 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 12:09:42,191 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 12:09:42,192 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 12:09:42,192 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 12:09:42,192 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 12:09:42,192 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 12:09:42,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 12:09:42,192 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 12:09:42,192 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 12:09:42,193 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 12:09:42,193 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 12:09:42,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 12:09:42,193 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 12:09:42,193 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 12:09:42,193 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 12:09:42,194 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 12:09:42,194 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 19716c7655e34d197f46fa451b10ae0c8c502a032fb57ff83ff50da1b9e9fcc5 [2021-12-15 12:09:42,350 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 12:09:42,405 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 12:09:42,408 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 12:09:42,409 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 12:09:42,411 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 12:09:42,412 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label09.c [2021-12-15 12:09:42,475 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/808a2bf38/08fd9e83769f40d79b436a5f99260fb2/FLAG41ea18ae4 [2021-12-15 12:09:43,086 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 12:09:43,087 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label09.c [2021-12-15 12:09:43,118 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/808a2bf38/08fd9e83769f40d79b436a5f99260fb2/FLAG41ea18ae4 [2021-12-15 12:09:43,281 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/808a2bf38/08fd9e83769f40d79b436a5f99260fb2 [2021-12-15 12:09:43,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 12:09:43,286 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 12:09:43,289 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 12:09:43,290 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 12:09:43,293 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 12:09:43,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:09:43" (1/1) ... [2021-12-15 12:09:43,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d871c8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:09:43, skipping insertion in model container [2021-12-15 12:09:43,295 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:09:43" (1/1) ... [2021-12-15 12:09:43,301 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 12:09:43,436 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 12:09:43,777 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.7.1.ufo.BOUNDED-14.pals+Problem12_label09.c[20463,20476] [2021-12-15 12:09:43,845 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.7.1.ufo.BOUNDED-14.pals+Problem12_label09.c[28211,28224] [2021-12-15 12:09:44,407 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:09:44,417 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 12:09:44,443 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.7.1.ufo.BOUNDED-14.pals+Problem12_label09.c[20463,20476] [2021-12-15 12:09:44,452 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.7.1.ufo.BOUNDED-14.pals+Problem12_label09.c[28211,28224] [2021-12-15 12:09:44,797 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:09:44,843 INFO L208 MainTranslator]: Completed translation [2021-12-15 12:09:44,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:09:44 WrapperNode [2021-12-15 12:09:44,844 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 12:09:44,846 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 12:09:44,846 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 12:09:44,846 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 12:09:44,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:09:44" (1/1) ... [2021-12-15 12:09:44,914 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:09:44" (1/1) ... [2021-12-15 12:09:45,270 INFO L137 Inliner]: procedures = 38, calls = 24, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 5211 [2021-12-15 12:09:45,271 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 12:09:45,271 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 12:09:45,271 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 12:09:45,272 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 12:09:45,279 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:09:44" (1/1) ... [2021-12-15 12:09:45,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:09:44" (1/1) ... [2021-12-15 12:09:45,344 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:09:44" (1/1) ... [2021-12-15 12:09:45,345 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:09:44" (1/1) ... [2021-12-15 12:09:45,527 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:09:44" (1/1) ... [2021-12-15 12:09:45,556 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:09:44" (1/1) ... [2021-12-15 12:09:45,617 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:09:44" (1/1) ... [2021-12-15 12:09:45,713 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 12:09:45,715 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 12:09:45,715 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 12:09:45,719 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 12:09:45,722 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:09:44" (1/1) ... [2021-12-15 12:09:45,727 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 12:09:45,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 12:09:45,773 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) [2021-12-15 12:09:45,852 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 [2021-12-15 12:09:45,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 12:09:45,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 12:09:45,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 12:09:45,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 12:09:46,073 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 12:09:46,089 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 12:09:48,990 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 12:09:49,007 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 12:09:49,007 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-15 12:09:49,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 12:09:49 BoogieIcfgContainer [2021-12-15 12:09:49,011 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 12:09:49,013 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 12:09:49,013 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 12:09:49,016 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 12:09:49,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 12:09:43" (1/3) ... [2021-12-15 12:09:49,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2523e515 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 12:09:49, skipping insertion in model container [2021-12-15 12:09:49,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:09:44" (2/3) ... [2021-12-15 12:09:49,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2523e515 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 12:09:49, skipping insertion in model container [2021-12-15 12:09:49,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 12:09:49" (3/3) ... [2021-12-15 12:09:49,019 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label09.c [2021-12-15 12:09:49,025 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 12:09:49,026 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 12:09:49,071 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 12:09:49,077 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 12:09:49,078 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 12:09:49,108 INFO L276 IsEmpty]: Start isEmpty. Operand has 944 states, 941 states have (on average 1.8979808714133901) internal successors, (1786), 943 states have internal predecessors, (1786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:09:49,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-15 12:09:49,117 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:09:49,117 INFO L514 BasicCegarLoop]: 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] [2021-12-15 12:09:49,118 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:09:49,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:09:49,121 INFO L85 PathProgramCache]: Analyzing trace with hash 720070723, now seen corresponding path program 1 times [2021-12-15 12:09:49,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:09:49,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601494806] [2021-12-15 12:09:49,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:09:49,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:09:49,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:09:49,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:09:49,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:09:49,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601494806] [2021-12-15 12:09:49,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601494806] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:09:49,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:09:49,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 12:09:49,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540321295] [2021-12-15 12:09:49,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:09:49,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-15 12:09:49,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:09:49,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-15 12:09:49,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 12:09:49,359 INFO L87 Difference]: Start difference. First operand has 944 states, 941 states have (on average 1.8979808714133901) internal successors, (1786), 943 states have internal predecessors, (1786), 0 states have call successors, (0), 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 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:09:49,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:09:49,441 INFO L93 Difference]: Finished difference Result 1832 states and 3464 transitions. [2021-12-15 12:09:49,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-15 12:09:49,445 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2021-12-15 12:09:49,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:09:49,467 INFO L225 Difference]: With dead ends: 1832 [2021-12-15 12:09:49,467 INFO L226 Difference]: Without dead ends: 878 [2021-12-15 12:09:49,476 INFO L932 BasicCegarLoop]: 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 [2021-12-15 12:09:49,480 INFO L933 BasicCegarLoop]: 1720 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, 1720 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 [2021-12-15 12:09:49,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1720 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 12:09:49,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2021-12-15 12:09:49,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 878. [2021-12-15 12:09:49,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 876 states have (on average 1.8869863013698631) internal successors, (1653), 877 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:09:49,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1653 transitions. [2021-12-15 12:09:49,552 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1653 transitions. Word has length 42 [2021-12-15 12:09:49,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:09:49,553 INFO L470 AbstractCegarLoop]: Abstraction has 878 states and 1653 transitions. [2021-12-15 12:09:49,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:09:49,553 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1653 transitions. [2021-12-15 12:09:49,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-15 12:09:49,555 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:09:49,555 INFO L514 BasicCegarLoop]: 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] [2021-12-15 12:09:49,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 12:09:49,555 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:09:49,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:09:49,556 INFO L85 PathProgramCache]: Analyzing trace with hash 325703937, now seen corresponding path program 1 times [2021-12-15 12:09:49,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:09:49,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212946755] [2021-12-15 12:09:49,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:09:49,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:09:49,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:09:49,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:09:49,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:09:49,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212946755] [2021-12-15 12:09:49,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212946755] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:09:49,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:09:49,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 12:09:49,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71658089] [2021-12-15 12:09:49,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:09:49,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 12:09:49,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:09:49,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 12:09:49,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 12:09:49,683 INFO L87 Difference]: Start difference. First operand 878 states and 1653 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:09:49,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:09:49,790 INFO L93 Difference]: Finished difference Result 950 states and 1765 transitions. [2021-12-15 12:09:49,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 12:09:49,796 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2021-12-15 12:09:49,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:09:49,799 INFO L225 Difference]: With dead ends: 950 [2021-12-15 12:09:49,799 INFO L226 Difference]: Without dead ends: 878 [2021-12-15 12:09:49,800 INFO L932 BasicCegarLoop]: 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 [2021-12-15 12:09:49,802 INFO L933 BasicCegarLoop]: 1651 mSDtfsCounter, 3 mSDsluCounter, 4900 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6551 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 12:09:49,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 6551 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 12:09:49,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2021-12-15 12:09:49,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 878. [2021-12-15 12:09:49,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 876 states have (on average 1.8299086757990868) internal successors, (1603), 877 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:09:49,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1603 transitions. [2021-12-15 12:09:49,822 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1603 transitions. Word has length 42 [2021-12-15 12:09:49,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:09:49,822 INFO L470 AbstractCegarLoop]: Abstraction has 878 states and 1603 transitions. [2021-12-15 12:09:49,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:09:49,823 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1603 transitions. [2021-12-15 12:09:49,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-15 12:09:49,828 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:09:49,828 INFO L514 BasicCegarLoop]: 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] [2021-12-15 12:09:49,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-15 12:09:49,829 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:09:49,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:09:49,830 INFO L85 PathProgramCache]: Analyzing trace with hash -131611855, now seen corresponding path program 1 times [2021-12-15 12:09:49,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:09:49,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90889411] [2021-12-15 12:09:49,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:09:49,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:09:49,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:09:49,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:09:49,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:09:49,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90889411] [2021-12-15 12:09:49,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90889411] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:09:49,976 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:09:49,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 12:09:49,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469912007] [2021-12-15 12:09:49,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:09:49,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 12:09:49,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:09:49,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 12:09:49,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 12:09:49,978 INFO L87 Difference]: Start difference. First operand 878 states and 1603 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:09:55,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:09:55,431 INFO L93 Difference]: Finished difference Result 3133 states and 5912 transitions. [2021-12-15 12:09:55,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 12:09:55,432 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-12-15 12:09:55,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:09:55,448 INFO L225 Difference]: With dead ends: 3133 [2021-12-15 12:09:55,448 INFO L226 Difference]: Without dead ends: 2380 [2021-12-15 12:09:55,451 INFO L932 BasicCegarLoop]: 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 [2021-12-15 12:09:55,454 INFO L933 BasicCegarLoop]: 839 mSDtfsCounter, 2499 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5354 mSolverCounterSat, 1161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2499 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 6515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1161 IncrementalHoareTripleChecker+Valid, 5354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-12-15 12:09:55,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2499 Valid, 857 Invalid, 6515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1161 Valid, 5354 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2021-12-15 12:09:55,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2380 states. [2021-12-15 12:09:55,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2380 to 2380. [2021-12-15 12:09:55,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2380 states, 2378 states have (on average 1.5630782169890665) internal successors, (3717), 2379 states have internal predecessors, (3717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:09:55,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2380 states to 2380 states and 3717 transitions. [2021-12-15 12:09:55,511 INFO L78 Accepts]: Start accepts. Automaton has 2380 states and 3717 transitions. Word has length 67 [2021-12-15 12:09:55,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:09:55,512 INFO L470 AbstractCegarLoop]: Abstraction has 2380 states and 3717 transitions. [2021-12-15 12:09:55,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:09:55,512 INFO L276 IsEmpty]: Start isEmpty. Operand 2380 states and 3717 transitions. [2021-12-15 12:09:55,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-15 12:09:55,514 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:09:55,514 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 12:09:55,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-15 12:09:55,514 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:09:55,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:09:55,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1207745120, now seen corresponding path program 1 times [2021-12-15 12:09:55,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:09:55,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871791476] [2021-12-15 12:09:55,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:09:55,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:09:55,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:09:55,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:09:55,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:09:55,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871791476] [2021-12-15 12:09:55,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871791476] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:09:55,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:09:55,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 12:09:55,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482109179] [2021-12-15 12:09:55,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:09:55,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 12:09:55,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:09:55,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 12:09:55,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 12:09:55,601 INFO L87 Difference]: Start difference. First operand 2380 states and 3717 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:09:55,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:09:55,628 INFO L93 Difference]: Finished difference Result 2510 states and 3923 transitions. [2021-12-15 12:09:55,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 12:09:55,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2021-12-15 12:09:55,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:09:55,635 INFO L225 Difference]: With dead ends: 2510 [2021-12-15 12:09:55,635 INFO L226 Difference]: Without dead ends: 2442 [2021-12-15 12:09:55,636 INFO L932 BasicCegarLoop]: 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 [2021-12-15 12:09:55,636 INFO L933 BasicCegarLoop]: 1697 mSDtfsCounter, 1537 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1537 SdHoareTripleChecker+Valid, 1803 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 [2021-12-15 12:09:55,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1537 Valid, 1803 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 12:09:55,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2442 states. [2021-12-15 12:09:55,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2442 to 2440. [2021-12-15 12:09:55,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2440 states, 2438 states have (on average 1.5639868744872847) internal successors, (3813), 2439 states have internal predecessors, (3813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:09:55,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2440 states to 2440 states and 3813 transitions. [2021-12-15 12:09:55,669 INFO L78 Accepts]: Start accepts. Automaton has 2440 states and 3813 transitions. Word has length 91 [2021-12-15 12:09:55,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:09:55,670 INFO L470 AbstractCegarLoop]: Abstraction has 2440 states and 3813 transitions. [2021-12-15 12:09:55,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:09:55,670 INFO L276 IsEmpty]: Start isEmpty. Operand 2440 states and 3813 transitions. [2021-12-15 12:09:55,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-15 12:09:55,672 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:09:55,672 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 12:09:55,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-15 12:09:55,672 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:09:55,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:09:55,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1564953708, now seen corresponding path program 1 times [2021-12-15 12:09:55,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:09:55,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88590354] [2021-12-15 12:09:55,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:09:55,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:09:55,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:09:55,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:09:55,736 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:09:55,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88590354] [2021-12-15 12:09:55,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88590354] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:09:55,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:09:55,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 12:09:55,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024388817] [2021-12-15 12:09:55,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:09:55,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 12:09:55,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:09:55,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 12:09:55,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 12:09:55,742 INFO L87 Difference]: Start difference. First operand 2440 states and 3813 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:09:55,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:09:55,782 INFO L93 Difference]: Finished difference Result 2684 states and 4201 transitions. [2021-12-15 12:09:55,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 12:09:55,783 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2021-12-15 12:09:55,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:09:55,792 INFO L225 Difference]: With dead ends: 2684 [2021-12-15 12:09:55,793 INFO L226 Difference]: Without dead ends: 2556 [2021-12-15 12:09:55,794 INFO L932 BasicCegarLoop]: 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 [2021-12-15 12:09:55,795 INFO L933 BasicCegarLoop]: 1692 mSDtfsCounter, 1533 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1533 SdHoareTripleChecker+Valid, 1802 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 [2021-12-15 12:09:55,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1533 Valid, 1802 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 12:09:55,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2556 states. [2021-12-15 12:09:55,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2556 to 2554. [2021-12-15 12:09:55,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2554 states, 2552 states have (on average 1.5650470219435737) internal successors, (3994), 2553 states have internal predecessors, (3994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:09:55,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2554 states to 2554 states and 3994 transitions. [2021-12-15 12:09:55,853 INFO L78 Accepts]: Start accepts. Automaton has 2554 states and 3994 transitions. Word has length 91 [2021-12-15 12:09:55,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:09:55,858 INFO L470 AbstractCegarLoop]: Abstraction has 2554 states and 3994 transitions. [2021-12-15 12:09:55,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:09:55,858 INFO L276 IsEmpty]: Start isEmpty. Operand 2554 states and 3994 transitions. [2021-12-15 12:09:55,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-15 12:09:55,859 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:09:55,860 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 12:09:55,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-15 12:09:55,860 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:09:55,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:09:55,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1479108296, now seen corresponding path program 1 times [2021-12-15 12:09:55,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:09:55,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559883226] [2021-12-15 12:09:55,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:09:55,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:09:55,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:09:55,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:09:55,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:09:55,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559883226] [2021-12-15 12:09:55,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559883226] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:09:55,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:09:55,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 12:09:55,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459932619] [2021-12-15 12:09:55,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:09:55,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 12:09:55,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:09:55,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 12:09:55,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 12:09:55,951 INFO L87 Difference]: Start difference. First operand 2554 states and 3994 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:09:55,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:09:55,999 INFO L93 Difference]: Finished difference Result 3014 states and 4724 transitions. [2021-12-15 12:09:56,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 12:09:56,000 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2021-12-15 12:09:56,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:09:56,013 INFO L225 Difference]: With dead ends: 3014 [2021-12-15 12:09:56,014 INFO L226 Difference]: Without dead ends: 2772 [2021-12-15 12:09:56,016 INFO L932 BasicCegarLoop]: 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 [2021-12-15 12:09:56,018 INFO L933 BasicCegarLoop]: 1687 mSDtfsCounter, 1529 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1529 SdHoareTripleChecker+Valid, 1801 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 [2021-12-15 12:09:56,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1529 Valid, 1801 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 12:09:56,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2772 states. [2021-12-15 12:09:56,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2772 to 2770. [2021-12-15 12:09:56,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2770 states, 2768 states have (on average 1.5657514450867052) internal successors, (4334), 2769 states have internal predecessors, (4334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:09:56,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2770 states to 2770 states and 4334 transitions. [2021-12-15 12:09:56,139 INFO L78 Accepts]: Start accepts. Automaton has 2770 states and 4334 transitions. Word has length 91 [2021-12-15 12:09:56,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:09:56,141 INFO L470 AbstractCegarLoop]: Abstraction has 2770 states and 4334 transitions. [2021-12-15 12:09:56,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:09:56,141 INFO L276 IsEmpty]: Start isEmpty. Operand 2770 states and 4334 transitions. [2021-12-15 12:09:56,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-15 12:09:56,142 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:09:56,142 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 12:09:56,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-15 12:09:56,143 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:09:56,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:09:56,144 INFO L85 PathProgramCache]: Analyzing trace with hash 733525566, now seen corresponding path program 1 times [2021-12-15 12:09:56,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:09:56,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442154126] [2021-12-15 12:09:56,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:09:56,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:09:56,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:09:56,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:09:56,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:09:56,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442154126] [2021-12-15 12:09:56,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442154126] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:09:56,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:09:56,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 12:09:56,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224495687] [2021-12-15 12:09:56,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:09:56,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 12:09:56,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:09:56,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 12:09:56,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 12:09:56,215 INFO L87 Difference]: Start difference. First operand 2770 states and 4334 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:09:56,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:09:56,258 INFO L93 Difference]: Finished difference Result 3638 states and 5704 transitions. [2021-12-15 12:09:56,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 12:09:56,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2021-12-15 12:09:56,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:09:56,270 INFO L225 Difference]: With dead ends: 3638 [2021-12-15 12:09:56,271 INFO L226 Difference]: Without dead ends: 3180 [2021-12-15 12:09:56,273 INFO L932 BasicCegarLoop]: 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 [2021-12-15 12:09:56,274 INFO L933 BasicCegarLoop]: 1682 mSDtfsCounter, 1525 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1525 SdHoareTripleChecker+Valid, 1800 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 [2021-12-15 12:09:56,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1525 Valid, 1800 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 12:09:56,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3180 states. [2021-12-15 12:09:56,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3180 to 3178. [2021-12-15 12:09:56,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3178 states, 3176 states have (on average 1.564861460957179) internal successors, (4970), 3177 states have internal predecessors, (4970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:09:56,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3178 states to 3178 states and 4970 transitions. [2021-12-15 12:09:56,352 INFO L78 Accepts]: Start accepts. Automaton has 3178 states and 4970 transitions. Word has length 91 [2021-12-15 12:09:56,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:09:56,352 INFO L470 AbstractCegarLoop]: Abstraction has 3178 states and 4970 transitions. [2021-12-15 12:09:56,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:09:56,353 INFO L276 IsEmpty]: Start isEmpty. Operand 3178 states and 4970 transitions. [2021-12-15 12:09:56,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-15 12:09:56,354 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:09:56,354 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 12:09:56,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-15 12:09:56,355 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:09:56,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:09:56,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1206505292, now seen corresponding path program 1 times [2021-12-15 12:09:56,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:09:56,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829018308] [2021-12-15 12:09:56,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:09:56,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:09:56,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:09:56,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:09:56,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:09:56,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829018308] [2021-12-15 12:09:56,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829018308] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:09:56,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:09:56,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 12:09:56,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793592641] [2021-12-15 12:09:56,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:09:56,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 12:09:56,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:09:56,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 12:09:56,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 12:09:56,396 INFO L87 Difference]: Start difference. First operand 3178 states and 4970 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:09:56,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:09:56,456 INFO L93 Difference]: Finished difference Result 4814 states and 7532 transitions. [2021-12-15 12:09:56,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 12:09:56,457 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2021-12-15 12:09:56,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:09:56,471 INFO L225 Difference]: With dead ends: 4814 [2021-12-15 12:09:56,471 INFO L226 Difference]: Without dead ends: 3948 [2021-12-15 12:09:56,474 INFO L932 BasicCegarLoop]: 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 [2021-12-15 12:09:56,474 INFO L933 BasicCegarLoop]: 1677 mSDtfsCounter, 1521 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 1799 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 [2021-12-15 12:09:56,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1521 Valid, 1799 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 12:09:56,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3948 states. [2021-12-15 12:09:56,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3948 to 3946. [2021-12-15 12:09:56,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3946 states, 3944 states have (on average 1.5603448275862069) internal successors, (6154), 3945 states have internal predecessors, (6154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:09:56,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3946 states to 3946 states and 6154 transitions. [2021-12-15 12:09:56,578 INFO L78 Accepts]: Start accepts. Automaton has 3946 states and 6154 transitions. Word has length 91 [2021-12-15 12:09:56,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:09:56,579 INFO L470 AbstractCegarLoop]: Abstraction has 3946 states and 6154 transitions. [2021-12-15 12:09:56,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:09:56,579 INFO L276 IsEmpty]: Start isEmpty. Operand 3946 states and 6154 transitions. [2021-12-15 12:09:56,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-15 12:09:56,580 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:09:56,581 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 12:09:56,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-15 12:09:56,581 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:09:56,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:09:56,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1494177322, now seen corresponding path program 1 times [2021-12-15 12:09:56,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:09:56,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483933438] [2021-12-15 12:09:56,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:09:56,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:09:56,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:09:56,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:09:56,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:09:56,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483933438] [2021-12-15 12:09:56,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483933438] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:09:56,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:09:56,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-15 12:09:56,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355712033] [2021-12-15 12:09:56,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:09:56,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-15 12:09:56,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:09:56,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-15 12:09:56,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-15 12:09:56,667 INFO L87 Difference]: Start difference. First operand 3946 states and 6154 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:09:57,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:09:57,505 INFO L93 Difference]: Finished difference Result 26822 states and 41784 transitions. [2021-12-15 12:09:57,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-15 12:09:57,506 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2021-12-15 12:09:57,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:09:57,597 INFO L225 Difference]: With dead ends: 26822 [2021-12-15 12:09:57,597 INFO L226 Difference]: Without dead ends: 25188 [2021-12-15 12:09:57,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2021-12-15 12:09:57,616 INFO L933 BasicCegarLoop]: 1597 mSDtfsCounter, 13389 mSDsluCounter, 1514 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13389 SdHoareTripleChecker+Valid, 3111 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 12:09:57,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13389 Valid, 3111 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 12:09:57,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25188 states. [2021-12-15 12:09:57,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25188 to 5578. [2021-12-15 12:09:57,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5578 states, 5576 states have (on average 1.5484218077474892) internal successors, (8634), 5577 states have internal predecessors, (8634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:09:57,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5578 states to 5578 states and 8634 transitions. [2021-12-15 12:09:57,987 INFO L78 Accepts]: Start accepts. Automaton has 5578 states and 8634 transitions. Word has length 91 [2021-12-15 12:09:57,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:09:57,988 INFO L470 AbstractCegarLoop]: Abstraction has 5578 states and 8634 transitions. [2021-12-15 12:09:57,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:09:57,989 INFO L276 IsEmpty]: Start isEmpty. Operand 5578 states and 8634 transitions. [2021-12-15 12:09:57,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-15 12:09:57,989 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:09:57,990 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 12:09:57,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-15 12:09:57,991 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:09:57,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:09:57,992 INFO L85 PathProgramCache]: Analyzing trace with hash -30360326, now seen corresponding path program 1 times [2021-12-15 12:09:57,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:09:57,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531567700] [2021-12-15 12:09:57,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:09:57,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:09:58,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:09:58,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:09:58,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:09:58,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531567700] [2021-12-15 12:09:58,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531567700] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:09:58,029 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:09:58,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 12:09:58,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939844307] [2021-12-15 12:09:58,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:09:58,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 12:09:58,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:09:58,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 12:09:58,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 12:09:58,031 INFO L87 Difference]: Start difference. First operand 5578 states and 8634 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:09:58,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:09:58,244 INFO L93 Difference]: Finished difference Result 10400 states and 16046 transitions. [2021-12-15 12:09:58,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 12:09:58,244 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-12-15 12:09:58,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:09:58,258 INFO L225 Difference]: With dead ends: 10400 [2021-12-15 12:09:58,258 INFO L226 Difference]: Without dead ends: 7134 [2021-12-15 12:09:58,264 INFO L932 BasicCegarLoop]: 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 [2021-12-15 12:09:58,265 INFO L933 BasicCegarLoop]: 1632 mSDtfsCounter, 1505 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1505 SdHoareTripleChecker+Valid, 1735 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 [2021-12-15 12:09:58,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1505 Valid, 1735 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 12:09:58,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7134 states. [2021-12-15 12:09:58,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7134 to 7132. [2021-12-15 12:09:58,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7132 states, 7130 states have (on average 1.5388499298737728) internal successors, (10972), 7131 states have internal predecessors, (10972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:09:58,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7132 states to 7132 states and 10972 transitions. [2021-12-15 12:09:58,516 INFO L78 Accepts]: Start accepts. Automaton has 7132 states and 10972 transitions. Word has length 93 [2021-12-15 12:09:58,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:09:58,517 INFO L470 AbstractCegarLoop]: Abstraction has 7132 states and 10972 transitions. [2021-12-15 12:09:58,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:09:58,517 INFO L276 IsEmpty]: Start isEmpty. Operand 7132 states and 10972 transitions. [2021-12-15 12:09:58,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-15 12:09:58,518 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:09:58,519 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 12:09:58,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-15 12:09:58,519 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:09:58,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:09:58,520 INFO L85 PathProgramCache]: Analyzing trace with hash 36133186, now seen corresponding path program 1 times [2021-12-15 12:09:58,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:09:58,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904070553] [2021-12-15 12:09:58,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:09:58,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:09:58,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:09:58,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:09:58,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:09:58,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904070553] [2021-12-15 12:09:58,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904070553] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:09:58,729 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:09:58,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-15 12:09:58,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457999174] [2021-12-15 12:09:58,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:09:58,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-15 12:09:58,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:09:58,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-15 12:09:58,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-15 12:09:58,731 INFO L87 Difference]: Start difference. First operand 7132 states and 10972 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:09:59,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:09:59,128 INFO L93 Difference]: Finished difference Result 11952 states and 18334 transitions. [2021-12-15 12:09:59,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-15 12:09:59,128 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-12-15 12:09:59,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:09:59,140 INFO L225 Difference]: With dead ends: 11952 [2021-12-15 12:09:59,141 INFO L226 Difference]: Without dead ends: 7134 [2021-12-15 12:09:59,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2021-12-15 12:09:59,149 INFO L933 BasicCegarLoop]: 1643 mSDtfsCounter, 9450 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9450 SdHoareTripleChecker+Valid, 2273 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 12:09:59,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9450 Valid, 2273 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 12:09:59,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7134 states. [2021-12-15 12:09:59,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7134 to 7132. [2021-12-15 12:09:59,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7132 states, 7130 states have (on average 1.5321178120617112) internal successors, (10924), 7131 states have internal predecessors, (10924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:09:59,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7132 states to 7132 states and 10924 transitions. [2021-12-15 12:09:59,320 INFO L78 Accepts]: Start accepts. Automaton has 7132 states and 10924 transitions. Word has length 93 [2021-12-15 12:09:59,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:09:59,320 INFO L470 AbstractCegarLoop]: Abstraction has 7132 states and 10924 transitions. [2021-12-15 12:09:59,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:09:59,321 INFO L276 IsEmpty]: Start isEmpty. Operand 7132 states and 10924 transitions. [2021-12-15 12:09:59,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-15 12:09:59,321 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:09:59,321 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 12:09:59,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-15 12:09:59,322 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:09:59,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:09:59,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1825047262, now seen corresponding path program 1 times [2021-12-15 12:09:59,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:09:59,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759688503] [2021-12-15 12:09:59,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:09:59,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:09:59,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:09:59,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:09:59,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:09:59,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759688503] [2021-12-15 12:09:59,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759688503] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:09:59,354 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:09:59,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 12:09:59,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109855911] [2021-12-15 12:09:59,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:09:59,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 12:09:59,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:09:59,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 12:09:59,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 12:09:59,355 INFO L87 Difference]: Start difference. First operand 7132 states and 10924 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:09:59,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:09:59,622 INFO L93 Difference]: Finished difference Result 16192 states and 24590 transitions. [2021-12-15 12:09:59,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 12:09:59,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-12-15 12:09:59,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:09:59,640 INFO L225 Difference]: With dead ends: 16192 [2021-12-15 12:09:59,641 INFO L226 Difference]: Without dead ends: 11374 [2021-12-15 12:09:59,647 INFO L932 BasicCegarLoop]: 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 [2021-12-15 12:09:59,648 INFO L933 BasicCegarLoop]: 1659 mSDtfsCounter, 1513 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 1789 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 [2021-12-15 12:09:59,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1513 Valid, 1789 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 12:09:59,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11374 states. [2021-12-15 12:09:59,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11374 to 11372. [2021-12-15 12:09:59,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11372 states, 11370 states have (on average 1.5109938434476693) internal successors, (17180), 11371 states have internal predecessors, (17180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:09:59,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11372 states to 11372 states and 17180 transitions. [2021-12-15 12:09:59,958 INFO L78 Accepts]: Start accepts. Automaton has 11372 states and 17180 transitions. Word has length 93 [2021-12-15 12:09:59,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:09:59,958 INFO L470 AbstractCegarLoop]: Abstraction has 11372 states and 17180 transitions. [2021-12-15 12:09:59,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:09:59,958 INFO L276 IsEmpty]: Start isEmpty. Operand 11372 states and 17180 transitions. [2021-12-15 12:09:59,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-15 12:09:59,959 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:09:59,959 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 12:09:59,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-15 12:09:59,960 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:09:59,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:09:59,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1222412418, now seen corresponding path program 1 times [2021-12-15 12:09:59,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:09:59,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814033225] [2021-12-15 12:09:59,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:09:59,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:09:59,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:09:59,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:09:59,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:09:59,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814033225] [2021-12-15 12:09:59,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814033225] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:09:59,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:09:59,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 12:09:59,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361257066] [2021-12-15 12:09:59,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:09:59,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 12:09:59,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:09:59,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 12:09:59,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 12:09:59,989 INFO L87 Difference]: Start difference. First operand 11372 states and 17180 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:10:00,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:10:00,451 INFO L93 Difference]: Finished difference Result 28336 states and 42398 transitions. [2021-12-15 12:10:00,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 12:10:00,451 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-12-15 12:10:00,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:10:00,482 INFO L225 Difference]: With dead ends: 28336 [2021-12-15 12:10:00,483 INFO L226 Difference]: Without dead ends: 19278 [2021-12-15 12:10:00,497 INFO L932 BasicCegarLoop]: 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 [2021-12-15 12:10:00,497 INFO L933 BasicCegarLoop]: 1672 mSDtfsCounter, 1517 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1517 SdHoareTripleChecker+Valid, 1798 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 [2021-12-15 12:10:00,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1517 Valid, 1798 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 12:10:00,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19278 states. [2021-12-15 12:10:01,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19278 to 19276. [2021-12-15 12:10:01,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19276 states, 19274 states have (on average 1.4857320742969804) internal successors, (28636), 19275 states have internal predecessors, (28636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:10:01,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19276 states to 19276 states and 28636 transitions. [2021-12-15 12:10:01,127 INFO L78 Accepts]: Start accepts. Automaton has 19276 states and 28636 transitions. Word has length 93 [2021-12-15 12:10:01,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:10:01,127 INFO L470 AbstractCegarLoop]: Abstraction has 19276 states and 28636 transitions. [2021-12-15 12:10:01,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:10:01,128 INFO L276 IsEmpty]: Start isEmpty. Operand 19276 states and 28636 transitions. [2021-12-15 12:10:01,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-15 12:10:01,128 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:10:01,128 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 12:10:01,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-15 12:10:01,129 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:10:01,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:10:01,129 INFO L85 PathProgramCache]: Analyzing trace with hash 705405902, now seen corresponding path program 1 times [2021-12-15 12:10:01,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:10:01,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900304923] [2021-12-15 12:10:01,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:10:01,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:10:01,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:10:01,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:10:01,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:10:01,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900304923] [2021-12-15 12:10:01,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900304923] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:10:01,194 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:10:01,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 12:10:01,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68287703] [2021-12-15 12:10:01,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:10:01,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-15 12:10:01,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:10:01,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-15 12:10:01,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-15 12:10:01,196 INFO L87 Difference]: Start difference. First operand 19276 states and 28636 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 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) [2021-12-15 12:10:02,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:10:02,396 INFO L93 Difference]: Finished difference Result 51856 states and 76830 transitions. [2021-12-15 12:10:02,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-15 12:10:02,397 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 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 94 [2021-12-15 12:10:02,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:10:02,451 INFO L225 Difference]: With dead ends: 51856 [2021-12-15 12:10:02,451 INFO L226 Difference]: Without dead ends: 34894 [2021-12-15 12:10:02,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-15 12:10:02,471 INFO L933 BasicCegarLoop]: 1560 mSDtfsCounter, 5126 mSDsluCounter, 1611 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5126 SdHoareTripleChecker+Valid, 3171 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 12:10:02,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5126 Valid, 3171 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 12:10:02,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34894 states. [2021-12-15 12:10:03,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34894 to 30796. [2021-12-15 12:10:03,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30796 states, 30794 states have (on average 1.4785997272195883) internal successors, (45532), 30795 states have internal predecessors, (45532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:10:03,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30796 states to 30796 states and 45532 transitions. [2021-12-15 12:10:03,580 INFO L78 Accepts]: Start accepts. Automaton has 30796 states and 45532 transitions. Word has length 94 [2021-12-15 12:10:03,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:10:03,580 INFO L470 AbstractCegarLoop]: Abstraction has 30796 states and 45532 transitions. [2021-12-15 12:10:03,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 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) [2021-12-15 12:10:03,580 INFO L276 IsEmpty]: Start isEmpty. Operand 30796 states and 45532 transitions. [2021-12-15 12:10:03,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-15 12:10:03,581 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:10:03,581 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 12:10:03,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-15 12:10:03,582 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:10:03,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:10:03,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1549411404, now seen corresponding path program 1 times [2021-12-15 12:10:03,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:10:03,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642898921] [2021-12-15 12:10:03,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:10:03,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:10:03,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:10:03,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:10:03,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:10:03,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642898921] [2021-12-15 12:10:03,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642898921] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:10:03,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:10:03,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 12:10:03,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53657668] [2021-12-15 12:10:03,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:10:03,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-15 12:10:03,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:10:03,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-15 12:10:03,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-15 12:10:03,634 INFO L87 Difference]: Start difference. First operand 30796 states and 45532 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 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) [2021-12-15 12:10:04,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:10:04,840 INFO L93 Difference]: Finished difference Result 59278 states and 87453 transitions. [2021-12-15 12:10:04,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-15 12:10:04,841 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 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 94 [2021-12-15 12:10:04,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:10:04,888 INFO L225 Difference]: With dead ends: 59278 [2021-12-15 12:10:04,889 INFO L226 Difference]: Without dead ends: 30796 [2021-12-15 12:10:04,915 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-15 12:10:04,916 INFO L933 BasicCegarLoop]: 1558 mSDtfsCounter, 4949 mSDsluCounter, 1525 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4949 SdHoareTripleChecker+Valid, 3083 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 12:10:04,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4949 Valid, 3083 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 12:10:04,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30796 states. [2021-12-15 12:10:06,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30796 to 30796. [2021-12-15 12:10:06,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30796 states, 30794 states have (on average 1.4682080924855492) internal successors, (45212), 30795 states have internal predecessors, (45212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:10:06,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30796 states to 30796 states and 45212 transitions. [2021-12-15 12:10:06,318 INFO L78 Accepts]: Start accepts. Automaton has 30796 states and 45212 transitions. Word has length 94 [2021-12-15 12:10:06,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:10:06,318 INFO L470 AbstractCegarLoop]: Abstraction has 30796 states and 45212 transitions. [2021-12-15 12:10:06,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 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) [2021-12-15 12:10:06,318 INFO L276 IsEmpty]: Start isEmpty. Operand 30796 states and 45212 transitions. [2021-12-15 12:10:06,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-15 12:10:06,319 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:10:06,319 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 12:10:06,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-15 12:10:06,319 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:10:06,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:10:06,320 INFO L85 PathProgramCache]: Analyzing trace with hash 847811530, now seen corresponding path program 1 times [2021-12-15 12:10:06,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:10:06,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006185402] [2021-12-15 12:10:06,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:10:06,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:10:06,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:10:06,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:10:06,385 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:10:06,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006185402] [2021-12-15 12:10:06,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006185402] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:10:06,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:10:06,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-15 12:10:06,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212911714] [2021-12-15 12:10:06,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:10:06,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-15 12:10:06,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:10:06,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-15 12:10:06,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-15 12:10:06,388 INFO L87 Difference]: Start difference. First operand 30796 states and 45212 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) [2021-12-15 12:10:08,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:10:08,474 INFO L93 Difference]: Finished difference Result 57839 states and 83910 transitions. [2021-12-15 12:10:08,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-15 12:10:08,474 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 94 [2021-12-15 12:10:08,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:10:08,564 INFO L225 Difference]: With dead ends: 57839 [2021-12-15 12:10:08,564 INFO L226 Difference]: Without dead ends: 57837 [2021-12-15 12:10:08,584 INFO L932 BasicCegarLoop]: 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 [2021-12-15 12:10:08,584 INFO L933 BasicCegarLoop]: 1634 mSDtfsCounter, 829 mSDsluCounter, 9260 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 10894 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 [2021-12-15 12:10:08,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [829 Valid, 10894 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 12:10:08,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57837 states. [2021-12-15 12:10:10,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57837 to 32332. [2021-12-15 12:10:10,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32332 states, 32330 states have (on average 1.4439839158676153) internal successors, (46684), 32331 states have internal predecessors, (46684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:10:10,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32332 states to 32332 states and 46684 transitions. [2021-12-15 12:10:10,625 INFO L78 Accepts]: Start accepts. Automaton has 32332 states and 46684 transitions. Word has length 94 [2021-12-15 12:10:10,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:10:10,626 INFO L470 AbstractCegarLoop]: Abstraction has 32332 states and 46684 transitions. [2021-12-15 12:10:10,626 INFO L471 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) [2021-12-15 12:10:10,626 INFO L276 IsEmpty]: Start isEmpty. Operand 32332 states and 46684 transitions. [2021-12-15 12:10:10,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-15 12:10:10,639 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:10:10,639 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 12:10:10,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-15 12:10:10,639 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:10:10,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:10:10,640 INFO L85 PathProgramCache]: Analyzing trace with hash 101873069, now seen corresponding path program 1 times [2021-12-15 12:10:10,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:10:10,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16415811] [2021-12-15 12:10:10,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:10:10,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:10:10,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:10:10,706 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-15 12:10:10,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:10:10,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16415811] [2021-12-15 12:10:10,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16415811] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:10:10,706 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:10:10,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-15 12:10:10,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957533303] [2021-12-15 12:10:10,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:10:10,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-15 12:10:10,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:10:10,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-15 12:10:10,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-15 12:10:10,708 INFO L87 Difference]: Start difference. First operand 32332 states and 46684 transitions. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:10:20,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:10:20,142 INFO L93 Difference]: Finished difference Result 252060 states and 361668 transitions. [2021-12-15 12:10:20,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-15 12:10:20,143 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 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 130 [2021-12-15 12:10:20,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:10:20,606 INFO L225 Difference]: With dead ends: 252060 [2021-12-15 12:10:20,607 INFO L226 Difference]: Without dead ends: 222042 [2021-12-15 12:10:20,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-12-15 12:10:20,962 INFO L933 BasicCegarLoop]: 1699 mSDtfsCounter, 10791 mSDsluCounter, 2380 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10791 SdHoareTripleChecker+Valid, 4079 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 12:10:20,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10791 Valid, 4079 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 12:10:21,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222042 states. [2021-12-15 12:10:25,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222042 to 62348. [2021-12-15 12:10:26,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62348 states, 62346 states have (on average 1.4345106342026754) internal successors, (89436), 62347 states have internal predecessors, (89436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:10:26,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62348 states to 62348 states and 89436 transitions. [2021-12-15 12:10:26,158 INFO L78 Accepts]: Start accepts. Automaton has 62348 states and 89436 transitions. Word has length 130 [2021-12-15 12:10:26,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:10:26,159 INFO L470 AbstractCegarLoop]: Abstraction has 62348 states and 89436 transitions. [2021-12-15 12:10:26,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 12:10:26,159 INFO L276 IsEmpty]: Start isEmpty. Operand 62348 states and 89436 transitions. [2021-12-15 12:10:26,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-15 12:10:26,175 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:10:26,175 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 12:10:26,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-15 12:10:26,176 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:10:26,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:10:26,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1349380685, now seen corresponding path program 1 times [2021-12-15 12:10:26,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:10:26,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79691978] [2021-12-15 12:10:26,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:10:26,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:10:26,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:10:26,259 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-15 12:10:26,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:10:26,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79691978] [2021-12-15 12:10:26,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79691978] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:10:26,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:10:26,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-15 12:10:26,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883482773] [2021-12-15 12:10:26,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:10:26,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-15 12:10:26,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:10:26,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-15 12:10:26,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-15 12:10:26,262 INFO L87 Difference]: Start difference. First operand 62348 states and 89436 transitions. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)