./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f4319f1617264b859ec72b12374ecf2c184fa129f0736ad4fd8fa304d4c3211b --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 12:01:54,043 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 12:01:54,045 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 12:01:54,104 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 12:01:54,104 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 12:01:54,108 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 12:01:54,109 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 12:01:54,112 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 12:01:54,114 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 12:01:54,118 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 12:01:54,119 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 12:01:54,120 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 12:01:54,121 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 12:01:54,123 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 12:01:54,124 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 12:01:54,127 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 12:01:54,128 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 12:01:54,129 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 12:01:54,130 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 12:01:54,135 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 12:01:54,136 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 12:01:54,137 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 12:01:54,139 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 12:01:54,140 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 12:01:54,146 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 12:01:54,146 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 12:01:54,146 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 12:01:54,148 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 12:01:54,148 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 12:01:54,149 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 12:01:54,149 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 12:01:54,150 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 12:01:54,151 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 12:01:54,152 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 12:01:54,153 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 12:01:54,154 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 12:01:54,155 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 12:01:54,155 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 12:01:54,155 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 12:01:54,156 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 12:01:54,156 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 12:01:54,157 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 12:01:54,186 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 12:01:54,187 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 12:01:54,187 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 12:01:54,187 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 12:01:54,188 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 12:01:54,188 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 12:01:54,189 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 12:01:54,189 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 12:01:54,189 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 12:01:54,189 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 12:01:54,190 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 12:01:54,190 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 12:01:54,190 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 12:01:54,191 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 12:01:54,191 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 12:01:54,191 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 12:01:54,191 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 12:01:54,191 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 12:01:54,191 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 12:01:54,192 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 12:01:54,192 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 12:01:54,192 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 12:01:54,192 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 12:01:54,192 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 12:01:54,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 12:01:54,193 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 12:01:54,193 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 12:01:54,194 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 12:01:54,194 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 12:01:54,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 12:01:54,195 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 12:01:54,195 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 12:01:54,195 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 12:01:54,195 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 12:01:54,195 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4319f1617264b859ec72b12374ecf2c184fa129f0736ad4fd8fa304d4c3211b [2021-12-22 12:01:54,434 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 12:01:54,482 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 12:01:54,484 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 12:01:54,485 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 12:01:54,486 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 12:01:54,487 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2021-12-22 12:01:54,554 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67ea654e6/4331eef6d39c492e868f4de0d5516f62/FLAG8fc3901a1 [2021-12-22 12:01:55,206 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 12:01:55,207 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2021-12-22 12:01:55,227 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67ea654e6/4331eef6d39c492e868f4de0d5516f62/FLAG8fc3901a1 [2021-12-22 12:01:55,417 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67ea654e6/4331eef6d39c492e868f4de0d5516f62 [2021-12-22 12:01:55,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 12:01:55,420 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 12:01:55,421 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 12:01:55,421 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 12:01:55,423 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 12:01:55,424 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:01:55" (1/1) ... [2021-12-22 12:01:55,425 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a643ec8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:01:55, skipping insertion in model container [2021-12-22 12:01:55,425 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:01:55" (1/1) ... [2021-12-22 12:01:55,429 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 12:01:55,470 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 12:01:55,767 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[21524,21537] [2021-12-22 12:01:55,874 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 12:01:55,902 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 12:01:56,033 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[21524,21537] [2021-12-22 12:01:56,079 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 12:01:56,100 INFO L208 MainTranslator]: Completed translation [2021-12-22 12:01:56,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:01:56 WrapperNode [2021-12-22 12:01:56,101 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 12:01:56,102 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 12:01:56,102 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 12:01:56,102 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 12:01:56,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:01:56" (1/1) ... [2021-12-22 12:01:56,141 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:01:56" (1/1) ... [2021-12-22 12:01:56,196 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2713 [2021-12-22 12:01:56,196 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 12:01:56,197 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 12:01:56,197 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 12:01:56,197 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 12:01:56,203 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:01:56" (1/1) ... [2021-12-22 12:01:56,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:01:56" (1/1) ... [2021-12-22 12:01:56,208 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:01:56" (1/1) ... [2021-12-22 12:01:56,208 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:01:56" (1/1) ... [2021-12-22 12:01:56,241 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:01:56" (1/1) ... [2021-12-22 12:01:56,264 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:01:56" (1/1) ... [2021-12-22 12:01:56,279 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:01:56" (1/1) ... [2021-12-22 12:01:56,292 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 12:01:56,293 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 12:01:56,293 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 12:01:56,293 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 12:01:56,294 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:01:56" (1/1) ... [2021-12-22 12:01:56,299 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 12:01:56,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 12:01:56,329 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) [2021-12-22 12:01:56,351 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 [2021-12-22 12:01:56,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 12:01:56,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 12:01:56,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 12:01:56,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 12:01:56,512 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 12:01:56,514 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 12:01:57,764 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 12:01:57,774 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 12:01:57,774 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-22 12:01:57,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:01:57 BoogieIcfgContainer [2021-12-22 12:01:57,776 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 12:01:57,777 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 12:01:57,777 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 12:01:57,780 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 12:01:57,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 12:01:55" (1/3) ... [2021-12-22 12:01:57,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@90eb396 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:01:57, skipping insertion in model container [2021-12-22 12:01:57,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:01:56" (2/3) ... [2021-12-22 12:01:57,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@90eb396 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:01:57, skipping insertion in model container [2021-12-22 12:01:57,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:01:57" (3/3) ... [2021-12-22 12:01:57,782 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2021-12-22 12:01:57,786 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 12:01:57,786 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 12:01:57,820 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 12:01:57,824 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 [2021-12-22 12:01:57,825 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 12:01:57,844 INFO L276 IsEmpty]: Start isEmpty. Operand has 716 states, 714 states have (on average 1.8375350140056022) internal successors, (1312), 715 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:01:57,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-12-22 12:01:57,859 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:01:57,860 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:01:57,861 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:01:57,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:01:57,864 INFO L85 PathProgramCache]: Analyzing trace with hash 898129935, now seen corresponding path program 1 times [2021-12-22 12:01:57,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:01:57,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217695464] [2021-12-22 12:01:57,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:01:57,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:01:58,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:01:58,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:01:58,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:01:58,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217695464] [2021-12-22 12:01:58,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217695464] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:01:58,335 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:01:58,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 12:01:58,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387617819] [2021-12-22 12:01:58,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:01:58,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 12:01:58,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:01:58,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 12:01:58,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 12:01:58,397 INFO L87 Difference]: Start difference. First operand has 716 states, 714 states have (on average 1.8375350140056022) internal successors, (1312), 715 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:01:58,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:01:58,627 INFO L93 Difference]: Finished difference Result 1089 states and 1943 transitions. [2021-12-22 12:01:58,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 12:01:58,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 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 184 [2021-12-22 12:01:58,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:01:58,643 INFO L225 Difference]: With dead ends: 1089 [2021-12-22 12:01:58,643 INFO L226 Difference]: Without dead ends: 890 [2021-12-22 12:01:58,646 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 [2021-12-22 12:01:58,649 INFO L933 BasicCegarLoop]: 1564 mSDtfsCounter, 319 mSDsluCounter, 1244 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 2808 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 12:01:58,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [319 Valid, 2808 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 12:01:58,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2021-12-22 12:01:58,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 888. [2021-12-22 12:01:58,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 888 states, 887 states have (on average 1.7587373167981961) internal successors, (1560), 887 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:01:58,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1560 transitions. [2021-12-22 12:01:58,751 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 1560 transitions. Word has length 184 [2021-12-22 12:01:58,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:01:58,767 INFO L470 AbstractCegarLoop]: Abstraction has 888 states and 1560 transitions. [2021-12-22 12:01:58,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:01:58,768 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 1560 transitions. [2021-12-22 12:01:58,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-12-22 12:01:58,788 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:01:58,788 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:01:58,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 12:01:58,789 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:01:58,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:01:58,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1119640315, now seen corresponding path program 1 times [2021-12-22 12:01:58,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:01:58,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415185713] [2021-12-22 12:01:58,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:01:58,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:01:58,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:01:58,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:01:58,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:01:58,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415185713] [2021-12-22 12:01:58,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415185713] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:01:58,974 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:01:58,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 12:01:58,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328158085] [2021-12-22 12:01:58,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:01:58,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 12:01:58,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:01:58,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 12:01:58,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 12:01:58,978 INFO L87 Difference]: Start difference. First operand 888 states and 1560 transitions. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:01:59,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:01:59,015 INFO L93 Difference]: Finished difference Result 1237 states and 2155 transitions. [2021-12-22 12:01:59,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 12:01:59,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 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 188 [2021-12-22 12:01:59,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:01:59,021 INFO L225 Difference]: With dead ends: 1237 [2021-12-22 12:01:59,021 INFO L226 Difference]: Without dead ends: 1047 [2021-12-22 12:01:59,026 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 [2021-12-22 12:01:59,028 INFO L933 BasicCegarLoop]: 1523 mSDtfsCounter, 300 mSDsluCounter, 1221 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 2744 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 [2021-12-22 12:01:59,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 2744 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 12:01:59,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1047 states. [2021-12-22 12:01:59,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1047 to 1045. [2021-12-22 12:01:59,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1045 states, 1044 states have (on average 1.7509578544061302) internal successors, (1828), 1044 states have internal predecessors, (1828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:01:59,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 1828 transitions. [2021-12-22 12:01:59,067 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 1828 transitions. Word has length 188 [2021-12-22 12:01:59,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:01:59,069 INFO L470 AbstractCegarLoop]: Abstraction has 1045 states and 1828 transitions. [2021-12-22 12:01:59,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:01:59,069 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 1828 transitions. [2021-12-22 12:01:59,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-12-22 12:01:59,073 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:01:59,074 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:01:59,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 12:01:59,076 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:01:59,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:01:59,077 INFO L85 PathProgramCache]: Analyzing trace with hash -2018051092, now seen corresponding path program 1 times [2021-12-22 12:01:59,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:01:59,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545103669] [2021-12-22 12:01:59,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:01:59,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:01:59,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:01:59,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:01:59,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:01:59,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545103669] [2021-12-22 12:01:59,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545103669] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:01:59,219 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:01:59,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 12:01:59,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730806612] [2021-12-22 12:01:59,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:01:59,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 12:01:59,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:01:59,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 12:01:59,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 12:01:59,221 INFO L87 Difference]: Start difference. First operand 1045 states and 1828 transitions. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:01:59,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:01:59,280 INFO L93 Difference]: Finished difference Result 2052 states and 3531 transitions. [2021-12-22 12:01:59,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 12:01:59,281 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 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 188 [2021-12-22 12:01:59,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:01:59,286 INFO L225 Difference]: With dead ends: 2052 [2021-12-22 12:01:59,286 INFO L226 Difference]: Without dead ends: 1532 [2021-12-22 12:01:59,287 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 [2021-12-22 12:01:59,292 INFO L933 BasicCegarLoop]: 1274 mSDtfsCounter, 292 mSDsluCounter, 1235 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 2509 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 12:01:59,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [292 Valid, 2509 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 12:01:59,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1532 states. [2021-12-22 12:01:59,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1532 to 1530. [2021-12-22 12:01:59,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1530 states, 1529 states have (on average 1.7292347939829955) internal successors, (2644), 1529 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:01:59,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1530 states to 1530 states and 2644 transitions. [2021-12-22 12:01:59,324 INFO L78 Accepts]: Start accepts. Automaton has 1530 states and 2644 transitions. Word has length 188 [2021-12-22 12:01:59,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:01:59,325 INFO L470 AbstractCegarLoop]: Abstraction has 1530 states and 2644 transitions. [2021-12-22 12:01:59,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:01:59,325 INFO L276 IsEmpty]: Start isEmpty. Operand 1530 states and 2644 transitions. [2021-12-22 12:01:59,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-12-22 12:01:59,327 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:01:59,327 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:01:59,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 12:01:59,328 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:01:59,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:01:59,329 INFO L85 PathProgramCache]: Analyzing trace with hash -689859409, now seen corresponding path program 1 times [2021-12-22 12:01:59,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:01:59,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911484166] [2021-12-22 12:01:59,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:01:59,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:01:59,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:01:59,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:01:59,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:01:59,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911484166] [2021-12-22 12:01:59,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911484166] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:01:59,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:01:59,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 12:01:59,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412835275] [2021-12-22 12:01:59,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:01:59,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 12:01:59,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:01:59,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 12:01:59,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 12:01:59,427 INFO L87 Difference]: Start difference. First operand 1530 states and 2644 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:01:59,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:01:59,489 INFO L93 Difference]: Finished difference Result 3474 states and 5916 transitions. [2021-12-22 12:01:59,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 12:01:59,490 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 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 192 [2021-12-22 12:01:59,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:01:59,497 INFO L225 Difference]: With dead ends: 3474 [2021-12-22 12:01:59,497 INFO L226 Difference]: Without dead ends: 2469 [2021-12-22 12:01:59,499 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 [2021-12-22 12:01:59,503 INFO L933 BasicCegarLoop]: 1438 mSDtfsCounter, 285 mSDsluCounter, 1236 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 2674 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 12:01:59,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 2674 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 12:01:59,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2469 states. [2021-12-22 12:01:59,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2469 to 2467. [2021-12-22 12:01:59,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2467 states, 2466 states have (on average 1.7072181670721818) internal successors, (4210), 2466 states have internal predecessors, (4210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:01:59,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2467 states to 2467 states and 4210 transitions. [2021-12-22 12:01:59,593 INFO L78 Accepts]: Start accepts. Automaton has 2467 states and 4210 transitions. Word has length 192 [2021-12-22 12:01:59,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:01:59,594 INFO L470 AbstractCegarLoop]: Abstraction has 2467 states and 4210 transitions. [2021-12-22 12:01:59,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:01:59,594 INFO L276 IsEmpty]: Start isEmpty. Operand 2467 states and 4210 transitions. [2021-12-22 12:01:59,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-12-22 12:01:59,596 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:01:59,596 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:01:59,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 12:01:59,597 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:01:59,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:01:59,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1139258805, now seen corresponding path program 1 times [2021-12-22 12:01:59,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:01:59,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64754715] [2021-12-22 12:01:59,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:01:59,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:01:59,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:01:59,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:01:59,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:01:59,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64754715] [2021-12-22 12:01:59,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64754715] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:01:59,674 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:01:59,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 12:01:59,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713421630] [2021-12-22 12:01:59,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:01:59,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 12:01:59,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:01:59,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 12:01:59,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 12:01:59,675 INFO L87 Difference]: Start difference. First operand 2467 states and 4210 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:01:59,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:01:59,766 INFO L93 Difference]: Finished difference Result 4337 states and 7367 transitions. [2021-12-22 12:01:59,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 12:01:59,767 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 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 196 [2021-12-22 12:01:59,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:01:59,777 INFO L225 Difference]: With dead ends: 4337 [2021-12-22 12:01:59,777 INFO L226 Difference]: Without dead ends: 3332 [2021-12-22 12:01:59,779 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 [2021-12-22 12:01:59,779 INFO L933 BasicCegarLoop]: 1430 mSDtfsCounter, 286 mSDsluCounter, 1223 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 2653 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 [2021-12-22 12:01:59,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 2653 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 12:01:59,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3332 states. [2021-12-22 12:01:59,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3332 to 3330. [2021-12-22 12:01:59,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3330 states, 3329 states have (on average 1.699909882847702) internal successors, (5659), 3329 states have internal predecessors, (5659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:01:59,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3330 states to 3330 states and 5659 transitions. [2021-12-22 12:01:59,949 INFO L78 Accepts]: Start accepts. Automaton has 3330 states and 5659 transitions. Word has length 196 [2021-12-22 12:01:59,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:01:59,950 INFO L470 AbstractCegarLoop]: Abstraction has 3330 states and 5659 transitions. [2021-12-22 12:01:59,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:01:59,953 INFO L276 IsEmpty]: Start isEmpty. Operand 3330 states and 5659 transitions. [2021-12-22 12:01:59,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-12-22 12:01:59,955 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:01:59,955 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:01:59,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 12:01:59,955 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:01:59,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:01:59,956 INFO L85 PathProgramCache]: Analyzing trace with hash -939390388, now seen corresponding path program 1 times [2021-12-22 12:01:59,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:01:59,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114522018] [2021-12-22 12:01:59,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:01:59,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:01:59,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:02:00,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:02:00,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:02:00,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114522018] [2021-12-22 12:02:00,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114522018] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:02:00,101 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:02:00,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 12:02:00,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417800865] [2021-12-22 12:02:00,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:02:00,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 12:02:00,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:02:00,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 12:02:00,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 12:02:00,102 INFO L87 Difference]: Start difference. First operand 3330 states and 5659 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:02:00,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:02:00,321 INFO L93 Difference]: Finished difference Result 8626 states and 14523 transitions. [2021-12-22 12:02:00,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 12:02:00,322 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 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 196 [2021-12-22 12:02:00,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:02:00,340 INFO L225 Difference]: With dead ends: 8626 [2021-12-22 12:02:00,341 INFO L226 Difference]: Without dead ends: 5879 [2021-12-22 12:02:00,346 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 [2021-12-22 12:02:00,347 INFO L933 BasicCegarLoop]: 1403 mSDtfsCounter, 278 mSDsluCounter, 1237 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 2640 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 12:02:00,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 2640 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 12:02:00,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5879 states. [2021-12-22 12:02:00,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5879 to 5877. [2021-12-22 12:02:00,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5877 states, 5876 states have (on average 1.681926480599047) internal successors, (9883), 5876 states have internal predecessors, (9883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:02:00,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5877 states to 5877 states and 9883 transitions. [2021-12-22 12:02:00,550 INFO L78 Accepts]: Start accepts. Automaton has 5877 states and 9883 transitions. Word has length 196 [2021-12-22 12:02:00,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:02:00,551 INFO L470 AbstractCegarLoop]: Abstraction has 5877 states and 9883 transitions. [2021-12-22 12:02:00,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:02:00,551 INFO L276 IsEmpty]: Start isEmpty. Operand 5877 states and 9883 transitions. [2021-12-22 12:02:00,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-12-22 12:02:00,554 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:02:00,554 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:02:00,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 12:02:00,555 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:02:00,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:02:00,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1438127064, now seen corresponding path program 1 times [2021-12-22 12:02:00,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:02:00,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030618104] [2021-12-22 12:02:00,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:02:00,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:02:00,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:02:00,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:02:00,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:02:00,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030618104] [2021-12-22 12:02:00,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030618104] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:02:00,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:02:00,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 12:02:00,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717287673] [2021-12-22 12:02:00,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:02:00,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 12:02:00,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:02:00,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 12:02:00,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 12:02:00,670 INFO L87 Difference]: Start difference. First operand 5877 states and 9883 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:02:00,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:02:00,965 INFO L93 Difference]: Finished difference Result 10823 states and 18189 transitions. [2021-12-22 12:02:00,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 12:02:00,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 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 200 [2021-12-22 12:02:00,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:02:01,047 INFO L225 Difference]: With dead ends: 10823 [2021-12-22 12:02:01,048 INFO L226 Difference]: Without dead ends: 8076 [2021-12-22 12:02:01,055 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 [2021-12-22 12:02:01,057 INFO L933 BasicCegarLoop]: 1394 mSDtfsCounter, 279 mSDsluCounter, 1224 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 2618 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 [2021-12-22 12:02:01,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 2618 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 12:02:01,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8076 states. [2021-12-22 12:02:01,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8076 to 8074. [2021-12-22 12:02:01,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8074 states, 8073 states have (on average 1.6780626780626782) internal successors, (13547), 8073 states have internal predecessors, (13547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:02:01,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8074 states to 8074 states and 13547 transitions. [2021-12-22 12:02:01,454 INFO L78 Accepts]: Start accepts. Automaton has 8074 states and 13547 transitions. Word has length 200 [2021-12-22 12:02:01,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:02:01,455 INFO L470 AbstractCegarLoop]: Abstraction has 8074 states and 13547 transitions. [2021-12-22 12:02:01,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:02:01,456 INFO L276 IsEmpty]: Start isEmpty. Operand 8074 states and 13547 transitions. [2021-12-22 12:02:01,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-12-22 12:02:01,458 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:02:01,458 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:02:01,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 12:02:01,459 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:02:01,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:02:01,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1388814671, now seen corresponding path program 1 times [2021-12-22 12:02:01,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:02:01,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972320024] [2021-12-22 12:02:01,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:02:01,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:02:01,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:02:01,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:02:01,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:02:01,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972320024] [2021-12-22 12:02:01,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972320024] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:02:01,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:02:01,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 12:02:01,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985703763] [2021-12-22 12:02:01,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:02:01,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 12:02:01,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:02:01,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 12:02:01,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 12:02:01,570 INFO L87 Difference]: Start difference. First operand 8074 states and 13547 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:02:02,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:02:02,608 INFO L93 Difference]: Finished difference Result 22370 states and 37291 transitions. [2021-12-22 12:02:02,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 12:02:02,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 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 200 [2021-12-22 12:02:02,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:02:02,644 INFO L225 Difference]: With dead ends: 22370 [2021-12-22 12:02:02,644 INFO L226 Difference]: Without dead ends: 14925 [2021-12-22 12:02:02,658 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 [2021-12-22 12:02:02,658 INFO L933 BasicCegarLoop]: 1368 mSDtfsCounter, 271 mSDsluCounter, 1238 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 2606 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 12:02:02,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [271 Valid, 2606 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 12:02:02,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14925 states. [2021-12-22 12:02:03,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14925 to 14923. [2021-12-22 12:02:03,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14923 states, 14922 states have (on average 1.6617745610507975) internal successors, (24797), 14922 states have internal predecessors, (24797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:02:03,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14923 states to 14923 states and 24797 transitions. [2021-12-22 12:02:03,299 INFO L78 Accepts]: Start accepts. Automaton has 14923 states and 24797 transitions. Word has length 200 [2021-12-22 12:02:03,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:02:03,300 INFO L470 AbstractCegarLoop]: Abstraction has 14923 states and 24797 transitions. [2021-12-22 12:02:03,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:02:03,300 INFO L276 IsEmpty]: Start isEmpty. Operand 14923 states and 24797 transitions. [2021-12-22 12:02:03,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-12-22 12:02:03,302 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:02:03,302 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:02:03,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 12:02:03,304 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:02:03,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:02:03,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1584670309, now seen corresponding path program 1 times [2021-12-22 12:02:03,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:02:03,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615544402] [2021-12-22 12:02:03,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:02:03,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:02:03,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:02:03,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:02:03,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:02:03,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615544402] [2021-12-22 12:02:03,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615544402] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:02:03,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:02:03,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 12:02:03,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271549238] [2021-12-22 12:02:03,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:02:03,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 12:02:03,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:02:03,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 12:02:03,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 12:02:03,384 INFO L87 Difference]: Start difference. First operand 14923 states and 24797 transitions. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:02:04,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:02:04,179 INFO L93 Difference]: Finished difference Result 28077 states and 46723 transitions. [2021-12-22 12:02:04,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 12:02:04,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 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 204 [2021-12-22 12:02:04,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:02:04,227 INFO L225 Difference]: With dead ends: 28077 [2021-12-22 12:02:04,228 INFO L226 Difference]: Without dead ends: 20632 [2021-12-22 12:02:04,248 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 [2021-12-22 12:02:04,248 INFO L933 BasicCegarLoop]: 1358 mSDtfsCounter, 272 mSDsluCounter, 1225 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 2583 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 [2021-12-22 12:02:04,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 2583 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 12:02:04,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20632 states. [2021-12-22 12:02:05,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20632 to 20630. [2021-12-22 12:02:05,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20630 states, 20629 states have (on average 1.6591691308352319) internal successors, (34227), 20629 states have internal predecessors, (34227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:02:05,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20630 states to 20630 states and 34227 transitions. [2021-12-22 12:02:05,182 INFO L78 Accepts]: Start accepts. Automaton has 20630 states and 34227 transitions. Word has length 204 [2021-12-22 12:02:05,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:02:05,182 INFO L470 AbstractCegarLoop]: Abstraction has 20630 states and 34227 transitions. [2021-12-22 12:02:05,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:02:05,183 INFO L276 IsEmpty]: Start isEmpty. Operand 20630 states and 34227 transitions. [2021-12-22 12:02:05,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-12-22 12:02:05,185 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:02:05,185 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:02:05,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 12:02:05,186 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:02:05,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:02:05,187 INFO L85 PathProgramCache]: Analyzing trace with hash -247447380, now seen corresponding path program 1 times [2021-12-22 12:02:05,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:02:05,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835573300] [2021-12-22 12:02:05,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:02:05,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:02:05,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:02:05,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:02:05,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:02:05,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835573300] [2021-12-22 12:02:05,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835573300] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:02:05,302 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:02:05,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:02:05,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622298676] [2021-12-22 12:02:05,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:02:05,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:02:05,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:02:05,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:02:05,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:02:05,304 INFO L87 Difference]: Start difference. First operand 20630 states and 34227 transitions. Second operand has 7 states, 7 states have (on average 29.142857142857142) internal successors, (204), 7 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:02:11,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:02:11,381 INFO L93 Difference]: Finished difference Result 152827 states and 254674 transitions. [2021-12-22 12:02:11,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-22 12:02:11,394 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 29.142857142857142) internal successors, (204), 7 states have internal predecessors, (204), 0 states have call successors, (0), 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 204 [2021-12-22 12:02:11,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:02:11,898 INFO L225 Difference]: With dead ends: 152827 [2021-12-22 12:02:11,899 INFO L226 Difference]: Without dead ends: 132872 [2021-12-22 12:02:11,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-12-22 12:02:11,979 INFO L933 BasicCegarLoop]: 1259 mSDtfsCounter, 3735 mSDsluCounter, 9320 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3735 SdHoareTripleChecker+Valid, 10579 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 12:02:11,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3735 Valid, 10579 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 12:02:12,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132872 states. [2021-12-22 12:02:15,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132872 to 40288. [2021-12-22 12:02:15,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40288 states, 40287 states have (on average 1.6533124829349417) internal successors, (66607), 40287 states have internal predecessors, (66607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:02:16,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40288 states to 40288 states and 66607 transitions. [2021-12-22 12:02:16,001 INFO L78 Accepts]: Start accepts. Automaton has 40288 states and 66607 transitions. Word has length 204 [2021-12-22 12:02:16,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:02:16,001 INFO L470 AbstractCegarLoop]: Abstraction has 40288 states and 66607 transitions. [2021-12-22 12:02:16,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.142857142857142) internal successors, (204), 7 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:02:16,002 INFO L276 IsEmpty]: Start isEmpty. Operand 40288 states and 66607 transitions. [2021-12-22 12:02:16,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-12-22 12:02:16,004 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:02:16,004 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:02:16,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-22 12:02:16,004 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:02:16,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:02:16,005 INFO L85 PathProgramCache]: Analyzing trace with hash 847446003, now seen corresponding path program 1 times [2021-12-22 12:02:16,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:02:16,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518932205] [2021-12-22 12:02:16,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:02:16,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:02:16,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:02:16,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:02:16,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:02:16,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518932205] [2021-12-22 12:02:16,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518932205] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:02:16,087 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:02:16,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 12:02:16,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096238065] [2021-12-22 12:02:16,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:02:16,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 12:02:16,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:02:16,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 12:02:16,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 12:02:16,089 INFO L87 Difference]: Start difference. First operand 40288 states and 66607 transitions. Second operand has 4 states, 4 states have (on average 51.25) internal successors, (205), 4 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:02:21,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:02:21,950 INFO L93 Difference]: Finished difference Result 132051 states and 219052 transitions. [2021-12-22 12:02:21,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 12:02:21,951 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.25) internal successors, (205), 4 states have internal predecessors, (205), 0 states have call successors, (0), 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 205 [2021-12-22 12:02:21,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:02:22,233 INFO L225 Difference]: With dead ends: 132051 [2021-12-22 12:02:22,233 INFO L226 Difference]: Without dead ends: 92486 [2021-12-22 12:02:22,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 12:02:22,299 INFO L933 BasicCegarLoop]: 1256 mSDtfsCounter, 939 mSDsluCounter, 2789 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 4045 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 12:02:22,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [939 Valid, 4045 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 12:02:22,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92486 states. [2021-12-22 12:02:27,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92486 to 66278. [2021-12-22 12:02:27,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66278 states, 66277 states have (on average 1.653891998732592) internal successors, (109615), 66277 states have internal predecessors, (109615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:02:27,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66278 states to 66278 states and 109615 transitions. [2021-12-22 12:02:27,460 INFO L78 Accepts]: Start accepts. Automaton has 66278 states and 109615 transitions. Word has length 205 [2021-12-22 12:02:27,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:02:27,462 INFO L470 AbstractCegarLoop]: Abstraction has 66278 states and 109615 transitions. [2021-12-22 12:02:27,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.25) internal successors, (205), 4 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:02:27,462 INFO L276 IsEmpty]: Start isEmpty. Operand 66278 states and 109615 transitions. [2021-12-22 12:02:27,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-12-22 12:02:27,466 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:02:27,466 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:02:27,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-22 12:02:27,467 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:02:27,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:02:27,467 INFO L85 PathProgramCache]: Analyzing trace with hash -258860870, now seen corresponding path program 1 times [2021-12-22 12:02:27,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:02:27,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562349571] [2021-12-22 12:02:27,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:02:27,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:02:27,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:02:27,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:02:27,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:02:27,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562349571] [2021-12-22 12:02:27,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562349571] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:02:27,533 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:02:27,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 12:02:27,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196359653] [2021-12-22 12:02:27,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:02:27,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 12:02:27,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:02:27,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 12:02:27,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 12:02:27,535 INFO L87 Difference]: Start difference. First operand 66278 states and 109615 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)