./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0b2744f3415dbb18037af957678e462154c9b5d1903565ea0dc58b30d01826b2 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 01:37:52,159 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 01:37:52,161 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 01:37:52,208 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 01:37:52,208 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 01:37:52,212 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 01:37:52,213 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 01:37:52,215 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 01:37:52,217 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 01:37:52,219 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 01:37:52,220 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 01:37:52,221 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 01:37:52,221 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 01:37:52,225 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 01:37:52,226 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 01:37:52,227 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 01:37:52,230 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 01:37:52,231 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 01:37:52,232 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 01:37:52,233 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 01:37:52,237 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 01:37:52,240 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 01:37:52,241 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 01:37:52,241 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 01:37:52,243 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 01:37:52,244 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 01:37:52,244 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 01:37:52,245 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 01:37:52,246 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 01:37:52,246 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 01:37:52,246 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 01:37:52,247 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 01:37:52,248 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 01:37:52,250 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 01:37:52,251 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 01:37:52,251 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 01:37:52,251 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 01:37:52,252 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 01:37:52,252 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 01:37:52,252 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 01:37:52,253 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 01:37:52,254 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-28 01:37:52,271 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 01:37:52,272 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 01:37:52,273 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 01:37:52,274 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 01:37:52,274 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 01:37:52,274 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 01:37:52,275 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 01:37:52,276 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 01:37:52,276 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 01:37:52,276 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 01:37:52,276 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 01:37:52,277 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 01:37:52,277 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 01:37:52,277 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 01:37:52,277 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 01:37:52,277 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 01:37:52,277 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 01:37:52,277 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 01:37:52,278 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 01:37:52,278 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 01:37:52,278 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 01:37:52,278 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 01:37:52,278 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 01:37:52,278 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 01:37:52,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 01:37:52,279 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 01:37:52,279 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 01:37:52,279 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 01:37:52,279 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 01:37:52,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 01:37:52,279 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 01:37:52,280 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 01:37:52,280 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 01:37:52,280 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b2744f3415dbb18037af957678e462154c9b5d1903565ea0dc58b30d01826b2 [2021-12-28 01:37:52,538 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 01:37:52,559 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 01:37:52,561 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 01:37:52,562 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 01:37:52,563 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 01:37:52,564 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2021-12-28 01:37:52,606 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e25549f06/7a81644a69e9477bb5bcc4240428885a/FLAG633a4e4a6 [2021-12-28 01:37:53,092 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 01:37:53,093 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2021-12-28 01:37:53,110 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e25549f06/7a81644a69e9477bb5bcc4240428885a/FLAG633a4e4a6 [2021-12-28 01:37:53,121 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e25549f06/7a81644a69e9477bb5bcc4240428885a [2021-12-28 01:37:53,123 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 01:37:53,124 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 01:37:53,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 01:37:53,124 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 01:37:53,127 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 01:37:53,128 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 01:37:53" (1/1) ... [2021-12-28 01:37:53,129 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34ba56a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:37:53, skipping insertion in model container [2021-12-28 01:37:53,129 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 01:37:53" (1/1) ... [2021-12-28 01:37:53,134 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 01:37:53,213 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 01:37:53,657 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_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c[34568,34581] [2021-12-28 01:37:53,751 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 01:37:53,769 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 01:37:54,015 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_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c[34568,34581] [2021-12-28 01:37:54,098 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 01:37:54,112 INFO L208 MainTranslator]: Completed translation [2021-12-28 01:37:54,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:37:54 WrapperNode [2021-12-28 01:37:54,113 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 01:37:54,114 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 01:37:54,114 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 01:37:54,114 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 01:37:54,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:37:54" (1/1) ... [2021-12-28 01:37:54,146 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:37:54" (1/1) ... [2021-12-28 01:37:54,218 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2889 [2021-12-28 01:37:54,219 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 01:37:54,220 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 01:37:54,220 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 01:37:54,220 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 01:37:54,226 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:37:54" (1/1) ... [2021-12-28 01:37:54,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:37:54" (1/1) ... [2021-12-28 01:37:54,234 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:37:54" (1/1) ... [2021-12-28 01:37:54,235 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:37:54" (1/1) ... [2021-12-28 01:37:54,259 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:37:54" (1/1) ... [2021-12-28 01:37:54,275 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:37:54" (1/1) ... [2021-12-28 01:37:54,279 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:37:54" (1/1) ... [2021-12-28 01:37:54,286 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 01:37:54,286 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 01:37:54,286 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 01:37:54,287 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 01:37:54,287 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:37:54" (1/1) ... [2021-12-28 01:37:54,291 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 01:37:54,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 01:37:54,316 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) [2021-12-28 01:37:54,337 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 [2021-12-28 01:37:54,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 01:37:54,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 01:37:54,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 01:37:54,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 01:37:54,523 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 01:37:54,524 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 01:37:55,786 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 01:37:55,802 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 01:37:55,802 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-28 01:37:55,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 01:37:55 BoogieIcfgContainer [2021-12-28 01:37:55,805 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 01:37:55,806 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 01:37:55,806 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 01:37:55,808 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 01:37:55,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 01:37:53" (1/3) ... [2021-12-28 01:37:55,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67831503 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 01:37:55, skipping insertion in model container [2021-12-28 01:37:55,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:37:54" (2/3) ... [2021-12-28 01:37:55,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67831503 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 01:37:55, skipping insertion in model container [2021-12-28 01:37:55,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 01:37:55" (3/3) ... [2021-12-28 01:37:55,811 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2021-12-28 01:37:55,817 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 01:37:55,817 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 01:37:55,862 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 01:37:55,868 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 [2021-12-28 01:37:55,869 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 01:37:55,895 INFO L276 IsEmpty]: Start isEmpty. Operand has 771 states, 769 states have (on average 1.786736020806242) internal successors, (1374), 770 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:37:55,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2021-12-28 01:37:55,918 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:37:55,918 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:37:55,919 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:37:55,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:37:55,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1478878914, now seen corresponding path program 1 times [2021-12-28 01:37:55,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:37:55,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596496531] [2021-12-28 01:37:55,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:37:55,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:37:56,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:37:56,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:37:56,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:37:56,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596496531] [2021-12-28 01:37:56,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596496531] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:37:56,536 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:37:56,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 01:37:56,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845299753] [2021-12-28 01:37:56,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:37:56,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 01:37:56,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:37:56,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 01:37:56,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:37:56,598 INFO L87 Difference]: Start difference. First operand has 771 states, 769 states have (on average 1.786736020806242) internal successors, (1374), 770 states have internal predecessors, (1374), 0 states have call successors, (0), 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 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:37:56,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:37:56,791 INFO L93 Difference]: Finished difference Result 1385 states and 2441 transitions. [2021-12-28 01:37:56,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 01:37:56,793 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 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 316 [2021-12-28 01:37:56,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:37:56,813 INFO L225 Difference]: With dead ends: 1385 [2021-12-28 01:37:56,814 INFO L226 Difference]: Without dead ends: 1215 [2021-12-28 01:37:56,817 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 [2021-12-28 01:37:56,822 INFO L933 BasicCegarLoop]: 1313 mSDtfsCounter, 804 mSDsluCounter, 1049 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 2362 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 01:37:56,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [804 Valid, 2362 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 01:37:56,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2021-12-28 01:37:56,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1213. [2021-12-28 01:37:56,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1213 states, 1212 states have (on average 1.5627062706270627) internal successors, (1894), 1212 states have internal predecessors, (1894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:37:56,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 1894 transitions. [2021-12-28 01:37:56,914 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 1894 transitions. Word has length 316 [2021-12-28 01:37:56,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:37:56,917 INFO L470 AbstractCegarLoop]: Abstraction has 1213 states and 1894 transitions. [2021-12-28 01:37:56,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:37:56,918 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 1894 transitions. [2021-12-28 01:37:56,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2021-12-28 01:37:56,924 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:37:56,924 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:37:56,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 01:37:56,925 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:37:56,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:37:56,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1649206099, now seen corresponding path program 1 times [2021-12-28 01:37:56,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:37:56,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483544791] [2021-12-28 01:37:56,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:37:56,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:37:57,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:37:57,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:37:57,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:37:57,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483544791] [2021-12-28 01:37:57,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483544791] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:37:57,372 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:37:57,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 01:37:57,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218507330] [2021-12-28 01:37:57,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:37:57,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 01:37:57,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:37:57,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 01:37:57,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 01:37:57,377 INFO L87 Difference]: Start difference. First operand 1213 states and 1894 transitions. Second operand has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:37:57,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:37:57,559 INFO L93 Difference]: Finished difference Result 3587 states and 5593 transitions. [2021-12-28 01:37:57,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 01:37:57,560 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 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 316 [2021-12-28 01:37:57,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:37:57,569 INFO L225 Difference]: With dead ends: 3587 [2021-12-28 01:37:57,569 INFO L226 Difference]: Without dead ends: 2385 [2021-12-28 01:37:57,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 01:37:57,577 INFO L933 BasicCegarLoop]: 1812 mSDtfsCounter, 2779 mSDsluCounter, 1137 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2779 SdHoareTripleChecker+Valid, 2949 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 01:37:57,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2779 Valid, 2949 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 01:37:57,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2385 states. [2021-12-28 01:37:57,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2385 to 2383. [2021-12-28 01:37:57,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2383 states, 2382 states have (on average 1.5528967254408061) internal successors, (3699), 2382 states have internal predecessors, (3699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:37:57,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2383 states to 2383 states and 3699 transitions. [2021-12-28 01:37:57,694 INFO L78 Accepts]: Start accepts. Automaton has 2383 states and 3699 transitions. Word has length 316 [2021-12-28 01:37:57,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:37:57,695 INFO L470 AbstractCegarLoop]: Abstraction has 2383 states and 3699 transitions. [2021-12-28 01:37:57,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:37:57,695 INFO L276 IsEmpty]: Start isEmpty. Operand 2383 states and 3699 transitions. [2021-12-28 01:37:57,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2021-12-28 01:37:57,700 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:37:57,701 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:37:57,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 01:37:57,703 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:37:57,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:37:57,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1029364850, now seen corresponding path program 1 times [2021-12-28 01:37:57,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:37:57,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541208351] [2021-12-28 01:37:57,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:37:57,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:37:57,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:37:57,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:37:57,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:37:57,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541208351] [2021-12-28 01:37:57,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541208351] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:37:57,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:37:57,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 01:37:57,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812650287] [2021-12-28 01:37:57,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:37:57,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 01:37:57,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:37:57,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 01:37:57,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:37:57,791 INFO L87 Difference]: Start difference. First operand 2383 states and 3699 transitions. Second operand has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:37:57,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:37:57,995 INFO L93 Difference]: Finished difference Result 7112 states and 11034 transitions. [2021-12-28 01:37:57,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 01:37:57,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 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 318 [2021-12-28 01:37:57,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:37:58,012 INFO L225 Difference]: With dead ends: 7112 [2021-12-28 01:37:58,012 INFO L226 Difference]: Without dead ends: 4750 [2021-12-28 01:37:58,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:37:58,022 INFO L933 BasicCegarLoop]: 2380 mSDtfsCounter, 1187 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1187 SdHoareTripleChecker+Valid, 3568 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:37:58,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1187 Valid, 3568 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:37:58,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4750 states. [2021-12-28 01:37:58,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4750 to 2396. [2021-12-28 01:37:58,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2396 states, 2395 states have (on average 1.552400835073069) internal successors, (3718), 2395 states have internal predecessors, (3718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:37:58,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2396 states to 2396 states and 3718 transitions. [2021-12-28 01:37:58,203 INFO L78 Accepts]: Start accepts. Automaton has 2396 states and 3718 transitions. Word has length 318 [2021-12-28 01:37:58,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:37:58,203 INFO L470 AbstractCegarLoop]: Abstraction has 2396 states and 3718 transitions. [2021-12-28 01:37:58,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:37:58,204 INFO L276 IsEmpty]: Start isEmpty. Operand 2396 states and 3718 transitions. [2021-12-28 01:37:58,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2021-12-28 01:37:58,208 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:37:58,209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:37:58,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 01:37:58,209 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:37:58,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:37:58,210 INFO L85 PathProgramCache]: Analyzing trace with hash -528855671, now seen corresponding path program 1 times [2021-12-28 01:37:58,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:37:58,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071038354] [2021-12-28 01:37:58,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:37:58,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:37:58,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:37:58,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:37:58,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:37:58,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071038354] [2021-12-28 01:37:58,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071038354] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:37:58,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:37:58,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 01:37:58,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102307376] [2021-12-28 01:37:58,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:37:58,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 01:37:58,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:37:58,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 01:37:58,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:37:58,313 INFO L87 Difference]: Start difference. First operand 2396 states and 3718 transitions. Second operand has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:37:58,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:37:58,598 INFO L93 Difference]: Finished difference Result 6949 states and 10745 transitions. [2021-12-28 01:37:58,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 01:37:58,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 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 318 [2021-12-28 01:37:58,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:37:58,614 INFO L225 Difference]: With dead ends: 6949 [2021-12-28 01:37:58,614 INFO L226 Difference]: Without dead ends: 4691 [2021-12-28 01:37:58,618 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 [2021-12-28 01:37:58,618 INFO L933 BasicCegarLoop]: 2325 mSDtfsCounter, 1059 mSDsluCounter, 1137 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1059 SdHoareTripleChecker+Valid, 3462 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:37:58,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1059 Valid, 3462 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:37:58,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4691 states. [2021-12-28 01:37:58,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4691 to 4689. [2021-12-28 01:37:58,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4689 states, 4688 states have (on average 1.54330204778157) internal successors, (7235), 4688 states have internal predecessors, (7235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:37:58,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4689 states to 4689 states and 7235 transitions. [2021-12-28 01:37:58,916 INFO L78 Accepts]: Start accepts. Automaton has 4689 states and 7235 transitions. Word has length 318 [2021-12-28 01:37:58,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:37:58,916 INFO L470 AbstractCegarLoop]: Abstraction has 4689 states and 7235 transitions. [2021-12-28 01:37:58,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:37:58,917 INFO L276 IsEmpty]: Start isEmpty. Operand 4689 states and 7235 transitions. [2021-12-28 01:37:58,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2021-12-28 01:37:58,925 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:37:58,925 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:37:58,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 01:37:58,925 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:37:58,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:37:58,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1432087453, now seen corresponding path program 1 times [2021-12-28 01:37:58,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:37:58,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406174173] [2021-12-28 01:37:58,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:37:58,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:37:58,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:37:58,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:37:58,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:37:58,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406174173] [2021-12-28 01:37:58,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406174173] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:37:58,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:37:58,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 01:37:58,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311636766] [2021-12-28 01:37:58,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:37:58,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 01:37:58,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:37:58,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 01:37:58,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:37:58,975 INFO L87 Difference]: Start difference. First operand 4689 states and 7235 transitions. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:37:59,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:37:59,457 INFO L93 Difference]: Finished difference Result 13962 states and 21526 transitions. [2021-12-28 01:37:59,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 01:37:59,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 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 319 [2021-12-28 01:37:59,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:37:59,484 INFO L225 Difference]: With dead ends: 13962 [2021-12-28 01:37:59,484 INFO L226 Difference]: Without dead ends: 9329 [2021-12-28 01:37:59,490 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 [2021-12-28 01:37:59,491 INFO L933 BasicCegarLoop]: 2379 mSDtfsCounter, 1182 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1182 SdHoareTripleChecker+Valid, 3567 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:37:59,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1182 Valid, 3567 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:37:59,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9329 states. [2021-12-28 01:37:59,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9329 to 4707. [2021-12-28 01:37:59,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4707 states, 4706 states have (on average 1.5418614534636634) internal successors, (7256), 4706 states have internal predecessors, (7256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:37:59,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4707 states to 4707 states and 7256 transitions. [2021-12-28 01:37:59,792 INFO L78 Accepts]: Start accepts. Automaton has 4707 states and 7256 transitions. Word has length 319 [2021-12-28 01:37:59,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:37:59,793 INFO L470 AbstractCegarLoop]: Abstraction has 4707 states and 7256 transitions. [2021-12-28 01:37:59,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:37:59,793 INFO L276 IsEmpty]: Start isEmpty. Operand 4707 states and 7256 transitions. [2021-12-28 01:37:59,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2021-12-28 01:37:59,801 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:37:59,801 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:37:59,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 01:37:59,801 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:37:59,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:37:59,802 INFO L85 PathProgramCache]: Analyzing trace with hash -131705436, now seen corresponding path program 1 times [2021-12-28 01:37:59,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:37:59,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070541088] [2021-12-28 01:37:59,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:37:59,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:37:59,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:37:59,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:37:59,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:37:59,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070541088] [2021-12-28 01:37:59,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070541088] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:37:59,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:37:59,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 01:37:59,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890465890] [2021-12-28 01:37:59,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:37:59,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 01:37:59,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:37:59,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 01:37:59,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:37:59,883 INFO L87 Difference]: Start difference. First operand 4707 states and 7256 transitions. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:38:00,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:38:00,478 INFO L93 Difference]: Finished difference Result 13598 states and 20881 transitions. [2021-12-28 01:38:00,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 01:38:00,479 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 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 320 [2021-12-28 01:38:00,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:38:00,512 INFO L225 Difference]: With dead ends: 13598 [2021-12-28 01:38:00,512 INFO L226 Difference]: Without dead ends: 9132 [2021-12-28 01:38:00,522 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 [2021-12-28 01:38:00,523 INFO L933 BasicCegarLoop]: 2332 mSDtfsCounter, 1053 mSDsluCounter, 1137 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1053 SdHoareTripleChecker+Valid, 3469 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:38:00,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1053 Valid, 3469 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:38:00,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9132 states. [2021-12-28 01:38:00,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9132 to 9130. [2021-12-28 01:38:01,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9130 states, 9129 states have (on average 1.5305071749370138) internal successors, (13972), 9129 states have internal predecessors, (13972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:38:01,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9130 states to 9130 states and 13972 transitions. [2021-12-28 01:38:01,029 INFO L78 Accepts]: Start accepts. Automaton has 9130 states and 13972 transitions. Word has length 320 [2021-12-28 01:38:01,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:38:01,029 INFO L470 AbstractCegarLoop]: Abstraction has 9130 states and 13972 transitions. [2021-12-28 01:38:01,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:38:01,030 INFO L276 IsEmpty]: Start isEmpty. Operand 9130 states and 13972 transitions. [2021-12-28 01:38:01,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2021-12-28 01:38:01,043 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:38:01,044 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:38:01,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 01:38:01,044 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:38:01,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:38:01,045 INFO L85 PathProgramCache]: Analyzing trace with hash 570948353, now seen corresponding path program 1 times [2021-12-28 01:38:01,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:38:01,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562712184] [2021-12-28 01:38:01,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:38:01,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:38:01,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:38:01,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:38:01,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:38:01,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562712184] [2021-12-28 01:38:01,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562712184] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:38:01,273 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:38:01,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 01:38:01,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722623454] [2021-12-28 01:38:01,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:38:01,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 01:38:01,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:38:01,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 01:38:01,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 01:38:01,275 INFO L87 Difference]: Start difference. First operand 9130 states and 13972 transitions. Second operand has 5 states, 5 states have (on average 64.0) internal successors, (320), 5 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:38:02,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:38:02,290 INFO L93 Difference]: Finished difference Result 26812 states and 40949 transitions. [2021-12-28 01:38:02,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 01:38:02,300 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 64.0) internal successors, (320), 5 states have internal predecessors, (320), 0 states have call successors, (0), 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 320 [2021-12-28 01:38:02,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:38:02,334 INFO L225 Difference]: With dead ends: 26812 [2021-12-28 01:38:02,334 INFO L226 Difference]: Without dead ends: 17737 [2021-12-28 01:38:02,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 01:38:02,351 INFO L933 BasicCegarLoop]: 1857 mSDtfsCounter, 3392 mSDsluCounter, 1137 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3392 SdHoareTripleChecker+Valid, 2994 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 01:38:02,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3392 Valid, 2994 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 01:38:02,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17737 states. [2021-12-28 01:38:03,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17737 to 17735. [2021-12-28 01:38:03,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17735 states, 17734 states have (on average 1.5184955452802527) internal successors, (26929), 17734 states have internal predecessors, (26929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:38:03,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17735 states to 17735 states and 26929 transitions. [2021-12-28 01:38:03,509 INFO L78 Accepts]: Start accepts. Automaton has 17735 states and 26929 transitions. Word has length 320 [2021-12-28 01:38:03,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:38:03,509 INFO L470 AbstractCegarLoop]: Abstraction has 17735 states and 26929 transitions. [2021-12-28 01:38:03,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.0) internal successors, (320), 5 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:38:03,510 INFO L276 IsEmpty]: Start isEmpty. Operand 17735 states and 26929 transitions. [2021-12-28 01:38:03,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2021-12-28 01:38:03,535 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:38:03,535 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:38:03,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 01:38:03,535 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:38:03,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:38:03,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1126698245, now seen corresponding path program 1 times [2021-12-28 01:38:03,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:38:03,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225762012] [2021-12-28 01:38:03,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:38:03,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:38:03,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:38:03,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:38:03,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:38:03,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225762012] [2021-12-28 01:38:03,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225762012] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:38:03,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:38:03,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 01:38:03,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707359452] [2021-12-28 01:38:03,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:38:03,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 01:38:03,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:38:03,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 01:38:03,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 01:38:03,727 INFO L87 Difference]: Start difference. First operand 17735 states and 26929 transitions. Second operand has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:38:05,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:38:05,776 INFO L93 Difference]: Finished difference Result 52147 states and 79039 transitions. [2021-12-28 01:38:05,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 01:38:05,777 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 322 [2021-12-28 01:38:05,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:38:05,859 INFO L225 Difference]: With dead ends: 52147 [2021-12-28 01:38:05,860 INFO L226 Difference]: Without dead ends: 34609 [2021-12-28 01:38:05,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 01:38:05,890 INFO L933 BasicCegarLoop]: 1771 mSDtfsCounter, 2728 mSDsluCounter, 1127 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2728 SdHoareTripleChecker+Valid, 2898 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 01:38:05,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2728 Valid, 2898 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 01:38:05,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34609 states. [2021-12-28 01:38:08,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34609 to 34607. [2021-12-28 01:38:08,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34607 states, 34606 states have (on average 1.5063283823614402) internal successors, (52128), 34606 states have internal predecessors, (52128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:38:08,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34607 states to 34607 states and 52128 transitions. [2021-12-28 01:38:08,380 INFO L78 Accepts]: Start accepts. Automaton has 34607 states and 52128 transitions. Word has length 322 [2021-12-28 01:38:08,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:38:08,380 INFO L470 AbstractCegarLoop]: Abstraction has 34607 states and 52128 transitions. [2021-12-28 01:38:08,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:38:08,381 INFO L276 IsEmpty]: Start isEmpty. Operand 34607 states and 52128 transitions. [2021-12-28 01:38:08,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2021-12-28 01:38:08,438 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:38:08,438 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:38:08,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-28 01:38:08,439 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:38:08,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:38:08,439 INFO L85 PathProgramCache]: Analyzing trace with hash -36869400, now seen corresponding path program 1 times [2021-12-28 01:38:08,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:38:08,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897426706] [2021-12-28 01:38:08,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:38:08,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:38:08,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:38:08,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:38:08,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:38:08,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897426706] [2021-12-28 01:38:08,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897426706] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:38:08,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:38:08,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 01:38:08,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404573629] [2021-12-28 01:38:08,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:38:08,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 01:38:08,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:38:08,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 01:38:08,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:38:08,523 INFO L87 Difference]: Start difference. First operand 34607 states and 52128 transitions. Second operand has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:38:13,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:38:13,067 INFO L93 Difference]: Finished difference Result 101397 states and 152320 transitions. [2021-12-28 01:38:13,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 01:38:13,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 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 324 [2021-12-28 01:38:13,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:38:13,202 INFO L225 Difference]: With dead ends: 101397 [2021-12-28 01:38:13,203 INFO L226 Difference]: Without dead ends: 67683 [2021-12-28 01:38:13,243 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 [2021-12-28 01:38:13,245 INFO L933 BasicCegarLoop]: 2288 mSDtfsCounter, 1033 mSDsluCounter, 1137 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1033 SdHoareTripleChecker+Valid, 3425 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:38:13,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1033 Valid, 3425 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:38:13,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67683 states. [2021-12-28 01:38:17,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67683 to 67681. [2021-12-28 01:38:17,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67681 states, 67680 states have (on average 1.495065011820331) internal successors, (101186), 67680 states have internal predecessors, (101186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:38:18,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67681 states to 67681 states and 101186 transitions. [2021-12-28 01:38:18,169 INFO L78 Accepts]: Start accepts. Automaton has 67681 states and 101186 transitions. Word has length 324 [2021-12-28 01:38:18,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:38:18,169 INFO L470 AbstractCegarLoop]: Abstraction has 67681 states and 101186 transitions. [2021-12-28 01:38:18,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:38:18,169 INFO L276 IsEmpty]: Start isEmpty. Operand 67681 states and 101186 transitions. [2021-12-28 01:38:18,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2021-12-28 01:38:18,244 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:38:18,245 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:38:18,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-28 01:38:18,245 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:38:18,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:38:18,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1237423955, now seen corresponding path program 1 times [2021-12-28 01:38:18,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:38:18,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172268694] [2021-12-28 01:38:18,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:38:18,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:38:18,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:38:18,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:38:18,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:38:18,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172268694] [2021-12-28 01:38:18,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172268694] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:38:18,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:38:18,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 01:38:18,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404244438] [2021-12-28 01:38:18,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:38:18,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 01:38:18,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:38:18,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 01:38:18,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:38:18,294 INFO L87 Difference]: Start difference. First operand 67681 states and 101186 transitions. Second operand has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:38:26,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:38:26,451 INFO L93 Difference]: Finished difference Result 202247 states and 302252 transitions. [2021-12-28 01:38:26,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 01:38:26,451 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 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 324 [2021-12-28 01:38:26,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:38:26,721 INFO L225 Difference]: With dead ends: 202247 [2021-12-28 01:38:26,721 INFO L226 Difference]: Without dead ends: 135009 [2021-12-28 01:38:26,783 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 [2021-12-28 01:38:26,783 INFO L933 BasicCegarLoop]: 2347 mSDtfsCounter, 1154 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1154 SdHoareTripleChecker+Valid, 3535 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:38:26,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1154 Valid, 3535 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:38:26,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135009 states. [2021-12-28 01:38:32,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135009 to 67871. [2021-12-28 01:38:32,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67871 states, 67870 states have (on average 1.4950051569176366) internal successors, (101466), 67870 states have internal predecessors, (101466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:38:32,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67871 states to 67871 states and 101466 transitions. [2021-12-28 01:38:32,333 INFO L78 Accepts]: Start accepts. Automaton has 67871 states and 101466 transitions. Word has length 324 [2021-12-28 01:38:32,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:38:32,335 INFO L470 AbstractCegarLoop]: Abstraction has 67871 states and 101466 transitions. [2021-12-28 01:38:32,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:38:32,335 INFO L276 IsEmpty]: Start isEmpty. Operand 67871 states and 101466 transitions. [2021-12-28 01:38:32,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2021-12-28 01:38:32,424 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:38:32,424 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:38:32,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-28 01:38:32,425 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:38:32,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:38:32,425 INFO L85 PathProgramCache]: Analyzing trace with hash -109574562, now seen corresponding path program 1 times [2021-12-28 01:38:32,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:38:32,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258960777] [2021-12-28 01:38:32,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:38:32,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:38:32,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:38:32,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:38:32,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:38:32,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258960777] [2021-12-28 01:38:32,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258960777] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:38:32,487 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:38:32,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 01:38:32,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001769444] [2021-12-28 01:38:32,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:38:32,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 01:38:32,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:38:32,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 01:38:32,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:38:32,489 INFO L87 Difference]: Start difference. First operand 67871 states and 101466 transitions. Second operand has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)