./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem12_label28.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3a877d22 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem12_label28.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 659b37265952a16fb6d0be01d182392fcf6fa60a0b92fef60d1f2fbbad338d83 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 09:39:26,060 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 09:39:26,062 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 09:39:26,086 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 09:39:26,086 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 09:39:26,087 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 09:39:26,088 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 09:39:26,090 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 09:39:26,091 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 09:39:26,092 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 09:39:26,093 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 09:39:26,094 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 09:39:26,095 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 09:39:26,096 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 09:39:26,097 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 09:39:26,098 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 09:39:26,099 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 09:39:26,100 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 09:39:26,101 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 09:39:26,103 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 09:39:26,104 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 09:39:26,106 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 09:39:26,106 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 09:39:26,107 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 09:39:26,109 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 09:39:26,110 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 09:39:26,110 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 09:39:26,111 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 09:39:26,112 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 09:39:26,112 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 09:39:26,113 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 09:39:26,113 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 09:39:26,114 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 09:39:26,115 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 09:39:26,116 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 09:39:26,116 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 09:39:26,117 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 09:39:26,117 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 09:39:26,118 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 09:39:26,118 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 09:39:26,119 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 09:39:26,120 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 09:39:26,138 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 09:39:26,138 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 09:39:26,139 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 09:39:26,139 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 09:39:26,140 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 09:39:26,140 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 09:39:26,141 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 09:39:26,141 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 09:39:26,141 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 09:39:26,141 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 09:39:26,142 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 09:39:26,142 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 09:39:26,142 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 09:39:26,142 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 09:39:26,143 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 09:39:26,144 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 09:39:26,144 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 09:39:26,144 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 09:39:26,145 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 09:39:26,145 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 09:39:26,145 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 09:39:26,145 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 09:39:26,146 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 09:39:26,146 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 09:39:26,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 09:39:26,146 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 09:39:26,147 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 09:39:26,147 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 09:39:26,148 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 09:39:26,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 09:39:26,148 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 09:39:26,148 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 09:39:26,149 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 09:39:26,149 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 09:39:26,149 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 659b37265952a16fb6d0be01d182392fcf6fa60a0b92fef60d1f2fbbad338d83 [2021-12-15 09:39:26,387 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 09:39:26,404 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 09:39:26,406 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 09:39:26,407 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 09:39:26,408 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 09:39:26,409 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem12_label28.c [2021-12-15 09:39:26,480 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9bef889b/5ab7f499d81c4a52ba28eaf1f5876539/FLAG26feeee8f [2021-12-15 09:39:27,031 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 09:39:27,032 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label28.c [2021-12-15 09:39:27,069 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9bef889b/5ab7f499d81c4a52ba28eaf1f5876539/FLAG26feeee8f [2021-12-15 09:39:27,231 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9bef889b/5ab7f499d81c4a52ba28eaf1f5876539 [2021-12-15 09:39:27,234 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 09:39:27,235 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 09:39:27,239 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 09:39:27,239 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 09:39:27,241 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 09:39:27,243 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:39:27" (1/1) ... [2021-12-15 09:39:27,244 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59371cda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:39:27, skipping insertion in model container [2021-12-15 09:39:27,244 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:39:27" (1/1) ... [2021-12-15 09:39:27,251 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 09:39:27,356 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 09:39:27,602 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/eca-rers2012/Problem12_label28.c[2824,2837] [2021-12-15 09:39:28,362 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 09:39:28,370 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 09:39:28,396 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/eca-rers2012/Problem12_label28.c[2824,2837] [2021-12-15 09:39:28,822 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 09:39:28,843 INFO L208 MainTranslator]: Completed translation [2021-12-15 09:39:28,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:39:28 WrapperNode [2021-12-15 09:39:28,844 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 09:39:28,845 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 09:39:28,845 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 09:39:28,845 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 09:39:28,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:39:28" (1/1) ... [2021-12-15 09:39:28,911 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:39:28" (1/1) ... [2021-12-15 09:39:29,224 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4757 [2021-12-15 09:39:29,224 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 09:39:29,225 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 09:39:29,225 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 09:39:29,226 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 09:39:29,233 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:39:28" (1/1) ... [2021-12-15 09:39:29,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:39:28" (1/1) ... [2021-12-15 09:39:29,335 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:39:28" (1/1) ... [2021-12-15 09:39:29,335 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:39:28" (1/1) ... [2021-12-15 09:39:29,566 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:39:28" (1/1) ... [2021-12-15 09:39:29,626 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:39:28" (1/1) ... [2021-12-15 09:39:29,676 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:39:28" (1/1) ... [2021-12-15 09:39:29,750 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 09:39:29,751 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 09:39:29,752 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 09:39:29,752 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 09:39:29,753 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:39:28" (1/1) ... [2021-12-15 09:39:29,760 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 09:39:29,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 09:39:29,784 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-15 09:39:29,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-15 09:39:29,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 09:39:29,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 09:39:29,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 09:39:29,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 09:39:29,910 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 09:39:29,911 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 09:39:33,161 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 09:39:33,178 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 09:39:33,191 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-15 09:39:33,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:39:33 BoogieIcfgContainer [2021-12-15 09:39:33,195 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 09:39:33,196 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 09:39:33,211 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 09:39:33,214 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 09:39:33,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 09:39:27" (1/3) ... [2021-12-15 09:39:33,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@109aac8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:39:33, skipping insertion in model container [2021-12-15 09:39:33,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:39:28" (2/3) ... [2021-12-15 09:39:33,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@109aac8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:39:33, skipping insertion in model container [2021-12-15 09:39:33,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:39:33" (3/3) ... [2021-12-15 09:39:33,216 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label28.c [2021-12-15 09:39:33,221 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 09:39:33,221 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 09:39:33,297 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 09:39:33,304 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 09:39:33,304 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 09:39:33,339 INFO L276 IsEmpty]: Start isEmpty. Operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:39:33,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-15 09:39:33,344 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:39:33,344 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] [2021-12-15 09:39:33,345 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:39:33,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:39:33,349 INFO L85 PathProgramCache]: Analyzing trace with hash -279853278, now seen corresponding path program 1 times [2021-12-15 09:39:33,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:39:33,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503929315] [2021-12-15 09:39:33,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:39:33,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:39:33,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:39:33,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 09:39:33,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:39:33,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503929315] [2021-12-15 09:39:33,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503929315] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:39:33,496 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 09:39:33,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 09:39:33,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136044915] [2021-12-15 09:39:33,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:39:33,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 09:39:33,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:39:33,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 09:39:33,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 09:39:33,532 INFO L87 Difference]: Start difference. First operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 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 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:39:37,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:39:37,058 INFO L93 Difference]: Finished difference Result 2388 states and 4629 transitions. [2021-12-15 09:39:37,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 09:39:37,061 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2021-12-15 09:39:37,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:39:37,088 INFO L225 Difference]: With dead ends: 2388 [2021-12-15 09:39:37,088 INFO L226 Difference]: Without dead ends: 1506 [2021-12-15 09:39:37,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 09:39:37,107 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 839 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2337 mSolverCounterSat, 1058 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 839 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 3395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1058 IncrementalHoareTripleChecker+Valid, 2337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-12-15 09:39:37,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [839 Valid, 102 Invalid, 3395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1058 Valid, 2337 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-12-15 09:39:37,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2021-12-15 09:39:37,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1506. [2021-12-15 09:39:37,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 1.869767441860465) internal successors, (2814), 1505 states have internal predecessors, (2814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:39:37,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2814 transitions. [2021-12-15 09:39:37,216 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2814 transitions. Word has length 20 [2021-12-15 09:39:37,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:39:37,216 INFO L470 AbstractCegarLoop]: Abstraction has 1506 states and 2814 transitions. [2021-12-15 09:39:37,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:39:37,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2814 transitions. [2021-12-15 09:39:37,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-15 09:39:37,222 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:39:37,222 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 09:39:37,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 09:39:37,223 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:39:37,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:39:37,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1771756332, now seen corresponding path program 1 times [2021-12-15 09:39:37,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:39:37,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642665858] [2021-12-15 09:39:37,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:39:37,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:39:37,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:39:37,381 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 09:39:37,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:39:37,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642665858] [2021-12-15 09:39:37,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642665858] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:39:37,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 09:39:37,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 09:39:37,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645865001] [2021-12-15 09:39:37,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:39:37,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 09:39:37,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:39:37,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 09:39:37,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 09:39:37,385 INFO L87 Difference]: Start difference. First operand 1506 states and 2814 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:39:40,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:39:40,508 INFO L93 Difference]: Finished difference Result 4512 states and 8437 transitions. [2021-12-15 09:39:40,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 09:39:40,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-12-15 09:39:40,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:39:40,521 INFO L225 Difference]: With dead ends: 4512 [2021-12-15 09:39:40,521 INFO L226 Difference]: Without dead ends: 3008 [2021-12-15 09:39:40,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 09:39:40,526 INFO L933 BasicCegarLoop]: 487 mSDtfsCounter, 726 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2269 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 2921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-15 09:39:40,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [726 Valid, 494 Invalid, 2921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2269 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-12-15 09:39:40,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2021-12-15 09:39:40,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 3008. [2021-12-15 09:39:40,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3008 states, 3007 states have (on average 1.5809777186564682) internal successors, (4754), 3007 states have internal predecessors, (4754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:39:40,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3008 states to 3008 states and 4754 transitions. [2021-12-15 09:39:40,586 INFO L78 Accepts]: Start accepts. Automaton has 3008 states and 4754 transitions. Word has length 93 [2021-12-15 09:39:40,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:39:40,587 INFO L470 AbstractCegarLoop]: Abstraction has 3008 states and 4754 transitions. [2021-12-15 09:39:40,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:39:40,588 INFO L276 IsEmpty]: Start isEmpty. Operand 3008 states and 4754 transitions. [2021-12-15 09:39:40,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-15 09:39:40,589 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:39:40,589 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 09:39:40,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-15 09:39:40,590 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:39:40,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:39:40,591 INFO L85 PathProgramCache]: Analyzing trace with hash 523294247, now seen corresponding path program 1 times [2021-12-15 09:39:40,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:39:40,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913223889] [2021-12-15 09:39:40,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:39:40,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:39:40,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:39:40,734 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 09:39:40,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:39:40,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913223889] [2021-12-15 09:39:40,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913223889] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:39:40,735 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 09:39:40,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 09:39:40,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049500315] [2021-12-15 09:39:40,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:39:40,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 09:39:40,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:39:40,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 09:39:40,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 09:39:40,737 INFO L87 Difference]: Start difference. First operand 3008 states and 4754 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:39:43,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:39:43,877 INFO L93 Difference]: Finished difference Result 6781 states and 10483 transitions. [2021-12-15 09:39:43,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 09:39:43,877 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2021-12-15 09:39:43,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:39:43,891 INFO L225 Difference]: With dead ends: 6781 [2021-12-15 09:39:43,891 INFO L226 Difference]: Without dead ends: 3775 [2021-12-15 09:39:43,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 09:39:43,897 INFO L933 BasicCegarLoop]: 697 mSDtfsCounter, 1361 mSDsluCounter, 948 mSDsCounter, 0 mSdLazyCounter, 2500 mSolverCounterSat, 393 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1361 SdHoareTripleChecker+Valid, 1645 SdHoareTripleChecker+Invalid, 2893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 393 IncrementalHoareTripleChecker+Valid, 2500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-15 09:39:43,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1361 Valid, 1645 Invalid, 2893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [393 Valid, 2500 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-12-15 09:39:43,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3775 states. [2021-12-15 09:39:43,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3775 to 3759. [2021-12-15 09:39:43,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3759 states, 3758 states have (on average 1.4664715274081959) internal successors, (5511), 3758 states have internal predecessors, (5511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:39:43,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3759 states to 3759 states and 5511 transitions. [2021-12-15 09:39:43,981 INFO L78 Accepts]: Start accepts. Automaton has 3759 states and 5511 transitions. Word has length 95 [2021-12-15 09:39:43,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:39:43,981 INFO L470 AbstractCegarLoop]: Abstraction has 3759 states and 5511 transitions. [2021-12-15 09:39:43,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:39:43,982 INFO L276 IsEmpty]: Start isEmpty. Operand 3759 states and 5511 transitions. [2021-12-15 09:39:43,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-12-15 09:39:43,992 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:39:43,993 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 09:39:43,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-15 09:39:43,993 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:39:43,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:39:43,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1860048002, now seen corresponding path program 1 times [2021-12-15 09:39:43,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:39:43,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309698720] [2021-12-15 09:39:43,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:39:43,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:39:44,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:39:44,184 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 09:39:44,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:39:44,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309698720] [2021-12-15 09:39:44,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309698720] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 09:39:44,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179487151] [2021-12-15 09:39:44,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:39:44,186 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 09:39:44,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 09:39:44,191 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 09:39:44,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-15 09:39:44,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:39:44,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-15 09:39:44,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 09:39:44,708 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-15 09:39:44,709 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 09:39:44,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179487151] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:39:44,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-15 09:39:44,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2021-12-15 09:39:44,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047899521] [2021-12-15 09:39:44,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:39:44,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 09:39:44,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:39:44,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 09:39:44,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-15 09:39:44,712 INFO L87 Difference]: Start difference. First operand 3759 states and 5511 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:39:47,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:39:47,605 INFO L93 Difference]: Finished difference Result 9769 states and 15014 transitions. [2021-12-15 09:39:47,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 09:39:47,606 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 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 161 [2021-12-15 09:39:47,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:39:47,632 INFO L225 Difference]: With dead ends: 9769 [2021-12-15 09:39:47,632 INFO L226 Difference]: Without dead ends: 6763 [2021-12-15 09:39:47,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-15 09:39:47,639 INFO L933 BasicCegarLoop]: 276 mSDtfsCounter, 700 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2454 mSolverCounterSat, 644 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 3098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 644 IncrementalHoareTripleChecker+Valid, 2454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-15 09:39:47,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [700 Valid, 283 Invalid, 3098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [644 Valid, 2454 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-15 09:39:47,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6763 states. [2021-12-15 09:39:47,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6763 to 6763. [2021-12-15 09:39:47,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6763 states, 6762 states have (on average 1.479296066252588) internal successors, (10003), 6762 states have internal predecessors, (10003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:39:47,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6763 states to 6763 states and 10003 transitions. [2021-12-15 09:39:47,763 INFO L78 Accepts]: Start accepts. Automaton has 6763 states and 10003 transitions. Word has length 161 [2021-12-15 09:39:47,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:39:47,764 INFO L470 AbstractCegarLoop]: Abstraction has 6763 states and 10003 transitions. [2021-12-15 09:39:47,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:39:47,764 INFO L276 IsEmpty]: Start isEmpty. Operand 6763 states and 10003 transitions. [2021-12-15 09:39:47,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-15 09:39:47,766 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:39:47,766 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 09:39:47,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-15 09:39:47,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 09:39:47,989 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:39:47,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:39:47,990 INFO L85 PathProgramCache]: Analyzing trace with hash -943611789, now seen corresponding path program 1 times [2021-12-15 09:39:47,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:39:47,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480052043] [2021-12-15 09:39:47,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:39:47,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:39:48,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:39:48,098 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 09:39:48,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:39:48,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480052043] [2021-12-15 09:39:48,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480052043] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:39:48,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 09:39:48,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 09:39:48,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179955686] [2021-12-15 09:39:48,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:39:48,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 09:39:48,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:39:48,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 09:39:48,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-15 09:39:48,101 INFO L87 Difference]: Start difference. First operand 6763 states and 10003 transitions. Second operand has 4 states, 4 states have (on average 42.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:39:51,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:39:51,167 INFO L93 Difference]: Finished difference Result 15063 states and 22131 transitions. [2021-12-15 09:39:51,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 09:39:51,168 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 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 168 [2021-12-15 09:39:51,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:39:51,197 INFO L225 Difference]: With dead ends: 15063 [2021-12-15 09:39:51,197 INFO L226 Difference]: Without dead ends: 9016 [2021-12-15 09:39:51,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-15 09:39:51,205 INFO L933 BasicCegarLoop]: 694 mSDtfsCounter, 690 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 3804 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 4011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 3804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-15 09:39:51,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [690 Valid, 712 Invalid, 4011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 3804 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-12-15 09:39:51,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9016 states. [2021-12-15 09:39:51,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9016 to 8265. [2021-12-15 09:39:51,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8265 states, 8264 states have (on average 1.3902468538238142) internal successors, (11489), 8264 states have internal predecessors, (11489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:39:51,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8265 states to 8265 states and 11489 transitions. [2021-12-15 09:39:51,354 INFO L78 Accepts]: Start accepts. Automaton has 8265 states and 11489 transitions. Word has length 168 [2021-12-15 09:39:51,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:39:51,355 INFO L470 AbstractCegarLoop]: Abstraction has 8265 states and 11489 transitions. [2021-12-15 09:39:51,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:39:51,355 INFO L276 IsEmpty]: Start isEmpty. Operand 8265 states and 11489 transitions. [2021-12-15 09:39:51,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-12-15 09:39:51,358 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:39:51,358 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 09:39:51,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-15 09:39:51,358 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:39:51,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:39:51,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1686150206, now seen corresponding path program 1 times [2021-12-15 09:39:51,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:39:51,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408637654] [2021-12-15 09:39:51,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:39:51,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:39:51,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:39:51,484 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 09:39:51,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:39:51,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408637654] [2021-12-15 09:39:51,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408637654] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:39:51,485 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 09:39:51,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 09:39:51,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025444719] [2021-12-15 09:39:51,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:39:51,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 09:39:51,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:39:51,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 09:39:51,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 09:39:51,487 INFO L87 Difference]: Start difference. First operand 8265 states and 11489 transitions. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:39:54,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:39:54,042 INFO L93 Difference]: Finished difference Result 15777 states and 22220 transitions. [2021-12-15 09:39:54,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 09:39:54,043 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 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 238 [2021-12-15 09:39:54,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:39:54,076 INFO L225 Difference]: With dead ends: 15777 [2021-12-15 09:39:54,077 INFO L226 Difference]: Without dead ends: 8265 [2021-12-15 09:39:54,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 09:39:54,087 INFO L933 BasicCegarLoop]: 1022 mSDtfsCounter, 691 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2470 mSolverCounterSat, 427 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 1029 SdHoareTripleChecker+Invalid, 2897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 427 IncrementalHoareTripleChecker+Valid, 2470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-15 09:39:54,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [691 Valid, 1029 Invalid, 2897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [427 Valid, 2470 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-15 09:39:54,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8265 states. [2021-12-15 09:39:54,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8265 to 8265. [2021-12-15 09:39:54,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8265 states, 8264 states have (on average 1.3309535333978704) internal successors, (10999), 8264 states have internal predecessors, (10999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:39:54,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8265 states to 8265 states and 10999 transitions. [2021-12-15 09:39:54,236 INFO L78 Accepts]: Start accepts. Automaton has 8265 states and 10999 transitions. Word has length 238 [2021-12-15 09:39:54,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:39:54,237 INFO L470 AbstractCegarLoop]: Abstraction has 8265 states and 10999 transitions. [2021-12-15 09:39:54,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:39:54,238 INFO L276 IsEmpty]: Start isEmpty. Operand 8265 states and 10999 transitions. [2021-12-15 09:39:54,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2021-12-15 09:39:54,240 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:39:54,240 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 09:39:54,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-15 09:39:54,241 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:39:54,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:39:54,242 INFO L85 PathProgramCache]: Analyzing trace with hash -653476424, now seen corresponding path program 1 times [2021-12-15 09:39:54,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:39:54,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876704939] [2021-12-15 09:39:54,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:39:54,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:39:54,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:39:54,357 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-12-15 09:39:54,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:39:54,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876704939] [2021-12-15 09:39:54,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876704939] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:39:54,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 09:39:54,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 09:39:54,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9522221] [2021-12-15 09:39:54,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:39:54,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 09:39:54,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:39:54,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 09:39:54,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 09:39:54,360 INFO L87 Difference]: Start difference. First operand 8265 states and 10999 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:39:56,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:39:56,938 INFO L93 Difference]: Finished difference Result 21787 states and 29836 transitions. [2021-12-15 09:39:56,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 09:39:56,938 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 0 states have call successors, (0), 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 242 [2021-12-15 09:39:56,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:39:56,968 INFO L225 Difference]: With dead ends: 21787 [2021-12-15 09:39:56,969 INFO L226 Difference]: Without dead ends: 14275 [2021-12-15 09:39:56,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 09:39:56,982 INFO L933 BasicCegarLoop]: 305 mSDtfsCounter, 848 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 2775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 466 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-15 09:39:56,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [848 Valid, 312 Invalid, 2775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [466 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-15 09:39:56,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14275 states. [2021-12-15 09:39:57,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14275 to 12020. [2021-12-15 09:39:57,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12020 states, 12019 states have (on average 1.3100091521757218) internal successors, (15745), 12019 states have internal predecessors, (15745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:39:57,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12020 states to 12020 states and 15745 transitions. [2021-12-15 09:39:57,180 INFO L78 Accepts]: Start accepts. Automaton has 12020 states and 15745 transitions. Word has length 242 [2021-12-15 09:39:57,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:39:57,181 INFO L470 AbstractCegarLoop]: Abstraction has 12020 states and 15745 transitions. [2021-12-15 09:39:57,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:39:57,182 INFO L276 IsEmpty]: Start isEmpty. Operand 12020 states and 15745 transitions. [2021-12-15 09:39:57,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2021-12-15 09:39:57,192 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:39:57,192 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 09:39:57,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-15 09:39:57,193 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:39:57,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:39:57,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1764769554, now seen corresponding path program 1 times [2021-12-15 09:39:57,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:39:57,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976557122] [2021-12-15 09:39:57,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:39:57,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:39:57,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:39:57,356 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-12-15 09:39:57,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:39:57,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976557122] [2021-12-15 09:39:57,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976557122] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:39:57,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 09:39:57,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 09:39:57,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370059680] [2021-12-15 09:39:57,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:39:57,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 09:39:57,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:39:57,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 09:39:57,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 09:39:57,359 INFO L87 Difference]: Start difference. First operand 12020 states and 15745 transitions. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:39:59,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:39:59,785 INFO L93 Difference]: Finished difference Result 30797 states and 40324 transitions. [2021-12-15 09:39:59,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 09:39:59,787 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 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 307 [2021-12-15 09:39:59,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:39:59,827 INFO L225 Difference]: With dead ends: 30797 [2021-12-15 09:39:59,827 INFO L226 Difference]: Without dead ends: 19530 [2021-12-15 09:39:59,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 09:39:59,842 INFO L933 BasicCegarLoop]: 421 mSDtfsCounter, 697 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1973 mSolverCounterSat, 798 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 2771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 798 IncrementalHoareTripleChecker+Valid, 1973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-15 09:39:59,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [697 Valid, 427 Invalid, 2771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [798 Valid, 1973 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-15 09:39:59,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19530 states. [2021-12-15 09:40:00,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19530 to 18028. [2021-12-15 09:40:00,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18028 states, 18027 states have (on average 1.1678038497808843) internal successors, (21052), 18027 states have internal predecessors, (21052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:40:00,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18028 states to 18028 states and 21052 transitions. [2021-12-15 09:40:00,118 INFO L78 Accepts]: Start accepts. Automaton has 18028 states and 21052 transitions. Word has length 307 [2021-12-15 09:40:00,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:40:00,119 INFO L470 AbstractCegarLoop]: Abstraction has 18028 states and 21052 transitions. [2021-12-15 09:40:00,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:40:00,119 INFO L276 IsEmpty]: Start isEmpty. Operand 18028 states and 21052 transitions. [2021-12-15 09:40:00,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2021-12-15 09:40:00,127 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:40:00,127 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 09:40:00,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-15 09:40:00,127 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:40:00,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:40:00,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1691639396, now seen corresponding path program 1 times [2021-12-15 09:40:00,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:40:00,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201910082] [2021-12-15 09:40:00,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:40:00,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:40:00,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:40:00,267 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 412 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-12-15 09:40:00,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:40:00,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201910082] [2021-12-15 09:40:00,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201910082] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:40:00,269 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 09:40:00,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 09:40:00,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176185877] [2021-12-15 09:40:00,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:40:00,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 09:40:00,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:40:00,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 09:40:00,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 09:40:00,272 INFO L87 Difference]: Start difference. First operand 18028 states and 21052 transitions. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:40:02,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:40:02,792 INFO L93 Difference]: Finished difference Result 42813 states and 50938 transitions. [2021-12-15 09:40:02,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 09:40:02,793 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 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 396 [2021-12-15 09:40:02,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:40:02,834 INFO L225 Difference]: With dead ends: 42813 [2021-12-15 09:40:02,835 INFO L226 Difference]: Without dead ends: 25538 [2021-12-15 09:40:02,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 09:40:02,856 INFO L933 BasicCegarLoop]: 1208 mSDtfsCounter, 704 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2254 mSolverCounterSat, 439 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 1216 SdHoareTripleChecker+Invalid, 2693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 439 IncrementalHoareTripleChecker+Valid, 2254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-15 09:40:02,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [704 Valid, 1216 Invalid, 2693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [439 Valid, 2254 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-15 09:40:02,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25538 states. [2021-12-15 09:40:03,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25538 to 25538. [2021-12-15 09:40:03,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25538 states, 25537 states have (on average 1.1436347260837216) internal successors, (29205), 25537 states have internal predecessors, (29205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:40:03,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25538 states to 25538 states and 29205 transitions. [2021-12-15 09:40:03,248 INFO L78 Accepts]: Start accepts. Automaton has 25538 states and 29205 transitions. Word has length 396 [2021-12-15 09:40:03,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:40:03,248 INFO L470 AbstractCegarLoop]: Abstraction has 25538 states and 29205 transitions. [2021-12-15 09:40:03,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:40:03,249 INFO L276 IsEmpty]: Start isEmpty. Operand 25538 states and 29205 transitions. [2021-12-15 09:40:03,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2021-12-15 09:40:03,254 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:40:03,255 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 09:40:03,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-15 09:40:03,256 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:40:03,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:40:03,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1249127334, now seen corresponding path program 1 times [2021-12-15 09:40:03,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:40:03,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682988456] [2021-12-15 09:40:03,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:40:03,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:40:03,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:40:03,393 INFO L134 CoverageAnalysis]: Checked inductivity of 538 backedges. 435 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-12-15 09:40:03,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:40:03,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682988456] [2021-12-15 09:40:03,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682988456] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:40:03,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 09:40:03,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 09:40:03,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826360041] [2021-12-15 09:40:03,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:40:03,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 09:40:03,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:40:03,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 09:40:03,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 09:40:03,396 INFO L87 Difference]: Start difference. First operand 25538 states and 29205 transitions. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:40:06,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:40:06,479 INFO L93 Difference]: Finished difference Result 61588 states and 71503 transitions. [2021-12-15 09:40:06,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 09:40:06,480 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 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 406 [2021-12-15 09:40:06,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:40:06,538 INFO L225 Difference]: With dead ends: 61588 [2021-12-15 09:40:06,538 INFO L226 Difference]: Without dead ends: 36803 [2021-12-15 09:40:06,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 09:40:06,565 INFO L933 BasicCegarLoop]: 570 mSDtfsCounter, 697 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2304 mSolverCounterSat, 629 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 2933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 629 IncrementalHoareTripleChecker+Valid, 2304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-15 09:40:06,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [697 Valid, 576 Invalid, 2933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [629 Valid, 2304 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-15 09:40:06,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36803 states. [2021-12-15 09:40:07,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36803 to 36803. [2021-12-15 09:40:07,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36803 states, 36802 states have (on average 1.1417857725123635) internal successors, (42020), 36802 states have internal predecessors, (42020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:40:07,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36803 states to 36803 states and 42020 transitions. [2021-12-15 09:40:07,093 INFO L78 Accepts]: Start accepts. Automaton has 36803 states and 42020 transitions. Word has length 406 [2021-12-15 09:40:07,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:40:07,094 INFO L470 AbstractCegarLoop]: Abstraction has 36803 states and 42020 transitions. [2021-12-15 09:40:07,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:40:07,095 INFO L276 IsEmpty]: Start isEmpty. Operand 36803 states and 42020 transitions. [2021-12-15 09:40:07,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2021-12-15 09:40:07,102 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:40:07,103 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 09:40:07,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-15 09:40:07,103 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:40:07,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:40:07,104 INFO L85 PathProgramCache]: Analyzing trace with hash -833439212, now seen corresponding path program 1 times [2021-12-15 09:40:07,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:40:07,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133155380] [2021-12-15 09:40:07,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:40:07,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:40:07,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:40:07,253 INFO L134 CoverageAnalysis]: Checked inductivity of 546 backedges. 293 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2021-12-15 09:40:07,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:40:07,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133155380] [2021-12-15 09:40:07,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133155380] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:40:07,254 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 09:40:07,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 09:40:07,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674694996] [2021-12-15 09:40:07,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:40:07,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 09:40:07,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:40:07,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 09:40:07,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 09:40:07,256 INFO L87 Difference]: Start difference. First operand 36803 states and 42020 transitions. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:40:10,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:40:10,092 INFO L93 Difference]: Finished difference Result 89375 states and 102665 transitions. [2021-12-15 09:40:10,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 09:40:10,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 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 428 [2021-12-15 09:40:10,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:40:10,167 INFO L225 Difference]: With dead ends: 89375 [2021-12-15 09:40:10,167 INFO L226 Difference]: Without dead ends: 53325 [2021-12-15 09:40:10,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 09:40:10,190 INFO L933 BasicCegarLoop]: 375 mSDtfsCounter, 700 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2520 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 2908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 2520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-15 09:40:10,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [700 Valid, 382 Invalid, 2908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [388 Valid, 2520 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-15 09:40:10,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53325 states. [2021-12-15 09:40:10,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53325 to 50321. [2021-12-15 09:40:10,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50321 states, 50320 states have (on average 1.1457869634340223) internal successors, (57656), 50320 states have internal predecessors, (57656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:40:10,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50321 states to 50321 states and 57656 transitions. [2021-12-15 09:40:10,727 INFO L78 Accepts]: Start accepts. Automaton has 50321 states and 57656 transitions. Word has length 428 [2021-12-15 09:40:10,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:40:10,728 INFO L470 AbstractCegarLoop]: Abstraction has 50321 states and 57656 transitions. [2021-12-15 09:40:10,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:40:10,728 INFO L276 IsEmpty]: Start isEmpty. Operand 50321 states and 57656 transitions. [2021-12-15 09:40:10,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2021-12-15 09:40:10,736 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:40:10,737 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 09:40:10,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-15 09:40:10,737 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:40:10,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:40:10,738 INFO L85 PathProgramCache]: Analyzing trace with hash 717789962, now seen corresponding path program 1 times [2021-12-15 09:40:10,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:40:10,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971564651] [2021-12-15 09:40:10,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:40:10,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:40:10,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:40:10,876 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2021-12-15 09:40:10,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:40:10,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971564651] [2021-12-15 09:40:10,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971564651] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:40:10,877 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 09:40:10,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 09:40:10,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787967841] [2021-12-15 09:40:10,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:40:10,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 09:40:10,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:40:10,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 09:40:10,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 09:40:10,879 INFO L87 Difference]: Start difference. First operand 50321 states and 57656 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:40:13,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:40:13,799 INFO L93 Difference]: Finished difference Result 119415 states and 137660 transitions. [2021-12-15 09:40:13,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 09:40:13,800 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 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 432 [2021-12-15 09:40:13,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:40:13,882 INFO L225 Difference]: With dead ends: 119415 [2021-12-15 09:40:13,882 INFO L226 Difference]: Without dead ends: 69847 [2021-12-15 09:40:13,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 09:40:13,921 INFO L933 BasicCegarLoop]: 1109 mSDtfsCounter, 854 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2198 mSolverCounterSat, 562 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 2760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 562 IncrementalHoareTripleChecker+Valid, 2198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-15 09:40:13,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [854 Valid, 1117 Invalid, 2760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [562 Valid, 2198 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-15 09:40:13,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69847 states. [2021-12-15 09:40:14,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69847 to 69847. [2021-12-15 09:40:14,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69847 states, 69846 states have (on average 1.1302293617386823) internal successors, (78942), 69846 states have internal predecessors, (78942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:40:14,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69847 states to 69847 states and 78942 transitions. [2021-12-15 09:40:14,959 INFO L78 Accepts]: Start accepts. Automaton has 69847 states and 78942 transitions. Word has length 432 [2021-12-15 09:40:14,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:40:14,967 INFO L470 AbstractCegarLoop]: Abstraction has 69847 states and 78942 transitions. [2021-12-15 09:40:14,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:40:14,968 INFO L276 IsEmpty]: Start isEmpty. Operand 69847 states and 78942 transitions. [2021-12-15 09:40:14,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 563 [2021-12-15 09:40:14,986 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:40:14,986 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 09:40:14,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-15 09:40:14,987 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:40:14,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:40:14,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1208217531, now seen corresponding path program 1 times [2021-12-15 09:40:14,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:40:14,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012799590] [2021-12-15 09:40:14,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:40:14,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:40:15,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:40:15,195 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 401 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2021-12-15 09:40:15,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:40:15,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012799590] [2021-12-15 09:40:15,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012799590] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:40:15,195 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 09:40:15,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 09:40:15,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306080905] [2021-12-15 09:40:15,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:40:15,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 09:40:15,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:40:15,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 09:40:15,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 09:40:15,412 INFO L87 Difference]: Start difference. First operand 69847 states and 78942 transitions. Second operand has 3 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:40:18,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:40:18,419 INFO L93 Difference]: Finished difference Result 189258 states and 214494 transitions. [2021-12-15 09:40:18,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 09:40:18,420 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 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 562 [2021-12-15 09:40:18,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:40:18,572 INFO L225 Difference]: With dead ends: 189258 [2021-12-15 09:40:18,572 INFO L226 Difference]: Without dead ends: 114907 [2021-12-15 09:40:18,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 09:40:18,798 INFO L933 BasicCegarLoop]: 1322 mSDtfsCounter, 576 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2245 mSolverCounterSat, 620 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 1330 SdHoareTripleChecker+Invalid, 2865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 620 IncrementalHoareTripleChecker+Valid, 2245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-15 09:40:18,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [576 Valid, 1330 Invalid, 2865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [620 Valid, 2245 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-15 09:40:18,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114907 states.