./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/locks/test_locks_11.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/locks/test_locks_11.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 dd9c6b82321d3b192dc5809ecc7ca6021855509a18ab1d23ca9eeb538976a0c0 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 08:57:22,935 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 08:57:22,937 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 08:57:22,965 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 08:57:22,966 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 08:57:22,968 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 08:57:22,971 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 08:57:22,973 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 08:57:22,974 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 08:57:22,977 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 08:57:22,977 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 08:57:22,978 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 08:57:22,979 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 08:57:22,981 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 08:57:22,982 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 08:57:22,983 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 08:57:22,986 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 08:57:22,990 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 08:57:22,991 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 08:57:22,992 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 08:57:22,993 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 08:57:22,998 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 08:57:22,998 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 08:57:22,999 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 08:57:23,000 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 08:57:23,003 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 08:57:23,004 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 08:57:23,004 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 08:57:23,005 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 08:57:23,005 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 08:57:23,005 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 08:57:23,006 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 08:57:23,007 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 08:57:23,008 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 08:57:23,009 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 08:57:23,010 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 08:57:23,010 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 08:57:23,010 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 08:57:23,011 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 08:57:23,011 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 08:57:23,012 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 08:57:23,012 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 08:57:23,026 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 08:57:23,029 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 08:57:23,030 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 08:57:23,030 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 08:57:23,032 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 08:57:23,032 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 08:57:23,032 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 08:57:23,032 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 08:57:23,032 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 08:57:23,033 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 08:57:23,033 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 08:57:23,034 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 08:57:23,034 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 08:57:23,034 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 08:57:23,034 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 08:57:23,034 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 08:57:23,034 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 08:57:23,034 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 08:57:23,035 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 08:57:23,035 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 08:57:23,035 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 08:57:23,035 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 08:57:23,035 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 08:57:23,035 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 08:57:23,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 08:57:23,036 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 08:57:23,036 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 08:57:23,036 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 08:57:23,036 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 08:57:23,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 08:57:23,036 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 08:57:23,036 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 08:57:23,037 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 08:57:23,037 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 08:57:23,037 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dd9c6b82321d3b192dc5809ecc7ca6021855509a18ab1d23ca9eeb538976a0c0 [2021-12-15 08:57:23,230 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 08:57:23,257 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 08:57:23,259 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 08:57:23,260 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 08:57:23,262 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 08:57:23,263 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_11.c [2021-12-15 08:57:23,326 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e2c4acf2/f0f4fdd0d0c546029c2f6039881894fd/FLAG2d6da2006 [2021-12-15 08:57:23,679 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 08:57:23,680 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_11.c [2021-12-15 08:57:23,700 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e2c4acf2/f0f4fdd0d0c546029c2f6039881894fd/FLAG2d6da2006 [2021-12-15 08:57:23,709 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e2c4acf2/f0f4fdd0d0c546029c2f6039881894fd [2021-12-15 08:57:23,713 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 08:57:23,716 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 08:57:23,717 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 08:57:23,717 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 08:57:23,719 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 08:57:23,720 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 08:57:23" (1/1) ... [2021-12-15 08:57:23,721 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17896f2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:57:23, skipping insertion in model container [2021-12-15 08:57:23,721 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 08:57:23" (1/1) ... [2021-12-15 08:57:23,725 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 08:57:23,747 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 08:57:23,896 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/locks/test_locks_11.c[4246,4259] [2021-12-15 08:57:23,902 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 08:57:23,910 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 08:57:23,934 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/locks/test_locks_11.c[4246,4259] [2021-12-15 08:57:23,935 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 08:57:23,945 INFO L208 MainTranslator]: Completed translation [2021-12-15 08:57:23,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:57:23 WrapperNode [2021-12-15 08:57:23,946 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 08:57:23,947 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 08:57:23,947 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 08:57:23,947 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 08:57:23,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:57:23" (1/1) ... [2021-12-15 08:57:23,956 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:57:23" (1/1) ... [2021-12-15 08:57:23,969 INFO L137 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 149 [2021-12-15 08:57:23,969 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 08:57:23,970 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 08:57:23,970 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 08:57:23,970 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 08:57:23,975 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:57:23" (1/1) ... [2021-12-15 08:57:23,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:57:23" (1/1) ... [2021-12-15 08:57:23,977 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:57:23" (1/1) ... [2021-12-15 08:57:23,977 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:57:23" (1/1) ... [2021-12-15 08:57:23,979 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:57:23" (1/1) ... [2021-12-15 08:57:23,982 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:57:23" (1/1) ... [2021-12-15 08:57:23,983 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:57:23" (1/1) ... [2021-12-15 08:57:23,984 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 08:57:23,985 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 08:57:23,985 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 08:57:23,985 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 08:57:23,986 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:57:23" (1/1) ... [2021-12-15 08:57:23,991 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 08:57:23,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 08:57:24,007 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 08:57:24,012 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 08:57:24,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 08:57:24,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 08:57:24,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 08:57:24,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 08:57:24,098 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 08:57:24,099 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 08:57:24,248 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 08:57:24,252 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 08:57:24,252 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-15 08:57:24,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 08:57:24 BoogieIcfgContainer [2021-12-15 08:57:24,254 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 08:57:24,255 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 08:57:24,255 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 08:57:24,257 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 08:57:24,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 08:57:23" (1/3) ... [2021-12-15 08:57:24,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7224fd57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 08:57:24, skipping insertion in model container [2021-12-15 08:57:24,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:57:23" (2/3) ... [2021-12-15 08:57:24,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7224fd57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 08:57:24, skipping insertion in model container [2021-12-15 08:57:24,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 08:57:24" (3/3) ... [2021-12-15 08:57:24,259 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_11.c [2021-12-15 08:57:24,262 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 08:57:24,263 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 08:57:24,290 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 08:57:24,294 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 08:57:24,294 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 08:57:24,303 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 41 states have (on average 1.9024390243902438) internal successors, (78), 42 states have internal predecessors, (78), 0 states have call successors, (0), 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 08:57:24,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-15 08:57:24,307 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:57:24,307 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:57:24,307 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:57:24,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:57:24,311 INFO L85 PathProgramCache]: Analyzing trace with hash 458919617, now seen corresponding path program 1 times [2021-12-15 08:57:24,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:57:24,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554316481] [2021-12-15 08:57:24,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:57:24,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:57:24,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:57:24,476 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 08:57:24,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:57:24,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554316481] [2021-12-15 08:57:24,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554316481] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 08:57:24,478 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 08:57:24,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 08:57:24,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124578675] [2021-12-15 08:57:24,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 08:57:24,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 08:57:24,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:57:24,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 08:57:24,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 08:57:24,503 INFO L87 Difference]: Start difference. First operand has 43 states, 41 states have (on average 1.9024390243902438) internal successors, (78), 42 states have internal predecessors, (78), 0 states have call successors, (0), 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 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 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 08:57:24,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 08:57:24,552 INFO L93 Difference]: Finished difference Result 89 states and 157 transitions. [2021-12-15 08:57:24,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 08:57:24,554 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2021-12-15 08:57:24,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 08:57:24,561 INFO L225 Difference]: With dead ends: 89 [2021-12-15 08:57:24,561 INFO L226 Difference]: Without dead ends: 75 [2021-12-15 08:57:24,563 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 08:57:24,568 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 57 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 08:57:24,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 151 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 08:57:24,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-12-15 08:57:24,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 51. [2021-12-15 08:57:24,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.88) internal successors, (94), 50 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 08:57:24,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 94 transitions. [2021-12-15 08:57:24,599 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 94 transitions. Word has length 18 [2021-12-15 08:57:24,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 08:57:24,599 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 94 transitions. [2021-12-15 08:57:24,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 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 08:57:24,600 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 94 transitions. [2021-12-15 08:57:24,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-15 08:57:24,601 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:57:24,601 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:57:24,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 08:57:24,602 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:57:24,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:57:24,605 INFO L85 PathProgramCache]: Analyzing trace with hash -552197633, now seen corresponding path program 1 times [2021-12-15 08:57:24,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:57:24,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918958867] [2021-12-15 08:57:24,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:57:24,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:57:24,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:57:24,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 08:57:24,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:57:24,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918958867] [2021-12-15 08:57:24,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918958867] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 08:57:24,682 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 08:57:24,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 08:57:24,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858019128] [2021-12-15 08:57:24,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 08:57:24,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 08:57:24,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:57:24,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 08:57:24,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 08:57:24,686 INFO L87 Difference]: Start difference. First operand 51 states and 94 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 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 08:57:24,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 08:57:24,715 INFO L93 Difference]: Finished difference Result 124 states and 229 transitions. [2021-12-15 08:57:24,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 08:57:24,716 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2021-12-15 08:57:24,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 08:57:24,717 INFO L225 Difference]: With dead ends: 124 [2021-12-15 08:57:24,718 INFO L226 Difference]: Without dead ends: 75 [2021-12-15 08:57:24,718 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 08:57:24,719 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 53 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 08:57:24,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 157 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 08:57:24,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-12-15 08:57:24,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2021-12-15 08:57:24,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.8611111111111112) internal successors, (134), 72 states have internal predecessors, (134), 0 states have call successors, (0), 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 08:57:24,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 134 transitions. [2021-12-15 08:57:24,730 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 134 transitions. Word has length 18 [2021-12-15 08:57:24,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 08:57:24,731 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 134 transitions. [2021-12-15 08:57:24,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 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 08:57:24,731 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 134 transitions. [2021-12-15 08:57:24,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-15 08:57:24,732 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:57:24,732 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:57:24,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-15 08:57:24,735 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:57:24,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:57:24,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1341819263, now seen corresponding path program 1 times [2021-12-15 08:57:24,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:57:24,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329317601] [2021-12-15 08:57:24,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:57:24,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:57:24,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:57:24,791 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 08:57:24,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:57:24,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329317601] [2021-12-15 08:57:24,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329317601] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 08:57:24,792 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 08:57:24,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 08:57:24,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180257093] [2021-12-15 08:57:24,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 08:57:24,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 08:57:24,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:57:24,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 08:57:24,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 08:57:24,795 INFO L87 Difference]: Start difference. First operand 73 states and 134 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 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 08:57:24,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 08:57:24,811 INFO L93 Difference]: Finished difference Result 114 states and 204 transitions. [2021-12-15 08:57:24,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 08:57:24,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2021-12-15 08:57:24,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 08:57:24,812 INFO L225 Difference]: With dead ends: 114 [2021-12-15 08:57:24,814 INFO L226 Difference]: Without dead ends: 78 [2021-12-15 08:57:24,815 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 08:57:24,816 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 55 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 08:57:24,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 176 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 08:57:24,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-12-15 08:57:24,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2021-12-15 08:57:24,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.8133333333333332) internal successors, (136), 75 states have internal predecessors, (136), 0 states have call successors, (0), 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 08:57:24,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 136 transitions. [2021-12-15 08:57:24,827 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 136 transitions. Word has length 19 [2021-12-15 08:57:24,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 08:57:24,828 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 136 transitions. [2021-12-15 08:57:24,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 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 08:57:24,828 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 136 transitions. [2021-12-15 08:57:24,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-15 08:57:24,829 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:57:24,829 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:57:24,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-15 08:57:24,830 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:57:24,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:57:24,830 INFO L85 PathProgramCache]: Analyzing trace with hash 61955585, now seen corresponding path program 1 times [2021-12-15 08:57:24,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:57:24,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705367035] [2021-12-15 08:57:24,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:57:24,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:57:24,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:57:24,872 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 08:57:24,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:57:24,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705367035] [2021-12-15 08:57:24,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705367035] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 08:57:24,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 08:57:24,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 08:57:24,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523291576] [2021-12-15 08:57:24,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 08:57:24,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 08:57:24,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:57:24,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 08:57:24,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 08:57:24,875 INFO L87 Difference]: Start difference. First operand 76 states and 136 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 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 08:57:24,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 08:57:24,891 INFO L93 Difference]: Finished difference Result 145 states and 261 transitions. [2021-12-15 08:57:24,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 08:57:24,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2021-12-15 08:57:24,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 08:57:24,894 INFO L225 Difference]: With dead ends: 145 [2021-12-15 08:57:24,894 INFO L226 Difference]: Without dead ends: 143 [2021-12-15 08:57:24,895 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 08:57:24,897 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 50 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 08:57:24,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 137 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 08:57:24,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-12-15 08:57:24,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 101. [2021-12-15 08:57:24,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.81) internal successors, (181), 100 states have internal predecessors, (181), 0 states have call successors, (0), 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 08:57:24,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 181 transitions. [2021-12-15 08:57:24,913 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 181 transitions. Word has length 19 [2021-12-15 08:57:24,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 08:57:24,913 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 181 transitions. [2021-12-15 08:57:24,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 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 08:57:24,913 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 181 transitions. [2021-12-15 08:57:24,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-15 08:57:24,915 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:57:24,915 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:57:24,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-15 08:57:24,915 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:57:24,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:57:24,920 INFO L85 PathProgramCache]: Analyzing trace with hash -949161665, now seen corresponding path program 1 times [2021-12-15 08:57:24,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:57:24,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947084185] [2021-12-15 08:57:24,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:57:24,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:57:24,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:57:24,961 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 08:57:24,962 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:57:24,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947084185] [2021-12-15 08:57:24,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947084185] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 08:57:24,963 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 08:57:24,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 08:57:24,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488465904] [2021-12-15 08:57:24,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 08:57:24,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 08:57:24,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:57:24,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 08:57:24,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 08:57:24,965 INFO L87 Difference]: Start difference. First operand 101 states and 181 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 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 08:57:24,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 08:57:24,977 INFO L93 Difference]: Finished difference Result 241 states and 435 transitions. [2021-12-15 08:57:24,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 08:57:24,977 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2021-12-15 08:57:24,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 08:57:24,978 INFO L225 Difference]: With dead ends: 241 [2021-12-15 08:57:24,979 INFO L226 Difference]: Without dead ends: 145 [2021-12-15 08:57:24,979 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 08:57:24,980 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 52 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 08:57:24,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 158 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 08:57:24,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-12-15 08:57:24,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 143. [2021-12-15 08:57:24,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.795774647887324) internal successors, (255), 142 states have internal predecessors, (255), 0 states have call successors, (0), 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 08:57:24,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 255 transitions. [2021-12-15 08:57:24,992 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 255 transitions. Word has length 19 [2021-12-15 08:57:24,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 08:57:24,992 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 255 transitions. [2021-12-15 08:57:24,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 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 08:57:24,992 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 255 transitions. [2021-12-15 08:57:24,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-15 08:57:24,993 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:57:24,993 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 08:57:24,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-15 08:57:24,993 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:57:24,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:57:24,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1920836500, now seen corresponding path program 1 times [2021-12-15 08:57:24,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:57:24,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370945315] [2021-12-15 08:57:24,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:57:24,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:57:25,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:57:25,016 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 08:57:25,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:57:25,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370945315] [2021-12-15 08:57:25,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370945315] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 08:57:25,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 08:57:25,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 08:57:25,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287836927] [2021-12-15 08:57:25,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 08:57:25,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 08:57:25,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:57:25,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 08:57:25,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 08:57:25,019 INFO L87 Difference]: Start difference. First operand 143 states and 255 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 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 08:57:25,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 08:57:25,027 INFO L93 Difference]: Finished difference Result 216 states and 382 transitions. [2021-12-15 08:57:25,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 08:57:25,028 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 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 08:57:25,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 08:57:25,029 INFO L225 Difference]: With dead ends: 216 [2021-12-15 08:57:25,029 INFO L226 Difference]: Without dead ends: 147 [2021-12-15 08:57:25,029 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 08:57:25,030 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 54 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 08:57:25,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 172 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 08:57:25,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-12-15 08:57:25,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 145. [2021-12-15 08:57:25,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.7708333333333333) internal successors, (255), 144 states have internal predecessors, (255), 0 states have call successors, (0), 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 08:57:25,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 255 transitions. [2021-12-15 08:57:25,036 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 255 transitions. Word has length 20 [2021-12-15 08:57:25,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 08:57:25,036 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 255 transitions. [2021-12-15 08:57:25,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 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 08:57:25,037 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 255 transitions. [2021-12-15 08:57:25,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-15 08:57:25,037 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:57:25,037 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 08:57:25,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-15 08:57:25,038 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:57:25,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:57:25,038 INFO L85 PathProgramCache]: Analyzing trace with hash 640972822, now seen corresponding path program 1 times [2021-12-15 08:57:25,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:57:25,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353989444] [2021-12-15 08:57:25,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:57:25,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:57:25,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:57:25,072 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 08:57:25,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:57:25,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353989444] [2021-12-15 08:57:25,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353989444] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 08:57:25,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 08:57:25,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 08:57:25,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118796520] [2021-12-15 08:57:25,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 08:57:25,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 08:57:25,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:57:25,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 08:57:25,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 08:57:25,074 INFO L87 Difference]: Start difference. First operand 145 states and 255 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 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 08:57:25,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 08:57:25,094 INFO L93 Difference]: Finished difference Result 417 states and 737 transitions. [2021-12-15 08:57:25,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 08:57:25,095 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 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 08:57:25,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 08:57:25,096 INFO L225 Difference]: With dead ends: 417 [2021-12-15 08:57:25,096 INFO L226 Difference]: Without dead ends: 279 [2021-12-15 08:57:25,097 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 08:57:25,097 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 52 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 08:57:25,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 139 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 08:57:25,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2021-12-15 08:57:25,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 277. [2021-12-15 08:57:25,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 276 states have (on average 1.75) internal successors, (483), 276 states have internal predecessors, (483), 0 states have call successors, (0), 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 08:57:25,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 483 transitions. [2021-12-15 08:57:25,115 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 483 transitions. Word has length 20 [2021-12-15 08:57:25,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 08:57:25,115 INFO L470 AbstractCegarLoop]: Abstraction has 277 states and 483 transitions. [2021-12-15 08:57:25,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 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 08:57:25,115 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 483 transitions. [2021-12-15 08:57:25,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-15 08:57:25,117 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:57:25,118 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 08:57:25,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-15 08:57:25,118 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:57:25,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:57:25,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1652090072, now seen corresponding path program 1 times [2021-12-15 08:57:25,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:57:25,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473986520] [2021-12-15 08:57:25,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:57:25,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:57:25,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:57:25,156 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 08:57:25,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:57:25,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473986520] [2021-12-15 08:57:25,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473986520] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 08:57:25,157 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 08:57:25,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 08:57:25,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302704579] [2021-12-15 08:57:25,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 08:57:25,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 08:57:25,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:57:25,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 08:57:25,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 08:57:25,159 INFO L87 Difference]: Start difference. First operand 277 states and 483 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 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 08:57:25,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 08:57:25,166 INFO L93 Difference]: Finished difference Result 353 states and 621 transitions. [2021-12-15 08:57:25,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 08:57:25,167 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 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 08:57:25,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 08:57:25,168 INFO L225 Difference]: With dead ends: 353 [2021-12-15 08:57:25,168 INFO L226 Difference]: Without dead ends: 351 [2021-12-15 08:57:25,169 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 08:57:25,169 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 47 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 08:57:25,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 188 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 08:57:25,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2021-12-15 08:57:25,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 277. [2021-12-15 08:57:25,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 276 states have (on average 1.7355072463768115) internal successors, (479), 276 states have internal predecessors, (479), 0 states have call successors, (0), 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 08:57:25,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 479 transitions. [2021-12-15 08:57:25,176 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 479 transitions. Word has length 20 [2021-12-15 08:57:25,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 08:57:25,176 INFO L470 AbstractCegarLoop]: Abstraction has 277 states and 479 transitions. [2021-12-15 08:57:25,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 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 08:57:25,177 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 479 transitions. [2021-12-15 08:57:25,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-15 08:57:25,177 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:57:25,178 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:57:25,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-15 08:57:25,178 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:57:25,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:57:25,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1604465292, now seen corresponding path program 1 times [2021-12-15 08:57:25,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:57:25,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707154435] [2021-12-15 08:57:25,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:57:25,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:57:25,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:57:25,195 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 08:57:25,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:57:25,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707154435] [2021-12-15 08:57:25,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707154435] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 08:57:25,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 08:57:25,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 08:57:25,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396386116] [2021-12-15 08:57:25,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 08:57:25,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 08:57:25,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:57:25,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 08:57:25,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 08:57:25,198 INFO L87 Difference]: Start difference. First operand 277 states and 479 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 08:57:25,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 08:57:25,207 INFO L93 Difference]: Finished difference Result 517 states and 905 transitions. [2021-12-15 08:57:25,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 08:57:25,207 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-12-15 08:57:25,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 08:57:25,209 INFO L225 Difference]: With dead ends: 517 [2021-12-15 08:57:25,209 INFO L226 Difference]: Without dead ends: 515 [2021-12-15 08:57:25,209 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 08:57:25,210 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 44 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 08:57:25,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 133 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 08:57:25,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2021-12-15 08:57:25,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 385. [2021-12-15 08:57:25,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 1.7057291666666667) internal successors, (655), 384 states have internal predecessors, (655), 0 states have call successors, (0), 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 08:57:25,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 655 transitions. [2021-12-15 08:57:25,217 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 655 transitions. Word has length 21 [2021-12-15 08:57:25,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 08:57:25,218 INFO L470 AbstractCegarLoop]: Abstraction has 385 states and 655 transitions. [2021-12-15 08:57:25,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 08:57:25,218 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 655 transitions. [2021-12-15 08:57:25,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-15 08:57:25,219 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:57:25,219 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:57:25,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-15 08:57:25,219 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:57:25,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:57:25,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1679384754, now seen corresponding path program 1 times [2021-12-15 08:57:25,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:57:25,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569552301] [2021-12-15 08:57:25,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:57:25,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:57:25,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:57:25,236 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 08:57:25,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:57:25,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569552301] [2021-12-15 08:57:25,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569552301] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 08:57:25,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 08:57:25,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 08:57:25,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316469218] [2021-12-15 08:57:25,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 08:57:25,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 08:57:25,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:57:25,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 08:57:25,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 08:57:25,238 INFO L87 Difference]: Start difference. First operand 385 states and 655 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 08:57:25,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 08:57:25,249 INFO L93 Difference]: Finished difference Result 917 states and 1569 transitions. [2021-12-15 08:57:25,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 08:57:25,250 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-12-15 08:57:25,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 08:57:25,251 INFO L225 Difference]: With dead ends: 917 [2021-12-15 08:57:25,251 INFO L226 Difference]: Without dead ends: 539 [2021-12-15 08:57:25,252 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 08:57:25,252 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 50 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 08:57:25,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 160 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 08:57:25,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2021-12-15 08:57:25,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 537. [2021-12-15 08:57:25,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 536 states have (on average 1.6921641791044777) internal successors, (907), 536 states have internal predecessors, (907), 0 states have call successors, (0), 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 08:57:25,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 907 transitions. [2021-12-15 08:57:25,262 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 907 transitions. Word has length 21 [2021-12-15 08:57:25,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 08:57:25,262 INFO L470 AbstractCegarLoop]: Abstraction has 537 states and 907 transitions. [2021-12-15 08:57:25,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 08:57:25,263 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 907 transitions. [2021-12-15 08:57:25,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-15 08:57:25,263 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:57:25,264 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:57:25,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-15 08:57:25,264 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:57:25,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:57:25,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1801397547, now seen corresponding path program 1 times [2021-12-15 08:57:25,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:57:25,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610642634] [2021-12-15 08:57:25,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:57:25,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:57:25,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:57:25,281 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 08:57:25,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:57:25,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610642634] [2021-12-15 08:57:25,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610642634] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 08:57:25,281 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 08:57:25,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 08:57:25,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555219268] [2021-12-15 08:57:25,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 08:57:25,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 08:57:25,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:57:25,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 08:57:25,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 08:57:25,283 INFO L87 Difference]: Start difference. First operand 537 states and 907 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 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 08:57:25,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 08:57:25,299 INFO L93 Difference]: Finished difference Result 813 states and 1369 transitions. [2021-12-15 08:57:25,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 08:57:25,300 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2021-12-15 08:57:25,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 08:57:25,301 INFO L225 Difference]: With dead ends: 813 [2021-12-15 08:57:25,301 INFO L226 Difference]: Without dead ends: 551 [2021-12-15 08:57:25,302 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 08:57:25,302 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 52 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 08:57:25,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 164 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 08:57:25,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2021-12-15 08:57:25,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 549. [2021-12-15 08:57:25,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 548 states have (on average 1.6697080291970803) internal successors, (915), 548 states have internal predecessors, (915), 0 states have call successors, (0), 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 08:57:25,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 915 transitions. [2021-12-15 08:57:25,313 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 915 transitions. Word has length 22 [2021-12-15 08:57:25,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 08:57:25,313 INFO L470 AbstractCegarLoop]: Abstraction has 549 states and 915 transitions. [2021-12-15 08:57:25,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 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 08:57:25,313 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 915 transitions. [2021-12-15 08:57:25,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-15 08:57:25,314 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:57:25,314 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:57:25,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-15 08:57:25,315 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:57:25,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:57:25,315 INFO L85 PathProgramCache]: Analyzing trace with hash 521533869, now seen corresponding path program 1 times [2021-12-15 08:57:25,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:57:25,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417789209] [2021-12-15 08:57:25,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:57:25,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:57:25,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:57:25,338 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 08:57:25,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:57:25,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417789209] [2021-12-15 08:57:25,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417789209] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 08:57:25,351 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 08:57:25,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 08:57:25,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880605194] [2021-12-15 08:57:25,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 08:57:25,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 08:57:25,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:57:25,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 08:57:25,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 08:57:25,353 INFO L87 Difference]: Start difference. First operand 549 states and 915 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 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 08:57:25,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 08:57:25,364 INFO L93 Difference]: Finished difference Result 1001 states and 1693 transitions. [2021-12-15 08:57:25,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 08:57:25,364 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2021-12-15 08:57:25,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 08:57:25,367 INFO L225 Difference]: With dead ends: 1001 [2021-12-15 08:57:25,371 INFO L226 Difference]: Without dead ends: 999 [2021-12-15 08:57:25,371 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 08:57:25,372 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 41 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 08:57:25,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 131 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 08:57:25,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2021-12-15 08:57:25,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 773. [2021-12-15 08:57:25,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 773 states, 772 states have (on average 1.6308290155440415) internal successors, (1259), 772 states have internal predecessors, (1259), 0 states have call successors, (0), 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 08:57:25,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 1259 transitions. [2021-12-15 08:57:25,397 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 1259 transitions. Word has length 22 [2021-12-15 08:57:25,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 08:57:25,398 INFO L470 AbstractCegarLoop]: Abstraction has 773 states and 1259 transitions. [2021-12-15 08:57:25,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 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 08:57:25,398 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 1259 transitions. [2021-12-15 08:57:25,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-15 08:57:25,398 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:57:25,398 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:57:25,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-15 08:57:25,399 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:57:25,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:57:25,399 INFO L85 PathProgramCache]: Analyzing trace with hash -489583381, now seen corresponding path program 1 times [2021-12-15 08:57:25,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:57:25,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906588610] [2021-12-15 08:57:25,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:57:25,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:57:25,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:57:25,413 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 08:57:25,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:57:25,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906588610] [2021-12-15 08:57:25,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906588610] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 08:57:25,414 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 08:57:25,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 08:57:25,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248213382] [2021-12-15 08:57:25,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 08:57:25,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 08:57:25,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:57:25,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 08:57:25,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 08:57:25,415 INFO L87 Difference]: Start difference. First operand 773 states and 1259 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 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 08:57:25,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 08:57:25,428 INFO L93 Difference]: Finished difference Result 1817 states and 2973 transitions. [2021-12-15 08:57:25,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 08:57:25,429 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2021-12-15 08:57:25,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 08:57:25,432 INFO L225 Difference]: With dead ends: 1817 [2021-12-15 08:57:25,432 INFO L226 Difference]: Without dead ends: 1063 [2021-12-15 08:57:25,433 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 08:57:25,433 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 49 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 08:57:25,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 161 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 08:57:25,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2021-12-15 08:57:25,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 1061. [2021-12-15 08:57:25,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1061 states, 1060 states have (on average 1.6179245283018868) internal successors, (1715), 1060 states have internal predecessors, (1715), 0 states have call successors, (0), 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 08:57:25,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1715 transitions. [2021-12-15 08:57:25,449 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1715 transitions. Word has length 22 [2021-12-15 08:57:25,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 08:57:25,449 INFO L470 AbstractCegarLoop]: Abstraction has 1061 states and 1715 transitions. [2021-12-15 08:57:25,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 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 08:57:25,450 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1715 transitions. [2021-12-15 08:57:25,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-15 08:57:25,450 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:57:25,451 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:57:25,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-15 08:57:25,451 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:57:25,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:57:25,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1012104857, now seen corresponding path program 1 times [2021-12-15 08:57:25,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:57:25,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544427176] [2021-12-15 08:57:25,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:57:25,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:57:25,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:57:25,465 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 08:57:25,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:57:25,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544427176] [2021-12-15 08:57:25,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544427176] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 08:57:25,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 08:57:25,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 08:57:25,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245670043] [2021-12-15 08:57:25,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 08:57:25,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 08:57:25,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:57:25,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 08:57:25,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 08:57:25,467 INFO L87 Difference]: Start difference. First operand 1061 states and 1715 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 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 08:57:25,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 08:57:25,483 INFO L93 Difference]: Finished difference Result 1593 states and 2565 transitions. [2021-12-15 08:57:25,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 08:57:25,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2021-12-15 08:57:25,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 08:57:25,486 INFO L225 Difference]: With dead ends: 1593 [2021-12-15 08:57:25,486 INFO L226 Difference]: Without dead ends: 1079 [2021-12-15 08:57:25,486 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 08:57:25,487 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 51 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 08:57:25,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 160 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 08:57:25,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2021-12-15 08:57:25,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 1077. [2021-12-15 08:57:25,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1077 states, 1076 states have (on average 1.5938661710037174) internal successors, (1715), 1076 states have internal predecessors, (1715), 0 states have call successors, (0), 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 08:57:25,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 1715 transitions. [2021-12-15 08:57:25,501 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 1715 transitions. Word has length 23 [2021-12-15 08:57:25,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 08:57:25,502 INFO L470 AbstractCegarLoop]: Abstraction has 1077 states and 1715 transitions. [2021-12-15 08:57:25,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 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 08:57:25,502 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 1715 transitions. [2021-12-15 08:57:25,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-15 08:57:25,503 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:57:25,503 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:57:25,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-15 08:57:25,503 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:57:25,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:57:25,504 INFO L85 PathProgramCache]: Analyzing trace with hash 2002998761, now seen corresponding path program 1 times [2021-12-15 08:57:25,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:57:25,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278066867] [2021-12-15 08:57:25,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:57:25,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:57:25,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:57:25,516 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 08:57:25,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:57:25,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278066867] [2021-12-15 08:57:25,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278066867] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 08:57:25,517 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 08:57:25,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 08:57:25,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552947897] [2021-12-15 08:57:25,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 08:57:25,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 08:57:25,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:57:25,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 08:57:25,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 08:57:25,518 INFO L87 Difference]: Start difference. First operand 1077 states and 1715 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 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 08:57:25,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 08:57:25,533 INFO L93 Difference]: Finished difference Result 1929 states and 3125 transitions. [2021-12-15 08:57:25,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 08:57:25,533 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2021-12-15 08:57:25,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 08:57:25,538 INFO L225 Difference]: With dead ends: 1929 [2021-12-15 08:57:25,538 INFO L226 Difference]: Without dead ends: 1927 [2021-12-15 08:57:25,538 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 08:57:25,539 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 38 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 08:57:25,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 129 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 08:57:25,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1927 states. [2021-12-15 08:57:25,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1927 to 1541. [2021-12-15 08:57:25,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1541 states, 1540 states have (on average 1.55) internal successors, (2387), 1540 states have internal predecessors, (2387), 0 states have call successors, (0), 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 08:57:25,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1541 states to 1541 states and 2387 transitions. [2021-12-15 08:57:25,560 INFO L78 Accepts]: Start accepts. Automaton has 1541 states and 2387 transitions. Word has length 23 [2021-12-15 08:57:25,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 08:57:25,560 INFO L470 AbstractCegarLoop]: Abstraction has 1541 states and 2387 transitions. [2021-12-15 08:57:25,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 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 08:57:25,561 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states and 2387 transitions. [2021-12-15 08:57:25,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-15 08:57:25,562 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:57:25,562 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:57:25,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-15 08:57:25,562 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:57:25,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:57:25,563 INFO L85 PathProgramCache]: Analyzing trace with hash 991881511, now seen corresponding path program 1 times [2021-12-15 08:57:25,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:57:25,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494073294] [2021-12-15 08:57:25,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:57:25,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:57:25,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:57:25,576 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 08:57:25,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:57:25,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494073294] [2021-12-15 08:57:25,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494073294] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 08:57:25,576 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 08:57:25,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 08:57:25,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915888358] [2021-12-15 08:57:25,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 08:57:25,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 08:57:25,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:57:25,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 08:57:25,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 08:57:25,578 INFO L87 Difference]: Start difference. First operand 1541 states and 2387 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 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 08:57:25,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 08:57:25,599 INFO L93 Difference]: Finished difference Result 3593 states and 5589 transitions. [2021-12-15 08:57:25,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 08:57:25,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2021-12-15 08:57:25,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 08:57:25,604 INFO L225 Difference]: With dead ends: 3593 [2021-12-15 08:57:25,605 INFO L226 Difference]: Without dead ends: 2087 [2021-12-15 08:57:25,607 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 08:57:25,608 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 48 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 08:57:25,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 162 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 08:57:25,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2087 states. [2021-12-15 08:57:25,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2087 to 2085. [2021-12-15 08:57:25,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2085 states, 2084 states have (on average 1.5369481765834934) internal successors, (3203), 2084 states have internal predecessors, (3203), 0 states have call successors, (0), 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 08:57:25,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 3203 transitions. [2021-12-15 08:57:25,651 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 3203 transitions. Word has length 23 [2021-12-15 08:57:25,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 08:57:25,651 INFO L470 AbstractCegarLoop]: Abstraction has 2085 states and 3203 transitions. [2021-12-15 08:57:25,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 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 08:57:25,651 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 3203 transitions. [2021-12-15 08:57:25,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-15 08:57:25,652 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:57:25,653 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:57:25,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-15 08:57:25,653 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:57:25,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:57:25,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1963634176, now seen corresponding path program 1 times [2021-12-15 08:57:25,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:57:25,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388503641] [2021-12-15 08:57:25,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:57:25,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:57:25,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:57:25,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 08:57:25,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:57:25,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388503641] [2021-12-15 08:57:25,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388503641] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 08:57:25,674 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 08:57:25,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 08:57:25,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939250064] [2021-12-15 08:57:25,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 08:57:25,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 08:57:25,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:57:25,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 08:57:25,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 08:57:25,676 INFO L87 Difference]: Start difference. First operand 2085 states and 3203 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 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 08:57:25,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 08:57:25,701 INFO L93 Difference]: Finished difference Result 3129 states and 4789 transitions. [2021-12-15 08:57:25,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 08:57:25,702 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2021-12-15 08:57:25,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 08:57:25,707 INFO L225 Difference]: With dead ends: 3129 [2021-12-15 08:57:25,707 INFO L226 Difference]: Without dead ends: 2119 [2021-12-15 08:57:25,710 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 08:57:25,710 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 50 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 08:57:25,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 156 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 08:57:25,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2119 states. [2021-12-15 08:57:25,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2119 to 2117. [2021-12-15 08:57:25,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2117 states, 2116 states have (on average 1.5137051039697542) internal successors, (3203), 2116 states have internal predecessors, (3203), 0 states have call successors, (0), 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 08:57:25,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2117 states to 2117 states and 3203 transitions. [2021-12-15 08:57:25,749 INFO L78 Accepts]: Start accepts. Automaton has 2117 states and 3203 transitions. Word has length 24 [2021-12-15 08:57:25,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 08:57:25,749 INFO L470 AbstractCegarLoop]: Abstraction has 2117 states and 3203 transitions. [2021-12-15 08:57:25,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 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 08:57:25,749 INFO L276 IsEmpty]: Start isEmpty. Operand 2117 states and 3203 transitions. [2021-12-15 08:57:25,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-15 08:57:25,751 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:57:25,751 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:57:25,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-15 08:57:25,751 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:57:25,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:57:25,752 INFO L85 PathProgramCache]: Analyzing trace with hash 683770498, now seen corresponding path program 1 times [2021-12-15 08:57:25,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:57:25,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113316364] [2021-12-15 08:57:25,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:57:25,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:57:25,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:57:25,772 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 08:57:25,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:57:25,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113316364] [2021-12-15 08:57:25,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113316364] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 08:57:25,773 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 08:57:25,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 08:57:25,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684906249] [2021-12-15 08:57:25,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 08:57:25,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 08:57:25,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:57:25,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 08:57:25,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 08:57:25,774 INFO L87 Difference]: Start difference. First operand 2117 states and 3203 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 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 08:57:25,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 08:57:25,804 INFO L93 Difference]: Finished difference Result 3721 states and 5733 transitions. [2021-12-15 08:57:25,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 08:57:25,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2021-12-15 08:57:25,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 08:57:25,813 INFO L225 Difference]: With dead ends: 3721 [2021-12-15 08:57:25,813 INFO L226 Difference]: Without dead ends: 3719 [2021-12-15 08:57:25,813 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 08:57:25,814 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 35 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 08:57:25,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 127 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 08:57:25,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3719 states. [2021-12-15 08:57:25,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3719 to 3077. [2021-12-15 08:57:25,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3077 states, 3076 states have (on average 1.467815344603381) internal successors, (4515), 3076 states have internal predecessors, (4515), 0 states have call successors, (0), 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 08:57:25,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3077 states to 3077 states and 4515 transitions. [2021-12-15 08:57:25,862 INFO L78 Accepts]: Start accepts. Automaton has 3077 states and 4515 transitions. Word has length 24 [2021-12-15 08:57:25,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 08:57:25,863 INFO L470 AbstractCegarLoop]: Abstraction has 3077 states and 4515 transitions. [2021-12-15 08:57:25,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 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 08:57:25,863 INFO L276 IsEmpty]: Start isEmpty. Operand 3077 states and 4515 transitions. [2021-12-15 08:57:25,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-15 08:57:25,866 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:57:25,866 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:57:25,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-15 08:57:25,866 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:57:25,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:57:25,870 INFO L85 PathProgramCache]: Analyzing trace with hash -327346752, now seen corresponding path program 1 times [2021-12-15 08:57:25,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:57:25,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976085126] [2021-12-15 08:57:25,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:57:25,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:57:25,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:57:25,895 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 08:57:25,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:57:25,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976085126] [2021-12-15 08:57:25,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976085126] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 08:57:25,896 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 08:57:25,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 08:57:25,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720056489] [2021-12-15 08:57:25,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 08:57:25,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 08:57:25,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:57:25,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 08:57:25,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 08:57:25,899 INFO L87 Difference]: Start difference. First operand 3077 states and 4515 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 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 08:57:25,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 08:57:25,963 INFO L93 Difference]: Finished difference Result 7113 states and 10469 transitions. [2021-12-15 08:57:25,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 08:57:25,964 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2021-12-15 08:57:25,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 08:57:25,974 INFO L225 Difference]: With dead ends: 7113 [2021-12-15 08:57:25,974 INFO L226 Difference]: Without dead ends: 4103 [2021-12-15 08:57:25,977 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 08:57:25,978 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 47 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 08:57:25,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 163 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 08:57:25,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4103 states. [2021-12-15 08:57:26,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4103 to 4101. [2021-12-15 08:57:26,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4101 states, 4100 states have (on average 1.4524390243902439) internal successors, (5955), 4100 states have internal predecessors, (5955), 0 states have call successors, (0), 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 08:57:26,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4101 states to 4101 states and 5955 transitions. [2021-12-15 08:57:26,048 INFO L78 Accepts]: Start accepts. Automaton has 4101 states and 5955 transitions. Word has length 24 [2021-12-15 08:57:26,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 08:57:26,048 INFO L470 AbstractCegarLoop]: Abstraction has 4101 states and 5955 transitions. [2021-12-15 08:57:26,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 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 08:57:26,048 INFO L276 IsEmpty]: Start isEmpty. Operand 4101 states and 5955 transitions. [2021-12-15 08:57:26,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-15 08:57:26,051 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:57:26,051 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:57:26,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-15 08:57:26,051 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:57:26,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:57:26,052 INFO L85 PathProgramCache]: Analyzing trace with hash -277735972, now seen corresponding path program 1 times [2021-12-15 08:57:26,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:57:26,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431789236] [2021-12-15 08:57:26,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:57:26,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:57:26,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:57:26,073 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 08:57:26,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:57:26,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431789236] [2021-12-15 08:57:26,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431789236] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 08:57:26,074 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 08:57:26,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 08:57:26,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341281602] [2021-12-15 08:57:26,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 08:57:26,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 08:57:26,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:57:26,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 08:57:26,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 08:57:26,075 INFO L87 Difference]: Start difference. First operand 4101 states and 5955 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 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 08:57:26,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 08:57:26,108 INFO L93 Difference]: Finished difference Result 6153 states and 8901 transitions. [2021-12-15 08:57:26,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 08:57:26,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2021-12-15 08:57:26,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 08:57:26,131 INFO L225 Difference]: With dead ends: 6153 [2021-12-15 08:57:26,131 INFO L226 Difference]: Without dead ends: 4167 [2021-12-15 08:57:26,134 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 08:57:26,135 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 49 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 08:57:26,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 152 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 08:57:26,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4167 states. [2021-12-15 08:57:26,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4167 to 4165. [2021-12-15 08:57:26,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4165 states, 4164 states have (on average 1.430115273775216) internal successors, (5955), 4164 states have internal predecessors, (5955), 0 states have call successors, (0), 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 08:57:26,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4165 states to 4165 states and 5955 transitions. [2021-12-15 08:57:26,220 INFO L78 Accepts]: Start accepts. Automaton has 4165 states and 5955 transitions. Word has length 25 [2021-12-15 08:57:26,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 08:57:26,220 INFO L470 AbstractCegarLoop]: Abstraction has 4165 states and 5955 transitions. [2021-12-15 08:57:26,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 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 08:57:26,221 INFO L276 IsEmpty]: Start isEmpty. Operand 4165 states and 5955 transitions. [2021-12-15 08:57:26,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-15 08:57:26,225 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:57:26,225 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:57:26,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-15 08:57:26,225 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:57:26,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:57:26,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1557599650, now seen corresponding path program 1 times [2021-12-15 08:57:26,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:57:26,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696028430] [2021-12-15 08:57:26,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:57:26,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:57:26,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:57:26,239 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 08:57:26,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:57:26,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696028430] [2021-12-15 08:57:26,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696028430] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 08:57:26,239 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 08:57:26,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 08:57:26,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439181476] [2021-12-15 08:57:26,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 08:57:26,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 08:57:26,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:57:26,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 08:57:26,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 08:57:26,241 INFO L87 Difference]: Start difference. First operand 4165 states and 5955 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 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 08:57:26,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 08:57:26,299 INFO L93 Difference]: Finished difference Result 7177 states and 10437 transitions. [2021-12-15 08:57:26,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 08:57:26,300 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2021-12-15 08:57:26,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 08:57:26,308 INFO L225 Difference]: With dead ends: 7177 [2021-12-15 08:57:26,308 INFO L226 Difference]: Without dead ends: 7175 [2021-12-15 08:57:26,309 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 08:57:26,309 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 32 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 08:57:26,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 125 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 08:57:26,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7175 states. [2021-12-15 08:57:26,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7175 to 6149. [2021-12-15 08:57:26,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6149 states, 6148 states have (on average 1.385003253090436) internal successors, (8515), 6148 states have internal predecessors, (8515), 0 states have call successors, (0), 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 08:57:26,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6149 states to 6149 states and 8515 transitions. [2021-12-15 08:57:26,401 INFO L78 Accepts]: Start accepts. Automaton has 6149 states and 8515 transitions. Word has length 25 [2021-12-15 08:57:26,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 08:57:26,401 INFO L470 AbstractCegarLoop]: Abstraction has 6149 states and 8515 transitions. [2021-12-15 08:57:26,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 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 08:57:26,402 INFO L276 IsEmpty]: Start isEmpty. Operand 6149 states and 8515 transitions. [2021-12-15 08:57:26,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-15 08:57:26,424 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:57:26,425 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:57:26,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-15 08:57:26,425 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:57:26,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:57:26,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1726250396, now seen corresponding path program 1 times [2021-12-15 08:57:26,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:57:26,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935341298] [2021-12-15 08:57:26,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:57:26,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:57:26,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:57:26,438 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 08:57:26,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:57:26,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935341298] [2021-12-15 08:57:26,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935341298] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 08:57:26,439 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 08:57:26,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 08:57:26,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916921339] [2021-12-15 08:57:26,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 08:57:26,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 08:57:26,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:57:26,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 08:57:26,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 08:57:26,440 INFO L87 Difference]: Start difference. First operand 6149 states and 8515 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 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 08:57:26,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 08:57:26,496 INFO L93 Difference]: Finished difference Result 14089 states and 19525 transitions. [2021-12-15 08:57:26,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 08:57:26,496 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2021-12-15 08:57:26,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 08:57:26,506 INFO L225 Difference]: With dead ends: 14089 [2021-12-15 08:57:26,507 INFO L226 Difference]: Without dead ends: 8071 [2021-12-15 08:57:26,513 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 08:57:26,513 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 46 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 08:57:26,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 164 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 08:57:26,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8071 states. [2021-12-15 08:57:26,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8071 to 8069. [2021-12-15 08:57:26,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8069 states, 8068 states have (on average 1.364774417451661) internal successors, (11011), 8068 states have internal predecessors, (11011), 0 states have call successors, (0), 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 08:57:26,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8069 states to 8069 states and 11011 transitions. [2021-12-15 08:57:26,712 INFO L78 Accepts]: Start accepts. Automaton has 8069 states and 11011 transitions. Word has length 25 [2021-12-15 08:57:26,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 08:57:26,712 INFO L470 AbstractCegarLoop]: Abstraction has 8069 states and 11011 transitions. [2021-12-15 08:57:26,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 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 08:57:26,713 INFO L276 IsEmpty]: Start isEmpty. Operand 8069 states and 11011 transitions. [2021-12-15 08:57:26,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-15 08:57:26,718 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:57:26,718 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:57:26,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-15 08:57:26,719 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:57:26,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:57:26,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1040733483, now seen corresponding path program 1 times [2021-12-15 08:57:26,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:57:26,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015268815] [2021-12-15 08:57:26,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:57:26,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:57:26,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:57:26,731 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 08:57:26,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:57:26,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015268815] [2021-12-15 08:57:26,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015268815] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 08:57:26,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 08:57:26,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 08:57:26,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867126630] [2021-12-15 08:57:26,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 08:57:26,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 08:57:26,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:57:26,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 08:57:26,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 08:57:26,733 INFO L87 Difference]: Start difference. First operand 8069 states and 11011 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 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 08:57:26,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 08:57:26,816 INFO L93 Difference]: Finished difference Result 12105 states and 16453 transitions. [2021-12-15 08:57:26,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 08:57:26,817 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2021-12-15 08:57:26,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 08:57:26,827 INFO L225 Difference]: With dead ends: 12105 [2021-12-15 08:57:26,827 INFO L226 Difference]: Without dead ends: 8199 [2021-12-15 08:57:26,830 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 08:57:26,830 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 48 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 08:57:26,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 148 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 08:57:26,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8199 states. [2021-12-15 08:57:26,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8199 to 8197. [2021-12-15 08:57:26,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8197 states, 8196 states have (on average 1.343460224499756) internal successors, (11011), 8196 states have internal predecessors, (11011), 0 states have call successors, (0), 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 08:57:26,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8197 states to 8197 states and 11011 transitions. [2021-12-15 08:57:26,931 INFO L78 Accepts]: Start accepts. Automaton has 8197 states and 11011 transitions. Word has length 26 [2021-12-15 08:57:26,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 08:57:26,931 INFO L470 AbstractCegarLoop]: Abstraction has 8197 states and 11011 transitions. [2021-12-15 08:57:26,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 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 08:57:26,931 INFO L276 IsEmpty]: Start isEmpty. Operand 8197 states and 11011 transitions. [2021-12-15 08:57:26,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-15 08:57:26,936 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:57:26,936 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:57:26,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-15 08:57:26,936 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:57:26,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:57:26,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1974370135, now seen corresponding path program 1 times [2021-12-15 08:57:26,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:57:26,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694280060] [2021-12-15 08:57:26,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:57:26,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:57:26,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:57:26,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 08:57:26,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:57:26,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694280060] [2021-12-15 08:57:26,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694280060] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 08:57:26,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 08:57:26,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 08:57:26,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272618672] [2021-12-15 08:57:26,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 08:57:26,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 08:57:26,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:57:26,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 08:57:26,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 08:57:26,949 INFO L87 Difference]: Start difference. First operand 8197 states and 11011 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 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 08:57:27,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 08:57:27,047 INFO L93 Difference]: Finished difference Result 13833 states and 18821 transitions. [2021-12-15 08:57:27,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 08:57:27,047 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2021-12-15 08:57:27,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 08:57:27,065 INFO L225 Difference]: With dead ends: 13833 [2021-12-15 08:57:27,065 INFO L226 Difference]: Without dead ends: 13831 [2021-12-15 08:57:27,068 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 08:57:27,068 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 29 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 08:57:27,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 123 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 08:57:27,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13831 states. [2021-12-15 08:57:27,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13831 to 12293. [2021-12-15 08:57:27,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12293 states, 12292 states have (on average 1.3019036771884152) internal successors, (16003), 12292 states have internal predecessors, (16003), 0 states have call successors, (0), 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 08:57:27,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12293 states to 12293 states and 16003 transitions. [2021-12-15 08:57:27,251 INFO L78 Accepts]: Start accepts. Automaton has 12293 states and 16003 transitions. Word has length 26 [2021-12-15 08:57:27,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 08:57:27,251 INFO L470 AbstractCegarLoop]: Abstraction has 12293 states and 16003 transitions. [2021-12-15 08:57:27,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 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 08:57:27,251 INFO L276 IsEmpty]: Start isEmpty. Operand 12293 states and 16003 transitions. [2021-12-15 08:57:27,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-15 08:57:27,261 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:57:27,261 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:57:27,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-15 08:57:27,261 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:57:27,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:57:27,261 INFO L85 PathProgramCache]: Analyzing trace with hash 963252885, now seen corresponding path program 1 times [2021-12-15 08:57:27,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:57:27,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16421071] [2021-12-15 08:57:27,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:57:27,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:57:27,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:57:27,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 08:57:27,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:57:27,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16421071] [2021-12-15 08:57:27,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16421071] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 08:57:27,273 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 08:57:27,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 08:57:27,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835462891] [2021-12-15 08:57:27,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 08:57:27,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 08:57:27,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:57:27,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 08:57:27,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 08:57:27,274 INFO L87 Difference]: Start difference. First operand 12293 states and 16003 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 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 08:57:27,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 08:57:27,445 INFO L93 Difference]: Finished difference Result 27913 states and 36229 transitions. [2021-12-15 08:57:27,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 08:57:27,446 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2021-12-15 08:57:27,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 08:57:27,464 INFO L225 Difference]: With dead ends: 27913 [2021-12-15 08:57:27,465 INFO L226 Difference]: Without dead ends: 15879 [2021-12-15 08:57:27,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 08:57:27,475 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 45 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 08:57:27,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 165 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 08:57:27,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15879 states. [2021-12-15 08:57:27,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15879 to 15877. [2021-12-15 08:57:27,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15877 states, 15876 states have (on average 1.2740614764424287) internal successors, (20227), 15876 states have internal predecessors, (20227), 0 states have call successors, (0), 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 08:57:27,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15877 states to 15877 states and 20227 transitions. [2021-12-15 08:57:27,703 INFO L78 Accepts]: Start accepts. Automaton has 15877 states and 20227 transitions. Word has length 26 [2021-12-15 08:57:27,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 08:57:27,703 INFO L470 AbstractCegarLoop]: Abstraction has 15877 states and 20227 transitions. [2021-12-15 08:57:27,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 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 08:57:27,704 INFO L276 IsEmpty]: Start isEmpty. Operand 15877 states and 20227 transitions. [2021-12-15 08:57:27,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-15 08:57:27,713 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:57:27,713 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:57:27,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-15 08:57:27,713 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:57:27,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:57:27,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1076147793, now seen corresponding path program 1 times [2021-12-15 08:57:27,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:57:27,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630862177] [2021-12-15 08:57:27,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:57:27,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:57:27,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:57:27,725 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 08:57:27,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:57:27,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630862177] [2021-12-15 08:57:27,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630862177] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 08:57:27,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 08:57:27,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 08:57:27,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607764861] [2021-12-15 08:57:27,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 08:57:27,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 08:57:27,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:57:27,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 08:57:27,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 08:57:27,727 INFO L87 Difference]: Start difference. First operand 15877 states and 20227 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 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 08:57:27,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 08:57:27,875 INFO L93 Difference]: Finished difference Result 23817 states and 30213 transitions. [2021-12-15 08:57:27,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 08:57:27,875 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2021-12-15 08:57:27,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 08:57:27,893 INFO L225 Difference]: With dead ends: 23817 [2021-12-15 08:57:27,893 INFO L226 Difference]: Without dead ends: 16135 [2021-12-15 08:57:27,899 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 08:57:27,900 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 47 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 08:57:27,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 144 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 08:57:27,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16135 states. [2021-12-15 08:57:28,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16135 to 16133. [2021-12-15 08:57:28,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16133 states, 16132 states have (on average 1.2538432928341186) internal successors, (20227), 16132 states have internal predecessors, (20227), 0 states have call successors, (0), 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 08:57:28,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16133 states to 16133 states and 20227 transitions. [2021-12-15 08:57:28,084 INFO L78 Accepts]: Start accepts. Automaton has 16133 states and 20227 transitions. Word has length 27 [2021-12-15 08:57:28,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 08:57:28,084 INFO L470 AbstractCegarLoop]: Abstraction has 16133 states and 20227 transitions. [2021-12-15 08:57:28,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 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 08:57:28,085 INFO L276 IsEmpty]: Start isEmpty. Operand 16133 states and 20227 transitions. [2021-12-15 08:57:28,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-15 08:57:28,093 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:57:28,093 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:57:28,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-15 08:57:28,093 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:57:28,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:57:28,094 INFO L85 PathProgramCache]: Analyzing trace with hash -203715885, now seen corresponding path program 1 times [2021-12-15 08:57:28,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:57:28,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331586124] [2021-12-15 08:57:28,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:57:28,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:57:28,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:57:28,104 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 08:57:28,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:57:28,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331586124] [2021-12-15 08:57:28,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331586124] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 08:57:28,105 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 08:57:28,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 08:57:28,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457420386] [2021-12-15 08:57:28,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 08:57:28,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 08:57:28,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:57:28,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 08:57:28,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 08:57:28,106 INFO L87 Difference]: Start difference. First operand 16133 states and 20227 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 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 08:57:28,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 08:57:28,269 INFO L93 Difference]: Finished difference Result 26633 states and 33541 transitions. [2021-12-15 08:57:28,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 08:57:28,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2021-12-15 08:57:28,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 08:57:28,302 INFO L225 Difference]: With dead ends: 26633 [2021-12-15 08:57:28,302 INFO L226 Difference]: Without dead ends: 26631 [2021-12-15 08:57:28,306 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 08:57:28,307 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 26 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 08:57:28,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 121 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 08:57:28,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26631 states. [2021-12-15 08:57:28,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26631 to 24581. [2021-12-15 08:57:28,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24581 states, 24580 states have (on average 1.2186737184703011) internal successors, (29955), 24580 states have internal predecessors, (29955), 0 states have call successors, (0), 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 08:57:28,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24581 states to 24581 states and 29955 transitions. [2021-12-15 08:57:28,584 INFO L78 Accepts]: Start accepts. Automaton has 24581 states and 29955 transitions. Word has length 27 [2021-12-15 08:57:28,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 08:57:28,584 INFO L470 AbstractCegarLoop]: Abstraction has 24581 states and 29955 transitions. [2021-12-15 08:57:28,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 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 08:57:28,585 INFO L276 IsEmpty]: Start isEmpty. Operand 24581 states and 29955 transitions. [2021-12-15 08:57:28,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-15 08:57:28,665 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:57:28,665 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:57:28,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-15 08:57:28,666 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:57:28,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:57:28,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1214833135, now seen corresponding path program 1 times [2021-12-15 08:57:28,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:57:28,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530080482] [2021-12-15 08:57:28,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:57:28,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:57:28,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:57:28,688 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 08:57:28,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:57:28,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530080482] [2021-12-15 08:57:28,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530080482] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 08:57:28,689 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 08:57:28,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 08:57:28,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554515773] [2021-12-15 08:57:28,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 08:57:28,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 08:57:28,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:57:28,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 08:57:28,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 08:57:28,691 INFO L87 Difference]: Start difference. First operand 24581 states and 29955 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 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 08:57:28,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 08:57:28,903 INFO L93 Difference]: Finished difference Result 55305 states and 66821 transitions. [2021-12-15 08:57:28,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 08:57:28,904 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2021-12-15 08:57:28,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 08:57:28,936 INFO L225 Difference]: With dead ends: 55305 [2021-12-15 08:57:28,936 INFO L226 Difference]: Without dead ends: 31239 [2021-12-15 08:57:28,958 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 08:57:28,958 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 44 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 08:57:28,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 166 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 08:57:28,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31239 states. [2021-12-15 08:57:29,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31239 to 31237. [2021-12-15 08:57:29,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31237 states, 31236 states have (on average 1.1802727621974645) internal successors, (36867), 31236 states have internal predecessors, (36867), 0 states have call successors, (0), 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 08:57:29,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31237 states to 31237 states and 36867 transitions. [2021-12-15 08:57:29,446 INFO L78 Accepts]: Start accepts. Automaton has 31237 states and 36867 transitions. Word has length 27 [2021-12-15 08:57:29,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 08:57:29,447 INFO L470 AbstractCegarLoop]: Abstraction has 31237 states and 36867 transitions. [2021-12-15 08:57:29,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 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 08:57:29,447 INFO L276 IsEmpty]: Start isEmpty. Operand 31237 states and 36867 transitions. [2021-12-15 08:57:29,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-15 08:57:29,460 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:57:29,461 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:57:29,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-15 08:57:29,461 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:57:29,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:57:29,462 INFO L85 PathProgramCache]: Analyzing trace with hash -2020009046, now seen corresponding path program 1 times [2021-12-15 08:57:29,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:57:29,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496341116] [2021-12-15 08:57:29,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:57:29,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:57:29,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:57:29,472 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 08:57:29,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:57:29,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496341116] [2021-12-15 08:57:29,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496341116] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 08:57:29,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 08:57:29,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 08:57:29,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547893881] [2021-12-15 08:57:29,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 08:57:29,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 08:57:29,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:57:29,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 08:57:29,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 08:57:29,475 INFO L87 Difference]: Start difference. First operand 31237 states and 36867 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 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 08:57:29,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 08:57:29,683 INFO L93 Difference]: Finished difference Result 46857 states and 55045 transitions. [2021-12-15 08:57:29,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 08:57:29,683 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2021-12-15 08:57:29,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 08:57:29,717 INFO L225 Difference]: With dead ends: 46857 [2021-12-15 08:57:29,717 INFO L226 Difference]: Without dead ends: 31751 [2021-12-15 08:57:29,734 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 08:57:29,735 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 46 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 08:57:29,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 140 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 08:57:29,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31751 states. [2021-12-15 08:57:30,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31751 to 31749. [2021-12-15 08:57:30,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31749 states, 31748 states have (on average 1.1612385032128008) internal successors, (36867), 31748 states have internal predecessors, (36867), 0 states have call successors, (0), 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 08:57:30,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31749 states to 31749 states and 36867 transitions. [2021-12-15 08:57:30,333 INFO L78 Accepts]: Start accepts. Automaton has 31749 states and 36867 transitions. Word has length 28 [2021-12-15 08:57:30,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 08:57:30,334 INFO L470 AbstractCegarLoop]: Abstraction has 31749 states and 36867 transitions. [2021-12-15 08:57:30,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 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 08:57:30,334 INFO L276 IsEmpty]: Start isEmpty. Operand 31749 states and 36867 transitions. [2021-12-15 08:57:30,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-15 08:57:30,351 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:57:30,351 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:57:30,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-15 08:57:30,351 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:57:30,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:57:30,352 INFO L85 PathProgramCache]: Analyzing trace with hash 995094572, now seen corresponding path program 1 times [2021-12-15 08:57:30,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:57:30,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731254257] [2021-12-15 08:57:30,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:57:30,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:57:30,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:57:30,366 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 08:57:30,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:57:30,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731254257] [2021-12-15 08:57:30,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731254257] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 08:57:30,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 08:57:30,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 08:57:30,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801496735] [2021-12-15 08:57:30,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 08:57:30,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 08:57:30,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:57:30,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 08:57:30,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 08:57:30,368 INFO L87 Difference]: Start difference. First operand 31749 states and 36867 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 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 08:57:30,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 08:57:30,777 INFO L93 Difference]: Finished difference Result 92167 states and 104452 transitions. [2021-12-15 08:57:30,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 08:57:30,778 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2021-12-15 08:57:30,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 08:57:30,813 INFO L225 Difference]: With dead ends: 92167 [2021-12-15 08:57:30,813 INFO L226 Difference]: Without dead ends: 31749 [2021-12-15 08:57:30,837 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 08:57:30,838 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 43 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 08:57:30,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 138 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 08:57:30,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31749 states. [2021-12-15 08:57:31,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31749 to 31749. [2021-12-15 08:57:31,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31749 states, 31748 states have (on average 1.096730502708832) internal successors, (34819), 31748 states have internal predecessors, (34819), 0 states have call successors, (0), 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 08:57:31,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31749 states to 31749 states and 34819 transitions. [2021-12-15 08:57:31,179 INFO L78 Accepts]: Start accepts. Automaton has 31749 states and 34819 transitions. Word has length 28 [2021-12-15 08:57:31,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 08:57:31,179 INFO L470 AbstractCegarLoop]: Abstraction has 31749 states and 34819 transitions. [2021-12-15 08:57:31,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 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 08:57:31,180 INFO L276 IsEmpty]: Start isEmpty. Operand 31749 states and 34819 transitions. [2021-12-15 08:57:31,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-15 08:57:31,254 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:57:31,254 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:57:31,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-15 08:57:31,254 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:57:31,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:57:31,255 INFO L85 PathProgramCache]: Analyzing trace with hash 2006211822, now seen corresponding path program 1 times [2021-12-15 08:57:31,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:57:31,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429432046] [2021-12-15 08:57:31,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:57:31,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:57:31,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:57:31,268 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 08:57:31,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:57:31,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429432046] [2021-12-15 08:57:31,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429432046] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 08:57:31,269 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 08:57:31,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 08:57:31,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610184147] [2021-12-15 08:57:31,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 08:57:31,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 08:57:31,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:57:31,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 08:57:31,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 08:57:31,271 INFO L87 Difference]: Start difference. First operand 31749 states and 34819 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 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 08:57:31,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 08:57:31,393 INFO L93 Difference]: Finished difference Result 31749 states and 34819 transitions. [2021-12-15 08:57:31,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 08:57:31,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2021-12-15 08:57:31,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 08:57:31,394 INFO L225 Difference]: With dead ends: 31749 [2021-12-15 08:57:31,394 INFO L226 Difference]: Without dead ends: 0 [2021-12-15 08:57:31,404 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 08:57:31,406 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 20 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 08:57:31,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 78 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 08:57:31,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-15 08:57:31,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-15 08:57:31,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 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 08:57:31,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-15 08:57:31,407 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2021-12-15 08:57:31,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 08:57:31,407 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-15 08:57:31,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 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 08:57:31,408 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-15 08:57:31,409 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-15 08:57:31,410 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-15 08:57:31,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-15 08:57:31,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-15 08:57:31,422 INFO L858 garLoopResultBuilder]: For program point L159-1(lines 44 174) no Hoare annotation was computed. [2021-12-15 08:57:31,422 INFO L858 garLoopResultBuilder]: For program point L93-1(lines 44 174) no Hoare annotation was computed. [2021-12-15 08:57:31,423 INFO L858 garLoopResultBuilder]: For program point L85-1(lines 44 174) no Hoare annotation was computed. [2021-12-15 08:57:31,423 INFO L858 garLoopResultBuilder]: For program point L77-1(lines 44 174) no Hoare annotation was computed. [2021-12-15 08:57:31,423 INFO L858 garLoopResultBuilder]: For program point L135(line 135) no Hoare annotation was computed. [2021-12-15 08:57:31,423 INFO L858 garLoopResultBuilder]: For program point L160(line 160) no Hoare annotation was computed. [2021-12-15 08:57:31,423 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-15 08:57:31,423 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-15 08:57:31,423 INFO L858 garLoopResultBuilder]: For program point L119-1(lines 44 174) no Hoare annotation was computed. [2021-12-15 08:57:31,423 INFO L858 garLoopResultBuilder]: For program point L144-1(lines 44 174) no Hoare annotation was computed. [2021-12-15 08:57:31,423 INFO L861 garLoopResultBuilder]: At program point L169-1(lines 44 174) the Hoare annotation is: true [2021-12-15 08:57:31,424 INFO L858 garLoopResultBuilder]: For program point L120(line 120) no Hoare annotation was computed. [2021-12-15 08:57:31,424 INFO L861 garLoopResultBuilder]: At program point L178(lines 6 179) the Hoare annotation is: true [2021-12-15 08:57:31,424 INFO L858 garLoopResultBuilder]: For program point L145(line 145) no Hoare annotation was computed. [2021-12-15 08:57:31,424 INFO L858 garLoopResultBuilder]: For program point L46(lines 46 48) no Hoare annotation was computed. [2021-12-15 08:57:31,424 INFO L858 garLoopResultBuilder]: For program point L170(line 170) no Hoare annotation was computed. [2021-12-15 08:57:31,424 INFO L854 garLoopResultBuilder]: At program point L170-1(lines 7 179) the Hoare annotation is: false [2021-12-15 08:57:31,424 INFO L858 garLoopResultBuilder]: For program point L129-1(lines 44 174) no Hoare annotation was computed. [2021-12-15 08:57:31,424 INFO L858 garLoopResultBuilder]: For program point L154-1(lines 44 174) no Hoare annotation was computed. [2021-12-15 08:57:31,424 INFO L858 garLoopResultBuilder]: For program point L113-1(lines 44 174) no Hoare annotation was computed. [2021-12-15 08:57:31,425 INFO L858 garLoopResultBuilder]: For program point L105-1(lines 44 174) no Hoare annotation was computed. [2021-12-15 08:57:31,425 INFO L858 garLoopResultBuilder]: For program point L130(line 130) no Hoare annotation was computed. [2021-12-15 08:57:31,425 INFO L858 garLoopResultBuilder]: For program point L97-1(lines 44 174) no Hoare annotation was computed. [2021-12-15 08:57:31,425 INFO L858 garLoopResultBuilder]: For program point L155(line 155) no Hoare annotation was computed. [2021-12-15 08:57:31,425 INFO L858 garLoopResultBuilder]: For program point L89-1(lines 44 174) no Hoare annotation was computed. [2021-12-15 08:57:31,425 INFO L858 garLoopResultBuilder]: For program point L81-1(lines 44 174) no Hoare annotation was computed. [2021-12-15 08:57:31,425 INFO L858 garLoopResultBuilder]: For program point L139-1(lines 44 174) no Hoare annotation was computed. [2021-12-15 08:57:31,425 INFO L858 garLoopResultBuilder]: For program point L73(lines 73 75) no Hoare annotation was computed. [2021-12-15 08:57:31,425 INFO L858 garLoopResultBuilder]: For program point L73-2(lines 44 174) no Hoare annotation was computed. [2021-12-15 08:57:31,426 INFO L858 garLoopResultBuilder]: For program point L164-1(lines 44 174) no Hoare annotation was computed. [2021-12-15 08:57:31,426 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-15 08:57:31,426 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 177) no Hoare annotation was computed. [2021-12-15 08:57:31,426 INFO L858 garLoopResultBuilder]: For program point L140(line 140) no Hoare annotation was computed. [2021-12-15 08:57:31,426 INFO L858 garLoopResultBuilder]: For program point L165(line 165) no Hoare annotation was computed. [2021-12-15 08:57:31,426 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-15 08:57:31,426 INFO L858 garLoopResultBuilder]: For program point L124-1(lines 44 174) no Hoare annotation was computed. [2021-12-15 08:57:31,427 INFO L858 garLoopResultBuilder]: For program point L149-1(lines 44 174) no Hoare annotation was computed. [2021-12-15 08:57:31,427 INFO L858 garLoopResultBuilder]: For program point L125(line 125) no Hoare annotation was computed. [2021-12-15 08:57:31,427 INFO L858 garLoopResultBuilder]: For program point L150(line 150) no Hoare annotation was computed. [2021-12-15 08:57:31,427 INFO L861 garLoopResultBuilder]: At program point L175(lines 7 179) the Hoare annotation is: true [2021-12-15 08:57:31,427 INFO L858 garLoopResultBuilder]: For program point L109-1(lines 44 174) no Hoare annotation was computed. [2021-12-15 08:57:31,428 INFO L858 garLoopResultBuilder]: For program point L134-1(lines 44 174) no Hoare annotation was computed. [2021-12-15 08:57:31,428 INFO L858 garLoopResultBuilder]: For program point L101-1(lines 44 174) no Hoare annotation was computed. [2021-12-15 08:57:31,431 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:57:31,432 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-15 08:57:31,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 08:57:31 BoogieIcfgContainer [2021-12-15 08:57:31,439 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-15 08:57:31,440 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-15 08:57:31,440 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-15 08:57:31,440 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-15 08:57:31,440 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 08:57:24" (3/4) ... [2021-12-15 08:57:31,443 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-15 08:57:31,452 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-12-15 08:57:31,452 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-12-15 08:57:31,452 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-15 08:57:31,452 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-15 08:57:31,485 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-15 08:57:31,485 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-15 08:57:31,486 INFO L158 Benchmark]: Toolchain (without parser) took 7769.53ms. Allocated memory was 96.5MB in the beginning and 1.6GB in the end (delta: 1.5GB). Free memory was 63.8MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 415.9MB. Max. memory is 16.1GB. [2021-12-15 08:57:31,486 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 79.7MB. Free memory was 52.0MB in the beginning and 51.9MB in the end (delta: 26.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 08:57:31,486 INFO L158 Benchmark]: CACSL2BoogieTranslator took 229.56ms. Allocated memory is still 96.5MB. Free memory was 63.6MB in the beginning and 73.7MB in the end (delta: -10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 08:57:31,486 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.16ms. Allocated memory is still 96.5MB. Free memory was 73.7MB in the beginning and 72.0MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 08:57:31,488 INFO L158 Benchmark]: Boogie Preprocessor took 14.49ms. Allocated memory is still 96.5MB. Free memory was 72.0MB in the beginning and 70.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 08:57:31,488 INFO L158 Benchmark]: RCFGBuilder took 268.98ms. Allocated memory is still 96.5MB. Free memory was 70.6MB in the beginning and 58.1MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-15 08:57:31,492 INFO L158 Benchmark]: TraceAbstraction took 7184.47ms. Allocated memory was 96.5MB in the beginning and 1.6GB in the end (delta: 1.5GB). Free memory was 57.7MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 408.3MB. Max. memory is 16.1GB. [2021-12-15 08:57:31,492 INFO L158 Benchmark]: Witness Printer took 45.23ms. Allocated memory is still 1.6GB. Free memory was 1.2GB in the beginning and 1.2GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-15 08:57:31,494 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 79.7MB. Free memory was 52.0MB in the beginning and 51.9MB in the end (delta: 26.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 229.56ms. Allocated memory is still 96.5MB. Free memory was 63.6MB in the beginning and 73.7MB in the end (delta: -10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.16ms. Allocated memory is still 96.5MB. Free memory was 73.7MB in the beginning and 72.0MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 14.49ms. Allocated memory is still 96.5MB. Free memory was 72.0MB in the beginning and 70.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 268.98ms. Allocated memory is still 96.5MB. Free memory was 70.6MB in the beginning and 58.1MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 7184.47ms. Allocated memory was 96.5MB in the beginning and 1.6GB in the end (delta: 1.5GB). Free memory was 57.7MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 408.3MB. Max. memory is 16.1GB. * Witness Printer took 45.23ms. Allocated memory is still 1.6GB. Free memory was 1.2GB in the beginning and 1.2GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 177]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.1s, OverallIterations: 31, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.3s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1400 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1400 mSDsluCounter, 4588 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1835 mSDsCounter, 31 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 163 IncrementalHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 31 mSolverCounterUnsat, 2753 mSDtfsCounter, 163 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31749occurred in iteration=29, InterpolantAutomatonStates: 93, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.1s AutomataMinimizationTime, 31 MinimizatonAttempts, 6176 StatesRemovedByMinimization, 29 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 2057 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 720 NumberOfCodeBlocks, 720 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 689 ConstructedInterpolants, 0 QuantifiedInterpolants, 1492 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 31 InterpolantComputations, 31 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-12-15 08:57:31,532 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE